Category Archives: Roofing

Custom Metal Flashings, Cappings and Gutters

Custom Metal Flashings and Cappings

Life in the construction industry would be so easy if everything was a standard profile and size, wouldn’t it?

No1. Roofing and Building Supplies has always been able to meet all your custom shaped metal requirements hassle-free including:

  • Flashings and apron flashings
  • Box gutters
  • Valleys
  • Barge and parapet capping’s

But when you’re dealing with roof flashings and capping features it’s never that simple.

There are old buildings with non-standard features and new constructions with unique architectural designs, as well as specific requirements for one-off jobs.

For these you need someone with the capability to produce custom flashing's and capping’s in a vast range of materials easily, accurately, and without the fuss.

We now have the solution – ‘Your imagination is your only limitation!’


See video demonstration of how the Variobend works!

No1. Roofing and Building Supplies are proud to announce the arrival of the latest high-tech metal bending and shaping equipment from Germany.

The Variobend Double Apron Bender from ASCO GmbH combines the latest high-tech software with German precision engineering.

What Can The Variobend Do?

The Variobend is able to create almost any profile metal flashing you require with extraordinary precision and a speed that is unequalled on the market today.

Sample Custom Flashing 2
Sample Custom Flashing
Sample Custom Flashing 1

Thanks to the innovative Variobend technology we can now bend metal sheets up to 8.64 metres in length and up to 2mm material thickness.

A bending arm working range of up to 270° means that custom shaped flashings of almost any design up to 8.64 metres in length are a breeze.

Pair this with a wide range of materials and your imagination is your only limitation.

Extremely complex angle variations and configurations are no problem for the Variobend.

Custom Flashing programmed into folding machine computerised system

The Variobend Touch Control programme gives you enormous control and monitoring over the entire process including:

  • A vast range of standard profiles stored in the library
  • The ability to create, store, and export custom profiles
  • The entire folding process can be previewed and checked for problems in the simulation mode
  • User-friendly touchpad design capability

The accuracy of custom shaping and profiling is further enhanced with the innovative clamping bar system that prevents sheet movement during clamping operations.

The clever automated flipping arm speeds up production by removing the time consuming and heavy work of manually rotating sheets.

What Materials Can Be Custom Shaped?

In simple terms: we can quickly and easily produce any profile or custom shaped metal flashing you require.

We can work with:

  • Zinc
  • Colorbond / Zincalume
  • Copper
  • Aluminium
  • Stainless steel
  • Galvanised steel

Example Non-Standard Roof Flashing, Capping and Gutters?

See below for some example non-standard flashings, cappings and gutters. Please consult with your local No1 Roofing and Building Supplies store for more details.

Non Standard Flashing Profile Types

Preliminary check should include:

  • Available girth range
  • Available colours
  • Profiles not shown
  • Maximum lengths
  • Lead times
  • How to handle tapered flashing

Ordering requirements check should include:

  • Profile type
  • Colour
  • Side on which colour is to be used
  • Dimensions
  • Angles on all bends that are not 90 degrees
  • Quantity and lengths

Architectural Panel Supplies


The material published on this blog is general in nature. It is made available on the understanding that the Author is not thereby engaged in rendering professional advice. Read more

BlueScope Warranty Colorbond – What Warranties Are Available

Bluescope Warranty Colorbond

So What's Protecting Your New Steel Colorbond Roof?

The time has come to replace your roof and you now know that it’s going to be a valuable investment.

But you also want to know that your new roof is going to last the distance and is backed up by a cast-iron guarantee.   

BlueScope Warranty - Protecting Your Investment

A great warranty is always a sign of a company’s faith in the superior performance of its products.

The warranty that protects your new Colorbond or Zincalume roof is one of those special warranties that are the hallmark of an outstanding product.

For 95 years Bluescope Steel has been proudly making the steel used in a range of roofing products including Colorbond and Zincalume.

Like most warranties the Colorbond or Bluescope Steel warranties require the product to be the right one for the job.

This guide tells you how to get the best out of the very helpful and comprehensive Bluescope Steel warranties page so that you can make sure your roofing investment is protected.

Start here:, and then choose the home/ building owner button.

BlueScope Warranties Registration Website

From here you will see this list of options and generally it makes sense to simply follow each step in order.

- What a BlueScope Warranty means for you
- What warranties are available
- Before you begin your application
- Caring for your investment
- Claiming against your warranty
- Sample Warranties
- Apply for a warranty
- Activate your pre-approved warranty

BlueScope Warranties Corrosive Influence and Zoning

What Warranties Are Available?

This page helps you select the appropriate product and its associated warranty for your needs - we've also put together a quick video guide

Start at the right hand side by choosing your product from the drop-down box. 

The slider below indicates the distance from corrosive influence of coastal zones.

Choose the zone that best describes your location. 

The question button gives a clear definition of each zone.

And then move the slider to indicate how far away your house is from your closest marine environment.

Pop-up boxes on the house image indicate the length of warranty for your chosen product.

For example...

... if you choose Zincalume steel for your roof and you live 500 metres from a surf beach your roof will be covered for up to 20 years whereas Colorbond Ultra steel would be covered for 25 years in the same situation.

