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Window Sash Repairs

Window sashes need to be regularly checked for mold, mildew and damage. If you catch these issues early, you can save money on future repairs.

The sash is an internal frame that can move vertically up and down in windows that open. This article will show you how to make several simple sash repairs.

Weather Stripping

Wood window sashes provide the classic look to your home. When properly maintained, they can last for a long time. They can, however, become damaged or degraded with time due to exposure and normal wear and tear. Fortunately, sash repair specialists can restore your windows back to their original condition and keep them looking fantastic for longer than replacement windows.

Weather stripping is the primary issue to take care of when fixing sash windows. It's on both the frame and sash. If it's loose or worn out, it can cause drafts and other problems. To fix it, begin by determining the brand of your window and glass manufacturer date (etched in the corner of the glass or on the aluminum spacer between panes). Then, take the sash off and mark its height and width so that you can locate the appropriate weather stripping replacement to match.

Then, remove the sash and place it on a work surface so you can access all four sides. If the sash is double glazing near me-hung, you'll have to take off the weights and their ropes, which should have fallen into the intended pocket in the jamb liner. Once you've taken the sash off and the weights, use a utility knife to remove the weather stripping from the corners. Then, remove it by hand or with a putty knife.

After the sash has been cleared it is time to 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 trim from the lumberyard. But, you can also substitute a scrap piece of wood.

After removing the parting stop and cutting it to length after which, apply a thin layer of glazing compound over the bottom of the sash. Smooth out the compound using your putty knife and let it dry for a minimum of a day. When it's completely dried, apply a top coat of acrylic latex paint. This coating will protect the putty and give your sash a fresh look.

Sash Hardware

The hardware that supports the window sashes can wear out with time and use. This could result in the window or door that is difficult to open or close. It's important to know that replacing or fixing this hardware is usually straightforward and cost-effective. If you're having trouble opening the sash, spray some oil into the jamb channel. Then, slide the sash up and open to see if that fixes the problem. If the issue continues, it is most likely that the sash balance is off. You will need to remove the window sash in order to reach this hardware.

The ideal situation is for window sashes to move open and shut with very little effort, but this is a difficult task if the weights become worn or if the sash that joins rail isn't properly coated. This issue can be due to many factors, including an absence of maintenance or an unmatched weight rating.

If the hinges on a window begin to sag this could cause the sash to drag and then hit the frame in the opposite corner (Photo 1). To remedy the issue, make sure that the sash is aligned in the frame's opening and take it off. If the sash is attached to the hinge arm, unbolt the hinge and replace it. (Photo 2). Then, you can install the new sash (Photo 3).

Old windows, particularly those in older homes, can be difficult to close and open because of sagging hinges and an overall inefficiency. In many instances, a few minor repairs can turn these windows into smooth operation again and save the homeowner money on energy costs.

It is essential to have the tools you need before you start. Mark the hinge channel's location on the frame (Photo 1) using a pencil. This will make it easier to put the channel in the right location after you've completed. Remove the sash and then remove all hardware, including the beads for parting cords, chains, and cords that help to hold the sash. Soften any hardened putty using an electric heat gun set to medium and fitted with a shield for the nozzle. Take off the old sash and put it in a bag with a label.

Sash Weights

Sash weights can be changed to improve the performance of your window sash, and also reduce the cost of energy. Sash weights are heavy, lead or iron cylinders enclosed in a hidden cavity and connected to the movable window sash using a rope. These weights function as counterbalances, allowing you to open and shut the window without the need for mechanical or electrical devices. When they fail, sashweights tend to be ignored or disabled by homeowners.

It's difficult to retrieve a sash-weight that has fallen from the cavity, so you'll need to find one that fits correctly. You will also need an additional piece of string, a length sash cord, and a few sash pulleys to connect the new sash weights the sash cord.

Older wood windows are joined using mortise and tenon joints. Pin punch and hammer can be used to take out the wood pegs that hold the parts together. The majority of these pegs have a large diameter on one side and a smaller size on the other, which is why it is important 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 the glue line using a knife, then tapping the mortised section loose using a mallet.

Once the sash is freed then you can take out the sash stop and gain access to the weight pocket. This is usually done via tiny holes in the bottom of each jamb. The hole is then covered with a wooden access panel that can be cut off to let you see the inner workings of the frame.

When the sash has been shut off and the access panel has been removed, you can take off the weight that was previously installed and replace it. Make sure you weigh the sash prior to you do this, since the weights that were previously used may be a different size than what you require. After the new weight has been installed, double run a string through the sash pulling mechanism. Then, you can nail the string to the boxed frame, but only leave a few inches of string hanging from the head to allow for future adjustments.

Sash Cords

Most old double-hung windows include a chain or cord attached to the weights that helps keep the sashes balanced within the jamb. As time passes, these cords can get damaged and make it impossible to raise the windows. A new sash cable will give you the ability to move and lower the sash and keep it in place when opened.

The first step in replacing sash cords is to find and remove the access panels in the jambs. They are usually screwed or nailed in and require removal. It may be possible to remove them with a hammer or chisel, however, it is best to lay out dust sheets prior to starting any work.

After the access panel has been removed, you can start working on the sash. Make the small parting beads (also known as "tie rails") out of their grooves with a chisel or flat bar. They are typically wedged into or nailed but can be prised free which is why it's worth your time here. If the sash remains in place, pry the mortise-and tenon joints using a hammer or screwdriver, then remove each wood peg. The sash should be able to move around freely now, however it may need some lubrication to make it feel less stiff.

Determine the length of sash chain/sash cord needed to reach the sash slot at the bottom of the pulley at the top of the jamb. Cut the cord/chain, and then secure it in Step 6 above. You can use a hammer, nails, or screws. However, nails are less likely than screws to cause damage.

It is recommended to keep the original weights in place unless you've purchased a kit that will replace the counterbalance that was previously installed. They are not expensive and are easy to install if you purchase them from architectural salvage stores. Based on the size of your window two or three sash weights might be required to keep it open.