If you have a lot of trees in your yard, especially growing close to your home, your asphalt shingle roof could be in danger of damage. The following guide will provide you with the trouble signs to look for, along with what you can do to prevent the damage from occurring in the first place.
Branches that scrape along the top of the roof are likely causing major damage. These branches, especially in windy weather, can rip off shingles. Even if the shingles remain secure, the protective gravel from their surface can be dislodged, which increases the chances of degradation and eventual leaks. The worse case scenario is that a tree actually manages to pierce the roof sheathing and allow water in.
The fix is relatively straight forward – have the trees trimmed back so they don't scrape against the roof, even in a strong wind. Then, have a roofing contractor inspect the roof to make sure the branches haven't caused any major damage.
Moss and algae
Green and black moss and algae stains tend to show up in areas where the roof is in constant shade from the trees. This is generally only a cosmetic issue, although sometimes the moss may begin growing between shingles, which can result in moisture collection and leaks.
There are two fixes that can handle all moss issues when implemented together. First, trim back the tree to allow some light penetration. Next, hire a roofer to install a zinc strip beneath the shingle closest to the peak of the roof. Moisture causes zinc, which can't be seen from the ground, to leach down the shingles. Moss and algae can't survive contact with the zinc, so they stop growing.
Eave and soffit issues
There are several ways that trees can affect the eaves and soffits of your home. The most obvious way is from gutter damage. Damage occurs when trees grow against the gutters and bend or dislodge them so they can't drain properly. Leaves and twigs from the trees can also collect in gutters, causing them to overflow. Trimming back the trees an cleaning the gutters solves these issues.
Another type of damage occurs when large branches actually physically damage the eaves or soffit of a house. Crushed or collapsing eaves, for example, are a common issue when a heavy branch rests on the edge of the roof. You will need to have the branch removed, then a roofing contractor like those at Rainy Day Exteriors will need to rebuild the eave.
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