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Window Sash Repairs
Window sashes need to be regularly checked for mold, mildew, and damage. By catching problems before they become serious you can save money on future repairs.
The sash is an interior frame that is vertically moved either up or down in windows that are open. This article will demonstrate how to do a variety of simple repairs to the sash.
Weather Stripping
Wooden window sashes can give a classic look to your home. They are also sturdy and last for a long time when they are maintained properly. However, they can be damaged or degrade as time passes because of exposure to the elements and wear and tear. However, sash repair experts 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 window damage is to fix weather stripping, which is found on both the sash as well as the frame. It can cause drafts if worn or loose. Begin by identifying the window brand and the manufacturer's date (etched on the corner of the glass, or the aluminum spacers between panes). Remove the sash, and mark its size and width so that you can find a new weather stripping that is compatible with the original.
Then, take it off and place it on a work surface so that you can reach all four sides. If your sash was double-hung, you must remove the ropes and weights that should have fallen into the pocket within the jamb lining. After removing the sash with the utility knife, you can remove the weather stripping that was left by hand or with the putty blade.
Once the sash is clear it is time to replace the parting stops. They are long pieces of wood that are used to separate the two sashes. Pam likes to replace them with standard 1/2-inch-by 3/4-inch window trim from the lumberyard, but you could also use scrap wood.
After removing the parting stops and trimming them to your desired length and thickness, apply a thin layer of glazing compound on the bottom of the sash. Smooth it out using your putty knife, then let it dry for a minimum of a day. Once the putty has fully cure, you can apply a topcoat of acrylic. This will help protect the putty and give your sash a modern appearance.
Sash Hardware
The hardware that supports the windows sashes can become worn out with time and use. This could lead to windows or doors that is difficult to open or close. The good news is that repairing and replacing this hardware is typically quite simple and inexpensive. If double glazing window repair is difficult to operate, try spraying some grease into the jamb channel, and then slide it open to see if this resolves the issue. If not, the issue is most likely due to the sash balance and you'll need to take out the sash to gain access to this hardware.
Window sashes should be able to open and close with minimal effort. However, this could be difficult if weights are worn out or the sash-to-rail connecting rail isn't covered with. This issue could be caused by many factors such as the lack of maintenance or an unmatched weight rating.
If the hinge arms of a window begin to slide, this could cause the sash's to drag and eventually strike the frame in the corner that's in the opposite direction of the hinge arm (Photo 1). To fix the problem make sure the sash is in the proper position within the frame's opening and take it off. If the sash has been screwed onto the hinge arm, unbolt the hinge and replace it. (Photo 2). Install the new sash (Photo 3).
Due to sagging hinges, and a general lack in energy efficiency, old windows particularly those in older homes, can be difficult to open and close. In most cases, a few simple repairs can transform these windows into smooth operation again and save the homeowner cash on energy costs.
It is crucial to have the tools you require before you start. Mark the hinge channel location on the frame (Photo 1) using pencil. This will allow you to place the channel in the proper location after you've completed. Remove the sash and take out all the hardware, including the beads for parting, cords, and chains that hold the sash in place. Soften any hardened putty using the help of a heat gun set at medium and fitted with an nozzle shield. Remove the old sash, and store it in an labelled bag.
Sash Weights
Whether your window sash repairs are to replace a broken cord or simply to keep your windows functioning by replacing worn out sash weights will improve sash operation and cut down on the energy cost. Sash weights consist of heavy lead or iron cylinders that are encased in a hidden cavity and attached by ropes to the moveable window sash. These weights function as counterbalances, allowing you to open and close the window without having to use mechanical or electrical devices. The sash weights are usually neglected or ignored by homeowners, and are turned into scrap when they fail. Consequently you might need to locate replacements.
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 need a new piece of string, a length of sash cord, and a few sash pulleys that will tie the new sash weights the sash cord.
Older wood windows are joined by mortise and tenon joints. Pin punch and hammer can be used to cut off the wood pegs that hold the parts together. Most of them have large diameters on one side and a smaller size on the other, so it is important to remove the smaller-diameter ones first. Sashes that were made later in the century used glue instead of pegs. They can be separated by cutting the glue line using a knife, then tapping the mortised area loose with mallets.
After the sash has been removed, you can remove the sash stop and access the weight pocket. Usually, this is done through an opening at the bottom of each jamb. The hole is then covered with the wooden panel which can be removed to reveal the interior workings.
After you have the sash stopped and the access panel removed, you will be able to remove the weight of the old sash and replace it with new. Make sure you weigh the sash before you do this, since the old weights may be different sizes than what you require. After the new weight is installed, you can thread the string through the sash pulling mechanism. Then, attach the string to the boxed frame. Leave a few inches of space at the end of the string to allow for future adjustments.
Sash Cords
The majority of double-hung windows with a history come with a chain or cord connected to the weights that helps keep the sashes in balance in the jamb. Over time, these cords could break, making it difficult to raise the window. A new sash cord will restore the ability to move the sash up and down and will keep it in its position when it is opened.
The first step to replace sash cords is to find and remove the access panels in the jambs. They are typically screwed or nailed into and need to be removed. You may be able to employ a hammer and chisel for removing them but it's best to lay down dust sheets prior to starting any work.
After you have removed the access panel, you are able to begin working on the sash. Utilize a flat bar or chisel, to pry the small parting beads out of their grooves. These are often wedged in or nailed in, but they can be snipped out, so it's worth taking your time. If the sash is in place, pry out the mortise and tenon joints using pin punch and hammer or screwdriver, and then take out the wood pegs on the components. The sash should move around freely now, however it may require some lubrication in order to feel less stiff.
Determine the length of sash chain/sash cord required to reach the sash slot on the bottom of the pulley at the top of the jamb. Cut the chain or cord, and then attach it as described in the step 6 above. You can use either nail, hammer 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's best to keep the original balancing weights in place. They're not costly and simple to install if you buy them from architectural salvage stores. Depending on the size of your window, two or three sash weights may be needed to keep it open.
