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Window Sash Repairs
Sashes for windows must be inspected regularly for signs of mold, mildew, and damage. You can save future repair costs by catching these issues early, before they become too much.
The sash is an internal frame that moves up and down vertically in windows that are open. This article will teach you how to perform several simple repairs to the sash.
Weather Stripping
Wooden window sashes are a great way to add a classic look to your home. They are also sturdy and will last for many years provided they are properly maintained. However, they can become damaged or degrade over time due to exposure to the elements and wear and wear and tear. Sash repair experts can restore windows back to their original condition and keep them looking great much longer than replacement windows.
The first step in sash window repairs is addressing weather stripping, which is found on both the sash as well as the frame. It could cause drafts if worn or loose. To fix it, start by determining the brand of your window and the date of manufacture for the glass (etched in the corner of the glass or on the aluminum spacer between panes). Remove the sash and mark its width and height so that you can get replacement weather stripping that matches.
Then, 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 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 old weather stripping at the corners. Then, take it off by hand or using a putty knife.
After the sash has been cleared, you can replace the parting stops. These are long pieces that separate the sashes. Pam likes to replace these with standard 1/2-inch-by 3/4-inch window trim from the lumberyard, however you can also use a piece of scrap wood.
After removing the parting stop and trimming it to length and then apply a thin layer of glazing compound over the bottom of the sash. Smooth the compound using a putty tool, and let it dry for at least a day. After it has fully dried, apply a top coat of acrylic latex paint. This will protect the putty and give your sash a fresh look.
Sash Hardware
The hardware that holds the window sashes may wear out with time and use. This could result in windows or doors that is difficult to open or close. It's a good idea to know that replacing or repair of this hardware is typically easy and affordable. If a sash is difficult to operate you can try spraying some oil 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 balance of the sash and you'll need to remove the sash to access the hardware.
Ideally, window sashes should be able to open and close with very little effort, but this can be an issue when the weights are worn or if the sash's meeting rail isn't properly coated. This issue can be due to many factors such as a lack of maintenance and a mismatched weight rating.
If the hinges on the window begin to move, this can cause the sash drag and eventually hit against the frame at the opposite corner (Photo 1). To correct the issue make sure the sash is aligned in the frame opening and then remove it. If the sash has been screwed onto the hinge arm, remove the hinge and replace it. (Photo 2). Then, you can install the new sash (Photo 3).
Old windows, particularly those in older homes, can be difficult to close and open due to sagging hinges and general lack of energy efficiency. In most cases, a few simple repairs can transform these windows into smooth operation again and save the homeowner money on energy bills.
In order to make these repairs to sash it is important to have all of the necessary tools lined up before you begin. Start by marking the location of the hinge channel on the frame using pencil (Photo 1). This will make it easier to place the channel in the correct location after you've completed. Take the sash off and then remove all hardware including the parting beads, cords, and chains that hold the sash in place. Heat gun with nozzle shield and medium setting will soften any putty that has been hardened. Remove the old sash, and put it in a labelled bag.
Sash Weights
Whether your window sash repairs are to replace a broken cord or just to keep your windows functioning by replacing worn out sash weights will improve sash operation and reduce energy costs. Sash weights are made of heavy lead or iron cylindricals that are contained in a concealed cavity and are connected via ropes to the movable window sash. They provide counterbalance which allows the window to be opened and closed without using mechanical or electrical devices. If they fail, sashweights tend to be ignored or disabled by homeowners.
A weight in a sash that has fallen out of the cavity is difficult to retrieve It is therefore important to locate a new one that fits properly. 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 to the sash cord.
Older wood windows are joined with mortise and tenon joints. Pin punch and hammer can be used to remove the wood pegs holding the components together. The majority of these pegs are large on one side, but smaller on the other. It is essential to remove first the smaller diameter sides. Later sashes used glue instead of pins. They can be separated by using a knife or mallets.
After the sash is removed, you can remove the stopper on the sash and get access to the weight pocket. This is usually done through a small hole in the bottom of each jamb. This hole is covered by an access panel made of wood which can be removed to allow you to view the inside of the frame.
After you have the sash stopped and the access panel removed, you'll be able to take off the weight from the sash and replace it with the new. Be sure to weigh the sash prior to you do this, since the old weights may be a different size than the one you need. Once the new weight has been installed, thread an appropriate length of string through the pulling mechanism. Then nail the string to the frame, but only leave a few inches of string protruding from the head to allow for future adjustments.
Sash Cords
In the majority of old double-hung windows the chain or cord is connected to the weights. This helps keep the sashes of the jamb in a balanced manner. Over time, these cords could break, making it difficult to raise the window. A new sash cable will give you the ability to move and lower the sash and keep it in position when opened.
The first step to replace cords for sash is to locate and remove the access panels in the jambs. They are typically installed by screws or nails and must be removed or moved. You might be able to use a hammer or chisel to remove them, but it's always better to lay down dust sheets prior to commencing any work.
After the access panel has been removed, you can begin working on the sash. Prise the narrow parting beads (also known as "tie rails") out of their grooves using flat bar or chisel. It is essential to take your time, as these are often placed in a wedge or nail. If the sash remains in place, pry out the mortise and tenon joints with a hammer and pin punch or screwdriver, then remove the wood pegs on the components. You should now be able to move the sash around without difficulty, though it might require oil if it feels stiff.
With the sash open Take a measurement of the sash chain to extend from the pulley in the top of the jamb to the sash slot at the bottom. Cut the chain or cord and attach it in the previous step. You can employ a hammer and screws or nails, however nails are less likely to cause damage.
Unless you've bought an item that replaces the old counterbalance system, it's best to keep the original balancing weights in place. They're not expensive and simple to install if you buy them from salvage shops for architectural use. Based on the dimensions and shape of your window, you might need to install one or two sashweights in order to keep the sash open.
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