A buckle is formed when moisture is trapped under the shingle.
Roof shingles buckling.
This buckling is the result of the shingles being distorted due to movement of the roof deck on which they are applied.
It doesn t matter how old or new your roof is buckling shingles indicate it needs a professional inspection right away.
You also may have curling shingles where the center of the shingle looks concave and the edges turn up.
Asphalt shingles occasionally show buckles or ridges along the length of courses up the roof.
Shingle buckling is one of those awful things that can happen to a roof through no fault of anyone.
The most common cause appears to be movement in the roof sheathing with changes in moisture levels.
Under your shingles there is a layer called the roof sheathing.
Asphalt shingles have never been shown to buckle by themselves.
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.
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.
Buckling describes a shingle that is raised in the middle.
This sheathing is generally made from plywood or a similar material.
This is most probably an indication of poor ventilation.
Buckling shingles are a sign of a major problem with your roof.
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.
Common reasons for buckling.
This lack of ventilation prevents the moisture from exiting the attic space.
If a roof is poorly ventilated and in many cases not ventilated at all moisture will build up in the attic.
Roofs buckle because either the roofing underlayment has wrinkled or the wood deck itself has shifted for some reason.
It is caused as a result of the movement of the wood roofing deck or wrinkling of the underlayment.
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.
Curling and buckling are the most common phrases used to describe the problems with your roof shingles.
Occasionally the buckling is caused by poor workmanship wrong materials or possibly by a problem with the structure itself.
This action causes buckling that can be seen through the roof shingles.
Asphalt shingles sometimes buckle slightly and in an irregular pattern due to moisture in a the materials of a new roofing system.
This then telegraphs to the shingles above.
