Caulk The Siding Behind The J

And you generally don t have to caulk between the back of the j channel and the side of the window.

Caulk the siding behind the j.

When searching for the right kind of caulk for your exterior siding quality is obviously important as with any home improvement project cheaper does not always mean better. Caulking your home s siding is a simple process but not necessarily a foolproof one. I have had to do quite a few repairs due to this and it is even worse when caulk was applied to j channel applied to a dormer along a roof. Another item that needs room to play is siding boards themselves.

Yeah i was just worried about if it rains from a certain angle it s going to you know wick down through that gap and then run behind the siding. But if done incorrectly it can lend a sloppy amateurish look. In addition there are several other factors to keep in mind when choosing the right caulk for your siding. Leaking behind the siding down the house wrap till the water finds a nail and nail hole and then into the house.

Caulking this area the j channel can actually cause water to build up and cause leaks behind the siding. Wherever hardie siding meets a trim board the company recommends you leave a 1 8 gap between the siding and the trim and apply a 3 8 bead of approved caulking to protect and seal the edge of the siding. Caulk is by necessity a sticky gooey substance and as such it smudges easily. I was just wondering how many guys caulk the j channel to the window trim anyway.

Sent from my iphone using tapatalk 07 14 2014 08 15 pm. My point is that is far better than water getting in behind the siding. And many homeowners over caulk applying caulk where it doesn t belong and potentially compromising the performance of their siding. A diyer or a novice painter might attempt to achieve a cleaner look by caulking the siding nails but the nail is guaranteed to push the caulking material out within a few months.