Gutter leaks usually start at rusty spots or seams that have opened up because of expansion and contraction.
Fix leaking roof gutter.
Prepare the gutter by scraping out as much old tar or caulk as possible.
Use liquid rubber to extend the life of your leaking rusted gutters and box gutters.
Do not apply silicone on top of silicone or on top of the old gutter sealant.
If clips or brackets hold your gutters check for broken clips and loose or missing screws.
Liquid rubber seals brick masonry chimney.
By applying liquid rubber and geo textile bandage you will achieve a sound waterproofing membrane easily and cost effectively.
The waterproofing product that professional waterproofers use.
Do not use the as seen on tv liquefied rubber in a can sealants that promise the world but in actuality work very.
Water will eventually find its way.
If your gutter is still basically sound the easiest way to stop the leak is by covering the damaged area with roof and gutter repair tape available at home centers and hardware stores.