Why Window Sash Repairs Isn't As Easy As You Imagine

· 6 min read
Why Window Sash Repairs Isn't As Easy As You Imagine

Window Sash Repairs

Sashes for windows must be inspected regularly for signs of mold, mildew and other damage. You can avoid future repair costs by catching the issues in the early stages, before they become out of control.

The sash is an interior framing that can be moved vertically up or down in windows that open. This article will teach you how to carry out a few simple repairs to sash.

Weather Stripping

Wood window sashes provide a classic aesthetic to your home. If properly maintained, they will last for many years. However, they may become damaged or degrade as time passes because of exposure to the elements and normal wear and tear. Sash repair specialists can restore windows to their original state and maintain their beauty longer than replacement windows.


The first step in sash window repairs is addressing weather stripping, which is found on both the sash and frame. If it's loose or worn out, it could cause drafts and other problems. Begin by identifying the window's brand and the glass manufacturer's date (etched on the glass's corner, or the aluminum spacers between panes). Take the sash off and mark its size and width so that you can get new weather stripping that is compatible with the original.

Then, remove the sash from its holder, and place it on an even surface that allows you to reach all four sides. If the sash is double-hung, take out the ropes and weights that should have fallen into the pocket in the jamb lining. After you've removed the sash using a utility knife, you can use it to remove the old weather stripping at the corners, and then take it off by hand or using a putty knife.

Once the sash has been cleaned, you can replace parting stops. These are long pieces wood that separate the two sashes. Pam prefers the standard 1/2-inch by 3/4-inch window trim from the lumberyard. However, you could also substitute for a scrap piece of lumber.

After removing the stopper for the parting and cutting it to length and then apply a thin layer of glazing compound to 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 and dried, apply a second coat of acrylic latex paint. This will protect the putty, and give your sash an updated look.

Sash Hardware

The hardware that holds window sashes is susceptible to wear and tear due to time and usage, and the result can be a window or door that isn't able to open or close easily. It's good to know that replacing and repair of this hardware is typically simple and inexpensive. If you're having trouble opening a sash spray some grease into the jamb channel. Then, you can slide the sash up and open to see if that fixes the problem. If the issue continues it's likely to be due to the sash's balance. You'll need to remove the window sash in order to access the hardware.

Ideally, window sashes should swing open and closed without effort, however, this can be an issue if the weights become worn or if the sash's meeting rail isn't properly glazed. This issue can be caused by a number of reasons, such as the lack of maintenance or an incorrect weight rating for a particular sash.

If the hinge arms of a window are starting to sag, this can cause the sash to slide and eventually land on the frame in the corner directly opposite the hinge arm (Photo 1). To resolve this problem, first ensure that the sash is squarely inserted into the opening of the frame and then take it out of the window. If the sash is secured to the hinge arm, you'll need to unscrew the hinge arm and replace it (Photo 2). Install the new sash next (Photo 3).

Because of sagging hinges and a general lack of energy efficiency, windows that are old especially in older houses, could be difficult to open and close. Many times, a few simple fixes can make these windows operate smoothly again and help homeowners save money on energy costs.

It is essential to have the tools you require before you begin. Mark the location of the hinge channel on the frame (Photo 1) using pencil. This will make it easier to place the channel in the correct location after you've completed. Remove the sash, and then remove the hardware including the beads that separate (Photo 2) and the chains or cords that secure it. The nozzle shield of the heat gun and medium setting will soften any hardened glue. Remove the old sash and store it in an bag that is labeled.

Sash Weights

No matter if your window sash repair needs are to replace a broken cord or simply to keep the windows functional by replacing worn out sash weights will improve sash operation and reduce energy costs. Sash weights are made of heavy iron or lead cylinders that are enclosed inside a concealed cavity, and attached by a rope to the movable window sash. These weights act as counterbalances and allow you to open and shut the window without the need for mechanical or electrical devices. When they fail, sashweights are usually neglected or not used by homeowners.

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

Older wood windows are joined with mortise and tenon joints. Hammers and pins can be used to remove the wood pegs holding the parts together. Most of these pegs have a large diameter on one side and a smaller size on the other side, so it is important to remove the smaller-diameter sides first. Sashes made later in the century utilized glue instead of pegs and can be separated by cutting the glue line using a knife, then tapping the mortised area loose using a mallet.

After the sash has been removed, you can remove the stopper on the sash and get access to the weight pocket. This is usually done through an opening in the bottom of each jamb. This hole is covered with an unfinished wooden panel that can be removed to reveal the interior 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. Make sure you weigh the sash prior to you do this, since the old weights could be different in size from what you require. After the new weight is installed, thread an appropriate length of string through the pulling mechanism. Then,  window repair near me  to your boxed frame. Leave a few inches at the head of the string for future adjustments.

Sash Cords

In most old double-hung window the chain or cord is connected to the weights. This keeps the sashes within the jamb balanced. Over time these cords can break, making it difficult to raise the window. A new sash cable will restore the ability to move and lower the sash and keep it in position when opened.

To replace sash cords the first step is to remove the access panels from the jambs. They are usually fixed or screwed in and will require to be removed or relocated. It is possible to remove them using an axe or hammer, but it is always best to lay out dust sheets before starting any work.

After removing the access panel, you can begin working on the sash. Utilize a flat bar or chisel to pry the narrow parting beads out of their grooves. It's important to take your time because they are usually stuck or nailed to the floor. If the sash is still in place, break the mortise and tenon joints using pin punch and hammer or screwdriver, then remove the wood pegs that are on each component. You should now be able to move the sash back and forth without difficulty, though it may require oiling if it seems stiff.

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

It is recommended to keep the original weights in place unless you've purchased a kit to replace the counterbalance that was previously installed. It's cheap to purchase them from a salvage store and they'll be easy to install once you have the sash unlocked. Depending on the size of your window, two or three sash weights may be needed to keep it in an open position.