Roof Shingles Curling Up

When plywood or osb sheathing picks up moisture it expands.

Roof shingles curling up.

It is rare that it s cost justified to repair a badly curled shingle roof but if it s absolutely necessary perhaps as a stopgap measure while waiting for a whole new roof when making curled shingle roof repairs either work from adjacent surfaces which are in better condition work your way down the roof from damaged areas back to the ladder or prop a ladder up off of the roof surface and. Repair of curled cupped roof shingles. Curling is when the corners of the shingle come loose and curl up. Instead the most likely scenario is that your attic is improperly ventilated.

Over time the cumulative effects of sunlight moisture and changes in temperature can cause asphalt roofing shingles to curl or cup. Cupping and curling shingles on your roof are a sign that something is wrong. Curl can also happen prematurely on a newer roof. 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.

Shingles were improperly installed the most common problem here is that whoever installed your roof didn t use enough nails per shingle or improperly placed the nail. Poor attic ventilation roofs get hotter and have excessive moisture rising up under the sheathing when there is. This can include things like number of nails per shingle length of nail etc. Failure to adhere to these specifications can cause your shingles to curl not to mention and void your warranty.

The shingles on the second layer of the roof won t be as secure and are easily blown and curled by high winds. Three reasons for premature shingle curl. Tar lines that aren t lined up can cause the tabs on the shingles to curl since the adhesive can t do its job correctly. 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.

Spacing and significant changes in moisture. Curling is when the edges turn up even if the center is flat. Curling is the most common of problems with roof shingles. If the roof has.

If the sheathing is properly gapped then the gaps can close causing the shingles spanning the gap to buckle. Improper attic ventilation however the most likely reason that your shingles are curling has nothing to do with the roof itself. If the sheathing is not gapped the sheathing itself may buckle especially with thin sheathing 24 in. Three reasons for premature curl are.

Though it saves on upfront cost this usually leads to premature shingle curling. A curling shingle usually indicates a problem with the shingle itself or the way the shingle was installed.