Why Window Sash Repairs Is Harder Than You Think

Window Sash Repairs

Regularly inspect the window sashes for damage, mildew, and mold. If you catch these issues early, you can save money on repairs in the future.

The sash is the internal frame that is vertically moved up or down in windows that open. This article will demonstrate how to carry out a few simple repairs to sash.

Weather Stripping

Wooden window sashes are a great way to add a classic look to your home. They are also sturdy and last for a long time if they are properly maintained. However, they may become damaged or deteriorate as time passes because of exposure to the elements and normal wear and wear and tear. Sash repair experts can restore windows back to their original condition and keep them looking great longer than replacement windows.

The first step to repair sash window damage is to fix weather stripping. It's found on both the sash and frame. If it's damaged or worn out, it can lead to drafts, as well as other issues. Begin by identifying the window brand and the manufacturer's date (etched on the corner of the glass, or the aluminum spacers between panes). Then, take the sash off and mark its height and width to find new weather stripping that matches.

Then, take the sash from its holder, and place it on flat surfaces to allow you to reach all four sides. If the sash is double-hung, you'll have to remove the weights as well as the ropes that go with them that should have fallen into the pocket of the jamb liner. Once you've removed the sash, use a utility knife to cut away the old weather stripping at the corners, and then remove it manually or using a putty blade.

When the sash is clean it is time to replace the parting stops. They are long pieces of wood that separate the two sashes. Pam prefers the standard 1/2-inch by 3/4-inch window trim from the lumberyard. But, you can also use for a scrap piece of lumber.

After removing the parting stop and trimming it to length, apply a thin coat of glazing compound over the bottom of the sash. Smooth out the compound using your putty knife, and then let it dry for a minimum of a day. When the putty is fully cure and dried, you can apply a topcoat of acrylic latex. This will protect the putty, and give your sash an updated appearance.

Sash Hardware

The hardware that holds the window sashes can wear out over time and use. This can result in the window or door that is difficult to open or close. It's a good idea to know that replacing and repair of this hardware is typically straightforward and cost-effective. If a sash becomes difficult to operate, try spraying some lubrication into the jamb channel, and then open it to see if this solves the issue. If the issue continues it's likely the sash balance. It is necessary to remove the window sash to access the hardware.

Ideally, window sashes must swing open and closed with minimal effort however, this can be difficult when the weights are worn or if the sash's meeting rail isn't properly coated. This issue can be due to various reasons such as the lack of maintenance or an unmatched weight rating.

If the hinges on the window begin to move, this can cause the sash drag and then hit the frame at the opposite corner (Photo 1). To fix the problem ensure that the sash is in the proper position within the frame opening and then take it off. If the sash has been screwed to the hinge arm, you'll have to unscrew the hinge arm and replace it (Photo 2). Then, put in the new sash (Photo 3).

window repair to sagging hinges, and a general lack of energy efficiency, windows that are old, especially those in older homes, can be difficult to open or close. Many times it is a matter of making a few minor adjustments that can allow these windows to operate smoothly once more and save homeowners money on energy costs.

To complete these sash repairs it is essential to have all the necessary tools lined up before you begin. Begin by marking the position of the hinge channel on the frame using a pencil (Photo 1). This will assist you in getting the channel back into place correctly when you're finished. Remove the sash and then remove all hardware, including the beads for parting, cords, and chains that hold the sash in place. The nozzle shield of the heat gun and medium setting will soften any hardened putty. Remove the old sash, and keep it in a labeled bag.


Sash Weights

If your window sash repairs are to replace a broken cord or to keep the windows functional, replacing worn out weights for sash will improve its operation and help reduce the energy cost. Sash weights are composed of heavy lead or iron cylindricals that are contained in a concealed cavity and connected by ropes to the movable window sash. These weights provide counterbalance which allows the window to be closed and opened without the use of electrical or mechanical devices. If they fail, sashweights are often left unnoticed or disabled by homeowners.

A weight from a sash that fell out of the cavity is difficult to get back and you'll need to find a replacement that fits correctly. You will also require a fresh piece of string, a length of sashcord and a few sashpulleys to secure the weights you are replacing to the cord.

Older windows made of wood are joined using mortise and tenon joints. The wood pegs that keep the parts together can be removed with pin punches and hammers. The majority of them are large on one side, and smaller on the other. It is essential to first remove the smaller diameter sides. Later sashes used glue instead of pins. They can be cut with a knife and a mallet.

Once the sash is freed then you can take out the sash stop and gain access to the weight pocket. This is usually done through a small hole at the bottom of each jamb. This hole is then covered by an access panel made of wood that can be cut off to allow you to observe the inner workings of the frame.

When the sash has been shut off and the access panel has been removed, you are able to remove the weight you used and replace it. Be sure to weigh the sash first because the weights you have might not be the right size. Once the new weight is installed then tie a string to it and then thread it through the pulley of the sash. Then nail the string to the frame, leaving a few inches of string sticking out from the head for future adjustments.

Sash Cords

In the majority of double-hung windows, a cord or chain is affixed to the weights. This helps keep the sashes within the jamb in a balanced manner. Over time, these chains may become damaged and make it difficult to raise windows. A new sash cable can restore the ability to raise and lower the sash, and keep it in place when opened.

The first step in replacing cords for sash is to locate and remove the access panels in the jambs. They are usually attached by nails or screws and require removal. You may be able to employ a hammer and chisel for removing them but it's best to lay down dust sheets before beginning any work.

After the access panel has been removed, you can start working on the sash. Use a flat bar or chisel to pull the narrow parting beads from their grooves. They are usually wedged in or nailed but can be prised free which is why it's worth your time. If the sash remains in place, pry out the mortise and tenon joints using the help of a hammer and pin or screwdriver, then unhook the wood pegs that are on each piece. You should now be able to move the sash back and forth freely, though it may require lubrication if it feels stiff.

With the sash in an open position Take a measurement of the sash chain to extend from the pulley at the top of the jamb to the sash slot at the bottom. Cut the cord/chain and secure it in Step 6 above. You can use a hammer and screws or nails, however nails are less likely to cause damage.

If you haven't purchased an item that replaces the old counterbalance system it's recommended to keep the original weights for balancing in place. They're not costly and easy to install if purchased them at architectural salvage stores. Depending on the size of your window one or two sash weights may be needed to keep it in an open position.

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Pub: 07 Feb 2024 05:59 UTC
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