Window Sash Repairs
Check the windows sashes regularly for signs of damage, mildew and mold. You can reduce future repair costs by catching problems early on, before they get out of hand.
The sash is an interior framing that moves vertically upwards or downwards in windows that are open. This article will show you how to carry out a few simple repairs to sash.
Weather Stripping
Wooden window sashes can give a classic look to your home. They are also durable and can last many years provided they are properly maintained. They can, however, become damaged or degraded with time, due to exposure and normal wear. Sash repair specialists can restore windows back to their original condition and maintain their beauty longer than replacement windows.
The first step for sash window repairs is addressing weather stripping, which is found on both the sash as well as the frame. If it's worn or loose, out, it can lead to drafts and other problems. Start by identifying the window's brand and the manufacturer's date (etched on the corner of the glass or on the aluminum spacers between panes). Remove the sash and mark its width and height so you can get new weather stripping that is compatible with the original.
Then, remove the sash and set it on a work surface to allow access to all four sides. If your sash is double-hung, you'll need to take off the weights and their ropes which should have slipped into the pocket that was intended to be in the jamb liner. After you have removed the sash using the utility knife, take off the weather stripping from the old sash by hand or with the putty blade.
After the sash has been cleared, you can install the parting stops. These are long pieces of wood that are used to separate the two sashes. Pam prefers to use the standard 1/2-inch by 3/4 inch window trim from the lumberyard. However, you could also substitute a scrap piece of wood.
After removing the stoppers for parting and cutting them to the desired length then apply a thin layer of glazing compound to the bottom of the sash. Smooth out the compound using your putty knife and let it dry for a minimum of a day. Once the putty has fully cure it is possible to apply a topcoat of acrylic latex. This coating will protect the putty and give your sash a new look.
Sash Hardware
The hardware that supports window sashes can wear out with time and use. This could result in a door or a window that is difficult to open or close. It's important to know that replacing or repairing this hardware is often straightforward and cost-effective. If you are having trouble opening a sash, spray some oil into the jamb channel. Then, you can slide the sash out to see if this resolves the issue. If the problem persists, it is most likely the sash balance. You'll need to take off the window sash in order to get access to this part of the hardware.
Sashes for windows should be able to open and close without much effort. However, this can be difficult if weights are worn out or the sash-to rail meeting rail is not properly coated. This issue could be caused by a number of things, such as the lack of maintenance or an incorrect weight rating for a particular window sash.
If the hinge arms of a window are starting to sag, this can cause the sash to drag and eventually strike the frame in the corner opposite the hinge arm (Photo 1). To remedy the issue ensure that the sash is centered in the frame's opening and remove it. If the sash was screwed onto the hinge arm, take it off the hinge and replace it. (Photo 2). Next, install the new sash (Photo 3).
Because of sagging hinges and a general lack in energy efficiency, older windows especially in older homes, may be difficult to open and close. In most cases, a few simple repairs can turn these windows into smooth operators for the first time and save the homeowner cash on energy costs.
It is essential to have the tools you require before you start. Mark the hinge channel's location on the frame (Photo 1) with a pencil. This will help you get the channel back on position correctly after you've completed. Then, remove the sash and remove the hardware including the parting beads (Photo 2) and the chains or cords that secure it. Heat gun with nozzle shield and a medium setting will soften any hardened putty. Take off the old sash and put it in a labeled bag.
Sash Weights
If your window sash repairs are to replace a damaged cord or simply to ensure that the windows are functional by replacing worn out weights on sash can improve sash operation and reduce energy costs. Sash weights are hefty lead or iron cylinders that are enclosed in a hidden cavity and linked to the moveable window sash using rope. They are counterbalancers that allows the window to be closed and opened without the use of electrical or mechanical devices. If they fail, sashweights are usually ignored or disabled by homeowners.
It's difficult to retrieve an sash-weight which has fallen from the cavity, so you'll want to find one that is suitable for the. You will also require a new piece of string, a length sashcord and some sashpulleys to tie the weights you are replacing to the cord.
Mortise and Tenon joints are used to join older wood windows. Pin punch and hammer can be used to remove the wood pegs holding the components together. The majority of them have a large diameter on one side and a smaller size on the other, so it is essential to remove the smaller-diameter sides first. Later sashes used glue instead of pins. They can be cut by using a knife or a mallet.
Once the sash is freed, you can remove the sash stop and access the weight pocket. Usually this is accomplished by drilling an opening in the bottom of each jamb. The hole is then covered with an unfinished wooden panel that can be removed to reveal the inside workings.
After the sash has been stopped and the access panel removed, you'll be able to take off the old sash weight and replace it with the new. Be sure to weigh the sash before you do this, as the weights that were previously used may be a different size than the one you need. After the new weight has been installed, you can thread the string through the sash pulling mechanism. Then, you can nail the string to the boxed frame, but only leave a few inches of string hanging from the head for future adjustments.
Sash Cords
In the majority of double-hung windows, a chain or cord is connected to the weights. This helps keep the sashes within the jamb in a balanced manner. Over time these cords can 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.
To replace sash cords, the first step is to remove the access panels from the jambs. These are usually attached by nails or screws and require removal. You could use a hammer or chisel for removing them, but it's always better to lay down dust sheets before starting any work.
After the access panel has been removed, you can start working on the sash. Utilize a flat bar or chisel, to pry the narrow parting beads from their grooves. These are often wedged in or nailed but can be snipped out and it's worth your time. If the sash is in place, pry out the mortise and tenon joints using the help of a hammer and pin or screwdriver, and then take out the wood pegs attached to each piece. You should be able to move the sash around freely, though it might require oil if it feels stiff.
Take a measurement of the length of sash chain/sash cord needed to reach the sash slot on the bottom from the pulley at the top of the jamb. Cut the cord or chain and then secure it in Step 6 above. You can either employ a hammer, screws or nails, however nails are less likely to cause damage.
It is best to keep the original weights in place unless you have purchased a kit to replace the old counterbalance. They are not expensive and simple to install if you purchase them at architectural salvage stores. Depending on the size of your window two or three sash weights might be required to keep it open.