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Fire retardant cedar shakes and
shingles can be used as an affordable and convenient
alternative in many areas where the building code
requires flame-resistant roofing materials to be used.
There are three different classes of fire retardant treatments
available:
Class "A" Fire Retardant Treatment
This classification uses a Class "B" fire retardant treated product
along with a UL (Underwriters Laboratories) rated fire retardant
fiberglass cap sheet underlay. A Class "A" product is effective
against severe fire exposures. Under such exposures,
roof coverings are:
- not readily flammable
- afford a fairly high degree
of fire protection to the roof deck
- do not slip from position
- pose no flying-brand hazard.
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Class
"B" Fire Retardant Treatment
Class "B" fire retardant treatment is effective against
moderate fire exposures. Under such exposures, roof
coverings of this class are not readily flammable, afford a moderate
degree of fire protection to the roof deck, do not slip from position
and pose no flying-brand hazard.
Class "C" Fire Retardant
Treatment
A product that is effective against light fire exposures.
Under such exposures, roof coverings of this class are not readily
flammable, afford a measurable degree of fire protection to the roof
deck, do not slip from position and pose no flying-brand hazard.
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Fire Retardant Treated Roofing
