Weatherflash – Premium Annealed Aluminium Flashing Roll
Weatherflash is a 99% pure, fully annealed aluminium flashing crafted for general-purpose waterproof protection. Its malleable, tough and lightweight nature makes it an ideal solution for internal and external flashing applications—particularly under doors, windows, along deck bearers and with roof cladding systems.
Product Range & Variations
Width | Thickness | Length | Purpose |
150 mm | 0.30 mm | 10 m, 20 m | Undersills, deck bearers, abutments |
230 mm | 0.30 mm | 10 m, 20 m | Wider flashings, drip edges, step flashings |
Custom measures up to 10 m | 0.30 mm | On request | Custom projects & precision work |
Sources confirm compatibility across Colorbond®, Zincalume® and other common roofing substratesÂ
Key Material Benefits
- Lightweight and flexible – Easily shaped to conform to profiles and mitred corners with basic hand tools
- Durable under weather extremes – Impervious to moisture; resists cracking and corrosion in harsh conditions
- Precision finishing – Clean edges allow neat installation beneath cladding and around timber elements
Common Applications
- Flashing for timber deck bearers exposed to weather
- Under-door or window frames to prevent moisture ingress
- Drip edges on barge, fascia, verandahs
- Step flashing between wall cladding and roof lines
- Ant capping behind masonry parapets
Compliance & Compatibility
- Meets Australian Standard AS 2904 for flashings and waterproofing membranes
- Compatible with metal roofing systems like Colorbond® and Zincalume®
- Annealed aluminium resists corrosion, ensuring long-term service life
Practical Installation Tips
- Cut the 0.30 mm sheet with tin snips; fold to create tight corners or step flashings
- Overlap adjoining pieces by 50 mm for continuous weather protection
- Use corrosion-resistant screws or rivets, sealing penetrations with neutral-cure silicone
- For wide flashings, centre fix and allow small movement to accommodate thermal expansion
Weatherflash offers a reliable and versatile aluminium flashing solution for roofing and building detailing needs. Available in standard 150 mm and 230 mm widths (both 10 m and 20 m rolls), with custom lengths on request, it provides an ideal blend of flexibility, weather resistance, and ease of installation. Whether you’re flashing windows, decking, barge edges, or constructing step flashings, this product delivers a waterproof, durable finish—fully compliant with standards and compatible with common roofing materials.