Clear gutter's of twigs, leaves, and any other debris in the spring or fall.
If not, water could overflow and get into your house.
Using a ladder, lean it against the house, not your gutter, and wearing gloves, climb up and try to remove debris with your hand.
If you have a clogged upper downspout, use a plumber's snake to unclog it.
With a garden hose, flush the cleaned gutter's and downspouts.
To prevent any future clogs, install copper leaf or stainless steel strainer's in the downspout.
Patching Holes- To patch holes in gutter's you will need a fiberglass patching kit and a small box of either #6 or #7 (1/2 inch) sheet metal screws; available at your neighborhood home improvement center.
If a metal gutter has a leak at the joint, the joint overlap might not be right, that means, water is running against the seam rather than over it.
Take the gutter apart and reconnect it using the sheet metal screws , then, apply the aluminum sealer.
To adjust gutter pitch- Overflowing may be caused by an improper pitch.
If you have standing water in a clean gutter, reset its pitch.
The first thing to do is to check that the gutter is touching the overlapping shingles at the high end; adjust it if necessary.
One inch below the bottom of the gutter at each end, drive a nail into the fascia (the board at the very top of the wall).
Draw a string line taut between the two nails.
Use a line level and run a level string a couple below the first.
Measure between the two lines every four feet.
The distance should increase 1/4 inch for each four feet.
If it doesn't, reset the gutter.
Starting at your downspout end, disconnect, then, reconnect three or fours hangers at a time.