Lead roof flashing has been the trade standard for a long time. But times change. Roofers, plumbers, and builders across Australia now want something safer, faster, and easier to install. That’s where Pro Flash® by Aztec Australasia comes in.
Pro Flash is a lead-free flashing alternative built for modern roofs. It’s light. It’s quick to fit. And it meets strict safety standards. In this guide, we’ll break down why so many trade professionals are switching from lead to Pro Flash and why it might be the right move for your next job too.
The Problem With Traditional Lead Roof Flashing
Lead flashing has worked for decades. But it comes with real problems.
Health risks top the list. Lead is toxic. Workers who cut, shape, or handle it face exposure risks over time. Safe Work Australia has tightened rules around lead handling on job sites, and many builders now want to avoid it altogether.
Heavy lifting is another issue. Lead is dense and hard to move. It slows down installation and raises the risk of strain injuries for tradies working on roofs all day.
Theft is a hidden cost too. Lead has high scrap value. Many roofs have had flashing stolen right off the job, leading to repairs, delays, and lost money.
Corrosion can also be a problem. Acid rain and cement runoff can wear down lead flashing faster than expected, shortening its working life.
These issues add up. That’s why more trade professionals across Australia are looking for a smarter, lead-free option and why Pro Flash has become a go-to choice.
What Is Pro Flash? Introducing Aztec’s Lead-Free Flashing System
Pro Flash is part of Aztec Australasia’s Pro Range of roofing sub-brands. It’s built as a direct, lead-free alternative to traditional flashing.
The range includes two core products:
- Pro Flash Flexi Roll a flexible, self-adhesive flashing tape
- Pro Flash Roof Collars pre-shaped seals for pipe penetrations
Both products use an isobutylene EPDM polymer, backed with an aluminium mesh layer. This gives Pro Flash strength, flexibility, and long-term weather resistance without any lead.
The self-adhesive backing means installers can shape and fit Pro Flash by hand or with a soft hammer. No soldering. No heavy tools. Just a clean, quick install.
Why Pro Flash Is a Smarter Alternative to Lead
Let’s look at the key reasons trade professionals are making the switch.
1. Health & Safety Benefits
Pro Flash contains no lead. That means no toxic exposure risk for installers. It’s also compliant with AS/NZS 4020, the Australian standard for products in contact with drinking water. This makes it a safe choice for both installers and end users, including projects near rainwater collection systems.
2. Easier, Faster Installation
Pro Flash comes with full adhesive backing. Installers can shape it by hand or with a soft hammer tool. It cuts easily with standard scissors or a knife. There’s no need for specialist lead-working skills or heavy equipment. This cuts labour time and gets roofs finished faster.
3. Weather & Temperature Resistance
Pro Flash performs in extreme conditions. It’s rated from -40°C to +100°C, making it suitable for Australia’s wide range of climates from tropical humidity to alpine cold. The EPDM polymer and aluminium mesh combination also stands up well to UV exposure, so it won’t break down in the sun over time.
4. Material Versatility Across Roof Types
Lead flashing isn’t always a great match for every roof surface. Pro Flash is different. It works across:
- Metal roofing (including Colorbond)
- Tile roofing
- Fibreglass roofing
- Polycarbonate sheeting
This makes it a flexible, go-to product for roofing professionals working across different project types.
5. Environmental Compliance & Sustainability
Pro Flash is non-toxic and compliant with AS/NZS 4020. That means it’s a safer choice for the environment, as well as for the people installing and living under it. For builders working on eco-conscious projects, this compliance matters.
Pro Flash Product Range Breakdown
Here’s a quick look at what’s available in the Pro Flash range.
