Installing A Window Sill Extender

One piece for the head and one for the sill.

Installing a window sill extender.

Press the sloped sill adapter onto the sill of the window. If an extender isn t permanently fastened to a wall or sill then position your plants carefully so the extender doesn t become stressed near an edge and collapse. 30 door 30 32 door 32 34 door 34 step 3 installing sill extender with the sill extender cut to the proper length attach the extender to the sill that is on the door system. You can replace your entire window sill to get the space you want or you can simply extend the window sill you already have.

To see hands on demonstrations of techni. Casements and awnings are not compatible with a sill angle or head extender. Check this dimension against the shorter pieces of frame pocket filler. Dows before window installation.

Step 1 finishing the current window sill. Install filler by snapping leg of filler into. A sill extender is shipped with your order to allow height adjustments and is field trimmable. Apply firm pressure to the adapter at the tape location to ensure proper adhesion to the window frame.

Measure across window from jamb to jamb at the head and sill. This measurement is your window sill length. Sill extender is field trimmable for any necessary adjustments. If filler is too long trim to the measured length.

Use sandpaper to make sure the edge is flush and that it is smooth as well. Install vinyl sill extender by sliding the extender up into the frame channel. Use a saw and cut the window sill flush with the wall on either side of the window. Mark a reference line on the wall on each side of the window.

A permanent extender requires the installation of brackets into the wall studs beneath the window. Measure the distance between the two wall marks then add 1 1 2 inches to factor in your overhang on each side.