Step 1 attach the j trim along the line that will form the upper edge of the metal siding.
Installing j channel around windows and doors.
This will help keep water from being able to reach underneath the flashing.
Windows and doors install the j channel vinyl siding around all four sides of a window or three sides of a door.
The installation of j channel for snap on lineals is the same procedure as installing lineal starter strip.
Install the trim by nail the longer side of the j to the framing lumber with the washer head metal siding nails.
Notch out 1 inch of the inside top and bottom edges.
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.
Around windows and doors this application works only on 1 faced j channel.
Cut and position an undersill trim if necessary see when to use undersill trim.
Through the middle of the slots.
Overlap the notches with the bottom section and nail into place.
If the top of the window is near an eave but the bottom is exposed to the elements strip off the siding and focus on flashing the bottom half of the window but ignore the top.
Install the j channel around the opening centering the j channel so that each end of the.
Place the j molding along the bottom edge of the window.
Ensure that the sides of the window is taped with the wrap tape to keep water out from the sides of the window.
Drive roofing nails every 8 to 10 in.
Loosely nail every 8 inches in the nailing slots.
Cut and install the top j channel.
The metal siding will slide into the j trim so install the channel with the opening of the j facing the direction of the siding.
Cut and install the side j channels.
Install j channel under the window.
J channel your windows doors and eaves always install j channel around windows and doors along the eaves before you begin applying siding the j channel at the top of the opening should extend over side of j channel by 1 4.
Measure and cut two strips of j channel 2 inches longer than the height of the window.
For the window first position the j channel against the window casing.
Measure the openings and cut the j channel 1 2 less than your measurement.
Position the j channel under the window.