"How to: Seal Gutter Junctions"

 By Ron Stultz

9 March 2010

Summary: Easy do-it-yourself  (DIY) to completely seal gutter junctions but must be super cautious up on ladder working on gutters.

I do not have many gutter "corners" or "junctions" on my large house and in some locations, it does not matter than right at a gutter junction, the junction will drip water for days and days after a rain but in other locations I want, need, a gutter junction to be completely sealed.

How to Seal Gutter Junctions:

1. If you do not own a caulk gun, buy one. $6 everywhere. Get type that has built-in rod available to penetrate sealed end of caulk tube.

2. Buy a caulk gun tube of Henry 108R roof sealant. Henry 108R will absolutely, positively seal a gutter.

3. With the gutter junction to be sealed, dry and clean of any debris, use caulk gun gutter seal to cover gutter junctions and all screws holding junction to main gutter on the inside of the junctions. Use a liberal amount and then use a finger to smear sealant.