| |
 |
| |
|
|
|
| |
|
|
![[Fire treated roof]](img/flame_test.jpg) 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.
|
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.
![[Fire Safety Roof]](img/Saved-cedar-roof.jpg)
|
| |
| |
|
|
|
|
Fire
