If your roof isn’t looking so hot, there are a number of different reasons that can be causing this. Before you contact a roofing contractor for help, learn why it happens so you can avoid it before you call a roofing company to install a new roof. roofing contractor portland
Cause #1: Improper Attic Ventilation
Work on a roof doesn’t just start with just the shingles. It’s important to have ventilation vents too. These vents can keep the attic the same temperature as the air outside the home. Without such, extra heat and moisture can cause the tar on the shingles to lose their stickiness and will give them the opportunity to pull away and curl.
Cause #2: Improper Nailing By A Roofing Company
Before you hire a roofing company, make sure they know what they’re doing. If the shingles aren’t installed correctly, you could have a big problem well before your warranty is up. Each shingle has a nailing pattern that needs to be followed for proper installation. Without this, the shingle can fall downward and curl. Before hiring your contractor, ask how many nails they’ll use for each shingle. It’s important to use four, so if the contractor says they will use three, you could have a problem.
Cause #3: High Nails
As the home expands and contracts due to weather changes, the nails may start to sit upright as the deck moves them outward. If you have an older roof, this could happen simply because of age and isn’t necessarily a product of an inferior installation. However, if your home is fairly new, you may need to contact your roofing contractor to see if this is because of inferior workmanship.
Cause #4: Inferior Shingles
Many homeowners want to work with a qualified roofing contractor, but it’s also important to choose a quality shingle. Don’t be tempted to go with the cheapest you can find, because these are often inferior. A good shingle will have a quality tar line that acts as an adhesive to the other materials and a lesser shingle might have a compromised tar line that can lead to curling, even if it’s properly installed.
Cause #5: Ice Damming
Ice damming occurs when there are ventilation problems in the attic. Without proper ventilation, snow and ice can melt and run down the roof until stopped by ice that hasn’t melted. The water then is trapped, where it sits stagnant and seeps into the shingle. This loosens the adhesive and causes the shingle to curl.
What To Do If Your Shingles Are Curling
If your shingles are curling, it’s only a matter of time before you will need a new roof. It’s best to call a roofing contractor immediately before you develop problems inside your house. An unprotected home is susceptible to water damage, mold growth and more. By the time you notice wet spots on your ceiling, it can sometimes be too late because the water travels through the roof, the attic’s insulation and floorboards before you notice it.