Installing Vinyl Siding Around Windows With Integrated J Channel

On the top of the window don t run it to tight leave room for the water to run off.

Installing vinyl siding around windows with integrated j channel.

Through the middle of the slots. It does not drain water off the top of the window but to both sides where some it will end up behind the siding when leaving the bottom of the side j s it s a built in fault with regular and integral j s and the way 99 of people install vinyl and similar sidings. Cut and position an undersill trim if necessary see when to use undersill trim. Alternatively i use vinyl window and door casing which is essentially a 2 1 2 in.

Windows and doors install the j channel vinyl siding around all four sides of a window or three sides of a door. When i know a house will be sided in vinyl i select windows that have either an integral j channel or a slot to receive an applied cap that creates a receiver channel. No pieces to separate. I only use plywood.

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. Position the j channel under the window. Caulk behind the vinyl nailing flange of the window first then install grace strips over the flange and then you can run your siding right into the window j channel. For the window first position the j channel against the window casing.

The intergral j is a real bad idea. Lats are ok but they tend to split too easily especially if you are nailing the window every other nail slot. Integral j is fine its actually better. The vinyl siding trim pieces should slide back and forth slightly.

Don t drive them tight. Nail it to the wall but remember not to nail it tightly. Traditionally j channel was a siding trim molding fastened around windows and doors which then received the siding. Another option is crane board makes an adapter that snaps onto the windows built in j channel that turns it into a 1 1 4 deep j pocket for use with their insulated siding.

Install j channel under the window.