The bond will not be permanent and the leak.
Best way to seal old gutter leak.
Some sealer is water based and may do ok in light moisture conditions but it is best if you check the gutter clean the debris and if its wet wait for a hot day so it will be completely dry.
You need to remove the old caulking.
Do not apply silicone on top of silicone or on top of the old gutter sealant.
Water will eventually find its way.
A waterproof sealing product such as ge clear gutter caulk available on amazon is easy to use.
Do not use the as seen on tv liquefied rubber in a can sealants that promise the world but in actuality work very.
You cannot add more caulking to old.
Lower the uphill piece back into place and press them together for several seconds to make sure you evenly distribute the caulk.
For sealing and joining lap seams in aluminum or vinyl gutters and downspouts we recommend a permanently flexible and water resistant sealant.
You first need to clean your gutters thoroughly.
If possible flush out gutters with a garden hose then allow them to air dry for a clean fix.
Squeeze a bead of sealer along the seam joint and then smooth the sealer to allow easy flow of water through the gutter.
Replace all pieces that make the seam and then finish by re adding the screws.
Fix the seam seal use the caulking gun to apply sealant on the inner lip of the gutter segment known as the downhill.
If you have a little standing water try to dam it up away from the.