You ll find patch kits at home improvement centers for about 10.
Bulkhead leaking at top gutter.
Repair larger holes using a gutter patch kit or a scrap of metal flashing glued down with sealant.
Apply a gutter sealant on the interior seams to ensure that the gutter is leak proof.
How to fix leaky gutters.
A tube of sealant costs about 5.
Scrape away loose sealant from the foundation and reseal.
Run water into the gutter at the top of the downspout and watch the drainage at the bottom.
When a gutter is fastened to a roof with items such as hangers or screws they can pop out of place over time.
Build up the area around the bulkhead with topsoil to run water away from the area and extend the gutter discharge about 18 away.
If this is just from rainwater running down the bulkhead door and leaking under it once it dries out probably just a bead of long life 20 year silicone or siliconized latex caulk around the mounting flange on the outside will take care of it comes in several colors.
I m hoping i can do this from the inside only since digging down that far on the outside will be a huge chore.
Seal leaky gutter joints and small holes using gutter sealant applied from the inside the gutter.
If water backs up out of the downspout instead of easily draining remove the downspout s base this.
Cracks and holes are two other common reasons behind gutter leaks.
Also when installing the gutter flashing don t worry about overlapping some sections if they are necessary at least as long as they don t compromise the system in some way.
Loose fasteners are one of the causes of leaky gutters.