Installing A Window Sill Extender

If filler is too long trim to the measured length.

Installing a window sill extender.

Sill extender is field trimmable for any necessary adjustments. Measure across window from jamb to jamb at the head and sill. 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.

Apply firm pressure to the adapter at the tape location to ensure proper adhesion to the window frame. To see hands on demonstrations of techni. 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. Dows before window installation.

A sill extender is shipped with your order to allow height adjustments and is field trimmable. You can replace your entire window sill to get the space you want or you can simply extend the window sill you already have. 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.

Press the sloped sill adapter onto the sill of the window. One piece for the head and one for the sill. Casements and awnings are not compatible with a sill angle or head extender. 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.

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. I typically use for an overhang. This measurement is your window sill length. A permanent extender requires the installation of brackets into the wall studs beneath the window.

Determine your window sill horn overhang. Check this dimension against the shorter pieces of frame pocket filler.