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Window Sash Repairs

Window sashes must be checked regularly for mold, mildew and other damage. You can save future repair costs by catching problems in the early stages before they get out of hand.

The sash is an interior frame that is able to move vertically up and down in windows that are open. This article will show you how to carry out a few simple repairs to sash.

Weather Stripping

Wooden window sashes can give an elegant appearance to your home. They are also sturdy and last for a long time when they are maintained properly. They may, however, get damaged or deteriorated over time due to exposure or normal wear. Sash repair specialists can restore windows to their original condition and keep them looking great longer than replacement windows.

The first step to sash window repairs is addressing weather stripping. It's found on both the sash and frame. If it's damaged or worn out, it could cause drafts and other problems. Start by identifying the window repairs's brand and the date of manufacture for the glass (etched on the corner of the glass or on the aluminum spacers between panes). Remove the sash, and mark its width and height so you can purchase replacement weather stripping that matches.

Then, remove the sash from its holder and place it on flat surfaces to allow you to see all four sides. If the sash is double-hung, you must remove the weights using their ropes that should be buried in the jamb lining. After removing the sash with the utility knife, take off the old weather stripping by hand or using a putty knife.

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

After removing the stoppers for parting and cutting them to the desired length then apply a thin layer of glazing compound to the bottom of the sash. Smooth the compound with your putty knife, then let it dry for at least a day. After it has fully dried, Window Repairs 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 window sashes prone to wearing out from age and use and the result could be a door or window that isn't able to open or close easily. The good thing is that fixing and replacing this hardware is typically very simple and cost-effective. If a sash is difficult to operate you can try spraying some oil into the jamb channel, and then slide it open to see if this fixes the problem. If the issue persists it's most likely that the sash balance is off. It is necessary to remove the window sash to access the hardware.

Ideally, window sashes should swing open and closed without effort, however, this can be difficult when the weights wear out or if the sash that joins rail isn't properly coated. This issue can be caused by a variety of factors, including lack of maintenance or by an incorrect weight rating for the particular window sash.

If the hinge arms on a window begin to sag this can cause the sash drag, and then eventually to hit the frame in the opposite corner (Photo 1). To remedy the issue ensure that the sash is centered in the frame opening, and then take it off. If the sash has been fixed to the hinge arm, unbolt the hinge and replace it. (Photo 2). Install the new sash next (Photo 3).

Windows that are old, especially in older houses, can be difficult to close and open due to hinges that are sagging and general inefficiency. In many instances, a few easy repairs can turn these windows into smooth operators and save homeowners money on energy bills.

To make these sash repairs, it's important to have all of the necessary tools in place before you begin. Mark the hinge channel's location on the frame (Photo 1) using pencil. This will allow you to position the channel in the correct location after you've completed. Remove the sash and then remove all hardware including the parting beads, cords, and chains that keep the sash in place. A hot gun with nozzle shield and medium setting will soften any putty that has been hardened. Take off the old sash and place it in a labelled bag.

Sash Weights

Sash weights are able to be replaced to improve the performance of your window sash, and also reduce energy costs. Sash weights are composed of heavy lead or iron cylinders that are enclosed in a hidden cavity and are connected via a rope to the movable window sash. These weights act as counterbalances, allowing you to open and close the window without having to use mechanical or electrical devices. If they fail, sashweights tend to be neglected or not used by homeowners.

A weight from a sash that fell out of the cavity is difficult to recover It is therefore important to find a replacement that fits correctly. You will also require an additional piece of string, a length the sash cord, as well as some sash pulleys that will tie the new sash weights the sash cord.

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

After the sash is released, you can remove sash stops and access the pockets for weights. Usually, this is done through an opening at the bottom of each jamb. The hole is then covered with a wooden panel that can be removed to reveal the inside workings.

After the sash has been stopped and the access panel is removed, you can take off the weight that was previously installed and replace it. Be sure to weigh the sash prior to you do this, since the old weights could be different sizes than what is needed. After the new weight is installed then tie a string to it and then thread it through the sash pulley. Then nail the string to the boxed frame, but only leave a few inches of string sticking out from the head for future adjustment.

Sash Cords

Most old double-hung windows have a cord or chain attached to the weights which helps keep the sashes balanced in the jamb. As time passes, these cords can get damaged and make it impossible to raise the windows. A new sash cable will restore the ability to raise and lower the sash and keep it in position when it is opened.

The first step to replace sash cords is to find and take out the access panels located in the jambs. These are usually attached by nails or screws and need to be removed. It may be possible to remove them using the hammer or chisel but it is always best to lay out dust sheets prior to beginning any work.

After removing the access panel, you can begin working on the sash. Utilize a flat bar, or chisel to pry the small partsing beads out of their grooves. They are typically wedged into or nailed but can be removed, so it's worth taking your time. If the sash remains in place, remove the mortise and the tenon joints by using the help of a hammer and pin or screwdriver, then remove the wood pegs on each component. It should now be possible to move the sash back and forth freely, though it might require lubrication if it feels stiff.

Measure the length of sash cord/chain required to reach the sash slot at the bottom, and the pulley at the top of the jamb. Cut the cord or chain and fix it as described in Step 6 above. You can employ a hammer and screws or nails, however nails are less likely to cause damage.

Unless you've bought a kit that replaces the counterbalance system that was in place before, it's recommended to keep the original balancing weights in place. They are not expensive and easy to install if you purchase them at architectural salvage stores. Based on the size and shape of your window, you may need to use one or two sashweights in order to keep it open.