How To Install Vinyl Siding J Channel Around Window

For the window first position the j channel against the window casing.

How to install vinyl siding j channel around window.

You have to wrap the window with vinyl j channel to divert water and to cover the ends of the siding photo 9 you ll probably have to buy new strips for this. Longer than the width of the window. In from each end and deeply score the inner cutting line with a utility knife. Mark cut and notch the top.

Nail it to the wall but remember not to nail it tightly. Continue installing courses of siding along the sides of the window leaving 1 4 inch spaces within the j channel at the end of each piece of the siding for expansion.