Window Sash Repairs

Window sashes must be regularly checked for mold, mildew and other damage. By catching these problems early you can save money on repairs in the future.

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

Weather Stripping

Wooden window sashes can add an elegant appearance to your home. They are also sturdy and last for a long time provided they are properly maintained. However, they can get damaged or deteriorated over time due to exposure or normal wear. Fortunately, sash repair specialists can bring your windows back to their original condition and maintain their appearance for much longer than newer replacement windows.

The first step to sash window repairs is addressing weather stripping, which is found on both the sash and frame. If it's worn or loose, out, it could cause drafts and other problems. Begin by identifying the window's brand and the manufacturer's date (etched on the glass's corner or on the aluminum spacers between panes). Then, take the sash off and mark its height and width, so you can find replacement weather stripping to match.

Next, remove the sash and place it on a surface so that you can reach all four sides. If your sash has been double-hung, take out the weights with their ropes that should have fallen into the pocket inside the jamb lining. After removing the sash using the utility knife, you can remove the old weather stripping by hand or using the putty blade.

Once the sash has been cleared, you can install the stoppers that separate the two sashes. These are long pieces that split the sashes. Pam prefers to use standard 1/2-inch by 3/4-inch window trim from the lumberyard. But, you can also use for a scrap piece of lumber.

After removing the stopper and cutting it to length, apply a thin coat of glazing compound over the bottom of the sash. Smooth the compound with your putty tool and let it dry at least a day. Once the putty has fully dried it is possible to apply an acrylic latex topcoat. This will protect the putty and give your sash a fresh look.

Sash Hardware

The hardware that holds the windows sashes can become worn out over time and with use. This could result in windows or doors 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 you are having trouble opening a sash, spray some lubricant into the jamb channel. Then, you can slide the sash up and open to see if that fixes the issue. If the issue continues it's most likely the sash balance. You'll need to take off the upvc window repairs sash in order to reach this hardware.

Ideally, window sashes must swing open and closed with minimal effort however, this can be difficult when the weights are worn or if the sash that joins rail isn't properly coated. This issue can be caused by a variety of things, such as insufficient maintenance or an incorrect weight rating for a particular window sash.

If the hinge arms on the window begin to move, this could cause the sash to drag, and then eventually to hit the frame at the opposite corner (Photo 1). To fix this problem, first ensure that the sash fits squarely in the opening of the frame and then remove it from the window. If the sash is secured to the hinge arm, you'll have to remove the hinge arm and replace it (Photo 2). Then, you can install the new sash (Photo 3).

Because of sagging hinges and a general deficiency in energy efficiency, windows that are old especially in older homes, can be difficult to open and close. In many instances, a few minor repairs can turn these windows into smooth operation and save homeowners cash on energy costs.

It is important to have the tools you require before you begin. Begin by marking the location of the hinge channel on the frame with pencil (Photo 1). This will allow you to position the channel in the correct position after you've finished. Remove the sash, and then remove the hardware, including the parting beads (Photo 2) and the chains or cords that secure it. A hot gun with nozzle shield and a medium setting will soften any putty that has been hardened. Remove the old sash and place it in a bag that is labeled.

Sash Weights

Sash weights can be changed to improve the operation of your window sash, and also reduce the cost of energy. Sash weights are composed of heavy lead or iron cylinders that are enclosed in a concealed cavity and connected by a rope to the movable window sash. These weights act as counterbalances, which allows you to open and shut the window without requiring mechanical or electrical devices. If they fail, sashweights tend to be left unnoticed or disabled by homeowners.

A sash weight that has fallen out of the cavity is difficult to get back and you'll need to find a replacement that fits properly. You will also require a new piece of string, a length of sashcord and some sashpulleys to tie the new weights to the cord.

Mortise and Tenon joints can be used to join older wood windows. The wood pegs that hold the parts together can be removed with pin punches and hammers. The majority of these pegs are big on one side, and smaller on the other. It is essential to first remove the smaller diameter sides. Sashes that were made later in the century used glue instead of pegs and can be separated by cutting through the glue line using the help of a knife, and then tapping the mortised area loose with a mallet.

After the sash is released, you can remove sash stops and gain access to the weight pockets. Usually it is done by drilling an opening at the bottom of each jamb. This hole is covered with the wooden panel which can be removed to reveal the inner workings.

After the sash has been stopped and the access panel removed, you'll be able to take off the weight of the old sash and replace it with new. Be sure to weigh the sash first because the weights you've got may not be the right size. Once the new weight is installed, tie a string to it and then thread it through the pulley for the sash. Then, attach the string to the boxed frame. Leave a few inches at the head of the string for future adjustments.

Sash Cords

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

The first step to replace cords for sash is to locate and take out the access panels located in the jambs. These are usually nailed or screwed in and will need to be removed or relocated. It is possible to remove them using an axe or hammer, but it is always better to lay out dust sheets prior to beginning any work.

After you have removed the access panel, you are able to begin working on the sash. Utilize a flat bar, or chisel to pry the small parting beads out of their grooves. It is important to take your time, as these are often stuck or nailed to the floor. If the sash is still in place, pull the mortise-and tenon joints with a hammer or screwdriver and then remove each wood peg. The sash should move freely, however it may need some lubrication to feel less stiff.

Take a measurement of the length of sash chain/sash cord needed to reach the sash slot at the bottom from the pulley located at the top of the jamb. Cut the chain or cord and Window Repairs attach it as described in Step 6 above. You can do this with a hammer, nails, or screws. However, nails are less likely than screws to cause damage.

If you don't have an upgrade kit to replace the old counterbalance system, 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 have the sash opened. Based on the size and shape of your window you might need to install one or two sashweights in order to keep the sash open.