Window Sash Repairs 101 The Ultimate Guide For Beginners Window Sash Repairs

Make sure to check the sashes of your windows regularly for signs of damage, mildew and mold. By catching problems before they become serious, you can save money on repairs in the future.


The sash is an interior frame that is able to move vertically up and down in windows that are open. This article will teach you how to perform easy repairs to your sash.

Weather Stripping

Wood window sashes add a classic aesthetic to your home and, when properly maintained, they can last for many years. They can, however, be damaged or degraded over time due to exposure or normal wear. Sash repair experts can restore windows back to their original condition and maintain their appearance much longer than replacement windows.

The first step in repair sash windows is to address weather stripping, which is found on both the sash as well as the frame. If it's loose or worn out, it can lead to drafts and other issues. To fix it, begin by determining your window's brand and the date on which the glass was manufactured (etched in the corner of the glass or on the aluminum spacer between panes). Take the sash off, and mark its width and height so that you can get replacement weather stripping that matches.

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

After the sash has been cleared and clean, you can put in the parting stops. These are long pieces that separate the sashes. Pam prefers to use the standard 1/2-inch by 3/4 inch window trim from the lumberyard. However, you can also substitute for a scrap piece of lumber.

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

Sash Hardware

The hardware that supports windows sashes can become worn out over time and with use. This could result in windows or doors 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 isn't easy to operate try spraying lubrication into the jamb channel and then slide it open to see if that solves the issue. If not, the issue is most likely due to the balance of the sash and you'll have to take off the sash to gain access to the hardware.

Window sashes need to open and close with little effort. However, this may be difficult if the weights are worn out or the sash-to-rail connecting rail isn't glazed. This could be caused by a variety of factors such as a lack of maintenance and an unmatched weight rating.

If the hinge arms of a window are starting to lose their elasticity, this could cause the sash's to drag and eventually hit the frame in the corner that's directly opposite the hinge arm (Photo 1). To correct the issue make sure the sash is aligned in the frame's opening and remove it. If the sash is fixed to the hinge arm, remove the hinge and replace it. (Photo 2). Install the new sash next (Photo 3).

Due to sagging hinges, and a general deficiency in energy efficiency, windows that are old especially in older homes, can be difficult to open or close. Sometimes just a few easy fixes can make these windows operate smoothly again and save homeowners money on energy bills.

To make these sash repairs, it's important to have all the tools needed before you begin. Mark the hinge channel location on the frame (Photo 1) with pencil. This will make it easier to put the channel in the right position after you've finished. Take the sash off, and remove all the hardware, including the parting beads cords, chains, and cords that help to hold the sash. Soften any hardened putty with the help of a heat gun set at medium and fitted with an nozzle shield. Take off the old sash and put it in a bag that is labeled.

Sash Weights

Whether your window sash repairs are to replace a broken cord or to keep the windows functional by replacing worn out weights on sash can improve sash operation and reduce energy consumption. Sash weights consist of iron or lead cylinders that are enclosed in a hidden cavity and are connected via a rope to the movable window sash. window repairs near me provide counterbalance which allows the window to be shut and opened without the need for mechanical or electrical devices. When they fail, sashweights are often ignored or disabled by homeowners.

A sash weight that has fallen out of the cavity is difficult to recover It is therefore important to locate a new one that fits properly. You will also need a new piece of string, a length of sash cord, and a few sash pulleys to connect the new sash weights to the sash cord.

Mortise and Tenon joints are used to join old wood windows. The wood pegs holding the components together can be removed using pin punches and hammers. The majority of these pegs are large on one side and smaller on the other. It is important to remove first the smaller diameter sides. Sashes that were made later in the century made use of glue instead of pegs. They can be separated by cutting the glue line with an instrument, and then tapping the mortised section loose with a mallet.

After the sash is released, you can remove sash stops and gain access to the pockets for weights. This is usually done through tiny holes at the bottom of each jamb. This hole is covered with an unfinished wooden panel that can be removed to reveal the inside workings.

When the sash has been shut off and the access panel is removed, you can take off the weight that was previously installed and replace it. Make sure you weigh the sash prior to you begin, as the old weights may be different sizes than what is needed. After the new weight is in place you can tie a string around it and thread it through the pulley of the sash. Then, attach the string to your boxed frame. Leave a few inches of space at the top of the string to allow for future adjustments.

Sash Cords

Most double-hung windows of the past come with a chain or cord attached to the weights that keeps the sashes in balance within the jamb. Over time, these cords may become damaged and make it difficult to raise the windows. A new sash cable will give you the ability to raise and lower the sash, and ensure it stays in place when it is opened.

To replace sash cords the first step is to remove the access panels from the jambs. They are typically screwed or nailed into and require removal. You might be able to use a hammer and chisel for removing them, but it's always better to lay down dust sheets before commencing 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 partsing beads out of their grooves. It is important to take your time as they're often wedged or nailed in place. If the sash is in place, remove the mortise and the tenon joints by using pin punch and hammer or screwdriver, and then take out the wood pegs on each piece. You should now be able to move the sash around without difficulty, though it will probably need some oil if it feels stiff.

Determine the length of the sash chain or sash cord needed to reach the sash slot on the bottom from the pulley at the top of the jamb. Cut the cord or chain and secure it as in Step 6 above. You can use either nail, hammer or screws. However nails are less likely to cause damage.

Unless you've bought an item that replaces the old counterbalance system, it's best to keep the original balancing weights in place. It's cheap to purchase them from a salvage store and they'll be simple to install once you have the sash unlocked. Depending on the size and shape of your window you may need to use one or two sashweights to keep it open.