Always make roof repairs on a warm dry afternoon.
Roof shingles have many weather cracks.
However in many cases cupping and curling roof shingles is a sign of inadequate insulation and ventilation in the attic.
Cracked or split shingles may be repaired without removing them provided they re still in good condition.
Fixing cracks is another part of the process in which roofing sealant is immensely useful.
Spread some sealant both underneath and on top of the crack.
Cracked shingles occur as a result of inclement weather conditions age and wear over time.
And multilayered architectural shingles are the toughest of the bunch with some.
So splits or cracks can occur in both organic mat based and fiberglass mat based asphalt roof shingles.
Find and fix the cracks.
The shingles will be more supple and less likely to crack.
If heat builds up in the attic and is not relieved by a ridge.
Also if the problems are not extensive the roof may still have life left in it.
And repairing shingles that have cracked.
Architectural laminated shingles have several layers and can withstand stronger winds and weather than 3 tabs.
The adhesive on shingles may also fail to stick in cold weather and may not become fully adhered to the roof until summer.
See organic felt shingle normal wear for details about normal wear splits or cracks and granule loss in organic roof shingles.
Fiberglass shingles are some of the most likely shingles to break in cold weather.
However shingles containing asbestos were phased out in the 1960s and asphalt shingles were made fire resistant using safer inert mineral stabilizers.
Depending on the amount of damage you might only need to to find the cracks and mend them.
Cracking granule loss in asphalt overlay appliqué shingles widespread cracking and irregular but sometimes circular shaped areas of granule loss in the surface of the shingles at the asphalt overlay result from the excessive differential shrinkage of the asphalt overlay and the poor bonding of the asphalt overlay to the underlying layer of granules during the manufacturing process.
Many years ago some shingle manufacturers promoted fire resistant roofing materials that were made using asbestos fibers within the shingles reinforcement.
It may be possible to repair these shingles rather than replacing them.
If the shingles in the area surrounding the damage are old brittle and dry it s probably not worth taking the care to re secure them to the roof.
Curling and cupping roof shingles can occur for a variety of reasons.
You can learn more about securing the shingles in the following section.
Also see organic felt shingle defects for other wear signs on organic mat asphalt shingles.
Gluing down a badly curled shingle.
Sometimes you don t have to replace a roof shingle at all.
And never climb onto a roof that s wet icy or covered with morning dew.
The steps for repairing a cracked or bent shingle include.
