Installing A Window Sill Extender

A permanent extender requires the installation of brackets into the wall studs beneath the window.

Installing a window sill extender.

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. You can replace your entire window sill to get the space you want or you can simply extend the window sill you already have. 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. Casements and awnings are not compatible with a sill angle or head extender.

Dows before window installation. Measure the distance between the two wall marks then add 1 1 2 inches to factor in your overhang on each side. Step 1 finishing the current window sill. The aluminum sill extender is sized for a 36 wide door narrower units will need to have the extender cut to the same size of the sill.

Use a saw and cut the window sill flush with the wall on either side of the window. Determine your window sill horn overhang. Mark a reference line on the wall on each side of the window. Apply firm pressure to the adapter at the tape location to ensure proper adhesion to the window frame.

If filler is too long trim to the measured length. One piece for the head and one for the sill. A sill extender is shipped with your order to allow height adjustments and is field trimmable. Measure across window from jamb to jamb at the head and sill.

Install filler by snapping leg of filler into. Press the sloped sill adapter onto the sill of the window. To see hands on demonstrations of techni. I typically use for an overhang.

Sill extender is field trimmable for any necessary adjustments. This measurement is your window sill length.