Caulk The Siding Behind The J

Leaking behind the siding down the house wrap till the water finds a nail and nail hole and then into the house.

Caulk the siding behind the j.

I was just wondering how many guys caulk the j channel to the window trim anyway. But if done incorrectly it can lend a sloppy amateurish look. Inspect the area above the leak including both indoors and out. Caulking can be placed behind the j channel during installation sealing the seam between the j channel and the house wrap also sealing the seam between the j channel and the window itself.

I know it looks like there s a big gap there but that s pretty typical. Some of the most commonly caulked areas of siding include both corners and crevices as well as some butt joints and window and door trim boards. Use a caulking gun to apply a continuous bead of silicone sealant along the vertical seams between the vinyl j channels and the exterior window casings. If they need if it needed to be caulked they would have done that.

Caulking your home s siding is a simple process but not necessarily a foolproof one. Check to be sure weep holes are open along bottom of window openings. Siding caulk can be used on several different areas of your exterior siding to help prevent water damage and moisture buildup. We only caulk butt joints on cedar siding if previously caulked.

My point is that is far better than water getting in behind the siding. Caulk is by necessity a sticky gooey substance and as such it smudges easily. Caulking windows to give them a finished look inside and out and seal out leaks and drafts is a fairly common diy task. Trim boards wood windows.

Sent from my iphone using tapatalk 07 14 2014 08 15 pm. Fiber cement boards are caulked only when there is no metal flashing behind them. Many vinyl siding installers do not realize the importance of the house wrap and its job as the sole water barrier because many people incorrectly believe that vinyl siding keeps the water out.