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Understanding Roof Fire Ratings
Understanding Roof Fire Ratings
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  • Residential Roofing Indianapolis



    The roof is arguably the most important part of the home; in fact, without a roof, a house can hardly be called a home. The roof provides comfort, security, and safety from the elements. So if the roof ends up with any kind of damage, it could end up compromising all of the qualities that the roof is supposed to provide. The roof is particularly susceptible to wear and tear since it is exposed to the elements, and in Indianapolis, those elements can be varied and unpredictable.


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Understanding Roof Fire Ratings

In the U.S., all roofing systems are required to meet insurance and building code standards. This includes resistance to fire under roof fire ratings. As it is necessary to be familiar with regulations, here’s a guide you can review to understand these ratings and to keep your property safe.

Understanding Roof Fire Ratings

Roofs are rated as manufacturers submit samples of their roofing products to a certified testing laboratory for certification. These undergo test conditions that determine a roof’s fire resistance. The fire rates are the following:

  1. Class A roofing is the preferred choice for any home. However, this type of roofing is especially vital if you live in an area that is prone to wildfires. To achieve a Class A rating, the roof must be effective against severe fire exposure. This is proven if it can experience the maximum flame spread of 6 feet and resist 15 cycles of a gas flame turned on and off. It should be able to withstand a burning brand measuring 12 by 12 inches and weighing 2000 grams and last one hour before ignition.

  2. Class B roofing is effective against moderate fire exposures. The maximum flame spread should be 8 feet. It should be able to withstand a burning brand measuring 6 by 6 inches and weighing 1.1 pounds, last one hour before ignition, and can resist eight cycles of a gas flame being turned on and off.

  3. Class C roofing provides light fire protection. This normally applies to untreated wood shakes and shingles, plywood, or OSB. The maximum flame spread should be 13 feet. It should be able to withstand a burning brand measuring 1.5 by 1.5 inches and weighs 0.009 ounces, last 20 minutes before ignition, and can resist 3 gas flame cycles.

  4. Unrated Roofing means it could not pass even the requirements for Class C roofing materials. This type of roofing provides little, if any, fire resistance and should be avoided. Understand that most building codes will not accommodate any type of unrated roofing material. Contact a professional to have yours checked or for a roof repair.

Take note of these ratings to help you determine how secure you and your family are at home. Depending on the requirements of your area’s building code, these can also distinguish whether a particular roofing material is even a viable option. Hence, getting the right roofing is essential.

If you’re looking for fast and accurate services, Universal Roofing & Exteriors offers drone roof inspections. Contact us for all your roofing needs at (317) 376-1212 or request a quote. We serve clients in Indianapolis, including Fishers and Zionsville, IN.

  • Contact Us For All Your Indianapolis Roofing Needs



    No matter what kind of Indianapolis roofing project you need done, we at Universal Roofing & Exteriors can help you to achieve it. Whether you want your roof to be repaired or to be replaced completely, we can do it for you. We can send a contractor to examine your existing roof and let you know what needs to be done. Once their assessment is complete, they can give you various options on how to proceed. Once the roofing project gets started, our assigned contractor will make sure that it gets completed as efficiently and quickly as possible.


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There’s no better combination than experience, quality products, and a strong work ethic when it comes to choosing a central Indiana roofing company. That’s why we are confident you’ll be satisfied with our work—so confident that we guarantee your satisfaction before you pay a dime. That’s right­—no payment unless you’re satisfied. Get a free estimate from us by filling out our request form or calling us at (317) 257-0779 . We can’t wait to give your home the attention and care it deserves.

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