BlueScope Sample Warranty for Exposed Conditions

This is a critical step and you should not underestimate how far inland your house will remain affected by salt-bearing sea breezes.

Neither is it a good idea to do your roof on the cheap and choose an inappropriate product.

Doing so may void your warranty or at the least you may be disappointed by the product’s performance.

Before Your Begin Your Application

This section provides comprehensive checklists to ensure your warranty application is approved and documented as quickly as possible.

BlueScope Sample Roofing Checklist for Warranty

The checklist of required items is particularly helpful at the design and planning stage of your roofing project, as it highlights a number of important aspects that you need to get right including the little details such as the use of the correct fasteners.

The checklist also points out design features that may impact the available warranty cover.

For example...

... the roof pitch is important because moisture sits for longer on flatter roofs increasing the corrosion rates while using the wrong type of fastener can damage the surface and speed up the corrosion process.

You also need to tick all the boxes when you come to register your warranty.

List of Sample Warranties

As the title suggests, on this page you can download sample warranties for a range of Colorbond/ Bluescope Steel products.

BlueScope Sample Roofing and Walling Warranties

The precise extent of warranty cover is dependent on certain conditions.

This is why choosing the right product is critical and, if you’re at the design stage, you might want to revisit the What warranties are available? and Before you begin your application pages again.

Caring For Your Colorbond Investment

This section is all about getting the most out of your new roof.

BlueScope Caring For Your Investments & Warranties

The old adage, ‘prevention is better than cure’ is entirely true with your new roof as well.

A range of downloadable brochures outline some easy to implement maintenance and cleaning programmes for Colorbond/Bluescope Steel products.

Regular removal of leaves and organic matter from the roof and guttering is one of the most important after-care tasks for your roof.

That pile of leaves and muck is not only trapping moisture and prolonging your roof’s exposure to higher corrosion rates but the fungi and other microbial organisms in the organic matter can make themselves quite at home on your roof and cause long-term deterioration of the paint.

Claiming Against Your Warranty

Sometimes, things go wrong but Bluescope Steel stands behind their products.

Some companies go out of their way to avoid responsibility for their products but the Bluescope Steel customer service team really is there to help.

Bluescope Steel makes it easy for you to reach out and get the help you need in a really timely way and on this page you can find a number of contact options.

When you have been through the steps above, applying for and activating your pre-approved warranty will be a straightforward process.

The Bluescope Steel warranty is all about keeping a roof over your heads, protecting your investment, and providing real peace of mind.

Video Guide - How To Use the Warranty Estimator

Here's a simple step by step video guide on how to use the BlueScope Colorbond Warranty Estimator.

It's a quick 2 minute video that won't take long to watch but should help you work your way through the online Warranty Estimator

Architectural Panel Supplies

See also:

BlueScope Warranty for Colorbond

Source attribution for images and information link:


The material published on this blog is general in nature. It is made available on the understanding that the Author is not thereby engaged in rendering professional advice. Read more

How Do I Choose A Colorbond Colour For My Roof?

How Do I Choose A Colorbond Colour For My Roof?

Choose a Colorbond colour

Congratulations, you’ve decided to go with Colorbond steel for your roof - it’s a great decision. Now comes the fun part; choosing the right colour.

Colorbond comes in an amazing array of colour choices but sometimes having so many choices can actually make the final decision that much harder.

The difficulties of choosing the right colours are increased even further because:

  • Colour choices are highly subjective, ‘one person’s meat is another person’s poison’, as they say
  • Colour samples are notoriously either inaccurate or too small to get an accurate concept of how the final result will look
  • Our feelings about our colour choices can change with time and in different lights

Fortunately, there are some aspects of good design and some great online tools that can help you clarify your thoughts, narrow down the choices, and pinpoint the exact colour you need for a really great-looking roof.

No.1 Roofing and Building Supplies is one of the largest suppliers of Colorbond roofing materials and accessories in the Sydney area.

This ultimate guide to choosing your Colorbond colours is just an extension of our outstanding expert advice and consultation service.

There are so many Colorbond colours - where do I start?

With more than 20 colours available it can be hard to know where to start but it helps to break your decision-making process down into some key aspects:

  • Style and shape of roof
  • House style
  • Surrounding environment
  • Council requirements
  • Exterior and interior wall colours

What style of home do you have?

Is the house modern or heritage?

Is it really a beach style or more traditional or perhaps more a typical farm house?

Colorbond very helpfully divide their colour range into clear categories: contemporary or classic.

So, colours such as ‘cottage green’ or ‘classic cream’ will be perfect for your traditional older style home whereas colours such as ‘Surfmist’, ‘Windspray’ or ‘Shale Grey’ will bring out the coastal connection in a beach home.

It’s really important to find a colour that connects your roof to the rest of the house.

This isn’t going to be such a problem if you are painting the entire house as well but if your house has a brick exterior or you are not planning to paint the house your roof colour choice can be critical to the success of the overall effect.

Rob Schneider suggests that identifying hints of tone colours in the bricks can then be matched to roof colours to create a strong link.

Janne Petrie from The Colour Designers takes this idea even further with the suggestion that you repeat the roof colour in as many as three other areas of the property such as a fence or shed.

