The Reasons Window Sash Repairs Is Harder Than You Imagine

Window Sash Repairs

Window sashes need to be regularly checked for mold, mildew, and damage. You can reduce future repair costs by catching the issues early before they become out of control.

The sash is an interior frame that moves up and down vertically in windows that open. This article will show you how to make several easy repairs to your sash.

Weather Stripping

Wooden window sashes can add an elegant appearance to your home. They are also durable and can last many years if they are properly maintained. However, they may become damaged or degrade as time passes because of exposure to the elements and normal wear and wear and tear. Sash repair specialists can restore windows to their original state and maintain their beauty longer than replacement windows.

The first step for sash window repairs is addressing weather stripping. It's found on both the sash and frame. If it's worn or loose, out, it could cause drafts, as well as other issues. Start by identifying the brand of window and the manufacturer's date (etched on the glass's corner or the aluminum spacers between panes). Take the sash off and mark its width and height so that you can find a replacement weather stripping that matches.

Then, you can remove the sash from the holder and place it on an even surface that allows you to reach all four sides. If the sash is double-hung, you'll have to remove the weights as well as their accompanying ropes that should have fallen into the pocket of the jamb liner. After removing the sash using the utility knife, you can remove the weather stripping from the old sash by hand or using a putty knife.

After the sash has been cleared, you can replace the parting stops. These are long pieces that split the sashes. Pam prefers to use standard 1/2-inch by 3/4-inch window trimming from the lumberyard. But, you can substitute with a scrap piece of wood.

After removing the stopper for the parting and cutting it to length and then apply a thin layer of glazing compound over the bottom of the sash. Smooth the compound using your putty tool, and allow it to dry for at least a day. When it's completely dried, apply a top coat of acrylic latex paint. This will help protect the putty, and give your sash an updated appearance.

Sash Hardware

The hardware that supports the windows sashes can become worn out with time and use. This could result in a door or a window that is difficult to open or close. It's a good idea to know that replacing or fixing this hardware is usually simple and inexpensive. If you're having difficulty opening a sash spray some lubricant into the jamb channel. Then, you can slide the sash up and open to see if this resolves the issue. 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 the hardware.

Ideally, window sashes should be able to open and close with very little effort, but this is difficult if the weights become worn or if the sash's meeting rail isn't properly coated. This issue could be caused by a variety of factors such as an absence of maintenance or an unmatched weight rating.

If the hinge arms on the window begin to move, this can cause the sash drag, and then eventually to hit the frame in the opposite corner (Photo 1). To correct the issue, make sure that the sash is centered in the frame opening, and then remove it. If the sash has been screwed onto the hinge arm, unbolt the hinge and replace it. (Photo 2). Install the new sash (Photo 3).

Old windows, especially those in older homes, may be difficult to close and open due to hinges that are sagging and a general lack of energy efficiency. Sometimes, a few simple fixes can help these windows function smoothly again and save homeowners money on their energy bills.

It is crucial to have the tools you need before you begin. Start by marking the location of the hinge channel on the frame with pencil (Photo 1). This will assist you in getting the channel back in place correctly when you're finished. Remove the sash, and remove all the hardware including the parting beads cords, chains, and cords that help to hold the sash. Heat gun with nozzle shield and a medium setting can soften any hardened putty. Remove the old sash and place it in a bag that is labeled.

Sash Weights

Sash weights can be replaced to improve the performance of your window sash and decrease the cost of energy. Sash weights consist of heavy iron or lead cylinders that are encased in a concealed cavity and connected by ropes to the movable window sash. These weights act as counterbalances, which allows you to open and close the window without the need for mechanical or electrical devices. The sash weights are often ignored or discarded by homeowners, and are turned into scrap when they break; therefore, you may need to find replacements.

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 is suitable for the. You will also require a new piece string, a length of sashcord and a few sashpulleys for tying the new weights to the cord.

Older wood windows are joined by mortise and tenon joints. 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, but smaller on the other. It is important to remove first the smaller diameter sides. Later sashes utilized glue instead of pins. They can be cut with a knife and a mallet.

After the sash is removed then you can take out the sash stop and gain access to the weight pocket. Usually this is accomplished by drilling an opening at the bottom of each jamb. The hole is then 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 has been removed, you can remove the old weight and replace it. First, weigh the sash to ensure that the weights you've got may not be of the right size. After the new weight has been installed, run an appropriate length of string through the pulling mechanism. Then, nail the string to your boxed frame. Leave a few inches of space at the end of the string to allow for future adjustments.

Sash Cords

Most double-hung windows of the past include a chain or cord attached to the weights which keeps the sashes level within the jamb. As time passes, these cords can become damaged and render it impossible to raise the windows. A new sash cord will give you the ability to move the sash upwards and downwards and hold it in place when opened.





The first step to replace sash cords is to find and remove the access panels within the jambs. They are typically screwed or nailed into and need to be removed. You could employ a hammer and chisel to remove them but it's best to lay down dust sheets prior to beginning any work.

After the access panel has been removed, you can begin working on the sash. Utilize a flat bar or chisel to pull the narrow partsing beads out of their grooves. These are often wedged in or nailed, but they can be snipped out, so it's worth taking your time. If the sash is in place, pry out the mortise and tenon joints using the help of a hammer and pin or screwdriver, then remove the wood pegs that are on each piece. You should now be able to move the sash around without difficulty, though it may require oiling if it seems stiff.

With the sash in an open position, 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/chain and fix it using Step 6 above. You can either use a hammer and screws or nails, but nails are less likely to cause damage.

It is recommended to keep the original weights if you've purchased a kit that will replace the counterbalance that was previously installed. They're not costly and are easy to install if purchased them at architectural salvage stores. Depending on the size of your window two or three sash weights could be needed to keep the sash in an open position.