If water is leaking where the gutter and downspout jointly connect repair the joint connection.
Repairing a leaky gutter joint from the outside.
You cannot add more caulking to old.
Use a commercial grade gutter sealant and simply re apply where needed in a thorough manner.
Apply silicone reassemble.
You need to remove the old caulking.
Cut the caulk with a utility knife.
You first need to clean your gutters thoroughly.
The bond will not be permanent and the leak.
Remove connecting hardware step 2.
7 years ago on introduction.
Pull it off the gutter with your fingers or a pair of needle nose pliers.
Finally thoroughly clean the area of dirt debris shingle granules etc so that the new repair will hold properly.
Allow 24 48 hours dry time yes avoid any rainy days in the forecast and you should be good to go.
Remove the old silicone caulk from the joint connection.
Prior to have my gutters replaced they were butted together but not like in.
Gutters should run the whole length of your house.
Caulk sealants step 1.
Pretty strong and made to stay outside for years anyway.
Clean the joints replace the gaskets step 3.
It ticks all the boxes.