If the roof has.
Roof shingles curling up.
Curling is the most common of problems with roof shingles.
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.
This can include things like number of nails per shingle length of nail etc.
Curling shingles will expose the roof underneath which could cause further damage to your house.
If the sheathing is not gapped the sheathing itself may buckle especially with thin sheathing 24 in.
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.
Cupping is when the center of the shingle is concave or depressed so the tile forms a cup.
When plywood or osb sheathing picks up moisture it expands.
Though it saves on upfront cost this usually leads to premature shingle curling.
Failure to adhere to these specifications can cause your shingles to curl not to mention and void your warranty.
If the sheathing is properly gapped then the gaps can close causing the shingles spanning the gap to buckle.
Spacing and significant changes in moisture.
Over time the cumulative effects of sunlight moisture and changes in temperature can cause asphalt roofing shingles to curl or cup.
Curling is when the edges turn up even if the center is flat.
The shingles on the second layer of the roof won t be as secure and are easily blown and curled by high winds.
Repair of curled cupped roof shingles.
Curl can also happen prematurely on a newer roof.
Because of this it s strongly recommended that home owners work with a contractor familiar with the type of roof they are installing.
Cupping and curling shingles on your roof are a sign that something is wrong.
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.
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.
Three reasons for premature shingle curl.
Poor attic ventilation roofs get hotter and have excessive moisture rising up under the sheathing when there is.
A curling shingle usually indicates a problem with the shingle itself or the way the shingle was installed.
Improper attic ventilation however the most likely reason that your shingles are curling has nothing to do with the roof itself.
Instead the most likely scenario is that your attic is improperly ventilated.
