Is decking flammable?
Elijah King
Updated on April 07, 2026
Is decking flammable?
Additionally, composite decking products are no longer feasible under the new regulations since they do not fall under the Euroclass system categories A2-s1,d0 rated or class A1. Composite decking is combustible. Most materials used in high-rise buildings are Grade A, which is non-combustible.
Is wooden decking a fire risk?
When combustible materials are used within the balcony construction, fires can spread rapidly. Previously, balcony decking was constructed using timber or other combustible composite materials. During fire breakouts, these materials could quickly catch fire and spread rapidly.
Do decks need to be fire rated?
Even though noncombustible decking products are available (e.g., metal decking and lightweight concrete), many decking products are combustible. In California, deck boards on new homes now must meet a minimum performance requirement (based on energy release when burning) to be used in wildfire-prone areas.
How do you fire proof a deck?
To make an existing deck more fireproof, use a flame retardant spray. You might also add metal sheathing around the base timbers to create more fire-resistant decks. Ask your local home improvement professional for the best recommendation.
Is plastic decking fireproof?
Composite materials are generally high in plastic which possess a high heat release rate, meaning the intensity of the heat it gives off is increased and more likely to ignite. In order to reduce this, composite decking manufacturers add fire retardants to the inner decking materials.
Is Trex decking fireproof?
Top. Nothing is more important than your safety outdoors. At Trex, we do everything we can to ensure it. Our Transcend and Select decking lines retain a Class B fire rating, while our Enhance decking lines retain a Class C fire rating; however, they are not fireproof.
Are balconies a fire risk?
Summary. 1.1. Balconies made with combustible materials are a potential source of rapid fire spread on the external wall of residential buildings. These should be considered as part of any fire risk assessment.
Are wooden balconies allowed?
The new regulations ban the use of combustible materials in external wall systems and balconies. A number of materials with elements of wood, including composite decking products, were previously compliant but are no longer permissible as they are not A2-s1, d0 rated or class A1 under the Euroclass system.
What decking is fire resistant?
PURADECK FIRE RATED is a long lasting, low maintenance alternative to timber for exterior residential and commercial projects. This makes it ideal for new build apartment units and garden rooms. PURADECK FR cladding is manufactured using certified wood fibres & recycled high density polyethylene plastic.
What is the most fire resistant decking material?
Autoclaved Aerated Concrete (AAC) They currently hold the industry title for one of the highest fire rating of any decking material. A regular 6-inch AAC block can withstand fire for almost 4 hours. A thinner 2-inch block can withstand fire for around 2 hours. It’s also possible to use AAC for both walls and floors.
Is composite decking fire proof?
What should you do when your deck is on fire?
However, the deck can be designed to minimize exposure to embers. During fire season an important job will be to keep your deck free of easily ignited materials such as leaves and needles that have accumulated in the gaps between deck boards and at the interface between the deck and the siding of the house.
What makes a deck vulnerable to a wildfire?
The vulnerability of decks to wildfire will depend on the decking board material, any combustible materials stored under the deck or kept on the deck, and the topography and amount and condition of vegetation leading to the deck.
What happens if you put a fire pit on a wood deck?
Challenges related to using a fire pit on a wood deck range from full-on fire damage and the destruction or weakening of the decking and the supporting structure, to cosmetic damage from scorching due to metal on wood contact or from hot fire pit contents spilling onto the deck for one reason or another.
Is it possible to fireproof a wooden deck?
Fireproofing an Existing Wooden Deck. Fireproofing a wooden deck is a great idea and it really will offer protection and peace of mind. However, if you already have an existing deck in place, this may be impossible to do. Move all fire sources off and away from the deck if possible.
What happens if a deck catches on fire?
If the siding is combustible, it could also ignite. Depending on how far off the ground the deck is, a surface fire burning up the deck could result in a flame impingement exposure to the structural framing members, and the sheathing. This is an example of a solid surface deck that is enclosed horizontally on the underside.
Fireproofing an Existing Wooden Deck. Fireproofing a wooden deck is a great idea and it really will offer protection and peace of mind. However, if you already have an existing deck in place, this may be impossible to do. Move all fire sources off and away from the deck if possible.
Is it safe to use a fire pit on a deck?
Fire pits, both wood-burning, and gas can be used safely on wood or composite decks provided they are placed a sufficient distance from adjoining structures such as the home, and a heat-resistant barrier is used between the fire pit and the deck to prevent potential structural and cosmetic damage due to the high-heat environment.
Can a deck be used for a wildfire?
The ‘vertically’ enclosed deck, shown in this slide, has incorporated vents into the design (shown with arrows). The lattice fencing used as a vertical enclosure on this deck, plus the vegetation, would be readily ignitable during a wildfire and would not be part a good fire safe design.