And the seam where they meet is a natural weak point in the system.
Rain gutter corner leaking.
If you notice that there is still water leaking add putty on the area of the gutter leak.
Also have him check to see if the eavestrough has sufficient slope to allow water to flow quickly toward the downspouts.
To make sure that you have completely repaired your gutter pour water down your gutter then check if there is water leaking from the crack.
Pull it off the gutter with your fingers or a pair of needle nose pliers.
You cannot add more caulking to old.
You can check yourself.
Remove the old silicone caulk from the joint connection.
Second story gutter corner leaks might not be easy to spot from the ground.
Repair leaking joints with silicone caulk.
If water is leaking where the gutter and downspout jointly connect repair the joint connection.
When they fail to do.
You need to remove the old caulking.
Why gutter corners are troublesome.
One reason is because all corners must consist of at least two pieces of guttering that are affixed together.
Cut the caulk with a utility knife.
If the putty completely solidified water should not be able to go through it.
Ask your third guy to use butyl sealant or a tar based asphalt sealant and spread it at least 1 past the corner on each side.
You first need to clean your gutters thoroughly.
Leaking at the corners may be a sign of standing or accumulating water.
You re wise to address leaking gutters before disrepair causes costly damage to your home.
If you have a little standing water try to dam it up away from the corner using a sponge or an old rag.