Five Window Sash Repairs Lessons From Professionals

· 6 min read
Five Window Sash Repairs Lessons From Professionals

Window Sash Repairs

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

The sash is an inside frame that can move vertically up and down in windows that 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 will last for many years provided they are properly maintained. However, they can be damaged or degraded as time passes due to exposure to elements and wear and tear. Sash repair specialists can restore windows to their original state 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 and frame. It can cause drafts if it's damaged or is loose. Begin by identifying the window's brand and the manufacturer's date (etched on the glass's corner or the aluminum spacers between panes). Then, remove the sash and mark its width and height so that you can locate the appropriate weather stripping replacement to match.

Then, you can remove the sash from its holder and place it on an even surface that allows you to see all four sides. If your sash has a double-hung, you'll also need to remove the weights as well as the ropes that go with them which should have slipped into the intended pocket in the jamb liner. After you have removed the sash using the utility knife, remove the old weather stripping by hand or using a putty knife.

After the sash has been cleared it is time to replace the parting stops. These are long pieces wood that divide the two sashes. Pam likes to replace these with standard 1/2-inch-by 3/4-inch window trim from the lumberyard, however you could also use a piece of scrap wood.

After removing the stopper and trimming it to length and then apply a thin layer of glazing compound on the bottom of the sash. Smooth it out using your putty knife, and then let it dry for at least a day. When it's completely dried then apply a top coat of acrylic latex paint. This will protect the putty and give your sash a fresh appearance.

Sash Hardware

The hardware that supports window sashes prone to wearing out from age and use and the result could be a door or window that won't open or close easily. The good news is that fixing and replacing this hardware is generally quite simple and inexpensive. If you are having trouble opening a sash, spray some grease into the jamb channel. Then slide the sash open to see if it resolves the issue. If not, the problem is likely to be with the balance of the sash and you'll need to remove the sash in order to access this hardware.

Ideally, window sashes must move open and shut with minimal effort however, this can be difficult when the weights wear out or if the sash meeting rail isn't properly coated. This issue can be due to a variety of factors such as an absence of maintenance or an unmatched weight rating.

If the hinge arms of a window begin to lose their elasticity, this could cause the sash's to drag and eventually land on the frame in the corner that's directly opposite the hinge arm (Photo 1). To remedy the issue make sure the sash is in the proper position within the frame's opening and remove it. If the sash is screwed to the hinge arm, you'll need to loosen the hinge arm and replace it (Photo 2). Then, you can install the new sash (Photo 3).

Because of sagging hinges and a general lack in energy efficiency, older windows especially in older homes, may be difficult to open or close. Many times, a few simple fixes can make these windows operate smoothly once more and save homeowners money on energy costs.

It is important to have the tools you require before you start. Start by marking the location of the hinge channel on the frame with a pencil (Photo 1). This will allow you to place the channel in the correct location after you've completed. Then, remove the sash and remove the hardware, including the parting beads (Photo 2) and the cords or chains which hold it in place. Heat gun with nozzle shield and medium setting will soften any putty that has been hardened. Remove the old sash and store it in an bag that is labeled.

Sash Weights

Sash weights are able to be replaced to enhance the efficiency of your window sash and reduce energy costs. Sash weights are heavy lead or iron cylinders enclosed inside a hidden compartment and attached to the movable sash by a rope. These weights provide counterbalance that allows the window to be opened and closed without the use of electrical or mechanical devices. When they fail, sashweights are usually ignored or disabled by homeowners.

It is difficult to recover a sash-weight that has fallen from the cavity, so you'll want to find one that fits correctly. You will also require a new piece string, a length sashcord and a few sashpulleys to secure the weights you are replacing to the cord.

Older windows made of wood are joined by mortise and tenon joints. The wood pegs that hold the components together can be removed by the use of a pin punch and hammer. The majority of them have large diameters on one side and a smaller diameter on the other, which is why it is crucial to take out the small-diameter sides first. Later sashes utilized glue instead of pins. They can be cut with a knife and mallet.

After the sash is released, you can remove the sash stops and access the pockets for weights. Usually this is accomplished by drilling an opening at the bottom of each jamb. This hole is then covered by an access panel of wood that can be ripped off so that you can see the inner workings of the frame.

After the sash has been stopped and the access panel removed, you will be able to remove the old sash weight and replace it with new. First, weigh the sash because the weights you have may not be the correct size. After the new weight is in place, tie a string to it and thread it through the pulley for the sash. Then, you can attach the string to the boxed frame. Leave a few inches of space at the top of the string for future adjustments.

Sash Cords

In the majority of double-hung windows, a cord or chain is attached to the weights. This supports and keeps the sashes within the jamb in a balanced manner. As time passes, these cords can become damaged and make it difficult to raise the windows. A new sash cable can restore the ability to move and lower the sash and keep it in position when opened.

The first step to replace sash cords is to find and remove the access panels within the jambs. They are typically fixed or screwed in and must be removed or relocated. You may be able to use a hammer or chisel to prise them off, but it's always better to lay down dust sheets prior to commencing any work.

After  window repairs near me  has been removed, you can begin working on the sash. Utilize a flat bar or chisel to pull the narrow parting beads out of their grooves. It is essential to be patient because they are usually wedged or nailed in place. If the sash remains in place, break the mortise and tenon joints with a hammer and pin punch or screwdriver, then remove the wood pegs on the components. The sash should move around freely now, however it might require some lubrication in order to feel less stiff.

Measure the length of sash cord/chain required to reach the sash slot on the bottom from the pulley on the top of the jamb. Cut the chain or cord and fix it as described in Step 6 above. You can use a hammer, nails, or screws. 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. They're not expensive and simple to install if you purchase them at architectural salvage stores. Depending on the dimensions and shape of your window you may require one or two sashweights to keep the sash open.