Installing Vinyl Siding Under Windows

Gap at all ends.

Installing vinyl siding under windows.

To get the depth of the notch measure the distance from the locking tab on the siding below to the undersill trim. 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. Place the piece of siding to be installed under the window along the bottom edge and hold it where it will be located horizontally along the wall. Place the siding that has to be notched under the window.

Mark the siding at 1 4 inch past the edge of each. Longer siding panels don t stretch as readily as smaller ones so they re not as easy to adjust if they get out of whack. When you mark each side add a inch to the width to allow for expansion. For more information refer to pages 28 32 of the vsi vinyl siding installation manual.

Drop siding panel into j channel around top of window and install. A mark the cuts for siding under the window. Vinyl siding installation is designed to hang loosely on the sheathing so that it can expand and contract with temperature changes. Be sure to check both sides for proper fit.

When installing vinyl siding on each side of a window or door start on the side that needs the longer panels. Fitting siding over windows. To install the siding if partial panels are required mark the line to cut by measuring from the edge of the lock of the panel and cut the panel to the proper width. Measure and cut panel to fit.

The siding slides behind vinyl siding trim pieces that hide the gap and the cut end. Measure and cut panel in the same manner detailed in step 14 but cut lower portion instead of top. Install siding around windows. Finishing top row of siding under eaves.

To prevent the relatively thin panels from buckling observe these fitting and nailing rules. B cut the siding to fit under windows. This will leave a panel with an intact nail hem and proper exposure. 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.