Four of the most common problems rain gutters incur are leaking, sagging, overflowing, and pooling runoff around the house. If left unattended, any one of these conditions can cause serious water damage to the house and its foundation.
If your gutters are leaking, the prime suspects are the joints between sections. Standing water in gutters eventually will rust galvanized steel seams or seep through the seams in aluminum gutters.
Allow the insides of the gutters to dry out, and brush leaking seams clean. Apply silicone or special gutter caulking compound along the seams on the inside and outside to seal the leaks.
Patch small holes with roofing cement. Use a putty knife to spread the cement generously around the hole. Try to do this on a warm day, but, if the weather is cool, warm the cement to room temperature so it spreads easily.
Repair larger holes in gutters by covering them with patches. Take a sheet-metal patch, embed it in asphalt roofing cement, and then apply another coat of cement over the patch, as shown below. Note: To remove roofing cement from your hands or tools, use vegetable oil on a rag.
Gutters that overflow can present serious problems to your home’s walls and foundation. If your gutters overflow during a heavy rain, either the gutters and/or downspouts are clogged, the gutters are sagging and thereby preventing water from reaching the downspouts, or the gutters and downspouts are not large enough to handle the volume of rain runoff.