Roof Shingles Buckling

This action causes buckling that can be seen through the roof shingles.

Roof shingles buckling. Asphalt shingles sometimes buckle slightly and in an irregular pattern due to moisture in a the materials of a new roofing system. Shingle buckling is one of those awful things that can happen to a roof through no fault of anyone. A buckle is formed when moisture is trapped under the shingle. But the moisture evaporates as the materials reach equilibrium with the the surrounding air and the shingles settle back down flat.

And this is a serious problem because if minor buckling is not addressed it could require a full roof replacement. You also may have curling shingles where the center of the shingle looks concave and the edges turn up. Under your shingles there is a layer called the roof sheathing. The pieces of sheathing are supposed to be spaced about 1 8 inch apart so that they have room to expand and contract as the temperature changes.

The most common cause appears to be movement in the roof sheathing with changes in moisture levels. It doesn t matter how old or new your roof is buckling shingles indicate it needs a professional inspection right away. This sheathing is generally made from plywood or a similar material. Asphalt shingles have never been shown to buckle by themselves.

Buckling describes a shingle that is raised in the middle. Curling and buckling are the most common phrases used to describe the problems with your roof shingles. Buckling shingles look like something is underneath the shingles pushing them upward. Buckling of asphalt and fiberglass shingles is a fairly common occurrence although it usually occurs in the first year after installation and sometimes diminishes over time.

This then telegraphs to the shingles above. Buckling shingles are a sign of a major problem with your roof. Roofs buckle because either the roofing underlayment has wrinkled or the wood deck itself has shifted for some reason. This buckling is the result of the shingles being distorted due to movement of the roof deck on which they are applied.

Common reasons for buckling. This is most probably an indication of poor ventilation. The wetness gets absorbed by the felt underlayment causing the felt to wrinkle. Ripples or waves on the roof surface are a sure sign that the shingles or decking has probably buckled.

Buckling shingles can sometimes be traced back to mistakes made during roof installation even though the buckling may not show up for a year or two after you get a new roof. Occasionally the buckling is caused by poor workmanship wrong materials or possibly by a problem with the structure itself. If a roof is poorly ventilated and in many cases not ventilated at all moisture will build up in the attic.