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Window Sash Repairs
Window sashes need to be regularly checked for mold, mildew and other damage. You can avoid the cost of repairs in the future by catching the issues in the early stages before they become out of control.
The sash is an interior framing that can be moved vertically upwards or downwards in windows that are open. This article will show you how to perform several simple sash repair.
Weather Stripping
Wood window sashes give the classic look to your home. If properly maintained, can last for years. They may, however, be damaged or degraded over time due to exposure and normal wear. Fortunately, sash repair specialists can restore your windows to their original condition and maintain their appearance for longer than replacement windows.
The first step for repair sash windows is to address weather stripping. It's found on both the sash as well as the frame. If it's worn or loose, out, it could cause drafts, as well as other issues. Begin by identifying the brand of window and the date of manufacture for the glass (etched on the glass's corner, or the aluminum spacers between panes). Remove the sash and mark its size and width so that you can get replacement weather stripping that matches.
Then, take it off and set it on a table to allow access to all four sides. If your sash was double-hung, take out the weights with their ropes that should fall into the pocket in the jamb lining. After you have removed the sash using the utility knife, take off the weather stripping that was left by hand or with a putty blade.
After the sash has been cleared it is time to replace the parting stops. These are long pieces that separate the sashes. Pam likes to replace them with standard 1/2-inch by 3/4-inch window trim from the lumberyard, however you can also replace them with scrap wood.
After removing the stoppers for parting and trimming them to your desired length then apply a thin layer of glazing compound to the bottom of the sash. Smooth it out using your putty knife, and then let it dry for at least a day. When it's completely dried then apply a top coat of acrylic latex paint. This coating will protect the putty and give your sash a new look.
Sash Hardware
The hardware that supports window sashes can wear out over time and use. This could lead to the window or door that is difficult to open or close. It's good to know that replacing or fixing this hardware is usually straightforward and cost-effective. If you're having difficulty opening the sash, spray some oil into the jamb channel. Then, you can slide the sash up and open to see if it resolves the problem. If the issue continues it's most likely that the sash balance is off. You'll need to take off the window sash to access the hardware.
Sashes for windows should be able to be able to open and close with minimal effort. However, this may be a challenge if the weights have been worn out or the sash-to-rail meeting rail is not properly glazed. This issue could be caused by a variety of things, such as the lack of maintenance or the wrong weight rating for the specific sash.
If the hinge arms on the window begin to move, this could cause the sash to drag and then hit the frame in the opposite corner (Photo 1). To resolve this issue, first make sure the sash fits squarely in the frame's opening and then take it out of the window. If the sash was screwed onto the hinge arm, unbolt the hinge and replace it. (Photo 2). Next, install the new sash (Photo 3).
Due to sagging hinges, and a general lack in energy efficiency, older windows, especially those in older houses, could be difficult to open or close. Sometimes just a few easy fixes can make these windows operate smoothly and help homeowners save money on energy costs.
To make these repairs to the sash it is essential to have all of the necessary tools lined up before you begin. Begin by marking the location of the hinge channel on the frame using pencil (Photo 1). This will help you get the channel back into place correctly when you're finished. Remove the sash and take off the hardware including the parting beads (Photo 2) and the chains or cords that hold it in place. Soften any hardened putty with the help of a heat gun set at medium and equipped with a nozzle shield. Remove the old sash, and put it in a labelled bag.
Sash Weights
Sash weights are able to be replaced to enhance the efficiency of your window sash, and also reduce the energy cost. Sash weights are composed of heavy lead or iron cylinders that are encased in a hidden cavity and connected by ropes to the moveable window sash. These weights function as counterbalances, which allows you to open and close the window without requiring mechanical or electrical devices. When they fail, sashweights are often neglected or not used by homeowners.
A weight in a sash that has fallen out of the cavity is difficult to get back and you'll need to find a new one that fits properly. You will also require an additional piece of string, a length sash cord and some sash pulleys to connect the new sash weights the sash cord.
Mortise and Tenon joints can be used to join old wood windows. The wood pegs that hold the parts together can be removed with a pin punch and hammer. The majority of these pegs have a large diameter on one side and a smaller diameter on the other, which is why it is essential to remove the smaller-diameter ones first. Sashes made later in the century utilized glue instead of pegs and can be separated by cutting through the glue line with a knife, then tapping the mortised area loose with mallets.
After the sash is removed then you can take out the sash stop and gain access to the weight pocket. Usually it is done by drilling an opening at the bottom of each jamb. This hole is covered by an access panel of wood that can be ripped off so that you can view the inside of the frame.
After the sash has been stopped and the access panel removed, you will be able to take off the weight of the old sash and replace it with new. Be sure to weigh the sash before you begin, as the old weights may be a different size than what you require. After the new weight is in place you can tie a string around it and then thread it through the sash pulley. Then, attach the string to your boxed frame. Leave a few inches at the top of the string to allow for future adjustments.
Sash Cords
Most old double-hung windows include a chain or cord connected to the weights that helps keep 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 up and down 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 installed by screws or nails and will need to be removed or moved. It is possible to remove them with the hammer or chisel but it is always best to lay out dust sheets prior to starting any work.
After removing the access panel, you are able to begin to work on the sash. Use a flat bar or chisel to pry the small parting beads from their grooves. It is important to take your time, as these are often wedged or nailed in place. If the sash remains in place, pry the mortise-and tenon joints using a hammer or screwdriver and then remove each wood peg. You should now be able to move the sash around freely, although it will probably need some oil if it feels stiff.
With window repairs in an open position With the sash in an open position, measure the sash chain or cord to reach from the pulley in the top of the jamb to the sash slot on the bottom. Cut the chain or cord and fix it as described in the previous step. You can do this with a hammer, nails, or screws. However, nails are less likely than screws to cause damage.
If you haven't purchased a kit that replaces the counterbalance system that was in place before, it is recommended to keep the original weights for balancing in place. They're not expensive and simple to install if purchased them at architectural salvage stores. Based on the size of your window one or two sashweights could be needed to keep the sash in an open position.