Pro Flash Flexi Roll
| Product Code | Description | Colour Options |
| AZTPM140 | 140mm width x 0.50m | Black & Lead Grey |
| AZTPR280 | 280mm width x 5m | Black, Dark Grey, Lead Grey & Terracotta |
| AZTPR370 | 370mm width x 5m | Black, Dark Grey, Lead Grey & Terracotta |
| AZTPR560 | 560mm width x 5m | Black, Dark Grey, Lead Grey & Terracotta |
Pro Flash Roof Collars
| Product Code | Description | Base Size | Boot Size |
| AZTPF1B | Roof Collar 0–50mm Black | 280 x 450mm | 0–50mm |
| AZTPF2B | Roof Collar 50–70mm Black | 350 x 550mm | 50–70mm |
| AZTPF3B | Roof Collar 12–125mm Black | 350 x 550mm | 12–125mm |
| AZTPF4B | Roof Collar 50–170mm Black | 380 x 550mm | 50–170mm |
| AZTPF5B | Roof Collar 170–330mm Black | 600 x 850mm | 170–330mm |
These sizing options cover most standard roofing and plumbing penetration jobs, making Pro Flash a practical stock item for wholesale plumbing supplies businesses across Australia.
Lead Flashing vs. Pro Flash: Side-by-Side Comparison
| Feature | Traditional Lead Flashing | Pro Flash by Aztec |
| Safety | Toxic exposure risk | Lead-free, non-toxic |
| Installation | Slow, needs skill | Fast, self-adhesive |
| Weather resistance | Good, but can corrode | -40°C to +100°C rated |
| Compliance | No drinking water rating | AS/NZS 4020 compliant |
| Theft risk | High (scrap value) | Low |
| Application range | Limited | Metal, tile, fibreglass, polycarbonate |
This comparison shows why more roofing professionals are choosing Pro Flash over lead for new builds and repairs alike.
Who Should Switch to Pro Flash?
Pro Flash suits a wide range of trade professionals, including:
- Roofing contractors looking for a faster, safer install process
- Plumbing wholesalers wanting a modern, in-demand product to stock
- Builders working on residential and commercial roofing projects
- Renovators replacing old, worn lead flashing with a safer option
If you fall into any of these groups, Pro Flash is worth adding to your toolkit or product range.
How to Source Pro Flash Through Aztec Australasia
Aztec Australasia supplies the full Pro Flash range to trade professionals and wholesale plumbing supplies businesses across Australia. Whether you need Flexi Roll for flashing work or Roof Collars for pipe penetrations, Aztec makes it easy to order in bulk for trade use.
Download the Pro Flash brochure for full specs, or get in touch with the Aztec Australasia team to set up a trade account and start stocking a smarter, lead-free flashing solution.
Frequently Asked Questions
Is Pro Flash as durable as lead flashing?
Yes. Pro Flash is built with isobutylene EPDM polymer and an aluminium mesh backing. It performs in temperatures from -40°C to +100°C and resists UV and weather damage over the long term.
Is Pro Flash safe for drinking water systems?
Yes. Pro Flash is compliant with AS/NZS 4020, the Australian standard for products used near or in contact with drinking water systems.
What roof types can Pro Flash be used on? Pro Flash works on metal, tile, fibreglass, and polycarbonate roofing. This makes it a flexible choice for most residential and commercial roofing jobs.
How long does Pro Flash last?
Pro Flash is designed for long-term performance. Its weather-resistant materials and UV protection help it hold up over years of outdoor exposure.
Is Pro Flash more expensive than lead?
Pro Flash often saves money over time. It installs faster, cuts labour costs, and avoids the theft risk that comes with lead’s scrap value.
Conclusion: The Future of Flashing Is Lead-Free
Lead flashing has served the roofing trade for years. But it comes with safety risks, installation challenges, and rising compliance concerns. Pro Flash by Aztec Australasia offers a smarter path forward lead-free, fast to install, and built to handle Australia’s toughest weather.
Whether you’re a roofing contractor, a builder, or a wholesale plumbing supplies business, Pro Flash is a practical, compliant, and future-ready choice.
Ready to make the switch?
Download the Pro Flash brochure or contact Aztec Australasia today to explore trade pricing and stock options.