Matching the roof colour with other parts of the property in this way creates a truly unified look that is easy on the eye.

How does the style of roof affect my Colorbond colour choice?

It’s also important to consider the style, size and prominence of your roof. Obviously, a steep gabled roof will feature more prominently than a modernist monopitch or a skillion roof.

As Janne Petrie explains, “In situations where the roof is a dominant feature of the home, it is important to ensure that the colour does not over shadow the entire aesthetic of the building so it’s best to opt for a mid tone colour.” 

And of course the reverse is true that darker colours can help reduce the apparent roof size where you want your roof to blend in more.

Tips for Selecting Colorbond -

I want a Colorbond roof that blends in with the environment

Colorbond colour range enables you to blend your roof in with your environment whether you’re living in the bush or at the beach. sums it up nicely:

If you live near the coastline, you can choose colours like teal, azure, white, turquoise and sandy colours that reflect the colour of the ocean and the sand.

If you live in a city, you might want to consider muted colours like black, silver and white. You can use these colours as a backdrop and use other colours to accent.

If you live in the country where the prevalent colours are green, blue and yellow, choose a colour that belongs to these palettes.

Some housing developments especially near sensitive ecological areas may have strict colour scheme requirements to ensure that your home blends in and if you don’t want your neighbours and the authorities to see red you need to stick with those.

Does Council have a say in my Colorbond colour choice?

Well yes, they may do.

Councils are tending to relax the rules a little more than formerly but if you live in a heritage house it would pay to check before you do your own thing.

Excerpt from the North Sydney Council for Heritage Properties

Examples that require written permission from Council include:

  • External painting of Heritage items or premises in a Conservation Area
  • Replacement of roofing, external windows
  • Airconditioning – if the airconditioner will be visible externally

Even if you're not living in a heritage house it's a good idea to check with the local councils.

Houzz has some great colour ideas for Federation houses and other older style homes.

Paint Colour Tips for Colorbond Roofs - Houzz

Do I need to match the roof with the exterior and interior colours?

In most cases you will want to create a relaxing sense of flow throughout the house and the roof is a good place to start as that frequently is the first impression people have of your home.

Of course, contrast can be great and you will want to express your personality but taking too many uncalculated risks with colour can leave your house sticking out like a sore thumb.

Wattyl have some great inspirational ideas and tools for matching your roof and exterior colour schemes.

Colour Selector for Colorbond - Wattyl

Interior colours feel more intense because of the presence of four coloured walls so bear that in mind as you plan your transition from outside to inside.

This blog will provide some inspiration for thinking about flow and how it will affect your roof colour choice, whereas this metal roofing article on choosing Colorbond Colours will provide some very practical tips on the physical and practical aspect of how to balance the colours.

What other things that might affect my roof colour choice?

Colours can make a big difference to thermal performance of your roof. A U.S. study suggests that you can save as much as 23% of your summer cooling costs with a lighter coloured roof.

This American website has some great information about how you can choose your roof colour for optimal thermal efficiency.

Guttering, fascia boards, and eaves can also help you narrow down your colour choices. Schneider suggests that matching non-structural elements of the house such as guttering to your roof colour will help make them less obtrusive.

However, you might want to pick a contrasting colour for your eaves.

Ask yourself: is this a roof I’m going to be happy to live with for twenty years? Or perhaps you intend to sell the house after the roof has been finished; in this case you are probably better to go with more neutral colours to appeal to more buyers.

Useful tools

Sometimes you really just need to see what your colour scheme will look like. Fortunately, there are some great online tools that allow you to visualize your chose scheme and spend time with it.

You can see the entire Colorbond range of colours at the Colorbond website along with the inspiration behind the colours. Colorbond also has a great online visualiser for desktop here.

You can modify the colours according to your style of house and environment and see how the roof will look along with your chosen guttering, walls and trim colours.

There is a good slideshow here that graphically demonstrates some of the ideas covered in this blog.

Here's a walk through video on using the Colorbond Online Visualiser.

Once you’ve made your selection using the Online Visualiser you can save, print and email the finished images. Here’s an example of the Colour Print out from the Colourbond Visualiser, you can print from your PC or email to a friend.

Can I repaint a Colorbond roof?

Yes, you can. Wattyl and Resene  have some good solid information about repainting Colorbond steel.

So, now you can go to town and splash out on the colour scheme that really tickles you pink and don’t forget; No.1 Roofing and Building Supplies –we’re here to help.

Roofing Shoes for Metal Roofs


Created by roofers for roofers

Magnetic Roofing Shoes

After five years of design, development and testing, the specialised Magnetic Roofer® is vastly superior to any roofing footwear you have worn in the past.

These roofing shoes come with a patented magnetic sole that's designed to offer extra grip, better traction keeping you safe when you need it most.

Created by roofers for roofers

This shoe is safer, provides much better traction and has a 100% rubber sole with a comfortable and durable, industrial grade micro fibre upper.

These Roofing Shoes are magnetic

The magnetic sole of the shoe keeps you safe on the roof with minimal lateral sliding whilst the upper contours the foot assuring a comfortable fit.

