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Window Sash Repairs

Window sashes need to be checked regularly for mold, mildew and damage. If you catch these issues early you will save money on future repairs.

The sash is the internal framing that moves vertically upwards or downwards in windows that open. This article will show you how to do simple repairs to sash.

Weather Stripping

Wood window sashes provide a classic aesthetic to your home. If properly maintained, can last for many years. However, they may become damaged or deteriorate as time passes because of exposure to the elements and normal wear and wear and tear. Sash repair specialists can restore windows to their original state and keep them looking great much longer than replacement windows.

The first step for sash window repairs is addressing weather stripping. It's found on both the sash as well as the frame. It could cause drafts if worn or loose. To fix it, begin by determining the brand of your window and glass manufacturer date (etched in the corner of the glass or on the aluminum spacer between panes). Then, take the sash off and mark its width and height, so you can find the appropriate weather stripping replacement to match.

Next, remove the sash and place it on a table so that you can reach all four sides. If the sash is double-hung, take out the ropes and weights that should be buried within the jamb lining. After removing the sash using the utility knife, take off the old weather stripping by hand or with a putty blade.

After the sash has been cleaned, you can replace the parting stops. These are long pieces wood that are used to separate the two sashes. Pam prefers to replace them with standard 1/2-inch by 3/4-inch window trim from the lumberyard, but you can also use scrap wood.

After removing the stoppers for parting and trimming them to your desired length, apply a thin layer of glazing compound to the bottom of the sash. Smooth it out using your putty knife, and then let it dry for a minimum of a day. After it has fully dried, apply a top coat of acrylic latex paint. This will help protect the putty, and give your sash a fresh look.

Sash Hardware

The hardware that supports the window sashes may wear out over time and use. This can result in windows or doors that is difficult to open or close. It's good to know that replacing and fixing this hardware is usually straightforward and cost-effective. If a sash becomes difficult to operate, try spraying some grease into the jamb channel, and then slide it open to see if it solves the issue. If the problem persists it's likely the sash balance. It is necessary to take off the window sash to get access to this part of the hardware.

Sashes for windows should be able to open and close with little effort. However, this may be a challenge if the weights have been worn out or the sash connecting rail isn't properly coated. This problem can be caused by a number of factors, including the lack of maintenance or a mismatched weight rating for the specific window sash.

If the hinge arms of a window are starting to slide, this could cause the sash's to drag and eventually strike the frame in the corner directly opposite the hinge arm (Photo 1). To remedy the issue ensure that the sash is in the proper position within the frame opening and then remove it. If the sash is secured to the hinge arm, you'll have to remove the hinge arm and replace it (Photo 2). Then, put in the new sash (Photo 3).

Windows that are old, especially in older houses, can be difficult to close and open due to sagging hinges and general lack of energy efficiency. In most instances, a few minor repairs can transform these windows into smooth operation and save homeowners money on energy bills.

It is crucial to have the tools you require before you start. Mark the hinge channel location on the frame (Photo 1) using pencil. This will allow you to put the channel in the proper location after you've completed. Then, remove the sash, and then remove the hardware including the beads that separate (Photo 2) and the chains or cords that hold it in place. Heat gun with nozzle shield and medium setting will soften any hardened glue. Take off the old sash and store it in an labelled bag.

Sash Weights

Whether your window repairs sash repairs are to replace a broken cord or just to keep the windows functional, replacing worn out weights for sash will improve its operation and help reduce energy consumption. Sash weights consist of heavy iron or lead cylinders that are enclosed in a concealed cavity and connected by a rope to the movable window sash. These weights function as counterbalances, which allows you to open and shut the window without having to use mechanical or electrical devices. The sash weights are usually ignored or discarded by homeowners, and are turned into scrap when they fail. Consequently you may have to locate replacements.

A sash weight that has fallen out of the cavity is difficult to get back, so you will want to find a new one that fits correctly. You will also require a new piece of string, a length sash cord, and a few sash pulleys to tie the new sash weights the sash cord.

Mortise and Tenon joints can be used to join older wood windows. The wood pegs holding the components together can be removed using the use of a pin punch and hammer. The majority of them are large on one side and smaller on the other. It is important to first remove the smaller diameter sides. Sashes that were made later in the century used glue instead of pegs and can be separated by cutting through the glue line with an instrument, and then tapping the mortised section loose with a mallet.

After the sash is removed, you can take off the sash stops and gain access to the pockets for weights. This is usually done through a small hole at the bottom of every jamb. The hole is surrounded by an unfinished wooden panel that can be removed to reveal the inside workings.

After the sash has been stopped and the access panel has been removed, you can take off the weight you used and replace it. Be sure to weigh the sash first, as the weights you have might not be the right size. After the new weight is installed, you can thread the string through the sash pulling mechanism. Then, you can attach the string to your boxed frame. Leave a few inches protruding at the top of the string for future adjustments.

Sash Cords

In most old double-hung window, a cord or chain is affixed to the weights. This supports and keeps the sashes of the jamb balanced. As time passes, these cords can get damaged and make it difficult to raise windows. A new sash cord can restore the ability to move the sash upwards and downwards and keep it in place when opened.

To replace sash cords, the first step is to remove the access panels from the jambs. They are typically fixed or screwed in and will require to be removed or repositioned. It may be possible to take them out using an axe or hammer, however, it is best to lay out dust sheets before beginning any work.

Once the access panel is removed, you can begin working on the sash. Make the small parting beads (also known as "tie rails") out of their grooves with the chisel or flat bar. It is essential to take your time, as these are often wedged or nailed in place. If the sash remains in place, break the mortise-and tenon joints using a hammer or screwdriver and then take out each wood peg. The sash should be able move freely now, but it might require some lubrication to feel less stiff.

Determine the length of the sash chain or sash cord needed to reach the sash slot at the bottom of the pulley on the top of the jamb. Cut the cord/chain and then attach it as described in the previous step. You can use either a hammer, nails or screws. 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. It's not expensive to buy these from salvage shops for architectural purposes and they'll be simple to install once you've got the sash open. Depending on the size and shape of your window, you may need to use one or two sashweights to keep the sash open.