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Window Sash Repairs

Window sashes must be inspected regularly for signs of 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 is able to move up and down vertically in windows that are open. This article will teach you how to do a variety of simple sash repair.

Weather Stripping

Wooden window sashes can add an elegant appearance to your home. They are also durable and can last many years provided they are properly maintained. They may, however, become damaged or degraded with time due to exposure and normal wear. Sash repair experts can restore windows to their original state and maintain their beauty longer than replacement windows.


The first step to sash window repair s is addressing weather stripping, which is found on both the sash as well as the frame. It can cause drafts if damaged or is loose. Begin by identifying the brand of window and the glass manufacturer's date (etched on the glass's corners or the aluminum spacers between panes). Remove the sash, and mark its width and height so that you can find a replacement weather stripping that matches.

Then, remove the sash from its holder and place it on flat surfaces to allow you to reach all four sides. If your sash has been double-hung, take out the weights using their ropes that should be buried within the jamb lining. After removing the sash with the utility knife, remove the weather stripping from the old sash by hand or with a putty knife.

After the sash has been cleaned, you can replace parting stops. These are long pieces that split the sashes. Pam prefers the standard 1/2-inch by 3/4 inch window trimmings from the lumberyard. But, you can also use a scrap piece of wood.

After removing the stoppers for parting and trimming them to the desired length and thickness, apply a thin layer of glazing compound on the bottom of the sash. Smooth it out using your putty knife and let it dry for a minimum of a day. Once the putty has fully cure, you can apply a topcoat of acrylic. This coating will protect the putty and give your sash a new look.

Sash Hardware

The hardware that supports window sashes susceptible to wear and tear due to the wear and tear of use, and the result can be a window or door that can't be opened or closed easily. It's a good idea to know that replacing and repair of this hardware is typically simple and inexpensive. If you are having trouble opening the sash, spray some grease into the jamb channel. Then, slide the sash out to see if it resolves the issue. If the problem persists it's most likely that the sash balance is off. It is necessary remove the window sash to reach this hardware.

Ideally, window sashes should be able to open and close with very little effort, however, this can be a difficult task when the weights are worn or if the sash that joins rail isn't properly glazed. This problem can be due to a variety of factors, including the lack of maintenance or a mismatched weight rating.

If the hinge arms on windows begin to slide, this could cause the sash to drag, and then eventually to hit the frame at the opposite corner (Photo 1). To address this problem, first ensure that the sash is squarely inserted into the opening of the frame and then remove it from the window. If the sash is screwed to the hinge arm, you'll have to remove the hinge arm and replace it (Photo 2). Then, put in the new sash (Photo 3).

Old windows, especially those in older houses, can be difficult to close and open due to sagging hinges and a general inefficiency. Sometimes, a few simple fixes can allow these windows to operate smoothly once more and save homeowners money on their energy bills.

It is essential to have the tools you require before you begin. Mark the hinge channel location on the frame (Photo 1) with a pencil. This will make it easier to position the channel in the right place when you are finished. Remove the sash, and then remove the hardware including the parting beads (Photo 2) and the cords or chains that secure it. The nozzle shield of the heat gun and a medium setting will soften any hardened putty. Remove the old sash, and place it in a bag that is labeled.

Sash Weights

Sash weights can be replaced to enhance the efficiency of your window sash, and also reduce the energy cost. Sash weights consist of heavy lead or iron cylinders that are enclosed in a hidden cavity and connected by a rope to the movable window sash. They are counterbalancers that allows the window to be opened and closed without using mechanical or electrical devices. When they fail, sashweights are usually left unnoticed or disabled by homeowners.

It's not easy to retrieve a sash-weight that has fallen from the cavity, so you'll need to find one that fits properly. You will also require a new piece of string, a length of sash cord, and a few sash pulleys to tie the new sash weights the sash cord.

Older wood windows are joined with mortise and tenon joints. Pin punch and hammer can be used to cut off the wood pegs holding the components together. The majority of them are large on one side and smaller on the other. It is crucial to remove first the smaller diameter sides. Sashes that were made later in the century utilized glue instead of pegs and can be separated by cutting the glue line with an instrument, and then tapping the mortised section loose with a mallet.

Once the sash has been removed, you can take off the sash stops and access the pockets for weights. Usually this is accomplished by drilling a hole near the bottom of each jamb. The hole is surrounded by the wooden panel which can be removed to reveal the inside workings.

After you have the sash stopped and the access panel removed, you will be able to take off the weight from the sash and replace it with the new. First, weigh the sash because the weights you've got may not be of the right size. After the new weight is in place, tie a string to it and then thread it through the pulley of the sash. Then, attach the string to your boxed frame. Leave a few inches at the top of the string for future adjustments.

Sash Cords

Most double-hung windows of the past include a chain or cord attached to the weights that supports and keeps the sashes balanced in the jamb. Over time, these cords can become damaged and make it difficult to raise the windows. A new sash cord will give you the ability to move the sash up and down and keep it in position when it is opened.

The first step in replacing sash cords is to find and remove the access panels within the jambs. They are usually screwed or nailed in and need to be removed. You could use a hammer and chisel to prise them off but it's best to lay down dust sheets prior to beginning any work.

After the access panel has been removed, you can begin working on the sash. Take the narrow beads (also called "tie rails") out of their grooves with a chisel or flat bar. These are often wedged in or nailed, but they can be removed, so it's worth taking your time here. If the sash remains in place, pry out the mortise and tenon joints using pin punch and hammer or screwdriver, and then take out the wood pegs on the components. Continue should be able move freely, however it may require some lubrication in order to feel less stiff.

Take a measurement of the length of sash chain/sash cord needed to reach the sash slot on the bottom, and the pulley on the top of the jamb. Cut the cord or chain and fix it as described in Step 6 above. You can do this with nail, hammer or screws. However, nails are less likely to cause damage.

If you haven't purchased an item that replaces the old counterbalance system it is recommended to keep the original weights for balancing in place. They are not expensive and simple to install if you buy them from salvage shops for architectural use. Depending on the size of your window, one or two sash weights may be needed to keep it open.

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