If the panel is cut on the flat surface install undersill trim backed by furring into the j channel.
Installing vinyl undersill trim.
Vinyl siding depends on a few special trim pieces that either hold everything together or hide the edges and ends of the panels.
Fitting siding over windows.
Punch snap locks along the cut edge of the panel at 6 152 4mm intervals and snap it into the undersill trim.
Along the tops install j channel trim with horizontal siding and base trim with vertical siding.
Check the section when to install undersill trim you ll now drive roofing nails into the slots spacing them about 8 to 10 inches apart.
When to use undersill trim.
Because the siding is beveled the cut edge under a window may end up about 1 2 in.
Below the cut edge at 6 in.
The images on our website can be used to assist in your purchasing decision but should not be relied on as the sole reference point.
Installing vinyl siding is an involved process which requires a lot of time and skill.
If it falls more than 1 4 in.
To create a balanced appearance divide the length of the wall by the exposure of the vertical panel to be used.
The resulting raised lugs should face outward and will snap into undersill trim.
Install the tops first then the sides and then the bottoms of the window surrounds.
Before installing door and window trim first caulk around the openings to create a moisture and air proof seal.
Out from the wall.
Hold the j channel beneath the window then cut and position the undersill trim if you are using it.
Install door window trim.
If it falls 1 4 in.
Or less away add the undersill trim to lock it in place shown.
Away skip the undersill trim and simply rely on the j channel.
Furring may be necessary to maintain proper pitch of the siding.
As with the siding don t drive the nails in flush.
Undersill trim for instance is installed under windowsills or other horizontal projections and grasps the top edge of the siding panel below it see installing window trim.
Install undersill trim the width of the window flush to the casing.