Wood impregnated with flame-retardant chemicals, like this Exterior Fire-X lumber from Hoover, is an economical choice for a fire-resistant deck. Hoover's treated southern yellow pine scores a 15 in flame-spread testing (25 or below gets a Class A rating).
Building a deck in rural Australia is somewhat different from building an inner city patio deck. Although factors such as durability, longevity and resistance to termites are important considerations for both city and country timbers decks, country dwellers should also focus on timber that is fire-resistant.
The only wood that really can handle fire to any significant degree is Ipe. If you are not already familar with this material, it is an exotic hardwood from South America and it is one of the hardest, toughest most insect and rot resistant wood on earth.
The IWUIC and NFPA 1144 specify the use of decking materials that are “noncombustible,” such as steel framing and aluminum decking, or “ignition-resistant,” such as pressure-treated exterior-rated fire-retardant-treated lumber.
Fire Resistant Decking and Framing This Old House. Most wood species are rated Class C for fire resistance, but you can build safer with a Class A rated composite decking resists rot and insects and can be cut and stained just like regular wood decking. $1.50 per lineal foot.
Products Case. Fire-Resistant Decking and Framing - This Old House. Fire-Resistant Decking and Framing Keep fire from gaining a foothold on your deck or inside your home's walls with these flame-resistant framing materials.
Bushfire Flame Zone Resistant Sheet Metal Roofs 34 Appendix A. NSW Variations to Building Variations 39 Appendix B. South Australian Variations to Building Variations 43 #04: Building with Timber in Bushfire-prone Areas Page 4 ... for decking and window frames In the lower BALs the Standard provides
Flame Stop? II protects exterior and interior woods such as porous woods, cedar shake shingles, decking, and structural lumber. It's a water-based, post-treatment, interior/exterior fire retardant and wood preservative that penetrates the material and bonds with the cellular structure.
Flame Seal Wood Seal-A Fire Retardant is an application ready, water-based, Class A fire retardant designed for treatment of raw wood. Flame Seal Wood Seal-A is a mix of proprietary ingredients , which forms a slight swelling foam layer and carbon char when the treated wood is exposed to fire .
Utilise fire retardant decking materials. Seal the timber with a non-combustible seal. Avoid using flammable shrubs or wood chips for landscaping along the deck’s edge.