Magnetic Roofing Shoe features:

  • Upper made from industrial grade Micro Fibre
  • 100% flexible rubber sole maximising grip and comfort
  • Industrial grade stitching
  • Low cut design for comfort
  • Upper made with breathable mesh panels to help with airflow
  • Available in sizes from Size 8 - Size 13 
  • There will be 1 magnetic cleaning tool supplied with every pair of new shoes.

Roofing Shoes

Non magnetic roofing shoe

A non-magnetised alternative, the Roofer® is a flexible design with excellent grip and comfort.

With a 100% rubber sole and an industrial grade upper that is built to last, this shoe gives you good traction.

It allows you to contour your foot to the roof profile and maintain firm contact with the surface.

Roofing Shoe features:

  • Upper made from industrial grade Micro Fibre
  • 100% flexible rubber sole maximising grip and comfort
  • Industrial grade stitching
  • Low cut design for comfort
  • Upper made with breathable mesh panels to help with airflow 
  • Available in sizes from Size 8 - Size 13 


So How Does The Magnetic Sole Work?

With the soles of the shoes being magnetic they offer you extra grip on flat metal surfaces.

The strong magnets in the sole magnetizes your foot to metal surfaces assisting in sliding on steep metal gradients but will allow you to freely lift your foot to walk.

A concept a bit like a fridge magnetic, you cannot slide the magnet down your fringe but you can easily pull the magnet off the metal surface.

So How Long Do The Magnetic Soles Work?

There will be no loss in magnetized force from within the sole of the shoe however the soles of the shoes will wear out with use affecting the use of the shoes.

Once the wear reaches a certain point the shoe will need replacement.

So What's The Difference Between the Magnetic & Non-Magnetic Shoes?

The roofing shoes are NOT magnetic, they are a standard type of roofing shoe.

The roofing shoes have been designed with 100% rubber soles maximizing flexibility and comfort on your working profile.

Breathable and soft they will warm as you work assisting in grip to help with stability.

Architectural Panel Supplies

Replace Tile Roof With Colorbond, Which Is Better?

 Replacing your concrete tiled roof with a Colorbond Metal Roof

Looking To Replace Your Tile Roof With Colorbond, Which Is Better?

Roofing is a very important part of your home and represents a substantial financial investment so when it comes to replacing your old tile roof you need to get some solid advice.

Concrete tiles have been used on Australian homes for some 70 years but Colorbond metal roofing has also built a solid reputation for durability and dependability.

There is one question you need to ask yourself...

... is it better to replace your old tile roof with tiles or covert your tile roof to Colorbond steel?

Whether you are replacing your tile roof or putting a roof on a new build getting the right information about the following aspects will help you answer that important question: 

  • Benefits or pros and cons of tile versus Colorbond
  • Costs - price difference between Colorbond and tile roof?
  • Risks - do tile roofs require more or less maintenance than Colorbond?
  • Installation difficulties - which is easier to install?
  • Resale / property value - will a new Colorbond roof increase the value of my property more than a tile roof?
  • Choosing the right type of Colorbond product - what else do I need to know about Colorbond versus tile roofing?
  • Getting qualified / experienced trades people - who can I trust to install my Colorbond roof correctly?

No.1 Roofing and Building Supplies is one of the largest suppliers of Colorbond roofing materials and accessories in the Sydney area and our outstanding expert advice and access to premimum installers is second to none.

What are the benefits of colorbond vs tile?

What Are The Benefits of Colorbond vs Tile Roofing?

Both Colorbond and tile roofs have their advantages and sometimes the design of your roof will actually dictate one or the other.

Concrete or terracotta tiles have been used for roofing in Australia for more than 70 years and offer a very traditional look.

The first Colorbond products were developed some 50 years ago and the hi-tech manufacturing processes and considerable product development since then have resulted in an outstanding product.

Plus, Colorbond is backed up by a solid warranty.

  1. Weight - Colorbond is much lighter than tile roofing, as much as 90% lighter. Not only does this mean that handling and installation is easier and faster but the roofing subframe is not subject to heavy loading and you can even use lighter battens and space rafters further apart for another cost saving.
  2. Lifespan - Colorbond roofs can have a life expectancy of up to 70 years whereas tile roofs are easily damaged and prone to cracking under typical Australian weather extremes. Problem leaks also frequently occur round the ridge capping areas on tile roofs. Colorbond ridge flashings are much simpler to install and more reliable.
  3. Water collection - older tile roofs absorb a certain amount of water, which not only adds to the weight of the roof but reduces the amount of water you can collect. This may prove critical in times of severe drought. Tiles tend to crack and the resulting dirt build-up encourages the growth of moss and mould that can contaminate your drinking water. With a Colorbond roof all the rain is collected as clean water fit for household use.
  4. Maintenance - Colorbond roofs offer a low maintenance roofing solution with a stable surface. Even when maintenance work is needed such as cleaning or repainting there is little chance of damage to the metal roofing panels. On the other hand, tile roofs frequently crack exposing the sub roofing to water damage and allowing a build up of dirt. Simply walking on a tile roof may be enough to dislodge or crack tiles. Heavy tile roofs may even require periodic strengthening or replacement of roofing support structures.
  5. Insulation - as a minimum Colorbond Roofs should be installed with a 55 mm thick foil adhered insulation blankets under them. This blanket provides thermal, acoustic and condensation protection. This isn’t the case with tile roofs which are commonly installed with just plain foil or sometimes without even that under them.
  6. Design flexibility - Colorbond roofing is much more flexible for designers than tile roofing. That’s why we’ve seen a swing of architecturally designed buildings being specified in metal roofing rather then tiles in recent years. With many colour choices and design options Colorbond roofing is a creative designers dream product.

