Top Four Reasons Your Shingles Are Buckling and Curling

September 12, 2018 9:45 pm Published by Leave your thoughts

Buckling and curling shingles are signs of a deteriorating roof. While you may be able to see buckling or curling from the ground, the best thing to do is call a professional to assess your roof. Here’s a quick look at these terms:

  • Curling: Curling is a common problem in roofs that is pretty easy to spot. Major curling will disrupt the uniform look of your roof. For example, there will be a row of flat shingles, but a row around it may have several curling shingles that stick out. One reason for curling is improper storage of the shingles prior to installation. Other causes include poor quality materials and natural wear and tear. Curling shingles will leave the structure underneath exposed to the elements—water is the most damaging.
  • Buckling: The reasons for buckling shingles are similar to curling shingles. They can form because of things like poor attic ventilation and a lack of insulation, but shingles that buckle could also be caused by poor fastening during the installation process, either with poor back coating or using nails that are the wrong length.

So, why are your shingles buckling and curling? Let’s get some information from an experienced shingle roofer in Salt Lake City, UT.

Shingles not installed properly

A top reason for buckling and curling shingles is improper installation. The installer didn’t use enough nails to hold each shingle or placed nails in the wrong spots. Both of these things are sure to make your shingles curl. Why? Whether there are not enough nails or incorrect nail placement, the shingles in question will slowly pull up from the roof and become loose.

Shingles don’t line up properly

Adhesive strips called tar lines are found on each shingle. This tar line must line up on each shingle or it won’t adhere properly. So, if the shingles were not lined up right, they will curl, and may even fall off in time.

Attic has poor ventilation

The hot air in your home will rise upward—this means it will reach the attic. Hot air won’t be an issue for well-ventilated attics. Any excess moisture will simply circulate around the space and leave the attic. On the other hand, an attic with poor ventilation will trap in all the moisture from the hot air. If moisture gets into the decking, mold will form, and you could end up with curling shingles.

Roof over a roof

Multiple layers of roofing can cause shingles to buckle and curl. This type of roof has a second roof placed directly on top of an old one. Though this is not usually recommended by professionals, a homeowner may choose this option in an effort to cut costs—it’s cheaper to add a second layer than to remove an old roof and install all new materials. The downside to layering is that the second layer of shingles won’t be as secure as the original shingles, meaning they can more easily be blown off or curled by strong winds.

Contact Stubbs Roofing, Inc. anytime for more information or to speak with a shingle roofer in Salt Lake City, UT!

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