Window Sash Repairs
Regularly inspect the window sashes for any damage, mildew and mold. By catching these problems early, you can save money on future repairs.
The sash is an internal frame that moves up and down vertically in windows that open. This article will teach you how to make several simple sash repairs.
Weather Stripping
Wood window sashes add an elegant look to your home. When properly maintained, they will last for many years. However, they can get damaged or deteriorated over time, due to exposure and normal wear and tear. Fortunately, sash repair specialists can restore your windows to their original condition and keep them looking great for much longer than newer replacement windows.
The first step for repair sash windows is to address weather stripping. It's found on both the sash and frame. If it's worn or loose, out, it can lead to drafts and other issues. To fix it, begin by determining your window's brand 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 size and width so that you can get replacement weather stripping that matches.
Then, you can remove the sash from the holder and place it on a flat surface to allow you to reach all four sides. If the sash is double-hung, you must remove the ropes and weights that should be buried within the jamb lining. After you've removed the sash using a utility knife, you can use it to cut away the weather stripping from the corners, and then remove it by hand or using a putty blade.
After the sash is cleaned, you can replace the stoppers that separate the two sashes. These are long pieces that split the sashes. Pam prefers standard 1/2-inch by 3/4-inch window trim from the lumberyard. However, you can also substitute for a scrap piece of lumber.
After removing the parting stops and trimming them to the desired length and thickness, apply a thin layer of glazing compound over the bottom of the sash. Smooth it out using your putty knife, and then let it dry for at least a few days. Once it's fully cured and dried, apply a second coat of acrylic latex paint. This coating will protect the putty and give your sash a fresh look.
Sash Hardware
The hardware that supports the window sashes can wear out over time and with use. This can result in windows or doors that is difficult to open or close. The good news is that repairing and replacing this hardware is usually quite simple and inexpensive. If a sash is difficult to operate try spraying oil into the jamb channel and then slide it open to see if this solves the issue. If the issue continues it's likely the sash balance. You will need remove the window sash to access the hardware.
Ideally, window sashes must swing open and closed with very little effort, but this can be difficult when the weights wear out or if the sash's meeting rail isn't properly coated. This issue can be due to various reasons that include the lack of maintenance or a mismatched weight rating.
If the hinges on windows begin to slide, this can cause the sash drag and eventually hit against the frame at the opposite corner (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 window repair is fixed to the hinge arm, remove the hinge and replace it. (Photo 2). Install the new sash next (Photo 3).
Windows that are old, especially in older homes, can be difficult to close and open due to sagging hinges and a general lack of energy efficiency. In many cases just a few easy fixes can help these windows function smoothly and save homeowners money on energy bills.
It is crucial to have the tools needed before you start. Mark the hinge channel's location on the frame (Photo 1) with pencil. This will allow you to place the channel in the proper place when you are finished. Remove the sash and remove the hardware including the parting beads (Photo 2) and the chains or cords which hold it in place. Heat gun with nozzle shield and a medium setting can soften any hardened glue. Remove the old sash, and store it in a labeled bag.
Sash Weights
Sash weights are able to be replaced to improve the operation of your window sash and reduce the energy cost. Sash weights consist of iron or lead cylinders that are encased in a concealed cavity and attached by ropes to the movable window sash. They function as counterbalances and allow 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.
It is difficult to recover the sash-weight that fell from the cavity, so you'll want to find one that is suitable for the. You will also require a new piece string, a length of sashcord and a few sashpulleys for tying the weights you are replacing to the cord.
Mortise and Tenon joints are used to join old wood windows. Hammers and pins can be used to take out the wood pegs holding the parts together. The majority of them are large on one side, but smaller on the other. It is essential to first remove the smaller diameter sides. Sashes made later in the century used 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 part loose using a mallet.
After the sash is removed, you can take off the 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 inner workings.
When the sash has been shut off and the access panel has been removed, you can take off the weight you used and replace it. Be sure to weigh the sash prior to you do this, as the weights that were previously used may be different in size from what you require. After the new weight is in place, tie a string to it and thread it through the pulley for the sash. Then, nail the string to the boxed frame. Leave a few inches of space at the head of the string for future adjustments.
Sash Cords
In the majority of old double-hung windows, a chain or cord is affixed to the weights. This keeps the sashes within the jamb level. Over time these cords can break, making it impossible to raise the window. A new sash cable will give you the ability to raise and lower the sash and ensure it stays in place when it is opened.
The first step in replacing sash cords is to locate and remove the access panels within the jambs. They are usually nailed or screwed in and will need to be removed or relocated. It is possible to take them out using a hammer or chisel, however, it is best to lay out dust sheets prior to beginning any work.
After the access panel has been removed, you can start working on the sash. Utilize a flat bar or chisel to pull the small parting beads out of their grooves. These are often wedged in or nailed but can be removed and it's worth your time. If the sash remains in place, pry out the mortise and the tenon joints by using a hammer and pin punch or screwdriver, then unhook the wood pegs that are on the components. The sash should be able to move freely now, but it may require some lubrication to feel less stiff.
Measure the length of sash cord/chain required to reach the sash slot on the bottom of the pulley at the top of the jamb. Cut the cord or chain and secure it as in Step 6 above. You can employ a hammer, nail or screws, but nails are less likely to cause damage.
It's best to leave the weights that came with the original counterbalance unless you've purchased a kit that will replace the counterbalance that was previously installed. They're not costly and are easy to install if purchased them from salvage shops for architectural use. Depending on the size and shape of your window, you might need to install one or two sashweights in order to keep the sash open.