One of the other big advantages of Colorbond steel roofing over tile roofing is that you can install Colorbond on very low pitch or even flat roofs.

Tile roofs require an adequately pitched roof angle to avoid leaks.

This can be a major consideration when you have height restrictions to work to but need to maximise your building space.

What Does it cost, concrete tile vs Colorbond

What Does It Cost To Replace A Tile Roof With Colorbond?

There are many variables when it comes to costing any roof. The only way to be sure is to seek firm quotes from qualified installers.

On average standard Colorbond corrugated roofs will be roughly the same price as standard concrete tiles roofs.

The big savings come in over time.

Lower maintenance, better insulation, better storm damage resistance and even the potential for lower premiums on your home insurance are what makes Colorbond Roofing the big winner when you put it head to head with tiles.

Is Colorbond Roofing More Difficult To Install Than Tiles?

Colorbond steel is a breeze to install for experienced trades people.

As with any roofing material it’s critical to install the roof in accordance with the building code and manufacturer’s instructions but metal roofs are remarkably resistant to damage from trades people walking on the panels or other damage.

The lightweight and cut to length properties of Colorbond Roofing mean that large areas can be rapidly installed by fewer people so you minimise the exposure of your property to multiple people – which in turn reduces the risk of damage.

Tiles are heavy and this can create real problems and extra costs in transportation and installation. Due to the labour intensive nature of installing tiles

– tile roofing teams tend to be larger then metal roofing teams – which increase the risk of damage to your property during installation.

Tile roofs can be more fragile and can be easily damaged by trades people walking on the roof

– which means that they can be easily damaged by follow on trades like antenna installers.

Tile pointing and roof capping can also be challenging areas when installing tile roofs and require very careful attention.

Does metal roofing help to increase my property value?

Will Colorbond Roofing Increase My Property Value More Than Tiles?

Colorbond is arguably the most popular and brand aware roofing material in Australia today...

... and Colorbond roofs are seen as increasingly desirable by potential property buyers.

Personal preference will always play a part in determining property values and terracotta tiles can look really smart on particular styles of houses but Colorbond roofing is becoming the roof of the future.

So, in short, replacing tired old roofing tiles with Colorbond is going to add a real boost to your property’s value.

How Do I Choose The Right Colorbond Product?

Colorbond steel has been tested and designed for Australian conditions and it’s made right here in Australia.

A variety of Colorbond steel roofing products are available to suit a range of conditions including:

  • Coastal and other high corrosion environments—choose the Colorbond Ultra steel or Colorbond stainless steel range 
  • Normal Australian condition and locations—choose from the standard Colorbond steel range

Once you’ve decided on the appropriate Colorbond steel for your location your toughest decision will be to choose from the amazing Colorbond colour range.

Who Can I Trust To Install My New Roof?

No.1 Roofing and Building Supplies is renowned throughout the NSW region for their:

  • Wide range of building and roofing materials and accessories
  • Competitive pricing
  • Access to a network of qualified roofing contractors
  • Outstanding customer service and expert advice

If you are wondering, “tile roof versus Colorbond, what’s better?”, you need to talk to us.

If you are ready to install a Colorbond roof or replace your tile roof with a Colorbond one – contact us and we will assist you find the right roofing contractor for your project.

Architectural Panel Supplies

Helpful Links and Information

Colorbond Information and Guides:


The material published on this blog is general in nature. It is made available on the understanding that the Author is not thereby engaged in rendering professional advice. Read more

BAL FZ – What Is It & What You Need To Do About It?

BAL FZ - What It Is & What You Need To Do About It?

BAL Flame Zone & Building Code Requirements

Bush fire—two simple words that are guaranteed to raise your stress levels and your insurance premiums.

Although Australians have never taken bushfires lightly the forecast is that bushfire intensity and frequency are only going to get worse.

The Australian Building Code has always acknowledged the serious financial and social cost of extreme bushfire events and it attempts to reduce their impact through legislation governing building design and materials.

The new BAL FZ (Bushfire Attack Level Flame Zone) is the most extreme rating that can be applied to building design and construction.

BAL FZ is now applicable to wide swathes of NSW including a large number of North Shore and Northern Beaches suburbs.


Why Is BAL FZ Needed?

The devastating 2009 bushfires in Victoria led to a complete re-think of the old bushfire standards.

The new BAL FZ is the most extreme level in the revised bushfire attack standards and represents how successfully particular building materials will withstand bushfires in regards to ember attack, radiant heat, and direct flame ignition resistance.

The sad reality is bushfire incidents are increasing in intensity and the social and financial costs are spiralling out of control.

