Use a siding removal tool.
How to put up vinyl siding around windows.
Remove the pieces of vinyl siding from around the window area.
Ensure that the flashing along the bottom of the window overlaps the nailing hem of the last complete course of siding beneath the window.
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.
The width of flashing you use beneath the window will be based on the placement of your vinyl strips.
It should be wide enough to slip under the bottom edge of the fin and overlap the nail strip of the siding below it.
Mark the cuts for siding under the window position the siding to be notched below the window.
Inspect the flashing and building wrap around the window.
Install vinyl siding photo 11.
For the window first position the j channel against the window casing.
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When you get to a window you will need to cut sections from the panels directly above and below it to fit.
Do not cut the vinyl off.
Place the new window in its opening and tack it into place.
Cut two lengths of channel for the sides allowing an extra 2 in.
Extract nails keeping the vinyl pieces in place in order to prepare vinyl pieces to be removed.
Nail it to the wall but remember not to nail it tightly.
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.
Mark it on each side of the window allowing an extra 1 4 in.