This Is A Guide To Window Sash Repairs In 2023 Window Sash Repairs

Sashes for windows must be checked regularly for mold, mildew and damage. If you catch these issues early you will save money on future repairs.

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

Weather Stripping

Wooden window sashes can add an elegant appearance to your home. They are also sturdy and can last many years when they are maintained properly. However, they can be damaged or degraded in time due to exposure to elements and normal wear and tear. Sash repair experts can restore windows to their original condition and maintain their beauty much longer than replacement windows.

The first step in repair sash window damage is to fix weather stripping. It's found on both the sash as well as the frame. If it's worn or loose, out, it can lead to drafts and other problems. 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 purchase replacement weather stripping that matches.

Next, remove the sash and place it on a surface to allow access to all four sides. If your sash has a double-hung, you'll have to take off the weights and the ropes that go with them that should have fallen into the pocket that was intended to be in the jamb liner. After removing the sash with the utility knife, you can remove the weather stripping that was left by hand or using a putty blade.

After the sash is cleared, you can install the stoppers that separate the two sashes. These are long pieces wood that separate the two sashes. Pam prefers the standard 1/2-inch by 3/4 inch window trimming from the lumberyard. But, you can also substitute with a scrap piece of wood.

After removing the stopper and cutting it to length after which, apply a thin layer of glazing compound over the bottom of the sash. Smooth it out using your putty knife, and then let it dry for a minimum of a day. After it has fully dried then apply a top coat of acrylic latex paint. This will protect the putty and give your sash a new look.

Sash Hardware

The hardware that holds the windows sashes can become worn out over time and use. This can result in a door or a window that is difficult to open or close. It's good to know that replacing or repairing this hardware is often simple and inexpensive. If a sash is difficult to operate, try spraying some grease into the jamb channel and then open it to see if that fixes the problem. If not, the issue is most likely due to the balance of the sash and you'll need to remove the sash to gain access to this hardware.

Window sashes need to open and close without much effort. However, this can be a challenge if the weights have been worn out or the sash connecting rail isn't covered with. This issue can be caused by a number of reasons, such as insufficient maintenance or the wrong weight rating for a particular sash.

If the hinge arms on the window begin to move, this could cause the sash to drag and eventually hit against the frame at the opposite corner (Photo 1). To address this issue, first make sure the sash is firmly seated in the frame's opening and then take it out of the window. If the sash is screwed onto the hinge arm, unbolt the hinge and replace it. (Photo 2). Install the new sash next (Photo 3).

Because of sagging hinges and a general deficiency in energy efficiency, older windows especially in older homes, can be difficult to open or close. In many instances, a few easy repairs can turn these windows into smooth operators and save homeowners cash on energy costs.

To complete these repairs to sash it is important to have all of the necessary tools lined up before you begin. Start by marking window repair of the hinge channel on the frame using pencil (Photo 1). This will make it easier to put the channel in the proper location after you've completed. Take the sash off, and remove all the hardware, including the beads for parting cords, chains, and cords that hold the sash in place. A hot gun with nozzle shield and a medium setting will soften any hardened glue. Remove the old sash and place it in a labelled bag.

Sash Weights

Sash weights can be replaced to enhance the efficiency of your window sash, and also reduce energy costs. Sash weights are heavy, lead or iron cylinders, which are enclosed inside a hidden compartment and linked to the moveable window sash using rope. These weights provide counterbalance, allowing the window to be shut and opened without using mechanical or electrical devices. The sash-weights are typically disregarded or disabled by homeowners and then turned into scrap when they break; therefore you may have to locate replacements.

A weight in a sash that has fallen out of the cavity is difficult to get back and you'll need to locate a new one that fits correctly. You will also require a new piece of string, a length of sashcord and some sashpulleys to tie the new weights to the cord.


Mortise and Tenon joints can be used to join windows made of older wood. Pin punch and hammer can be used to remove the wood pegs that hold the components together. The majority of them are large on one side, and smaller on the other. It is important to first remove the smaller diameter sides. Later sashes made use of glue instead of pins. They can be separated with a knife and mallet.

After the sash has been removed, you can remove the sash stop and gain access to the weight pocket. This is typically done by drilling tiny holes at the bottom of every jamb. The hole is then covered with a wooden panel that can be removed to reveal the inner workings.

After the sash has been stopped and the access panel removed, you'll be able to take off the weight of the old sash and replace it with new. Be sure to weigh the sash prior to you begin, as the weights that were previously used may be different sizes than what is needed. Once the new weight has been installed, thread an appropriate length of string through the pulling mechanism. Then, you can attach the string to your boxed frame. Leave a few inches at the top of the string for future adjustments.

Sash Cords

In most old double-hung window, a cord or chain is attached to the weights. This helps keep the sashes in the jamb in a balanced manner. Over time, these cords could break, making it impossible to raise the window. A new sash cable will give you the ability to move and lower the sash and keep it in place when it is opened.

The first step in replacing sash cords is to locate and take out the access panels located in the jambs. They are typically screwed or nailed into and must be removed. It is possible to take them out using the hammer or chisel but it is always 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 pull the narrow parting beads from their grooves. It's important to be patient, as these are often stuck or nailed to the floor. If the sash remains in place, pry the mortise and tenon joints free using a hammer or screwdriver and then take out each wood peg. You should now be able to move the sash back and forth without difficulty, though it will probably need some lubrication if it feels stiff.

With the sash open, measure enough sash cord/chain to extend from the pulley at the top of the jamb to the sash slot in the bottom. Cut the cord or chain and fix it using the step 6 above. You can either employ a hammer, screws or nails, however nails are less likely to cause damage.

If you don't have an item that replaces the old counterbalance system, it is recommended to keep the original balancing weights in place. It's not expensive to buy these from salvage shops for architectural purposes and they'll be simple to install once you have the sash open. Based on the size and shape of your window, you might need to install one or two sashweights to keep the sash open.