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Window Sash RepairsWindow sashes need to be inspected regularly for signs of mold, mildew, and damage. By catching these problems early you can save money on repairs in the future.The sash is an interior frame that is vertically moved up or down in windows that open. This article will teach you how to perform several simple repairs to sash.Weather StrippingWood window sashes give the classic look to your home. If properly maintained, they will last for years. They may, however, become damaged or degraded with time due to exposure or normal wear and tear. Sash repair specialists can restore windows to their original state and maintain their beauty much longer than replacement windows.Weather stripping is the most important aspect to consider when you are repairing windows with sash. It's located on both the frame and sash. It could cause drafts if worn out or loose. To fix it, begin by determining your window's brand and the date of manufacture for the glass (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 find a replacement weather stripping that matches.Then, you can remove the sash from its holder, and place it on a flat surface to allow you to see all four sides. If your sash is double-hung, you'll also need to remove the weights and the ropes that go with them that should have fallen into the pocket of the jamb liner. Once you've removed the sash using a utility knife, you can use it to remove the old weather stripping at the corners, then remove it by hand or using a putty knife.After the sash is cleaned, you can replace the stoppers that separate the two sashes. These are long pieces wood that are used to separate the two sashes. Pam prefers to replace them with standard 1/2-inch-by 3/4-inch window trim from the lumberyard, but you can also replace them with a piece of scrap wood.After removing the stopper for the parting and trimming it to length and then apply a thin layer of glazing compound on the bottom of the sash. Smooth it out using your putty knife and let it dry for at least a day. Once the putty has fully dried, you can apply an acrylic latex topcoat. This coating will protect the putty and give your sash a new appearance.Sash HardwareThe hardware that holds the windows sashes can become worn out with time and use. This can result in the window or door that is difficult to open or close. The good news is that fixing and replacing this hardware is generally quite simple and inexpensive. If you are having trouble opening a sash spray some grease into the jamb channel. Then, you can slide the sash out to see if it resolves the issue. If not, the problem is likely to be with the sash balance, and you'll need to take out the sash to access the hardware.Ideally, window sashes must swing open and closed with very little effort, but this is a difficult task when the weights wear out or if the sash's meeting rail isn't properly coated. This problem can be caused by a variety of factors, including lack of maintenance or by an incorrect weight rating for the particular sash.If the hinge arms of a window are starting to slide, this could cause the sash to drag and eventually land on the frame in the corner in the opposite direction of the hinge arm (Photo 1). To resolve this problem, first ensure that the sash is squarely inserted into the opening of the frame and then take it out of the window. If the sash was screwed onto the hinge arm, remove the hinge and replace it. (Photo 2). Install the new sash (Photo 3).Due to 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 most instances, a few easy repairs can turn these windows into smooth operation for the first time and save the homeowner money on energy bills.It is essential to have the tools needed before you start. Mark the hinge channel's location on the frame (Photo 1) with a pencil. This will allow you to position the channel in the proper position after you've finished. Take the sash off and take out all the hardware including the parting beads cords, chains, and cords that keep the sash in place. The nozzle shield of the heat gun and medium setting will soften any hardened glue. Remove the old sash, and put it in a labelled bag.Sash WeightsSash weights can be replaced to improve the performance of your window sash and reduce energy costs. Sash weights consist of iron or lead cylinders that are enclosed inside a concealed cavity, and connected by ropes 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 ignored or disabled by homeowners.A weight from a sash that fell out of the cavity is difficult to recover and you'll need to find a new one that fits correctly. You will also require an additional piece of string, a length sash cord and some sash pulleys to tie the new sash weights the sash cord.Mortise and Tenon joints are used to join old wood windows. The wood pegs that keep 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 made use of glue instead of pegs and can be separated by cutting the glue line with the help of a knife, and then tapping the mortised part loose using a mallet.After the sash is removed then you can take out the sash stop and gain access to the weight pocket. Usually, this is done through an opening at the bottom of each jamb. Slough double glazing is covered by an access panel of wood which can be removed to let you see the inner workings of the frame.Once the sash is stopped and the access panel is removed, you can take off the weight that was previously installed and replace it. Weigh the sash first because the weights you have might not be the correct size. After the new weight is installed, thread the string through the sash pulling mechanism. Then, you can attach the string to the boxed frame. Leave a few inches protruding at the head of the string to allow for future adjustments.Sash CordsMost double-hung windows of the past come with a chain or cord attached to the weights that keeps the sashes in balance in the jamb. Over time these cords can break, making it difficult to raise the window. A new sash cable will give you the ability to raise and lower the sash, 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 usually fixed or screwed in and will need to be removed or repositioned. It may be possible to take them out using the hammer or chisel but it is always better to lay out dust sheets prior to beginning any work.After you have removed the access panel, you can begin working on the sash. Utilize a flat bar, or chisel to pull the narrow partsing beads out of their grooves. It's important to take your time as they're often placed in a wedge or nail. If the sash remains in place, remove the mortise and the tenon joints by using the help of a hammer and pin or screwdriver, and then take out the wood pegs on each component. The sash should move freely now, but it may need some lubrication to feel less stiff.Take a measurement of the length of sash cord/chain needed to reach the sash slot at the bottom of the pulley at the top of the jamb. Cut the cord or chain and fix it using the step 6 above. You can either use a hammer and screws or nails, however nails are less likely to cause damage.It is recommended to keep the original weights in place unless you've purchased a kit to replace the counterbalance that was previously installed. They are not expensive and are easy to install if you purchase them from salvage shops for architectural use. Based on the size and shape of your window, you may require one or two sashweights to keep the sash open.