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Window Sash Repairs

window repair sashes need to be regularly checked for mold, mildew and other damage. By catching problems before they become serious you can save money on future repairs.

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

Weather Stripping

Wooden window sashes can give an elegant look to your home. They are also durable and can last many years when they are maintained properly. However, they can be damaged or degraded over time due to exposure or normal wear and tear. Thankfully, sash repair experts can restore your windows back to their original condition and keep them looking fantastic for much longer than newer replacement windows.

The first step to sash window repairs is addressing weather stripping. It's found on both the sash and frame. It can cause drafts if damaged or is loose. Begin by identifying the window's brand and the glass manufacturer's date (etched on the glass's corner, or the aluminum spacers between panes). Then, take the sash off and mark its width and height to find the appropriate weather stripping replacement to match.

Next, remove the sash and set it on a work surface so you can access all four sides. If your sash is double-hung, you'll need to remove the weights as well as their ropes, which should have fallen into the pocket of the jamb liner. Once you've removed the sash and the weights, use a utility knife to cut away the weather stripping that was formerly in place at the corners, then take it off by hand or using a putty blade.

Once the sash has been cleaned, you can replace the stoppers that separate the two sashes. These are long pieces that separate the sashes. Pam prefers to use the standard 1/2-inch by 3/4 inch window trimming from the lumberyard. However, you can also substitute with a scrap piece of wood.

After removing the parting stop and trimming it to length, apply a thin coat of glazing compound to the bottom of the sash. Smooth the compound with your putty knife, and let it dry at least a day. After it has fully dried and dried, apply a second coat of acrylic latex paint. This will protect the putty, and give your sash a modern look.

Sash Hardware

The hardware that supports window sashes is susceptible to wear and tear due to the wear and tear of use and the result could be a door or window that won't open or close easily. The good thing is that fixing 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 open to see if this resolves the issue. If not, the issue is likely with the sash balance and you'll need to take out the sash in order to access the hardware.

Sashes for windows should be able to open and close with little effort. However, this may be difficult if weights are worn out or the sash meeting rail is not properly coated. This issue can be caused by a variety of reasons, such as lack of maintenance or by an incorrect weight rating for the particular sash.

If the hinge arms on windows begin to slide, this could cause the sash to drag, and then eventually to hit the frame in the opposite corner (Photo 1). To remedy the issue, make sure that the sash is centered in the frame's opening and take it off. If the sash is fixed to the hinge arm, take it off the hinge and replace it. (Photo 2). Then, put in the new sash (Photo 3).

Due to sagging hinges, and a general lack of energy efficiency, old windows especially in older homes, can be difficult to open and close. Sometimes just a few easy fixes can help these windows function smoothly and save homeowners money on their energy bills.

To complete these sash repairs, it's important to have all of the tools needed before you begin. Start by marking the location of the hinge channel on the frame using a pencil (Photo 1). This will help you to position the channel in the correct location after you've completed. Remove the sash and take out all the hardware including the parting beads cords, chains, and cords that keep the sash in place. Heat gun with nozzle shield and medium setting will soften any hardened putty. Take off the old sash and put it in a bag labeled.

Sash Weights

Sash weights are able to be replaced to enhance the efficiency of your window sash and decrease the energy cost. Sash weights are heavy lead or iron cylinders, which are enclosed in a concealed cavity and connected to the movable window sash using a rope. These weights function as counterbalances, which allows you to open and close the window without the need for mechanical or electrical devices. When they fail, sashweights are usually left unnoticed or disabled by homeowners.

A weight in a sash that has fallen out of the cavity is difficult to recover and you'll need to find a new one that fits correctly. 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 are used to join old wood windows. Pin punch and hammer can be used to remove the wood pegs that hold the parts together. The majority of these pegs are big on one side and smaller on the other. It is important to remove first the smaller diameter sides. Later sashes utilized glue instead of pins. They can be cut by using a knife or mallet.

After the sash is released, you can remove the sash stops and access the weight pockets. This is usually done via a small hole in the bottom of each jamb. The hole is then covered with an access panel made of wood that can be ripped off to let you view the inside of the frame.

After the sash has been stopped and the access panel has been 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 may be a different size than the one you need. After the new weight has been installed, thread a string through the sash pulling mechanism. Then nail the string to the boxed frame, but leave a few inches of string sticking out from the head for future adjustment.

Sash Cords

Most double-hung windows of the past have a cord or chain connected to the weights that keeps the sashes in balance within the jamb. Over time, these cords could break, making it difficult to raise the window. A new sash cord can restore the ability to move the sash upwards and downwards and keep it in place when it is opened.

To replace sash cords, the first step is to remove the access panels from the jambs. They are typically screwed or nailed in and require removal. You could use a hammer and chisel to prise them off but it's best to lay down dust sheets prior to commencing any work.

After removing the access panel, you can begin working on the sash. Utilize a flat bar, or chisel, to pry the narrow partsing beads out of their grooves. It is important to be patient as they're often placed in a wedge or nail. If the sash is still in place, break the mortise-and-tenon joints out using a hammer or screwdriver and then take out each wood peg. It should now be possible to move the sash around freely, though it might require oil if it feels stiff.

With the sash open Take a measurement of the sash chain to extend from the pulley at the top of the jamb to the sash slot at the bottom. Cut the cord/chain, and then fix it using Step 6 above. You can either use a hammer and screws or nails, but nails are less likely to cause damage.

If you don't have an item that replaces the counterbalance system that was in place before, it's recommended to keep the original weights for balancing in place. They are not expensive and are easy to install if you purchase them from architectural salvage stores. Depending on the size and shape of your window, you might need to install one or two sashweights to keep it open.