Flush fin (also known as Z-Bar) frames are designed to replace aluminum frame windows while preventing damage to stucco and interior dry wall. It consists of a vinyl fin that surrounds the perimeter of the window frame and is flush with the exterior frame of the existing window.
Nailing fins, sometimes called mounting flanges, are the thin strips installed on the exterior sides of a window. Unlike a “front flange” which is a decorative trim piece, a nailing fin is usually set back from the outer edge of the window frame and has fastener holes punched into it.
A block frame window uses no added nail fin, brick mold, or flush flange. Therefore, installers fasten the window through the frame into the rough opening. Specialty screws, plates, or clips attached the window frame to the rough opening.
Replacement windows are simple enough for many homeowners to install themselves. They come with a large flange on the exterior part of the window, called a z-bar. This z-bar covers the old window visually and seals the new window to the stucco or wood surrounding the old window.
- Use either an exterior grade nail (roofing nail) or an exterior grade screw to secure the window. Make sure the nail/screw securely fits into the framing of the wall. Do not place a nail/screw within 6” of each corner. Nails/screws should be set no more than 12” apart.
Windows Without Nailing Flange are fastened from the inside of the structure using the existing window frame and there is typically no need to remove or replace existing trim and siding. These are an easy and cost-effective way to upgrade your windows.
Flush-mount windows lay smooth with the building, and trim is installed on top of the window flange. On the j-lap, or j-channel mount, the glass protrudes slightly because three is a channel built onto the window to allow siding or trim board to slide in.
Florida Flange is a large exterior fin, used on windows in concrete applications with block openings. The Florida Flange is attached to the wooden framework or buck, and sealed to the masonry wall. This is done to conceal the existing frame and to give a clean finished look.
A retrofit window installation describes inserting a brand new window sash into an existing window frame. Also referred to as 'inserts' or 'pocket installations', this installation type is typically reserved for window frames that are still in great condition.
Flush Fin (also called Z-bar or stucco flange)
Replacement windows (also referred to as retrofit windows) involves taking a new window and placing it into and older frame. The process is quick and easy to install and can be completed without stucco, drywall or paint damage.
A: Retrofit windows are installed into existing window frames. New-construction windows are secured to the frame of the house by nailing flanges. The cost difference is related to removal and repair of existing window trim and siding.
Can New Construction Windows Be Used for Replacement? New construction windows can be used for replacement window projects in two ways. Remember, the only difference between a new construction window and a replacement window is the nail fin.
In many cases, windows can be installed at least partially from the outside. However, every home is unique, and there may be some features of your home's window openings that require all or part of the replacement window installation process to occur inside.
Window flashing is a thin continuous piece of material that is installed to prevent water from getting into a structure from an angle or joint near windows. It is key to preventing water intrusion. Window flashing is arranged in a manner that directs water down and away from the structure.
What is Flashing Tape? By definition, flashing tapes are thin continuous impervious materials that prevent water and air infiltration within the building envelope.
Once the window functions properly, nail off the rest of the top and side flanges every 4 in. to 6 in. Eliminate drafts with spray foam. Instead of stuffing fiberglass insulation around the window, apply low-expanding spray foam for the best air seal.
Vinyl windows for "new construction" can usually have the nail fin cut off with a knife or saw. Then you install the window using the replacement or upgrade instructions. Usually consisting of screws in the sides, insulation and shims.