Window Sash Repairs

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

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

Weather Stripping

Wooden window sashes can add an elegant appearance to your home. They are also sturdy and can last many years when they are maintained properly. However, they may become damaged or degraded over time because of exposure to the elements and normal wear and tear. Thankfully, sash repair experts can bring your windows back to their original condition and keep them looking fantastic for much longer than newer replacement windows.

Weather stripping is the most important issue to take care of when fixing sash windows. It's on both the frame and sash. It could cause drafts if worn or loose. To fix it, start 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 width and height so that you can purchase replacement weather stripping that matches.

Then, take the sash from its holder and place it on an even surface that allows you to reach all four sides. If your sash has been double-hung, remove the ropes and weights that should have fallen into the pocket inside the jamb lining. After removing the sash using the utility knife, you can remove the weather stripping that was left by hand or with the putty blade.

After the sash is cleaned, you can replace parting stops. These are long pieces of wood that are used to separate the two sashes. Pam prefers standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. However, you could also use a scrap piece of wood.

After removing the stopper and trimming it to length and then apply a thin layer of glazing compound to the bottom of the sash. Smooth the compound using a putty knife, and let it dry for at least one day. When the putty is fully cured, you can apply an acrylic latex topcoat. This will protect the putty and give your sash a modern look.

Sash Hardware

The hardware that supports window sashes can wear out over time and with use. This could result in a door repair or a window repair that is difficult to open or close. The good news is that repairing and replacing this hardware is typically very simple and cost-effective. If a sash isn't easy to operate try spraying grease into the jamb channel, and then open it to see if that fixes the problem. 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 this hardware.

Ideally, window sashes must swing open and closed without effort, but this can be an issue when the weights are worn or if the sash that joins rail isn't properly glazed. This could be caused by many factors that include a lack of maintenance and an unmatched weight rating.

If the hinge arms of a window are starting to sag, this can cause the sash to slide and eventually land on the frame in the corner directly opposite the hinge arm (Photo 1). To correct the issue ensure that the sash is aligned in the frame opening and then take it off. If the sash is screwed to the hinge arm, you'll have to unscrew the hinge arm and replace it (Photo 2). Install the new sash (Photo 3).

Due to hinges that are sagging, and a general deficiency in energy efficiency, windows that are old especially in older homes, may be difficult to open or close. In most instances, a few minor repairs can turn these windows into smooth operation again and save the homeowner money on energy costs.

In order to make these sash repairs, it's important to have all the necessary tools in place before you begin. Mark the location of the hinge channel on the frame (Photo 1) using a pencil. This will help you to place the channel in the right location after you've completed. Take the sash off and take out all the hardware including the parting beads cords, chains, and cords that hold the sash in place. 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 are able to be replaced to improve the performance of your window sash and decrease energy costs. Sash weights are hefty lead or iron cylinders, which are enclosed in a concealed cavity and attached to the movable window sash using a rope. These weights act as counterbalances, allowing you to open and shut the window without having to use mechanical or electrical devices. If they fail, sashweights are often ignored or disabled by homeowners.

A weight from a sash that fell out of the cavity is difficult to get back It is therefore important to locate a new one that fits properly. You will also need an additional piece of string, a length the sash cord, as well as some sash pulleys to tie the new sash weights to the sash cord.

Older windows made of wood are joined by mortise and tenon joints. The wood pegs that hold the parts together can be removed with the use of a pin punch and hammer. The majority of these pegs are large on one side and smaller on the other. It is crucial to remove first the smaller diameter sides. 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 area loose using a mallet.

After the sash is removed then you can take out the sash stop and access the weight pocket. 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.

Once you have the sash stopped and the access panel removed, you'll be able to remove the old sash weight and replace it with new. Weigh the sash first because the weights you have might not be of the right size. After the new weight is installed then tie a string to it and then thread it through the pulley for the sash. Then nail the string to the boxed frame, leaving a few inches of string hanging from the head for future adjustments.

Sash Cords

In most old double-hung window the chain or cord is connected to the weights. This keeps the sashes of the jamb level. Over time, these chains can get damaged and render it impossible to raise the windows. A new sash cable can restore the ability to raise and lower the sash, and keep it in position when it is opened.

To replace sash cords, the first step is to remove the access panels from the jambs. They are usually screwed or nailed into and require removal. It is possible to remove them with a hammer or chisel, however, it is best to lay out dust sheets before beginning any work.

After the access panel has been removed, you can begin working on the sash. Utilize a flat bar or chisel, to pry the small parting beads out of their grooves. It's important to be patient because they are usually wedged or nailed in place. If the sash remains in place, pry the mortise and tenon joints free with a hammer or screwdriver and then remove each wood peg. You should now be able to move the sash back and forth freely, although it might require oiling if it seems stiff.

Measure the length of the sash chain or sash cord required to reach the sash slot at the bottom from the pulley on the top of the jamb. Cut the cord/chain and then secure it as in the previous step. You can either use a hammer and screws or nails, however nails are less likely to cause damage.

If you haven't purchased a kit that replaces the counterbalance system that was in place before, it's best to keep the original balancing weights in place. It's cheap to purchase these from salvage shops for architectural purposes and they'll be easy to install once you've got the sash open. Depending on the size and shape of your window, you may require one or two sashweights to keep it open.