Window Sash Repairs
Window sashes must be inspected regularly for signs of mold, mildew and other damage. You can reduce the cost of repairs in the future by catching these issues in the early stages, before they get out of hand.
The sash is the internal frame that is vertically moved up or down in windows that open. This article will teach you how to make several easy repairs to your sash.
Weather Stripping
Wood window sashes add the classic look to your home. When properly maintained, they can last for a long time. However, they can be damaged or degraded over time due to exposure and normal wear. Sash repair experts can restore windows to their original state and maintain their beauty longer than replacement windows.
The first step in repair sash windows is to address weather stripping, which can be found on both the sash and frame. It could cause drafts if worn or loose. To fix it, start by determining your window's brand and the date on which the glass was manufactured (etched in the corner of the glass or on the aluminum spacer between panes). Then, remove the sash and mark its height and width to find the appropriate weather stripping replacement to match.
Next, remove the sash and set it on a surface so that you can reach all four sides. If your sash has been double-hung, take out the weights using their ropes that should have fallen into the pocket in the jamb lining. Once you've taken the sash off, use a utility knife to cut off the weather stripping from the corners. Then, remove it manually or using a putty knife.
When the sash is clean it is time to replace the parting stops. These are long pieces wood that separate the two sashes. Pam prefers to use standard 1/2-inch by 3/4-inch window trimming from the lumberyard. But, you can also use a scrap piece of wood.
After removing the stoppers for parting and cutting them to the desired length, apply a thin layer of glazing compound on the bottom of the sash. Smooth the compound with your putty knife, then let it dry for a minimum of a day. After it has fully dried 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 window sashes may wear out over time and with use. This could lead to the window or door that is difficult to open or close. It's important to know that replacing or repair of this hardware is typically straightforward and cost-effective. If you are having trouble opening the sash, spray some lubricant into the jamb channel. Then, you can slide the sash open to see if it resolves the problem. If not, the problem is likely with the sash balance and you'll need to remove the sash in order to access this hardware.
Window sashes need to open and close with little effort. However, this may be difficult if the weights are worn out or the sash meeting rail is not properly covered with. This problem can be caused by a number of reasons, such as insufficient maintenance or an incorrect weight rating for a particular sash.
If the hinge arms on the window begin to move, this could cause the sash to drag and eventually hit against the frame in the opposite corner (Photo 1). To correct the issue ensure that the sash is aligned in the frame's opening and remove it. If the sash is secured to the hinge arm, you'll have to loosen the hinge arm and replace it (Photo 2). Then, put in the new sash (Photo 3).
Due to hinges that are sagging, and a general deficiency in energy efficiency, older windows especially in older homes, may be difficult to open and close. Sometimes it is a matter of making a few minor adjustments that can help these windows function smoothly and help homeowners save money on energy costs.
In order to make these repairs to sash, it's important to have all the necessary tools in place before you begin. Mark the hinge channel's location on the frame (Photo 1) using a pencil. This will assist you in getting the channel back in the correct position after you've finished. Take the sash off and then remove all hardware, including the beads for parting, cords, and chains that keep the sash in place. A hot gun with nozzle shield and a medium setting will soften any hardened putty. Take off the old sash and place it in a bag that is labeled.
Sash Weights
Sash weights can be replaced to improve the performance of your window sash and reduce energy costs. Sash weights are made of heavy iron or lead cylinders that are enclosed in a concealed cavity and attached by ropes to the moveable window sash. They are counterbalancers which allows the window to be opened and closed without the use of electrical or mechanical 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 recover and you'll need to locate a new one that is suitable for the. window repairs will also require a new piece of string, a length of sash cord and some sash pulleys to connect the new sash weights to the sash cord.
Older wood windows are joined using mortise and tenon joints. Hammers and pins can be used to cut off the wood pegs that hold the components together. The majority of them are large 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. They can be separated by cutting through the glue line using an instrument, and then tapping the mortised part loose using a mallet.
After the sash is released, you can remove the sash stops and access the pockets for weights. Usually, this is done through an opening in the bottom of each jamb. The hole is surrounded by a wooden panel that can be removed to reveal the inside workings.
After you have the sash stopped and the access panel removed, you will be able to remove the weight from the sash and replace it with new. Be sure to weigh the sash first, as the weights you've got may not be the right size. After the new weight is installed, run an appropriate length of string through the pulling mechanism. Then nail the string to the frame, leaving a few inches of string hanging from the head for future adjustment.
Sash Cords
Most old double-hung windows come with a chain or cord attached to the weights that keeps the sashes balanced within the jamb. As time passes, these cords may break, making it impossible to raise the window. A new sash cable can restore the ability to move and lower the sash, and keep it in place when it is opened.
The first step in replacing sash cords is to find and remove the access panels in the jambs. These are usually attached by nails or screws and need to be removed. It is possible to remove them using the hammer or chisel however, it is best to lay out dust sheets prior to starting any work.
Once the access panel is removed, you can start working on the sash. Use a flat bar or chisel to pull the tiny parting beads out of their grooves. They are typically wedged into or nailed but can be removed which is why it's worth your time. If the sash remains in place, pry out the mortise and tenon joints using a hammer and pin punch or screwdriver, then unhook the wood pegs on each piece. It should now be possible to move the sash around freely, though it might require oil if it feels stiff.
Determine the length of the sash chain or sash cord needed to reach the sash slot at the bottom from the pulley on the top of the jamb. Cut the chain or cord, and then secure it in the step 6 above. You can use either a hammer, nails, or screws. However, nails are less likely to cause damage.
If you haven't purchased a kit that replaces the counterbalance system that was in place before, it's recommended to keep the original weights for balancing in place. They're not costly and easy to install if purchased them from salvage shops for architectural use. Depending on the size of your window one or two sashweights could be needed to keep it in an open position.