Yes, absolutely! Protecting wooden outdoor benches from fire risk is both possible and increasingly important, especially in areas prone to wildfires or for use in public spaces. Several effective fire-resistant treatments can significantly reduce how easily wood ignites and how quickly flames spread.
The most common and effective method is using penetrating fire-retardant (FR) sealers or coatings. These are specialty products chemically engineered to protect wood. When applied, they seep into the wood fibers. When exposed to intense heat, they react by releasing water vapor and inert gases, diluting the flammable gases given off by the wood. Some also form a protective char layer that insulates the underlying wood, slowing down the combustion process. Look for products that are explicitly labeled for exterior use to ensure they can withstand weather conditions.
Another excellent option is intumescent paint. This type of coating swells up when heated, creating a thick, insulating foam layer that shields the wood from high temperatures. While often used on structural beams, it's also available for exterior applications and can be tinted to various colors, offering both protection and aesthetic appeal.
For the highest level of protection and durability, consider pressure-treated fire-resistant wood. In this industrial process, wood is placed in a vacuum chamber, and fire-retardant chemicals are forced deep into its core. This treatment is long-lasting and is often required for commercial projects to meet specific fire safety codes.
When choosing a treatment, always verify that the product is suitable for outdoor exposure (water-resistant and UV-resistant) and is compatible with any subsequent waterproofing sealants you may wish to apply. For existing benches, thoroughly clean and sand the wood before application. For optimal and certified safety, consulting a professional or selecting products with independent testing certifications from bodies like UL is highly recommended. With the right treatment, you can greatly enhance the fire safety of your beautiful wooden benches.