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Window Sash Repairs

Window sashes need to be inspected regularly for signs of mold, mildew and damage. You can reduce the cost of repairs in the future by catching these issues early, before they become out of control.

The sash is an interior framing that moves vertically up or down in windows that are open. This article will teach you how to make several easy repairs to your sash.

Weather Stripping

Wooden window sashes can give an elegant look to your home. They are also durable and last for a long time when they are maintained properly. However, they can become damaged or degrade over time due to exposure to elements and wear and tear. However, sash repair experts can bring your windows back to their original condition and maintain their appearance for much longer than newer replacement windows.

The first step to sash window repairs is addressing weather stripping, which can be found on both the sash as well as the frame. It can cause drafts if worn or loose. To fix it, begin by determining the brand of your window and the date on which the glass was manufactured (etched in the corner of the glass or on the aluminum spacer between panes). Then, remove the sash and mark its height and width, so you can find new weather stripping that matches.

Then, you can remove the sash from the holder and place it on flat surfaces to allow you to see all four sides. If the sash is double-hung, you'll also need to remove the weights and the ropes that go with them, which should have fallen into the pocket that was intended to be in the jamb liner. After you have removed the sash using the utility knife, remove the weather stripping from the old sash by hand or using the putty blade.

After the sash has been cleared and clean, you can put in the parting stops. They are long pieces of wood that are used to separate the two sashes. Pam prefers to use standard 1/2-inch by 3/4-inch upvc window repair trim from the lumberyard. However, you can also use a scrap piece of wood.

After removing the stopper for the parting and trimming it to length, apply a thin coat of glazing compound to the bottom of the sash. Smooth out the compound using your putty knife, and then let it dry for a minimum of a day. Once it's fully cured then 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 supports window sashes may wear out over time and use. This could lead to the window or door that is difficult to open or close. It's a good idea to know that replacing and repairing this hardware is often straightforward and cost-effective. If a sash is difficult to operate, try spraying some grease into the jamb channel and then open it to see if that fixes the problem. If the problem persists, it is most likely the sash balance. It is necessary to remove the window sash to access the hardware.

The ideal situation is for window sashes to be able to open and close with minimal effort but this can be a difficult task when the weights wear out or if the sash meeting rail isn't properly glazed. This issue could be caused by many factors that include an absence of maintenance or an unmatched weight rating.

If the hinges on windows begin to slide, this could cause the sash to drag, and then eventually to hit the frame in the opposite corner (Photo 1). To fix the problem ensure that the sash is centered in the frame opening, and then remove it. If the sash has been attached to the hinge arm, remove the hinge and replace it. (Photo 2). Install the new sash next (Photo 3).

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

To complete these repairs to the sash it is essential to have all the necessary tools in place before you begin. Mark the hinge channel's location on the frame (Photo 1) using a pencil. This will allow you to get the channel back in position correctly after you've completed. Then, remove the sash and remove the hardware, including the parting beads (Photo 2) and the cords or chains which hold it in place. A hot gun with nozzle shield and a medium setting can soften any putty that has been hardened. Remove the old sash and put it in a labeled bag.

Sash Weights

If your window sash repairs are to replace a broken cord or simply to ensure that the windows are functional by replacing worn out sash weights will improve sash operation and cut down on energy costs. Sash weights are composed of heavy iron or lead cylindricals that are contained inside a concealed cavity, and connected by ropes to the movable window sash. They provide counterbalance which allows the window to be opened and closed without the use of electrical or mechanical devices. The sash weights are often disregarded or disabled by homeowners, and are turned into scrap when they fail. Consequently you may have to find replacements.

A weight in a sash that has fallen out of the cavity is difficult to retrieve and you'll need to locate a new one that fits properly. You will also require a new piece string, a length of sashcord and a few sashpulleys to secure the new weights to the cord.

Mortise and Tenon joints are used to join old wood windows. The wood pegs that hold the parts together can be removed using the use of a pin punch and hammer. Most of them have an enormous diameter on one side and a smaller size on the other, so it is important to remove the smaller-diameter ones first. Later sashes used glue instead of pins. They can be separated by using a knife and mallets.

Once the sash has been released, you can remove sash stops and access the pockets for weights. This is usually done through an opening at the bottom of each jamb. The hole is then covered with an unfinished wooden panel that can be removed to reveal the inside workings.

When the sash has been shut off and the access panel is removed, you can remove the weight you used and replace it. Make sure you weigh the sash prior to you begin, as the weights that were previously used may be different sizes than what you require. Once the new weight is installed, tie a string to it and thread it through the pulley of the sash. Then attach the string to the frame, but only leave a few inches of string sticking out from the head for future adjustments.

Sash Cords

The majority of double-hung windows with a history include a chain or cord connected to the weights that keeps the sashes level within the jamb. As time passes, these cords can get damaged and make it impossible to raise windows. A new sash cable will give you the ability to raise and lower the sash and ensure it stays in place when it is opened.

To replace sash cords, the first step is to remove the access panels from the jambs. They are usually screwed or nailed in and need to be removed. It may be possible to take them out using an axe or hammer, but it is always best to lay out dust sheets prior to starting any work.

Once the access panel is removed, you can start working on the sash. Make the small parting beads (also known as "tie rails") out of their grooves using a chisel or flat bar. It's important to take your time, as these are often placed in a wedge or nail. If the sash is still in place, pull the mortise and tenon joints free with a hammer or screwdriver, then remove each wood peg. The sash should move freely, however it may need some lubrication in order to feel less stiff.

With the sash open, measure enough sash cord/chain to extend from the pulley at the top of the jamb to the sash slot in the bottom. Cut the cord/chain and then attach it in the previous step. You can use a hammer and screws or nails, however nails are less likely to cause damage.

It is recommended to keep the original weights in place unless you have purchased a kit that will replace the counterbalance. It's not expensive to buy these from salvage shops for architectural purposes and they'll be easy to install once you've got the sash unlocked. Based on the size and shape of your window, you might need to install one or Window Repairs two sashweights to keep it open.