A 2016 Climate Council report stated that bushfires currently cost the NSW region around $100 million dollars each year and this is forecast to rise to $800 million by 2050.

The social cost comes through loss of life and injuries, and the upheaval and dislocation that are a natural result of severe bushfire events.

For most homeowners the increased building and insurance costs associated with meeting code compliant new builds and DIY projects or renovations means that you need to do your homework before you start any building project.

Bush Fire Danger Ratings

What Does BAL FZ Mean For Me?

If you are building in a bushfire zone that requires BAL FZ compliance you need to use BAL FZ compliant materials.

This requirement also has implications for your insurance cover, as insurance companies will take a dim view of claims for fire damaged new builds that do not comply.

Although the updated requirements are more stringent the code does provide for choice. The BAL FZ essentials for windows and external doors including sliding, French and bi-fold doors are either:

1. All open able portions need to be internally or externally screened with metal (steel or bronze) screens with a maximum aperture of 2mm


2. The window or door system must comply with AS1520.8.2 when tested from the outside and have an FRL of at least -/30/-. FRL (Fire Resistance Level) -/30/- indicates that the integrity of the window will remain intact for 30 minutes of exposure to fire.

BAL FZ requirements for more substantial parts of a building including walls, decking, roofing, and exposed floors mean that combustible materials are not permitted in these areas.

This does mean that your building costs may be significantly higher but you don’t have to build an ugly Fort Knox to comply with the code.

Many traditional non-combustible building materials such as stone, brick and mud brick still comply with the BAL FZ code. Essentially, if you can’t burn it it’s probably going to be alright.

COLORBOND® steel clad roofing system construction

COLORBOND® Steel Clad Roofing System

Roofing for BAL FZ - What Are Some Good BAL FZ Rated Roofing Materials?

Roofs and roof insulation need to meet or exceed an FRL of 30/30/30 for BAL FZ compliance.

Colorbond or Zincalume steel roofing panels remain an excellent choice for your BAL FZ compliant roof. Bradford’s Anticon is a high-performance foil-faced insulation blanket that will reduce heat transfer significantly and is rated as compliant with BAL FZ requirements.

The eaves are a potential danger zone especially where fire has taken hold of vegetation close to the house.

For this reason a fireproof insulation material such as Anticon 80 compressed to 40mm should be used in the eaves. The underside of the eaves should be further protected by a fireproof material such as HardieFlex.

Bradford Fireseal FZ is a rock wool fire resistant roof insulation that will help prevent embers or flames taking hold in the roof space and these are appropriate for metal or tile roofs in BAL FZ zones.

For tile roofs you will need Bradford’s Thermoseal Roof Tile sarking, Flexitel blanket, and Fireseal FZ tile roof batts.

And you cannot install roof-mounted evaporator cooling units in BAL FZ zone unless they have been tested and meet the requirements of AS1530.8.1.

Non-compliant units must be fitted with an approved ember protection screen or in the case of a flammable cooler unit, completely covered with a non-combustible cover.

Firecrunch XClad

Firecrunch XClad for BAL FZ

Cladding for BAL FZ - What Are Some Good BAL FZ Rated Cladding Materials?

James Hardie offers a number of cladding options that will satisfy the BAL FZ requirements and provide an attractive appearance including: 

  • HardiePlank and Primeline for a traditional weather board look 
  • Scyon range of advanced fibre cement composite cladding panels 
  • Panel Clad pre-textured sheets for a Mediterranean stucco finish or a rough hewn timber look 
  • HardieTex—the original fibre cement cladding for a smart modern look 
  • HardieFlex—perfect for lining the eaves

HardieFire mineral wool insulation is a great choice for insulating walls but as with any product it must be installed to correctly to meet the code’s requirements.

HardieFire insulation must be cut to at least 5mm wider and longer than the space between each frame cavity. This ensures there are no spaces where oxygen can feed any potential fire.

FireCrunch fireproof board is a highly cost-effective exterior wall cladding with FRL levels of 90/90/90 on a steel frame and 60/60/60 on timber; these ratings greatly exceed the minimum BAL FZ requirements.

It is ten times stronger than ordinary plasterboard and won’t degrade in water. FireCrunch is also termite proof and it can be painted, rendered or tiled.

FireCrunch is made from magnesium oxide recycled from the steel industry so it’s good for the environment too.

Decking & Flooring for BAL FZ - What Do I Need?

To meet the BAL FZ requirements decking must be made of non-combustible material and have no gaps. This also means that the decking/flooring supports must either be non-combustible (steel or concrete) having an FRL of at least 30/30/30 or be fully enclosed.

Many of the fibre cement type panels are ideal for decking and floors too.

FireCrunch doesn’t just look great on your walls but with 16mm and 21 mm thicknesses it’s also perfect for flooring and decking in BAL FZ zones.

It can also serve as a substrate for other decking treatments such as tiles. Plus, you know these products are a tick for good environmental practices.

The Hardie fibre cement range such as the Scyon Secura exterior panels offer great options for any deck.

Not only are they inflammable but they have remarkable weight bearing strength characteristics as well. Scyon Secura functions as a great substrate for tiles or other flooring finishes.

Can I Still Use Timber Products?

