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Window Sash Repairs

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

The sash is an internal frame that moves upwards and downwards in windows that open. This article will teach you how to make several simple repairs to sash.

Weather Stripping

Wood window sashes provide an elegant look to your home. When properly maintained, they will last for many years. However, they may become damaged or degrade over time due to exposure to elements and normal wear and tear. Sash repair experts can restore windows to their original condition and keep them looking great longer than replacement windows.

The first step to repair sash windows is to address weather stripping. It's found on both the sash and frame. It can cause drafts if worn out or loose. Start by identifying the brand of window and the glass manufacturer's date (etched on the glass's corners or on the aluminum spacers between panes). Then, take the sash off and mark its width and height so that you can locate the appropriate weather stripping replacement to match.

Then, remove the sash and place it on a table to allow access to all four sides. If your sash has a double-hung, you'll need to remove the weights and their accompanying ropes which should have slipped into the pocket of the jamb liner. After you've removed the sash using a utility knife, you can use it to cut away the weather stripping that was formerly in place at the corners. Then, remove it by hand or using a putty knife.

When the sash is clean, you can replace the parting stops. These are long pieces that divide the sashes. Pam prefers to use the standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. However, you can substitute a scrap piece of wood.

After removing the stopper and cutting it to length, apply a thin coat of glazing compound on the bottom of the sash. Smooth the compound using your putty tool and let it dry for at least one day. After the putty has completely cured, you can apply a topcoat of acrylic. This will protect the putty and give your sash a new look.

Sash Hardware

The hardware that holds the window sashes may wear out with time and use. This can result in the window or door that is difficult to open or close. It's a good idea to know that replacing or repair upvc windows of this hardware is typically straightforward and cost-effective. If you're having difficulty opening a sash spray some oil into the jamb channel. Then slide the sash out to see if it resolves the problem. If not, the issue is likely to be with the balance of the sash and you'll need to take out the sash to access the hardware.

The ideal situation is for window sashes to be able to open and close with very little effort, however, this can be an issue if the weights become worn or if the sash's meeting rail isn't properly coated. This problem could be caused by a variety of factors, including the lack of maintenance or an unmatched weight rating.

If the hinge arms on windows begin to slide, this could cause the sash to drag and then hit the frame at the opposite corner (Photo 1). To fix the problem ensure that the sash is centered in the frame's opening and remove it. If the sash has been fixed to the hinge arm, unbolt the hinge and replace it. (Photo 2). Install the new sash (Photo 3).

Windows that are old, especially in older homes, may be difficult to close and open due to sagging hinges and an overall lack of energy efficiency. In many cases it is a matter of making a few minor adjustments that can make these windows operate smoothly once more and save homeowners money on their energy bills.

To complete these repairs to the sash it is essential to have all of the necessary tools in place before you begin. Mark the hinge channel location on the frame (Photo 1) with pencil. This will help you to place the channel in the proper position after you've finished. Then, remove the sash and take off the hardware including the beads that separate (Photo 2) and the chains or cords that secure it. Soften any putty that has been hardened with an electric heat gun set to medium and equipped with a shield for the nozzle. Remove the old sash, and store it in a labeled bag.

Sash Weights

Whether your window sash repairs are to replace a broken cord or simply to ensure that the windows are functional, replacing worn out sash weights will improve sash operation and reduce energy consumption. Sash weights consist of heavy lead or iron cylinders that are encased inside a concealed cavity, and are connected via ropes to the movable window sash. They function as counterbalances and allow 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 then turned into scrap when they fail. Consequently, you may need to find replacements.

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

Older wood windows are joined by mortise and tenon joints. Hammers and pins can be used to cut off the wood pegs that hold the components together. Most of these pegs have a large diameter on one side and a smaller diameter on the other, so it is essential to remove the smaller-diameter ones first. Sashes that were made later in the century used glue instead of pegs and can be separated by cutting through the glue line with the help of a knife, and then tapping the mortised section loose using a mallet.

Once the sash is freed, you can remove the stopper on the sash and get access to the weight pocket. This is typically done by drilling an opening in the bottom of each jamb. The hole is then covered with an access panel of wood which can be removed to allow you to view the inside of the frame.

After you have the sash stopped and the access panel removed, you'll be able to take off the weight of the old sash and replace it with new. Make sure you weigh the sash before you do this, since the weights that were previously used may be different in size from the one you need. After the new weight has been installed, you can thread an appropriate length of string through the pulling mechanism. Then nail the string to the boxed frame, but leave a few inches of string sticking out from the head to allow for future adjustments.

Sash Cords

The majority of double-hung windows with a history include a chain or cord connected to the weights that keeps the sashes level in the jamb. Over time, these chains can become damaged and make it difficult to raise windows. A new sash cable can restore the ability to raise and lower the sash and keep it in place when it is opened.

To replace sash cords, the first step is to remove the access panels from the jambs. These are usually nailed or screwed in and must be removed or relocated. It may be possible to remove them with an axe or hammer, however, it is best to lay out dust sheets prior to starting any work.

Once the access panel is removed, you can begin working on the sash. Use a flat bar or chisel to pry the narrow partsing beads out of their grooves. It is essential to be patient, as these are often stuck or nailed to the floor. If the sash remains in place, break the mortise-and-tenon joints out using a hammer or screwdriver and then remove each wood peg. The sash should be able to move around freely now, however it may require some lubrication to make it feel less stiff.

Take a measurement of the length of sash cord/chain required to reach the sash slot at the bottom of the pulley located at the top of the jamb. Cut the chain or cord and fix it as described in the previous step. You can use nail, hammer or screws. However nails are less likely than screws to cause damage.

If you don't have a kit that replaces the old counterbalance system, it is recommended to keep the original balancing weights in place. It's not expensive to buy them from a salvage store and they will be easy to install once you have the sash open. Based on the size of your window, Window Sash Repairs one or two sash weights might be required to keep it in an open position.