Roof Rating System

How are roofs rated.

Roof rating system.

A standard fire test is used to determine the fire rating of a roof covering. Numbers can also be combined with a color rating as a visual indicator. One principal aim of the guideline is addressing the need to certify existing buildings. Class a class b class c or unrated.

As you research shingles check our comprehensive ratings to see what the best roofing lines are. A new rating tool roofpoint is designed to assess energy efficiency environmental impact longevity and other complex roofing issues that a comprehensive whole building system like leed may overlook. 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. There are experienced inspection companies system suppliers and organizations that provide opinions on what ratings should be used for roofing inspections.

Your roof can have one of four fire ratings classifications. The cool roof rating council is a not for profit organization that validates the reflective and emissive properties of cool roof products. 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. 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.

The cool roof rating council accepts test reports from approved testing laboratories and then compiles the information in an easily accessed database. 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. There may be a number rating 1 10 1 100 or a naming standard good fair poor etc.

These tests may be conducted at ul inc fm global or any other certified testing laboratory. We have collected reviews on more than 30 different brands of roofing shingles. This test evaluates the following performance criteria. Roofing systems must meet or exceed building codes and insurance requirements.

The shingles with the highest level of satisfaction appear first lower levels come later in the list. Astm e108 defines fire test methods for roof coverings.