Ul Class C Roof

Table 1505 1 requires minimum class b roof coverings for types ia ib iia iiia iv and va buildings.

Ul class c roof. Last 20 minutes before ignition. Ul developed a test to rate the strength of roofing materials. Any ul classified type g1 g2 or g3 base ply sheet type 15 20 or 30 felt or ul classified prepared roofing accessory or gcp applied technologies inc. To meet class a the test specimen must resist 15 cycles class b eight cycles and class c three cycles.

The ul certification mark on roofing products and assemblies is relied on by code enforcement officials and buyers to verify that your products and systems meet regulatory requirements. Ul provides the knowledge and expertise to help consumers make informed decisions on products that affect their daily lives. It also serves as a key differentiator for products within the roofing market. Underwriters laboratory ul standard 2218 is a test method for evaluating impact resistance.

C 15 32 or spaced sheathing incline. Resist three cycles of a gas flame turned on and off. Class a b or c rating is a measurement of the external spread of flame on a roof surface. Fire classification for a building s roof assem bly based on the building s construction classification type.

Experience maximum flame spread of 13 feet. Class a b and c roof ratings helpful hints for achieving code compliance by howard hopper regulatory services program coordinator 2014 issue 1 2 facing a brave new and green world 3 the underlying truth about roofing underlayments 4 photovoltaic systems scan with your mobile qr code reader to find out more about ul support for code. Underwriters laboratories ul is a not for profit independent testing organization that was founded in 1894. A number of fire test laboratories including underwriters laboratories ul and fm global fmg conduct this test using either the astm e 108 or ul 790 standard.

The intermittent flame test. The class a brand weighs 2 000 grams class b 500 grams and class c 9 1 4 grams. Class a roof coverings. Class c roofing provides only light fire protection.

A gas flame is cycled on and off. Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. Examples of common class c. Coated steel or aluminum roofing panels mechanically fastened.

Impacts on asphalt shingles e g from hail can damage them. Ice and water shield. Minimum class c roof coverings are required for types iib iiib and vb buildings. Roofing with a class c rating is able to.