Roof Brittle Test

Pinch a small corner of a shingle between your thumb and forefinger try to fold or bend that corner up to a 90 degree angle if.

Roof brittle test.

Some inspectors refer to the brittleness test as un bonding a field shingle and lifting the end of the shingle until it is x inches above the roof surface. If it cracks creases or breaks during the test or at the 45 fail. 1 1 this test method covers the determination of the temperature at which plastics and elastomers as defined by terminology d883 exhibit brittle failure under specified impact conditions. Astm e1105 and aama 501 2 test methods are good overall methods commonly used to test exterior walls sloped glazing and shallow pitched roofs to help identify leak sources.

That slope is not repairable due to brittle. U test the shingle by lifting bending it at a 45 angle. Pour seventy degree water over shingle to tested wipe damp dry use laser pointer thermometer to insure shingle is over 50 degrees. However the lifting force is not specified and rarely is the lifting dimension justified.

Two routine inspection and acceptance procedures are also provided. Get video for a new 60 minutes piece. The brittle shingle test is a super scientific testing method whereby an inquisitive person picks up a shingle tries to fold or bend the shingle up to a 90 degree angle and then checks to see if the shingle breaks or bends. Spray testing is the use of controlled water flow deposited on building components in a manner that simulates normal to severe weather conditions.

On roofs that have borderline hail or wind damaged it is important to perform a brittle test in order to determine whether or not the roof damage is repairable and may help you reach the 25 required to be deemed damaged from the peril wind or hail that will allow a total roof replacement. Each slope stands on it s own at this point until depends on carrier you ve hit the 65 rule. If the shingle breaks then the shingle is brittle and the roof probably needs to be replaced. It is then raised and lowered 45 degrees three times.

When testing rubbers for impact brittleness use test method d2137. During a brittle test and the shingle is loosened at its lower edge from the shingle below it. If none of that happens pass. Call allstate supervisor for check list so you can comply with their needs.

If a homeowner has no concerns with heights in general climbing a ladder or walking on a roof there is a simple procedure that can be used to test for brittle shingles.