Do not use the as seen on tv liquefied rubber in a can sealants that promise the world but in actuality work very.
Fix leaks in gutters.
If clips or brackets hold your gutters check for broken clips and loose or missing screws.
There should be no more than a inch drop in the direction of the downspout.
How to repair a gutter leak to find the hole where the gutter leak is coming from on a dry day take some water with you in a bottle pour it into the gutter.
Clean the area around the leak step 2.
Check the downspout step 4.
Clean the downspout joints and replace the gaskets step 5.
You may need to remove other gutter or downspout sections near the leaky joint first.
Apply silicone and reassemble.
Patches sealants step 1.
2 clean the joints replace the gaskets.
Remove any screws or connecting hardware at the joint and then disassemble the leaking portion of the downspout.
Apply plastic roofing cement step 3.
Do not apply silicone on top of silicone or on top of the old gutter sealant.