Yes, in accordance with BAL FZ requirements you can still use timber products but only specific types of timber and only in particular situations.

External window framing is considered inconsequential and timber may be used where the timber density is higher than 650 kg/m and with a moisture content of less than 12%.

This includes but is not limited to hardwood species such as: 

  • White Cyprus
  • Ash (Alpine, Mountain, Silvertop)
  • Beech Myrtle
  • Gum (Southern Blue, Mountain, Sugar)
  • Jarrah
  • Ironbark (grey, red)
  • Mahogany
  • Celery top pine

Wood may be used in other features of your house such as fascia boards.

Don’t forget, you do need to have ember proof metal shutters that completely cover all externally opening non-compliant wooden windows or doors.

Are Sealants Covered By The BAL FZ Code?

Yes, because many sealants and adhesives contain potentially flammable compounds.

Compliance also requires the use of fire rated sealants because embers and super heated air can bypass fire rated barriers through poorly designed or constructed wall penetrations and trigger fires inside roof or wall cavities.

We stock a wide range of fire rated sealants and adhesives including: 

  • Bostik Fireban One sealant 
  • Selleys Fireblock 
  • Sika Fire rate PU—an external, fire-rated sealant that retains its flexibility and watertightness in all weathers

The products mentioned in this guide are just some examples to get your creative juices flowing. We can supply an enormous range of products appropriate for your needs so come and talk to the friendly experts at No1. Roofing and Building Supplies and let us help you realise your vision.

Please be aware that this is a guide only and you need to seek professional advice and check your intended design complies with Council and code requirements before you go ahead with any building project.

What Do The BAL Zones Mean?



BAL – Low

There is not sufficient risk to warrant exposure

BAL – 12.5

Ember attack

BAL – 19

Increasing levels of ember attack and burning debris ignited by wind borne embers togetherwith increasing heat flux between 12.5 and 19kW/m2

BAL – 29

Increasing levels of ember attack and burning debris ignited by wind borne embers togetherwith increasing heat flux between 19 and 29kW/m2

BAL – 40

Increasing levels of ember attack and burning debris ignited by wind borne embers togetherwith increasing heat flux with the increased likelihood of exposure to flames


Direct exposure to flames from fire front in addition to heat flux and ember attack

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Helpful BAL FZ Links and Information


Housing Industry Australia article on building in bushfire prone areas.

Rural Fire Services

This fact sheet clarifies the requirements of the NSW Rural Fire Service (NSW RFS) for combustible construction in Bush Fire Attack Level 40 and Flame Zone (BAL-40 and BAL-FZ) areas.

Bluescope Steel

Bluescope Steel article on Bushfire Design Factsheet for Bushfire standard compliant steel roofing system

Helpful BAL FZ Downloads

Bluescope Steel fact sheet with details for bushfire-prone AS3959-2009 BAL-FZ sites

Bushfire Fact Sheet - Bluescope Steel


Rapid Ridge – An Australian First for Roofing

Rapid Ridge - An Australian First for Roofing

Rapid Ridge - How it Works

Rapid Ridge heralds a new dawn in roofing in Australia, a Ventilated Dry Ridge System.

The Rapid Ridge system facilitates an open ridge that allows the roof to breathe with the use of an advanced double labyrinth ventilated fleece.

This fleece has been tested to provide both ventilation and protection from driving rain.

This allows a mechanically fixed fully passive and ventilated dry ridge that will be effective on any home – tile or metal.

This solves a number of problems but in particular in Australian warmer climates where radiating heat and trapped heat means higher air conditioning bills to dissipate this heat and achieve suitable comfort level.

Whirly birds and other such methods will ventilate a small part of the roof, require maintenance, they look unpleasant on the roof and in reality are very ineffective.

Rapid Ridge - How it Looks On Your Roof

Passive Ventilation - No Moving Parts

Rapid Ridge allows the whole roof to be ventilated passively with no moving parts.

Significantly less heat gets into the attic space and tests have shown that home owners can save up to 43% on cooling energy costs by installing this system.

For the roofer or builder the appeal comes in the installation as it can be done in less than half the time to the traditional method.

Advantages are lightweight materials, unlike buckets of mortar being carried up ladders to bed the ridge and time saving in not having to call back on the 2nd day to finish off the pointing and hoping that it does not rain!

The Rapid ridge can be installed in one visit by using the unique components together to build a compliant and healthier house in less than half the time.

Rapid Ridge Ventilated Dry Ridge System

Why Make the Switch?

The Home Owner benefits with a cooler & healthier home. 

  • Achieve all the benefits of roof ventilation with a no maintenance complete passive system
  • Save up to 43% on cooling energy costs during the year
  • Incorporate world best roof building practice into your home for long lasting roof functionality

The Builder/Roofer benefits with lower cost to install. 

  • Install a dry ridge system in less than half the time compared to mortar and pointing
  • Use a tried and tested complete system that is in use throughout Europe
  • Use one product that is dry and clean for universal application on ridge and hip (in most weather conditions)

The Architect benefits with a better looking and functioning roof. 

  • Promote best practice that is better for the environment and better for the home owner into your designs
  • Be first to market and educate your clients on an Australian first that is widely used in Europe
  • Achieve improved aesthetics on the roof with better ventilation (i.e. no whirly birds!)

