They can withstand strong wind gusts flying debris and hail.
Fire rated roofing felt.
Underwriters laboratories has defined the ul 790 standard tests of roofing material fire resistance to external fire sources.
Versashield fire resistant roof deck protection provides the very best fire protection.
It simply takes longer for fire to affect fire resistant materials.
The highest rating meaning the most fire resistant is classified as class a and is able to withstand severe fire exposure.
Class a is the highest rating offering the highest resistance to fire and unrated is the worst.
Fire ratings for roofs are classified as either class a class b class c or are unrated if a roof covering cannot meet the requirements for any of these classifications.
Roofing underlayment or felt is usually required for the ul fire rating to apply since shingles are usually tested with underlayment.
In some jurisdictions roof assemblies are required to be fire resistant.
This product slows down fire burning similar to what a roof shingle would do so it is ideal under metal roofs where the shingles have been removed.
Architects contractors and building and homeowners select metal roofing for its longevity durability and energy saving qualities.
This is also why materials themselves are rated in respect to how long it would take fire to affect its structural abilities.
Firesmart capsheets provide a fire protection layer shielding the roof from both spread of flame and fire penetration.
The signature range is a torch applied built up bituminous membrane roofing system.
Metal roofs are durable and can last up to 75 years.
Roof covering packaging that encloses shingles or other roofing that have a fire rating will display the level of fire or wind resistance rating of the materials.
So for the national class designations aa is the top fire rating possible for a flat roof build up.
The different roofing materials that are available for installation on your home are all evaluated for their fire resistant capabilities.
No not at all.
Firesmart is a flat roofing membrane system.
Fires that originate outside of the structure itself.
Felt will become brittle like a potato chip and crumble with time.
Metal roofs with rustproof coatings do not crack.
The key is to construct a building in which a fire would take effect slowly allowing the occupants plenty of time to escape.
The synthetic roof underlayments are far superior and many jurisdictions no longer allow felt.
Also felt is flamable.
How firesmart protects against flame spread fire penetration see video how the firesmart roofing system has been tested.
The roof deck should be sound and level before laying the underlayment.
The rating scale is relatively simple and is rated from a to c.
Versashield fire resistant roof deck protection is a key part of the gaf lifetime roofing system 1 and has earned the good housekeeping seal.
