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Window Sash Repairs

Sashes for windows must be checked regularly for mold, mildew and other damage. You can reduce future repair costs by catching the issues early on, before they become too much.

The sash is the interior framing that moves vertically upwards or downwards in windows that are open. This article will show you how to perform simple sash repairs.

Weather Stripping

Wood window sashes give the classic look to your home and, when properly maintained, can last for a long time. However, they can become damaged or degraded with time due to exposure and normal wear and tear. Thankfully, sash repair double glazing windows experts can bring your windows back to their original condition and maintain their appearance for longer than replacement windows.

The first step in sash window repairs is addressing weather stripping, which can be found on both the sash and frame. It can cause drafts if it's worn out or loose. 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). Take the sash off and mark its size and width so that you can purchase new weather stripping that is compatible with the original.

Then, remove the sash and place it on a table so that you can reach all four sides. If your sash was double-hung, remove the weights using their ropes that should have fallen into the pocket in the jamb lining. After you have removed the sash using the utility knife, take off the weather stripping from the old sash by hand or with the putty blade.

After the sash has been cleared, you can replace the parting stops. These are long pieces of wood that divide the two sashes. Pam prefers to use the standard 1/2-inch by 3/4 inch window trimmings from the lumberyard. However, you can also substitute for a scrap piece of lumber.

After removing the parting stop and cutting it to length after which, apply a thin layer of glazing compound to the bottom of the sash. Smooth the compound with your putty tool and let it dry at least a day. When the putty is fully dried, you can apply an acrylic latex topcoat. This will protect the putty and give your sash a fresh look.

Sash Hardware

The hardware that supports window sashes is prone to wearing out from age and use, and the result can be a door or window that isn't able to open or close easily. The good news is that repairing and replacing this hardware is generally very simple and cost-effective. If you're having trouble opening a sash spray some grease into the jamb channel. Then slide the sash up and open to see if this resolves the issue. If the issue continues it's most likely the sash balance. You will need to take off the window sash in order to reach this hardware.

Window sashes need to open and close with little effort. However, this may be difficult if the weights are worn out or the sash connecting rail isn't covered with. This problem can be due to various reasons such as the lack of maintenance or a mismatched weight rating.

If the hinge arms on a window begin to sag this can cause the sash drag and then hit the frame at the opposite corner (Photo 1). To address this problem, first ensure that the sash is firmly seated in the opening of the frame and then remove it from the window. If the sash is secured to the hinge arm, you'll need to loosen the hinge arm and replace it (Photo 2). Install the new sash (Photo 3).

Windows that are old, especially in older homes, can be difficult to open and close due to hinges that are sagging and general inefficiency. In most cases, a few simple repairs can turn these windows into smooth operators again and save the homeowner cash on energy costs.

To complete these sash repairs it is important to have all the necessary tools lined up before you begin. Begin by marking the location of the hinge channel on the frame with pencil (Photo 1). This will make it easier to place the channel in the correct location after you've completed. Remove the sash and take out all the hardware, including the parting beads, cords, and chains that keep the sash in place. Soften any hardened putty with a heat gun set to medium and fitted with a shield for the nozzle. Remove the old sash and store it in a labeled bag.

Sash Weights

Sash weights can be replaced to improve the performance of your window sash, and also reduce energy costs. Sash weights are heavy, lead or iron cylinders that are enclosed in a concealed cavity and attached to the movable sash by a rope. These weights provide counterbalance that allows the window to be shut and opened without the need for mechanical or electrical devices. When they fail, sashweights are usually ignored or disabled by homeowners.

A weight from a sash that fell out of the cavity is difficult to get back, so you will want to find a replacement that fits correctly. You will also require a new piece of string, a length of sashcord and a few sashpulleys for tying the weights you are replacing to the cord.

Older wood windows are joined with mortise and tenon joints. Pin punch and hammer can be used to take out the wood pegs holding the parts together. The majority of these pegs are large on one side, and smaller on the other. It is essential to first remove the smaller diameter sides. Later sashes utilized glue instead of pins. They can be separated by using a knife and a mallet.

Once the sash has been released, you can remove sash stops and gain access to the pockets for weights. This is usually done through a small hole in the bottom of each jamb. This hole is then covered by an access panel made of wood which can be removed to let you observe 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 old weight and replace it. Make sure you weigh the sash prior to you do this, as the weights that were previously used may be different sizes than what is needed. After the new weight has been installed, you can thread a string through the sash pulling mechanism. Then nail the string to the frame, but only leave a few inches of string sticking out from the head for future adjustments.

Sash Cords

In the majority of double-hung windows, a chain or cord is connected to the weights. This helps keep the sashes within the jamb in a balanced manner. Over time these cords can break, making it difficult to raise the window. A new sash cable can restore the ability to raise and lower the sash, and keep it in place when opened.

The first step to replace cords for sash is to locate and remove the access panels within the jambs. They are typically screwed or nailed into and need to be removed. It may be possible to remove them with a hammer or chisel, but it is always better to lay out dust sheets prior to beginning any work.

Once the access panel is removed, you can begin working on the sash. Prise the narrow parting beads (also known as "tie rails") out of their grooves with the chisel or flat bar. It's important to take your time, as these are often placed in a wedge or nail. If the sash remains in place, break the mortise-and-tenon joints out with a screwdriver or hammer and then remove each wood peg. The sash should move freely now, but it may need some lubrication to make it feel less stiff.

With the sash in an open position Take a measurement of the sash chain to reach from the pulley on the top of the jamb to the sash slot on the bottom. Cut the chain or cord, and window sash repairs then attach 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 haven't purchased an upgrade kit to replace the old counterbalance system, it's best to keep the original weights for balancing in place. It's not expensive to buy them from a salvage store and they'll be simple to install once you've got the sash unlocked. Depending on the size and shape of your window, you may need to use one or two sashweights in order to keep the sash open.