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Window Sash Repairs

Window sashes must be inspected regularly for signs of mold, mildew and damage. You can save future repair costs by catching these issues early on, before they become too much.

The sash is an inside frame that moves upwards and downwards in windows that open. This article will teach you how to do easy repairs to your sash.

Weather Stripping

Wood window repair sashes add an elegant look to your home. When properly maintained, can last for years. They can, however, be damaged or degraded over time, due to exposure and normal wear. Sash repair specialists can restore windows to their original condition and maintain their beauty longer than replacement windows.

The first step to repair sash window damage is to fix weather stripping, fitters which can be found on both the sash as well as the frame. If it's worn or loose, out, it can cause drafts and other issues. To fix it, begin by finding your window brand and glass manufacturer date (etched in the corner of the glass or on the aluminum spacer between panes). Then, remove the sash and mark its width and height, so you can find new weather stripping that matches.

Then, you can remove the sash from its holder and place it on a flat surface to allow you to see all four sides. If the sash is double-hung, you'll have to remove the weights as well as their ropes, which should have fallen into the intended pocket in the jamb liner. After you have removed the sash using the utility knife, take off the weather stripping that was left by hand or using the putty blade.

After the sash is cleaned, you can replace parting stops. These are long pieces that divide the sashes. Pam prefers to use standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. But, you can also substitute a scrap piece of wood.

After removing the stopper and trimming it to length and then apply a thin layer of glazing compound over the bottom of the sash. Smooth the compound with your putty knife and let it dry for a minimum of a day. When it's completely dried and dried, apply a second coat of acrylic latex paint. This will protect the putty and give your sash an updated appearance.

Sash Hardware

The hardware that supports the window sashes may wear out over time and with use. This could result in windows or doors that is difficult to open or close. The good thing is that fixing and replacing this hardware is typically quite simple and inexpensive. If a sash isn't easy to operate try spraying grease into the jamb channel, and then slide it open to see if that solves the issue. If not, the issue is most likely due to the balance of the sash and Fitters you'll need to remove the sash to gain access to this hardware.

Ideally, window sashes should move open and shut with minimal effort however, this can be difficult when the weights wear out or if the sash's meeting rail isn't properly glazed. This issue can be due to many factors, including the lack of maintenance or a mismatched weight rating.

If the hinge arms of a window are beginning to sag, this can cause the sash to drag and eventually land on the frame in the corner that's in the opposite direction of the hinge arm (Photo 1). To remedy the issue, make sure that the sash is aligned in the frame opening and then remove it. If the sash has been screwed to the hinge arm, you'll need to remove the hinge arm and replace it (Photo 2). Install the new sash (Photo 3).

Due to hinges that are sagging, and a general lack of energy efficiency, windows that are old, especially those in older homes, can be difficult to open and close. In many cases just a few easy fixes can allow these windows to operate smoothly again and save homeowners money on energy bills.

It is essential to have the tools you require before you start. Begin by marking the location of the hinge channel on the frame using pencil (Photo 1). This will help you to position the channel in the correct position after you've finished. Then, remove the sash and fitters remove the hardware including the parting beads (Photo 2) and the cords or chains that secure it. Soften any hardened putty using a heat gun set to medium and fitted with a shield for the nozzle. Remove the old sash and place it in a labelled bag.

Sash Weights

Whether your window sash repairs are to replace a broken cord or simply to keep the windows functional by replacing worn out weights for sash will improve its operation and cut down on energy consumption. Sash weights are composed of iron or lead cylinders that are enclosed in a hidden cavity and attached by a rope to the movable window sash. These weights act as counterbalances, which allows you to open and close the window without having to use mechanical or electrical devices. If they fail, sashweights are usually left unnoticed or disabled by homeowners.

It's not easy to retrieve an sash-weight which has fallen from the cavity, so you'll need to find one that fits correctly. You will also require a fresh piece of string, a length of sashcord and a few sashpulleys for tying the new weights to the cord.

Older wood windows are joined with mortise and tenon joints. The wood pegs that keep the parts together can be removed by a pin punch and hammer. The majority of these pegs are big on one side, and smaller on the other. It is important to first remove the smaller diameter sides. Later sashes utilized glue instead of pins. They can be cut by using a knife or a mallet.

Once the sash is freed and removed, you can take off the stopper on the sash and get access to the weight pocket. This is usually done via a small hole at the bottom of each jamb. This hole is covered with a wooden panel that can be removed to reveal the inside workings.

Once the sash is stopped and the access panel is removed, you can remove the weight that was previously installed and replace it. Be sure to weigh the sash before you begin, as the weights that were previously used may be different in size from what you require. Once the new weight is installed, thread the string through the sash pulling mechanism. Then, you can nail the string to the frame, but leave a few inches of string protruding from the head for future adjustment.

Sash Cords

Most double-hung windows of the past come with a chain or cord attached to the weights that keeps the sashes balanced in the jamb. As time passes, these cords may become damaged and make it difficult to raise windows. A new sash cord will restore the ability to move the sash up and down and will keep it in its place when opened.

To replace sash cords, the first step is to remove the access panels from the jambs. These are usually screwed or nailed into and require removal. You may be able to use a hammer and chisel for removing them but it's best to lay down dust sheets before beginning any work.

After you have removed the access panel, you can begin working on the sash. Utilize a flat bar, or chisel to pry the tiny partsing beads out of their grooves. It is essential to be patient as they're often placed in a wedge or nail. If the sash is in place, pry out the mortise and the tenon joints by using a hammer and pin punch or screwdriver, then remove the wood pegs on each piece. The sash should be able to move freely, however it may need some lubrication to feel less stiff.

With the sash in an open position Take a measurement of the sash chain to extend from the pulley on the top of the jamb to the sash slot on the bottom. Cut the chain or cord and attach 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.

Unless you've bought an item that replaces the old counterbalance system it's best to keep the original balancing weights in place. It's not expensive to buy these from salvage shops for architectural purposes and they'll be easy to install once you have the sash unlocked. Depending on the size of your window one or two sash weights might be required to keep it open.