Flush Fin Window Siding

In the fiberglass impervia details what appears to be a flush fin is a replacement window.

Flush fin window siding.

A flush fin window is designed to fit flush on top of the old window frame and when properly installed with a liberal bead of sealant between new and old frames you get a solid water tight seal. A vinyl window used for retrofit installation into an existing window frame. First order of business was making sure that any nails in the old nail fin were out of the way because we planned to remove the entire nail fin once the siding was cut out of the way we just bent them down to the sit flush with the window frame with a hammer. Cutting away the siding will require that the replaced windows will have a 1 5 to 2 cedar trim moulding around the edges of the window impacting the aesthetics somewhat i guess.

The fin covers the old window frame no need to cut back stucco or siding refinish interior trim or replace blinds and window coverings. From the outside the siding butts right against the windows. The new window or door with nail fin is sealed and attached to the wall in the opening left by the removal of the existing brckmould and window or door. Innie vs outie will be determined by the window construction and sash location.

Our flush fin option allows our windows to be installed from the exterior of a home into an existing window frame. No need to cut back stucco or siding refinish interior trim or replace blinds and window coverings. The siding is cedar and there is currently no trim around the windows. Full frame replacement after brickmould or trim removal or siding cut back for nail fin windows the existing window or door and wood brickmould or trim is removed.

This provides a clean energy efficient result. The nail fin location depends primarily on the cladding thickness and the op will be using shingles and stucco so it could be 1 to 1 5 16 which is typical. The fin covers the old window frame. Flush fin also called z bar typically used in california and other markets where aluminum windows are in place and the exterior is stucco or masonry.

These windows have a large exterior flange that is designed to conceal the existing window s frame. Flush fin recommended for replacement this frame type allows our windows to be installed from the exterior into an existing aluminum window frame. Flush fin allows our windows to be installed from the exterior of a home into an existing window frame.