Window Sash Repairs
Sashes for windows must be checked regularly for mold, mildew and other damage. You can reduce the cost of repairs in the future by catching these issues early, before they become out of control.
The sash is an inside frame that moves up and down vertically in windows that open. This article will show you how to do simple repairs to sash.
Weather Stripping
Wooden window sashes can give an elegant appearance to your home. They are also durable and will last for many years if they are properly maintained. However, they can become damaged or deteriorate over time due to exposure to the elements and normal wear and wear and tear. However, sash repair experts can restore your windows back to their original condition and keep them looking fantastic for longer than replacement windows.
The first step in repair sash window damage is to fix weather stripping. It's found on both the sash and frame. If it's damaged or worn out, it can lead to drafts and other problems. Begin by identifying the brand of window and the glass manufacturer's date (etched on the glass's corner or on the aluminum spacers between panes). Take the sash off and mark its size and width so that you can get replacement weather stripping that matches.
Then, take the sash from its holder, and place it on an even surface that allows you to access all four sides. If your sash was double-hung, take out the weights with their ropes that should be buried within the jamb lining. After you have removed the sash using the utility knife, you can remove the old weather stripping by hand or using the putty blade.
Once the sash has been cleared, you can replace parting stops. These are long pieces that separate the sashes. Pam prefers to replace them with standard 1/2-inch-by 3/4-inch window trim from the lumberyard, however you can also use scrap wood.
After removing the parting stop and cutting it to length and then apply a thin layer of glazing compound to the bottom of the sash. Smooth the compound with your putty knife and let it dry for at least a few days. Once the putty has fully cured, you can apply an acrylic latex topcoat. This coating will protect the putty and give your sash a new look.
Sash Hardware
The hardware that supports window sashes prone to wearing out from the wear and tear of use and the result could be a door or window that can't be opened or closed easily. It's important to know that replacing and fixing this hardware is usually easy and affordable. If a sash becomes difficult to operate, try spraying some oil into the jamb channel then slide it open to see if that solves the issue. If not, the problem is most likely due to the balance of the sash and you'll need to remove the sash to access the hardware.
Ideally, window repair must swing open and closed with very little effort, but this is an issue if the weights become worn or if the sash meeting rail isn't properly coated. This issue can be caused by a variety of reasons, such as the lack of maintenance or the wrong weight rating for a particular window sash.
If the hinges on windows begin to slide, this can cause the sash drag, and then eventually to hit the frame in the opposite corner (Photo 1). To resolve this issue, first make sure the sash is squarely inserted into the frame's opening and then take it out of the window. If the sash is screwed to the hinge arm, you'll need to unscrew the hinge arm and replace it (Photo 2). Then, you can install the new sash (Photo 3).
Windows that are old, especially in older homes, may be difficult to open and close, due to hinges that are sagging and general inefficiency. In most instances, a few minor repairs can transform these windows into smooth operation for the first time and save the homeowner money on energy bills.
In order to make these repairs to sash, it's important to have all of the tools needed before you begin. Mark the location of the hinge channel on the frame (Photo 1) using a pencil. This will assist you in getting the channel back on position correctly after you've completed. Then, remove the sash and take off the hardware including the parting beads (Photo 2) and the chains or cords that secure it. The nozzle shield of the heat gun and a medium setting can soften any putty that has been hardened. Remove the old sash and keep it in a bag labeled.
Sash Weights
No matter if your window sash repair needs are to replace a damaged cord or to ensure that the windows are functional by replacing worn out sash weights will improve sash operation and help reduce energy costs. Sash weights are composed of iron or lead cylinders that are enclosed in a hidden cavity and attached by ropes to the moveable window sash. These weights act as counterbalances, allowing you to open and shut the window without the need for mechanical or electrical devices. The sash-weights are typically ignored or discarded by homeowners and turned into scrap when they fail; therefore, you may need to find replacements.
A weight from a sash that fell out of the cavity is difficult to retrieve and you'll need to locate a new one that fits correctly. You will also require a new piece of string, a length of sashcord and a few sashpulleys to secure the weights you are replacing to the cord.
Mortise and Tenon joints are used to join windows made of older wood. Hammers and pins can be used to remove the wood pegs that hold the components 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. Sashes that were made later in the century used glue instead of pegs. They can be separated by cutting the glue line using the help of a knife, and then tapping the mortised area loose with mallets.
Once the sash is freed, you can remove the sash stop and gain access to the weight pocket. This is usually done via a small hole at the bottom of each jamb. This hole is covered with the wooden panel which can be removed to reveal the inside workings.
When the sash has been shut off and the access panel has been removed, you can remove the weight you used and replace it. Weigh the sash first because the weights you have might not be the correct size. Once the new weight is installed, run an appropriate length of string through the pulling mechanism. Then, attach the string to the boxed frame. Leave a few inches at the top of the string for future adjustments.
Sash Cords
In the majority of old double-hung windows the chain or cord is attached to the weights. This helps keep the sashes in the jamb in a balanced manner. Over time, these chains can become damaged and make it difficult to raise the windows. A new sash cord will restore the ability to move the sash upwards and downwards and hold it in position when it is opened.
The first step to replace sash cords is to find and remove the access panels within the jambs. These are usually screwed or nailed in and must be removed. It is possible to remove them with the hammer or chisel but it is always best to lay out dust sheets before beginning any work.
Once the access panel is removed, you can start working on the sash. Take the narrow beads (also called "tie rails") out of their grooves with flat bar or chisel. It is essential to be patient as they're often stuck or nailed to the floor. If the sash is still in place, remove the mortise and tenon joints using pin punch and hammer or screwdriver, then unhook the wood pegs on each component. You should now be able to move the sash back and forth freely, though it may require oil if it feels stiff.
With the sash in an open position Take a measurement of the sash chain to reach from the pulley at the top of the jamb to the sash slot on the bottom. Cut the cord/chain, and then secure it in Step 6 above. You can do this with a hammer, nails, or screws. However, nails are less likely than screws to cause damage.
If you don't have a kit that replaces the old counterbalance system it is recommended to keep the original balancing weights in place. They're not costly and are easy to install if purchased them at architectural salvage stores. Depending on the size of your window, two or three sash weights may be needed to keep the sash in an open position.