Enhance Fire Safety: Fireproofing Tips For Wood Decks

It is important to take steps to fireproof wood decks that are located adjacent to or close to the home, particularly if you reside in a region that is prone to bush/wildfires. As decks are very vulnerable to fire, it is essential to fireproof them. Without this precaution, should the deck catch fire, it could rapidly spread to the windows, doors and siding nearby, and eventually into the residence.

A fire retardant spray should be used to safeguard the deck from fire, and should be applied every few years for routine upkeep joists of the deck. Recently, the IBHS Research Center has conducted tests on embers. It was observed that they get stuck in the spaces of the boards and at the point of contact with the deck. It is essential to ensure that no combustible materials are present beneath the deck as embers can accumulate in these areas as well as on anything stored there, leading to the entire deck being ignited.

source of ignition for a fire

Decks are usually constructed with either solid wood or wood-plastic composites

It is paramount to ensure that the vicinity of the deck is clean of any debris and leaves, as they can be a source of ignition for a fire. This will not only make the deck less vulnerable to fire but will also create a fireproof space around the house. With these easy steps, they can help to protect the residence from fire damage.

Decks are usually constructed with either solid wood or wood-plastic composites. Usually, the walking surfaces are made of boards, with a gap between each one. An alternative to wood boards is fire-retardant vinyl resin planks, as they are practical and not flammable.

Fire-resistant treated products

IBHS tests showed that even without vegetation, a spark between decks could still lead to combustion. Some of the materials used for decking, such as medium-density softwoods like western red cedar and redwood, are not fire retardant and can easily catch embers. Therefore, it is more favorable to use wood-plastic composites or hardwoods with a high density in construction.

Research conducted by IBHS revealed that medium-density softwoods such as redwood and western red cedar, even with no vegetative debris present between deck gaps, can still be ignited by embers.

Decking made from wood-plastic composites or fire-resistant treated products has a lower risk of ember damage. To better protect the natural wood deck from combustion caused by pre-ignition sources, like embers, it is recommended that they spray on an exterior-tested fire retardant.

Steps to fireproof the wooden deck

However, it’s important to prioritize safety and take steps to fireproof the wooden deck

Wooden decks are a popular addition to many properties, providing an inviting outdoor space for relaxation and entertainment. However, it’s important to prioritize safety and take steps to fireproof the wooden deck. 

In addition to childproofing and waterproofing, fireproofing the deck can give peace of mind and protect the property from potential fire accidents, particularly in wildfire-prone areas. Whether they already have a wooden deck or are planning to install a new one, this guide will provide them with essential tips on fireproofing wood decks effectively.

While these tips may not completely eliminate the risk of fire accidents, following them can significantly reduce the likelihood and severity of such incidents.

Consider implementing the following preventive measures to enhance the safety of the wooden deck:

1. Keep Fire Safety Equipment Handy: One of the most critical steps in protecting the wooden deck from fire is ensuring that they have the necessary fire safety equipment readily available. Keep a dedicated fire extinguisher on standby, specifically designed to handle fires on outdoor surfaces. Additionally, ensure that water hoses are accessible near the deck, enabling them to quickly extinguish any potential fire emergencies.
2. Remove Combustible Materials: To minimize the risk of fire, it’s essential to remove all combustible materials from the vicinity of the wooden deck. Store any items that can serve as potential fire sources away from the deck, including materials beneath the deck and within a five-foot radius around it. By keeping the area clear of flammable materials, you can significantly reduce the risk of fire accidents.
3. Practice Extra Precautions with Outdoor Grills: If they have an outdoor grill installed on or near the wooden deck, it’s crucial to exercise extra caution. Never leave the grill unattended while in use and ensure that they fully extinguish the fire after cooking. Taking these simple precautions can prevent accidental fires and contribute to the overall fire safety of the deck.
4. Install a Non-Combustible Enclosure: Consider installing a non-combustible fiber cement enclosure on the bottom joint of the waterproof deck flooring. This enclosure acts as an additional layer of protection, reducing the risk of fire spreading from the ground to the deck. By effectively sealing off this vulnerable area, they can enhance the fire resistance of the wooden deck.
5. Store Flammable Materials Properly: To further minimize the risk of fire accidents, it’s crucial to store flammable materials correctly. Avoid storing any flammable substances beneath or on top of the wooden deck. Instead, find a safe storage location away from the deck, ensuring that these materials are kept in a fire-resistant container or cabinet.
6. Regularly Clean the Deck: Regular maintenance and cleaning are essential for keeping the wooden deck fire-safe. Clean the deck board joints and other areas on and around the deck regularly to remove accumulated debris, such as leaves, pine needles, and easily ignitable materials. By keeping the deck free from such debris, they reduce the potential fuel for a fire and enhance the overall fire resistance of the deck.
7. Ensure Proper Ventilation: If they plan to enclose the deck, it’s vital to provide sufficient ventilation. Adequate airflow is crucial for fire safety, as it helps prevent the buildup of heat and reduces the risk of fire hazards. Always adhere to local building code requirements and consult professionals to ensure that the deck enclosure meets fire safety standards.
8. Repair or Replace Damaged Wood: Regularly inspect the wooden deck for any signs of rotted or damaged wood. These weakened areas can pose a significant fire hazard, as they are more susceptible to ignition and can contribute to the rapid spread of fire. Promptly repair or replace any compromised deck boards and support structures to maintain the fire resistance of the deck.
9. Consider Enclosing the Deck: To further enhance the fire safety of the wooden deck, consider enclosing the other side of the deck with vertical or horizontal barriers. These enclosures can act as additional fire barriers, reducing the risk of fire spreading from adjacent areas to the deck. Consult professionals and adhere to fire safety regulations when planning and constructing deck enclosures.
10. Use a Lab Tested Fire Retardant Spray: Once the deck has been constructed, there are two options available for fireproofing wood decks. They can purchase the lab-tested fire retardant to treat the surface of the deck, or they can switch out certain sections of the wood for a more fire-resistant variety.