Fire-Resilient Roofing in Los Angeles Let’s get this out of the way. In California regulation does not gamble on inferior materials. In some places it’s actually illegal to get a roofing replacement that isn’t made of a material with an A rating against fire resistance. Roofing Fire-Resistance Ratings Class A – Roof coverings are effective against severe fire test exposures. Under such fire exposures, roof coverings of this class afford a high degree of fire protection to the roof deck, do not slip from position, and are not expected to produce flying brands. Class B – Roof coverings are effective against moderate fire test exposures. Under such fire exposures, roof coverings of this class afford a moderate degree of fire protection to the roof deck, do not slip from position, and are not expected to produce flying brands. Class C – Roof coverings are effective against light fire test exposures. Under such fire exposures, roof coverings of this class affor...
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