A Guide To Window Sash Repairs From Start To Finish

Window Sash Repairs
Regularly inspect the window sashes for damage, mildew, and mold. By catching these problems early you will save money on repairs in the future.
The sash is an internal frame that is able to move upwards and downwards in windows that are open. This article will demonstrate how to perform several simple repairs to sash.
Weather Stripping
Wooden window sashes are a great way to add a classic look to your home. They are also durable and will last for many years provided they are properly maintained. However, they may become damaged or deteriorate over time due to exposure to elements and wear and tear. Thankfully, sash repair experts can restore your windows back to their original condition and keep them looking great for much longer than newer replacement windows.
The first step to repair sash window damage is to fix weather stripping, which can be found on both the sash as well as the frame. It could cause drafts if worn out or loose. Start by identifying the brand of window and the manufacturer's date (etched on the corner of the glass, or the aluminum spacers between panes). Remove the sash, and mark its width and height so that you can get new weather stripping that is compatible with the original.
Then, you can remove the sash from the holder and place it on a flat surface to allow you to access all four sides. If your sash is double-hung, you'll need to take off the weights and the ropes that go with them which should have slipped into the intended pocket in the jamb liner. After you have removed the sash using the utility knife, remove the weather stripping that was left by hand or with the putty blade.
After the sash is cleared, you can install the stoppers that separate the two sashes. These are long pieces wood that separate the two sashes. Pam prefers standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. However, you can also substitute a scrap piece of wood.
After removing the parting stops and trimming them to your desired length 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 a minimum of a day. After it has fully dried then apply a top coat of acrylic latex paint. This will protect the putty, and give your sash an updated look.
Sash Hardware
The hardware that holds the window sashes can 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 and repairing this hardware is often simple and inexpensive. If a sash isn't easy to operate, try spraying some grease into the jamb channel and then slide it open to see if that solves the issue. If not, the issue is likely to be with the sash balance and you'll need to remove the sash to access the hardware.
Window sashes need to be able to open and close with minimal effort. However, this may be a challenge if the weights have been worn out or the sash connecting rail isn't properly coated. This can be due to various reasons such as an absence of maintenance or an unmatched weight rating.
If the hinge arms of a window are beginning to lose their elasticity, this could cause the sash to drag and eventually land on the frame in the corner directly opposite the hinge arm (Photo 1). To remedy the issue ensure that the sash is aligned in the frame opening, and then take it off. If the sash was screwed onto the hinge arm, unbolt the hinge and replace it. (Photo 2). Install the new sash (Photo 3).
Windows that are old, especially in older homes, may be difficult to open and close, because of sagging hinges and an overall lack of energy efficiency. In many instances, a few minor repairs can transform these windows into smooth operation again and save the homeowner money on energy costs.
It is essential to have the tools you require before you begin. Mark the location of the hinge channel on the frame (Photo 1) with a pencil. This will allow you to get the channel back in place correctly when you're finished. Remove the sash and then remove all hardware including the parting beads, cords, and chains that help to hold the sash. The nozzle shield of the heat gun and a medium setting will soften any hardened glue. Take off the old sash and keep it in a bag labeled.
Sash Weights
No matter if your window sash repair needs are to replace a broken cord or simply to ensure that the windows are functional by replacing worn out weights for sash will improve its operation and reduce the energy cost. Sash weights are heavy, lead or iron cylinders, which are enclosed in a hidden cavity and linked to the moveable the sash with a rope. These weights act as counterbalances and allow you to open and shut the window without having to use mechanical or electrical devices. The sash weights are often disregarded or disabled by homeowners, and are turned into scrap when they fail. Consequently, you may need to locate replacements.
A weight in a sash that has fallen out of the cavity is difficult to retrieve and you'll need to find a new one that fits correctly. You will also require a new piece of string, a length sashcord and some sashpulleys to tie the new weights to the cord.
Mortise and Tenon joints are used to join windows made of older wood. The wood pegs that hold the components together can be removed by pin punches and hammers. The majority of these pegs are large on one side, and smaller on the other. It is essential to first remove the smaller diameter sides. Sashes made later in the century used glue instead of pegs and can be separated by cutting the glue line using the help of a knife, and then tapping the mortised area loose with a mallet.
After the sash is released, you can remove sash stops and access the weight pockets. This is typically done by drilling a small hole in the bottom of each jamb. The hole is then covered with an access panel of wood that can be cut off so that you can observe the inner workings of the frame.
After you have the sash stopped and the access panel removed, you will be able to take off the weight of the old sash and replace it with the new. Make sure you weigh the sash prior to you do this, as the weights that were previously used 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 nail the string to the boxed frame, leaving a few inches of string sticking out from the head to allow for future adjustments.
Sash Cords
Most double-hung windows of the past come with a chain or cord connected to the weights that supports and keeps the sashes in balance within the jamb. Over time, these cords can get damaged and make it difficult to raise the windows. A new sash cord will give you the ability to move the sash upwards and downwards and hold it in place when it is opened.
The first step in replacing sash cords is to locate and remove the access panels within the jambs. They are usually screwed or nailed into and need to be removed. You may be able to use a hammer or chisel for removing them however, it is always best to lay down dust sheets prior to beginning 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 tiny parting beads from their grooves. It is important to take your time as they're often wedged or nailed in place. If the sash remains in place, pull the mortise and tenon joints free with a hammer or screwdriver and then take out each wood peg. The sash should move around freely now, however it might require some lubrication in order to feel less stiff.
With the sash open With the sash in an open position, measure the sash chain or cord to reach from the pulley in the top of the jamb to the sash slot on the bottom. Cut Continue or chain and secure it as in Step 6 above. You can use either a hammer, nails or screws. However nails are less likely to cause damage.
It's best to leave the original weights if you have purchased a kit that will replace the old counterbalance. They are not expensive and simple to install if purchased them from architectural salvage stores. Depending on the size of your window, one or two sash weights may be needed to keep it in an open position.