The
process of injecting fire retardant chemicals into the
inner cells of the wood, bonding them to the inner wood
fibers, using specially designed ingredients, along with
the curing process results in:
The fire retardant characteristics
of treated wood shingles exist for the lifespan
of the roofing material.
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To obtain certifications such as the ICBO EX ER 5327,
UBC 15-2, ASTM-E-108, and the NFPA 256, these independent
non-profit government organizations require that our
products pass 10-year simulated weathering and up to
5-years of real life weather and burn tests. This extensive
testing ensures that the fire retardant, when exposed
to extreme natural weathering, will still reduce the
spread of flame, according to the UL (Underwriters Laboratories)
specifications.
Ultra violet radiation, the most damaging element to
long-term exposure to weather, has been proven over history
to only affect the surface of the shingle. Pressure impregnated
fire retardant shingles have chemicals imbedded inside
the product, which makes this topical exposure irrelevant.
Rain, freezing temperatures, and wind cannot remove
the fire retardants from within the shingles. This is
due to the curing process that bonds the chemicals to
the inner fibers of the wood.
No topical or spray-on fire retardant product
on the market can compete with the lifespan of the
pressure impregnation process.
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