A casement liner is a strip that is placed on the inside of a window frame to provide a snug fit for the window.
A casement liner is a strip that is placed on the inside of a window frame to provide a snug fit for the window. Jamb liners can be built into a window frame or added or replaced later. Many hardware stores sell jamb liners that are designed for different sizes and types of windows, and each is used and installed slightly differently. It is also possible to order coatings directly from window manufacturers.
Jambs are the part of the window frame that runs vertically. Jambs often have hardware associated with opening and closing the window, including rails for sliding windows, latches, and hinges. Window liners sit on the inside of the window and are often used to house hardware such as springs and weights used to keep windows open and balanced. In fact, frame liner replacement can be used as a quick way to fit a different style of window, with the liner housing all the hardware so the window can be fitted quickly and easily.
Vinyl and aluminum are commonly used in the manufacture of jamb liners. These materials are strong and very durable, as well as being easy to install. It is possible to find jamb liners made from wood and other materials, but they can be expensive and a bit difficult to fit to the window. For specialty windows, it may be necessary to order a custom jamb cladding product that has been installed on the window; these products can be made by window fabricators and some contractors.
When aging homes to reduce heating and cooling costs, jamb liners can be used as a quick and inexpensive way to seal cracks in windows. They can be installed very easily and will reduce air infiltration around the window. When combined with a double-glazed or other efficient window type, jamb liners can make a significant difference to the energy needs of the structure.
Before purchasing replacement jambs, it is wise to measure a window carefully and take note of any unusual features to ensure the correct size and style sill is purchased. Most hardware stores have lenient return policies so people can easily replace a purchase if they buy the wrong thing, but it’s best to avoid a trip back to the hardware store to buy the correct jamb liner if possible.
