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Window Sash Repairs

Make sure to check the sashes of your windows regularly for signs of damage, mildew and mold. You can avoid future repair costs by catching the issues in the early stages, before they get out of hand.

The sash is the internal frame that is vertically moved up or down in windows that open. This article will show you how to do a variety of simple repairs to double glazed windows to sash.

Weather Stripping

Wooden window sashes are a great way to add an elegant appearance to your home. They are also sturdy and last for a long time when they are maintained properly. However, they can become damaged or degrade over time due to exposure to the elements and wear and tear. Sash repair experts can restore windows to their original condition and maintain their beauty longer than replacement windows.

Weather stripping is the first thing to address when repairing double glazing windows that have sash. It is located on both the frame and the sash. It can cause drafts if it's worn or loose. To fix it, begin by finding your window brand and glass manufacturer date (etched in the corner of the glass or on the aluminum spacer between panes). Then, take the sash off and mark its height and width so that you can locate the appropriate weather stripping replacement to match.

Then, take it off and place it on a table to allow access to all four sides. If your sash is double glazing repairs-hung, you'll also need to remove the weights as well as their ropes, which should have fallen into the pocket that was intended to be in the jamb liner. After you've removed the sash using a utility knife, you can use it to remove the weather stripping from the corners, then remove it by hand or with a putty knife.

Once the sash is clear, you can replace the parting stops. They are long pieces of wood that separate the two sashes. Pam prefers to use the standard 1/2-inch by 3/4-inch window trimming from the lumberyard. However, you could also use for a scrap piece of lumber.

After removing the parting stops and trimming them to the desired length, apply a thin layer of glazing compound to the bottom of the sash. Smooth the compound using a putty knife, and let it dry at least one day. When it's completely dried and dried, apply a second coat of acrylic latex paint. This coating will protect the putty and give your sash a fresh look.

Sash Hardware

The hardware that supports window sashes is prone to wearing out from age and use, and the result can be a door or window that isn't able to open or close easily. It's good to know that replacing or fixing this hardware is usually easy and affordable. If a sash isn't easy to operate, try spraying some oil into the jamb channel and then open it to see if it solves the issue. If the problem persists, it is most likely the sash balance. You'll need to take off the window 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 issue could be caused by a variety of things, such as the lack of maintenance or a mismatched weight rating for the specific sash.

If the hinge arms of a window are beginning to slide, this could cause the sash to drag and eventually land on the frame in the corner opposite the hinge arm (Photo 1). To fix the problem ensure that the sash is aligned in the frame's opening and remove it. If the sash was fixed to the hinge arm, remove the hinge and replace it. (Photo 2). Then, put in the new sash (Photo 3).

Due to sagging hinges, and a general lack in energy efficiency, older windows, especially those in older houses, could be difficult to open and close. Sometimes, a few simple fixes can allow these windows to operate smoothly again and save homeowners money on energy costs.

It is crucial to have the tools you need 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 correct position after you've finished. Remove the sash and take off the hardware including the parting beads (Photo 2) and the chains or cords that hold it in place. The nozzle shield of the heat gun and medium setting will soften any putty that has been hardened. Remove the old sash, and keep it in a bag with a label.

Sash Weights

Whether your window sash repairs are to replace a broken cord or to keep your windows functioning, replacing worn out sash weights will improve sash operation and help reduce energy costs. Sash weights are heavy, lead or iron cylinders enclosed in a concealed cavity and connected to the movable window sash using rope. These weights act as counterbalances, allowing you to open and shut the window without requiring mechanical or electrical devices. The sash-weights are typically disregarded or disabled by homeowners and then turned into scrap when they fail; therefore, you may need to find replacements.

It's not easy to retrieve the sash-weight that fell from the cavity, so you'll need to find one that fits properly. You will also require a fresh piece of string, a length of sashcord and a few sashpulleys for tying the weights you are replacing to the cord.

Mortise and Tenon joints are used to join windows made of older wood. Pin punch and hammer can be used to remove the wood pegs holding the components together. The majority of these pegs are big on one side, but smaller on the other. It is important to remove first the smaller diameter sides. Sashes made later in the century utilized glue instead of pegs and can be separated by cutting the glue line using an instrument, and then tapping the mortised part loose using a mallet.

After the sash is removed, you can take off the stops on the sash and get access to the pockets for weights. Usually it is done by drilling an opening at the bottom of each jamb. This hole is covered with a wooden panel that can be removed to reveal the inside workings.

Once 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 to ensure that the weights you have might not be the correct size. After the new weight is installed you can tie a string around it and then thread it through the pulley of the sash. Then attach the string to the frame, leaving a few inches of string protruding from the head for future adjustment.

Sash Cords

Most old double-hung windows include a chain or cord attached to the weights which keeps the sashes in balance within the jamb. Over time, these cords could break, making it difficult to raise the window. A new sash cord will restore the ability to move the sash upwards and downwards and keep it in place when opened.

To replace sash cords the first step is to remove the access panels from the jambs. They are typically attached by nails or screws and require removal. It is possible to remove them using the hammer or chisel however, it is best to lay out dust sheets prior to beginning any work.

After the access panel has been removed, you can start working on the sash. Utilize a flat bar, or chisel, to pry the narrow partsing beads out of their grooves. It is essential to be patient because they are usually placed in a wedge or nail. If the sash is still in place, pry the mortise-and-tenon joints out using a hammer or screwdriver and then take out each wood peg. The sash should move freely now, but it may need some lubrication to make it feel less stiff.

Take a measurement of the length of sash cord/chain required to reach the sash slot at the bottom from the pulley at the top of the jamb. Cut the cord/chain, and then fix it using Step 6 above. You can use either nail, hammer or screws. However nails are less likely than screws to cause damage.

If you don't have a kit that replaces the old counterbalance system it's recommended to keep the original weights for balancing in place. They are not expensive and simple to install if you purchase them from salvage shops for architectural use. Based on the size and shape of your window, you might need to install one or two sashweights to keep it open.