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Window Sash Repairs

Window sashes need to be checked regularly for mold, mildew and other damage. By catching problems before they become serious you will save money on repairs in the future.

The sash is an internal frame that can move up and down vertically in windows that are open. This article will teach you how to perform several simple repairs to sash.

Weather Stripping

Wood window sashes add the classic look to your home. When properly maintained, can last for a long time. However, they can be damaged or degrade as time passes due to exposure to elements and normal wear and wear and tear. However, sash repair experts can bring your windows back to their original condition and maintain their appearance for a longer period of time than replacement windows.

Weather stripping is the first thing to address when repairing sash windows. It is located on both the frame and the sash. If it's damaged or worn out, it can cause drafts and other problems. Begin by identifying the window's brand and the glass manufacturer's date (etched on the corner of the glass or the aluminum spacers between panes). Then, remove the sash and mark its width and height to find the appropriate weather stripping replacement to match.

Then, remove the sash and set it on a work surface so that you can reach all four sides. If your sash has a double-hung, you'll also need to take off the weights and their ropes which should have slipped into the pocket of the jamb liner. After removing the sash using the utility knife, remove the old weather stripping by hand or with the putty blade.

After the sash has been cleared it is time to replace the parting stops. These are long pieces wood that separate the two sashes. Pam likes to replace them with standard 1/2-inch-by - 3/4-inch window trim from the lumberyard, but you could also use a piece of scrap wood.

After removing the stoppers for parting and cutting them to the desired length, apply a thin layer of glazing compound on the bottom of the sash. Smooth it out using your putty knife, and then let it dry for at least a day. After the putty has completely dried, you can apply a topcoat of acrylic. This coating will protect the putty and give your sash a fresh appearance.

Sash Hardware

The hardware that holds window sashes is susceptible to wear and tear from time and usage, and the result can be a door or window that can't be opened or closed easily. It's good to know that replacing and fixing this hardware is usually straightforward and cost-effective. If a sash is difficult to operate, try spraying some lubrication into the jamb channel and then open it to see if that solves the issue. If not, the problem is most likely due to the sash balance, and you'll need to remove the sash to access the hardware.

Ideally, window sashes must swing open and closed with very little effort, but this can be a difficult task when the weights wear out or if the sash that joins rail isn't properly glazed. This could be caused by various reasons, including a lack of maintenance and an unmatched weight rating.

If the hinges on a window begin to sag this can cause the sash drag, and then eventually to hit the frame in the opposite corner (Photo 1). To address this issue, first make sure the sash is firmly seated in the opening of the frame and then remove it from the window. If the sash has been screwed to the hinge arm, you'll need to remove the hinge arm and replace it (Photo 2). Install the new sash next (Photo 3).

Old windows, especially those in older houses, can be difficult to close and open due to hinges that are sagging and a general lack of energy efficiency. In most cases, a few simple repairs can transform these windows into smooth operators for the first time and save the homeowner money on energy bills.

It is important to have the tools you require before you begin. Begin by marking the location of the hinge channel on the frame using pencil (Photo 1). This will assist you in getting the channel back into place correctly when you're finished. Take the sash off, and remove all the hardware, including the beads for parting cords, chains, and cords that hold the sash in place. Heat gun with nozzle shield and a medium setting will soften any putty that has been hardened. Take off the old sash and store it in an labelled bag.

Sash Weights

If your window repair sash repairs are to replace a damaged cord or just to keep your windows functioning and functional, replacing worn-out weights for sash will improve its operation and cut down on energy consumption. Sash weights are made of heavy iron or lead cylindricals that are contained in a hidden cavity and attached by ropes to the movable window sash. They function as counterbalances, allowing you to open and close the window without having to use mechanical or electrical devices. The sash weights are usually neglected or ignored by homeowners and turned into scrap when they fail. Consequently you might need to locate replacements.

It's not easy to retrieve an sash-weight which has fallen from the cavity, so you'll want to find one that fits properly. You will also require a fresh piece of string, a length of sashcord and some sashpulleys to tie the weights you are replacing to the cord.

Mortise and Tenon joints are used to join windows made of older wood. The wood pegs that keep the parts together can be removed with pin punches and hammers. Most of these pegs have a large diameter on one side and a smaller one on the other, which is why it is essential to remove the small-diameter sides first. Sashes that were made later in the century used glue instead of pegs and can be separated by cutting the glue line using a knife, then tapping the mortised part loose using mallets.

After the sash has been removed, you can remove the stopper on the sash and get access to the weight pocket. Usually, this is done through a hole near the bottom of each jamb. The hole is then covered with the wooden panel which can be removed to reveal the inner workings.

After the sash has been stopped and the access panel removed, you will be able to remove the weight of the old sash and replace it with new. Make sure you weigh the sash before you do this, since the old weights may be a different size than what is needed. After the new weight has been installed, run the string through the sash pulling mechanism. Then, attach the string to the boxed frame. Leave a few inches of space at the end of the string to allow for future adjustments.

Sash Cords

Most old double-hung windows come with a chain or cord attached to the weights that helps keep the sashes in balance in the jamb. As time passes, these cords may break, making it difficult to raise the window. A new sash cord can restore the ability to move the sash upwards and downwards and hold it in place when opened.

The first step to replace sash cords is to find and take out the access panels located in the jambs. They are typically screwed or nailed into and need to be removed. You might be able to employ a hammer and chisel for removing them but it's best to lay down dust sheets prior to commencing any work.

After the access panel has been removed, you can start working on the sash. Make the small parting beads (also called "tie rails") out of their grooves with flat bar or chisel. It is essential to take your time because they are usually placed in a wedge or nail. If the sash remains in place, pull the mortise-and-tenon joints out with a hammer or screwdriver and then take out each wood peg. It should now be possible to move the sash back and forth without difficulty, though it will probably need some lubrication if it feels stiff.

Take a measurement of the length of sash chain/sash cord required to reach the sash slot at the bottom from the pulley on the top of the jamb. Cut the chain or cord and secure it as in the previous step. You can either use a hammer and screws or nails, but nails are less likely to cause damage.

If you don't have an upgrade kit to replace the old counterbalance system, it's best to keep the original weights for balancing in place. They are not expensive and simple to install if purchased them at architectural salvage stores. Based on the size of your window, one or two sash weights could be needed to keep the sash in an open position.