Curling roof shingles as shown here will show a curling under at the edges of the shingle tab first at the lower edge and sometimes also at the two sides of the shingle tab.
Roof shingles curling up edges.
Click to enlarge any image.
Three reasons for premature curl are.
If the sheathing is properly gapped then the gaps can close causing the shingles spanning the gap to buckle.
Place an extension ladder against the edge of the roof and extend the upper portion so the uppermost rung is at least 30 inches above the edge of the roof.
The overheating speeds up normal deterioration of the shingles.
If you have an asphalt roof that was done more than 12 15 years ago and the shingles are curling it s probably time to get it re roofed.
When plywood or osb sheathing picks up moisture it expands.
They give the roof a finished look while forming a protective seal.
It should come in through the soffit and and rise out of vents at the ridge of a roof.
The page top photograph of curled roof shingles shows a worn out roof that needs replacement as soon as possible.
Poor attic ventilation roofs get hotter and have excessive moisture rising up under the sheathing when there is inadequate air flow.
Old age one of the most common causes of curling shingles is age.
Curling is when the corners of the shingle come loose and curl up.
Simply put your roof just might be too old.
When you notice shingles on your home with edges curling up or down it s a sure sign that the roof is near the end of its useful life.
Put on work gloves.
A curling shingle usually indicates a problem with the shingle itself or the way the shingle was installed.
Curling shingles will expose the roof underneath which could cause further damage to your house.
If you can t afford to replace the roof just yet monitor the area for signs of a leak before calling for roofing estimates or installing a new roof yourself.
Lumpy bumpy or curling shingles that do not lie flat can be problematic but.
Additional heat on the bottom side of shingles can cause them to wear prematurely fade and curl.
Curling is the most common of problems with roof shingles.
The most common cause appears to be movement in the roof sheathing with changes in moisture levels.
The shingles on your roof serve a dual purpose.
It s important to have proper ventilation which regulates the intake and outtake of air in your attic and keeps your shingles at an ideal temperature therefore lessening the chance of curling.