Can Your Rain Gutters Damage Your Roof?
The answer to that question is yes! Damage can occur when the gutter openings release water from higher roof areas directly on lower roof surfaces.
What Kind of Damage Can Result?
- Erosion of the mineral granules…on the shingles directly below the gutter opening can occur. This will gradually expose the shingle’s asphalt and accelerate weathering which reduces the life of the shingle.
- Leaks may occur…high volume and force of water being discharged can be strong enough to force water between the shingles and create a roof leak. It may be years for the leak to manifest itself, and by this time extensive damage to the roof, insulation and ceiling may have occurred.
- Algae, mold, fungus, moss or other vegetation may grow…near the point of discharge. Not only is this unattractive but can result in roof damage as well.
- Side walls may be damaged… if the discharge point is near a wall, excess moisture can result in wood rot, mortar deterioration or flashing corrosion that could lead to costly repairs.
What Can Be Done?
- Route the water directly to the ground…using longer downspouts.
- Route the water to another gutter…using a downspout.
- Change the building design…if the building is in the design stage this can eliminate potential trouble spots.
Although, not part of the rain gutter design, keeping your rain gutters clean and free from debris is critical also. Gutters that don’t flow freely can cause a lot of damage to your roof and home, and a lot of frustration and expense for you.
**originally published 12/2/10