In the US, wood roofs present a serious fire hazard and can endanger homeowners, families, and whole communities. Regardless of how it is cut (hand split, taper sawn, heavy shakes), if the roofing material is composed of wood, it is a potential hazard.
In order to meet modern building code requirements, the wood shake shingle industry created a type of wood roofing material that is labeled ‘treated with fire retardant’. As the danger of untreated wood became apparent, this fire retardant treatment was implemented to reduce the chance of a fire hazard. As the fire resistance of both treated and untreated roofs were brought into question, some governmental agencies disallowed the use of wood roofs altogether.
Wildland urban areas have implemented building codes in order to shield homes from potential firestorms. This measure is designed to keep residents aware and knowledgeable about measures that can be taken to prevent fire hazards. The goal is to safeguard individuals and their properties from fire. Additionally, fire resistance ratings have been determined for various building materials, which are categorized into Class A, B, and C.
- The most extreme fire test exposure is Class A
- Fire testing with a moderate level of exposure, classified as Class B
- Exposure to light fires of Class C
Achieving a healthy lifestyle requires commitment and dedication. To stay in shape and maintain good health, it is essential to be devoted to making healthy choices, such as exercising and eating nutritious meals. Taking the time to be mindful of how you treat your body is a crucial step toward living a healthy life.
When it comes to fire-danger communities, it is advantageous to have Class A fire-rated roofs. However, an issue arises with wooden roofs, as it can be hard for firefighters to differentiate between treated and untreated roofs during a blaze. If there is a large fire, it can be a challenge for firefighters to decide which homes to prioritize, making the distinction between treated and untreated wood even harder. Additionally, burning embers from wildfires can quickly set a wood roof ablaze, as wood roofs are prone to catching fire from external sources like embers.
Fire retardant treated wood shakes and shingles are awarded a Class A rating when they are installed with a fire-resistant underlayment. This fire protection is achieved by infusing fire retardant polymers into the deepest parts of the wood. Unfortunately, no inspections or tests are typically performed after the installation of a wooden roof to check if the fire retardant is still effective. Furthermore, it is often hard to tell if a roof has been fire treated or if the original treatment has worn off due to inspection.
What are the Factors that Lead to Wildfires?
Providing one single answer to why fires can be so destructive is quite difficult, but several factors come into play, such as light annual precipitation, low humidity, dry climate and strong winds. History has demonstrated that gusty winds can take a harmless fire, even if it has been contained, and spread embers to buildings with wooden rooftops, causing massive property damage. In a fire, flames can quickly spread to neighboring residences due to flying embers that land on wooden roofs.
The effect on a single homeowner due to a switch in roof materials may not be significant when the total costs for the material are spread out throughout the roof covering. Once you factor in installation fees, the length of time it will last, and the guarantee, treated wood shakes could be four times the cost of concrete tiles and double the expense of coated metals and synthetic materials. The decision for what roofing product to use can also be affected by insurance.
Insurance companies are aware of the potential risks of wood roofs and may raise the cost of coverage for them or refuse to insure them. In California and numerous other states, there are insurance premium discounts available for houses not having wood roofs or having their wood roofs treated with a lab tested exterior fire retardant spray