Roof Shingles Delamination

With the shingles installed in an overlapping fashion each shingle will end up with a second row of fasteners attaching them to the roof deck and therefore eight total fasteners per shingle image 2.

Roof shingles delamination.

Deteriorated shingles that show evidence of curling cracking splitting or openings should be replaced with new shingles. If moisture gets between the membrane of the roof and the shingles this can also cause delamination. Asphalt based cements should only be applied at the underside of shingles. How to identify types of asphalt shingle roofing failures defects causes photographs of asphalt roof shingle cracking types photographs of organic felt asphalt roof shingle failures shingle cupping curling cracking fishmouthing granule loss asphalt roof shingle blisters and splices photographs black stains on roofing extractive bleeding moss lichens on shingles storm damaged.

Granule loss in a natural path of travel on the roof is usually caused by scuffing from foot traffic. Delaminations commonly affect single ply and fully adhered roofs. Or by anomalies in the manufacturing process that create areas of weakness that fail before the rest of the shingle. The good news is that this problem usually occurs when the shingle warranty coverage is 100 i e before the proration begins standard 10 years system plus 50 years golden pledge 50 years for.

Worn or weathered asphalt roof shingles which are losing their mineral granules in the course of normal aging if inspected early in the wear cycle already show small areas of granule loss beginning with bald areas on the shingles which may be just the diameter of a few mineral granules. Flaking organic shingles flaking is the delamination of the upper layer of the asphalt which bonds the granules to the lower layer of asphalt that saturated the organic shingle mat. If the environment is humid moisture can get trapped between the membrane and insulation. When the layers of dimensional shingles aren t properly fused they can begin to come apart in just a few months after installation.

This delamination can cause both water and wind damage to the existing roof. Incompatible materials will contribute to further shingle delamination. Look for damage to the shingle butts. Like blisters delamination can come from improper installation in inclement weather.

Flaking is a term often used to describe localized delamination. When the membrane and insulation separate.