Rapid Ridge - How it Installs

It's Been Tested by the CSIRO

Rapid Ridge is a mechanically fixed, dry ridge maintenance free fully passive and ventilated system.

Tested by CSIRO for weather proofing and ready for installation on new homes that incorporates best roof building practice into the modern home.

Evo Building Products

EVO Building Products

Evo Build are national distributors of smart building solutions, established over 15 years ago. For more product information you can give the team at No. 1 Roofing a call, you can visit the Rapid Ridge website or you can download the product brochure:

Architectural Panel Supplies

Roof Ridge Capping – A Critical Aspect of Any Well-Sealed Roof

Ridge Capping, Colorbond, Zincalume, Galvanised and Polycarbonate

Ridge capping is a critical aspect of any well-sealed roof.

It’s usually the last feature to be added to your roof but it is vitally important that it’s done correctly, as ridge capping prevents water and wind from getting underneath your roofing tiles or sheets through the highly exposed and vulnerable ridge seam.

Ridge capping also adds an attractive finish to the roof line.

Ridge capping comes in many different types and materials and No1 Roofing supplies a wide range of capping products and accessories to cater for all roof types including polycarbonate translucent plastic panels.

How Does Ridge Capping Work?

Ridge capping both looks and functions like a kind of V-shaped or rounded flashing. Roof ridge caps are fixed to the ridge lines with sufficient overlap across the sheets underneath and also feature a downwards folding lip to prevent wind or capillary action driving moisture into the roof cavity.

Ridge caps are an essential part of your roof’s drainage system. As with any roofing product it is critical that you choose the appropriate product for your requirements.

Things to consider include: 

  • Using appropriate roof materials for your area— corrosion zones, council requirements etc.
  • Checking that roofing materials are compatible with each other
  • The angle of your ridge capping will be affected by your roof pitch
  • Matching roof aesthetics

Correct installation and the use of appropriate fasteners is also pivotal to the long-term life and function of your new roof. Doing it on the cheap never pays so talk to the helpful No1 Roofing experts and avoid those costly mistakes.

Popular Ridge Capping Products

Image of Lysaght Ridge Capping


This well-known Australian manufacturer produces some of our most popular products. Lysaght manufacture ridge cappings and flashings to match all their products including Roll Top Ridge Capping, Barge Capping and Barge Roll.

They can also manufacture a range of custom shapes and profiles.

No1. Roofing can supply roof flashings for all the Lysaght range including:

  • Custom Orb range
  • Trimdek
  • Spandek
  • Klip-lok
  • Longline
  • Flatdek​

A wide range of 23 different colours means that Lysaght have the roof capping to top off your roof perfectly. And Lysaght uses 100% Australian made Colorbond or unpainted Zincalume steel.

Stratco Colorbond Ridge Capping Products


Stramit is another major Australian producer of high quality roofing materials. Stramit is part of the Fletcher Building company and have been around a long time with a reputation for excellence.

We supply Stramit products including:

  • Corrugated
  • Longspan
  • Speed deck Ultra
  • Monoclad​

Stramit uses superior Colorbond steel with the huge range of baked-on Colorbond colours for the look that’s so popular throughout Australia.

Stratco Colorbond Ridge Capping


Fielders has been looking after the needs of the Australian construction industry for 115 years. They have built their business around providing high quality products based on rigorous testing and superior engineering expertise.

Fielders supply ridge capping for their wide range of roofing profiles including:

  • Zinacalume
  • Colorbond Steel, Ultra Steel and Stainless Steel
  • Galvanised


Polycarbonate translucent plastic panels have become enormously popular especially for patios and outdoor areas.

We stock a range of ridge flashings to suit polycarbonate roofs from all the main manufacturers including:

  • Ampelite
  • Laserlite
  • Carbolite
  • Alsynite
  • Solasafe

No1 Roofing believes in providing a range of products so that our customers can find roofing solutions that match their creative vision. That’s why we also supply ridge cappings to match:

  • Corten Steel—for that iconic rusted look 
  • Aluminium—for a stunning appearance and superior corrosion resistance

If we don’t have what you want in stock we can generally get it for you at the low low prices we’re famous for.

Lysaght Ridge CappingPhoto of Lysaght Ridge Capping

Installing Ridge Capping

Installation is critical to the long term health and function of ridge capping. You need to think carefully about:

  • Material compatibility—this includes the type of timber sub-frame and the fasteners used as well as other roofing materials that may impact on the ridge capping. Be mindful also of water runoff from other roofing materials that might be incompatible 
  • Recommended fastener spacing 
  • Correct tightening of fasteners—too tight and washers may be damaged or the sheets deformed leading to moisture entry around the screw head 
  • Checking if you need a particular scribing break to fit your roof profile 
  • Using the correct scribing or notching tools for fitting the ridge cap lip snugly around the ridges on ribbed or corrugated profile sheets

Choose an appropriate silicone sealant to seal overlapping joins.

No. 1 Roofing: we know roofing and it’s our mission to give you the best roof for your needs and budget but the friendly, expert advice is always free.

Architectural Panel Supplies

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