Ensure that the flashing along the bottom of the window overlaps the nailing hem of the last complete course of siding beneath the window.
How to put up vinyl siding around windows.
Use a siding removal tool.
For the window first position the j channel against the window casing.
Cut two lengths of channel for the sides allowing an extra 2 in.
Remove the pieces of vinyl siding from around the window area.
Install siding around windows.
When you get to a window you will need to cut sections from the panels directly above and below it to fit.
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Mark the cuts for siding under the window position the siding to be notched below the window.
It should be wide enough to slip under the bottom edge of the fin and overlap the nail strip of the siding below it.
Inspect the flashing and building wrap around the window.
Mark it on each side of the window allowing an extra 1 4 in.
The width of flashing you use beneath the window will be based on the placement of your vinyl strips.
Extract nails keeping the vinyl pieces in place in order to prepare vinyl pieces to be removed.
Measure the width of the piece you need to cut by holding the length of siding against the window and marking the edge points on the panel with a pencil.
Gap on each side for expansion.
Install the j channel vinyl siding around all four sides of a window or three sides of a door.
Place the new window in its opening and tack it into place.
At windows cut trim channel to match the length of the sill and then nail it into place.
Install vinyl siding photo 11.