Class A Roofing System

Experience maximum flame spread of 6 feet. Factory Mutual to meet I-90 wind uplift.

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To roof coverings intended for installation on either combustible or non-combustible decks.

Class a roofing system. Contrary to what many think there are no Class A roofing membranes. What a Class A Rated Tile Roof System Means Every year we hear on the news about homes being consumed in wildfires. Fire resistance is based on two test standards.

A Class 1 roof has undergone a series of tests that evaluate the entire roof assembly including the external spread of flame test utilized for the Class A rating. Class A is the highest level. Class a roofing works with homeowners architects designers and builders to make sure that every home has the right roof.

Gravel-surfaced built-up roofing and ballasted single-ply systems usually meet Class A while mineral surfaced roofings may be Class B. Due to the materials used in their construction most asphalt shingle roof assemblies have a Class A fire resistance rating. Class A roof coverings which are effective against severe fire test exposures Class B roof coverings which are effective against moderate fire test exposures.

Even if you live in an area where wildfires are not likely lightning strikes or. ROOF SYSTEMS There are three types of DURAGARD Systems. Under all of these tests roof coverings afford a level of fire protection severe for A moderate for B and light for C to the roof deck do not slip from position and are not expected to produce flying brands.

A well engineered de-icing system can prevent the build up of ice that leads to Ice Damming - a leading cause of water intrusion in Alpine areas. The operative word here is systems. Class A roof assemblies also include ferrous or copper shingles or sheets metal sheets and shingles clay or concrete roof tile or slate installed on noncombustible decks or ferrous copper or metal sheets installed without a roof deck on noncombustible framing.

Substitution of any component not specified in a Class 1 assembly will nullify the Class. The system is also listed with FM. Copper slate synthetic or composite shingles foundation systems de-icing systems or metal fabrication the answer is class a roofing.

Short for thermoplastic polyolefin TPO is a single-ply roofing membrane that offers excellent performance at a cost-effective price. Please check out the systems available in our Products Section Manufacturer Links. Building Code Fire Resistance Requirements Building codes establish fire resistance requirements for roofs based on the type of construction eg concretesteel wood for the building.

They have achieved this through providing the best results through a variety of tests. UL CLASS A Industrial Roof System. Class A Roofing knows.

Class A fire testing is considered severe fire test exposure while Class B is considered moderate fire test exposure and Class C is considered light fire test exposure. Heat-welded seams provide superior strength. If the roof deck is combustible such as wood plywood or OSB two additional tests must be conducted.

If you are looking for a roof that has the most fire protection possible you will want to consider Class A. All Class 1 roof assemblies are Class A roofs but not all Class A roof systems meet the Class 1 rating. It is not limited to thickness or incline restrictions like most foam roofing systems.

To achieve a Class A rating the roof must be effective against severe fire exposure. Roof systems are segregated into combustible and non-combustible construction types. Under UL 790 roof systems are evaluated for external fire.

This standard includes three classes of fire exposure. Some unsurfaced systems such as asphalt glazing may be Class C or even unrated. For combustible decks the systems are evaluated for.

This is proven if it can. The Fireguard SBS roofing system is manufactured with fire-retardant chemicals qualifying the assembly for the UL Class AB fire rating over combustible and noncombustible deck. UL 790 and ASTM E 108.

Class A roofing is the preferred choice for any home but this type of roofing is particularly important if you live in an area that is prone to wildfires. When it comes to premium fire protection Class A roofs have earned the highest rating. In the TahoeTruckee area even the best roofing systems can succumb to extreme icing conditions.

Both are burn-through tests and the ultimate roof systems rating. Furthermore Class A rated tile roof systems are usually eligible for the lowest fire insurance rates. Since tile roof tiles are noncombustible they enhance a structures level of fire safety.

There are three levels of fire resistance. Tested roof systems are fire classified Class A B or C where the most fire-resistant roof assemblies are Class A and Class C is least resistant. A roof is classified as a Class A as the result of one test the external spread of flame test ASTME 108 or UL 790 Standard.

The thought of a horrific incident like that sends shivers down any homeowners spine. The roof is the most vulnerable part of any home during a wildfire. This system is classified for all types of roof deck construction for fire resistive construction methods.

Class A roof assemblies include those with coverings of brick masonry or an exposed concrete roof deck. TPOs long-term heat UV and natural fungal resistance plus flexibility without need for plasticizers also make TPO a reliable low-slope roofing system.

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