Roof Rating System

A class a roof is ideal for fire protection and may be required by your building codes depending on your place of residence.

Roof rating system.

How are roofs rated. These tests may be conducted at ul inc fm global or any other certified testing laboratory. The cool roof rating council is a not for profit organization that validates the reflective and emissive properties of cool roof products. This test evaluates the following performance criteria.

One principal aim of the guideline is addressing the need to certify existing buildings. Astm e108 defines fire test methods for roof coverings. We have collected reviews on more than 30 different brands of roofing shingles. A standard fire test is used to determine the fire rating of a roof covering.

As you research shingles check our comprehensive ratings to see what the best roofing lines are. In cr s roofing tests we found that some shingles are more than twice as strong as others that. There are experienced inspection companies system suppliers and organizations that provide opinions on what ratings should be used for roofing inspections. There may be a number rating 1 10 1 100 or a naming standard good fair poor etc.

In short roofpoint is a voluntary guideline and roof rating system developed by ceir. 1 flame penetration through the roof covering into the attic space 2 flame spread over the surface of the roof covering and 3 the propensity for the roof covering to become dislodged and generate embers. Numbers can also be combined with a color rating as a visual indicator. Fire ratings may pertain to resistance to fire from above the roof system the familiar class a b or c ratings or fire exposure from the building interior the underside of the roof deck.

It is designed to evaluate both new and replacement roofs for commercial and institutional low slope buildings says craig silvertooth executive director of ceir. These ratings are presented below. The shingles with the highest level of satisfaction appear first lower levels come later in the list. Class a class b class c or unrated.

The cool roof rating council was created in 1998 to develop accurate and credible methods for evaluating and labeling the solar reflectance and thermal emittance radiative properties of roofing products and to disseminate the information to all interested parties. Your roof can have one of four fire ratings classifications.