Window Sash Repairs

Make sure to check the sashes of your windows regularly for damage, mildew, and mold. If you catch these issues early you can save money on future repairs.

The sash is the interior framing that moves vertically either up or down in windows that are open. This article will demonstrate how to do a variety of simple repairs to the sash.

Weather Stripping

Wooden window sashes are a great way to add an elegant look to your home. They are also durable and last for a long time provided they are properly maintained. However, they can be damaged or deteriorate over time due to exposure to the elements and normal wear and wear and tear. Sash repair specialists can restore windows back to their original condition and maintain their appearance longer than replacement windows.

The first step for repair sash windows is to address weather stripping. It's found on both the sash and frame. It could cause drafts if worn out or loose. Start by identifying the window's brand and the manufacturer's date (etched on the corner of the glass, or the aluminum spacers between panes). Remove the sash, and mark its size and width so that you can purchase replacement weather stripping that matches.

Then, you can remove the sash from its holder and place it on an even surface that allows you to access all four sides. If your sash is double-hung, you'll also need to remove the weights and their ropes that should have fallen into the intended pocket in the jamb liner. Once you've taken the sash off using a utility knife, you can use it to remove the weather stripping from the corners. Then, take it off by hand or using a putty blade.

Once the sash is clear and clean, you can put in the parting stops. These are long pieces that split the sashes. Pam likes to replace them with standard 1/2-inch-by - 3/4-inch window trim from the lumberyard. However, you could also use a piece of scrap wood.

After removing the parting stops and trimming them to your desired length and thickness, apply a thin layer of glazing compound over the bottom of the sash. Smooth the compound with your putty knife, then let it dry for a minimum of a day. Once the putty has fully cure and dried, you can apply an acrylic latex topcoat. This will protect the putty and give your sash a fresh look.

Sash Hardware

The hardware that supports window sashes is prone to wearing out from time and usage and the result could be a door or window that isn't able to open or close easily. The good news is that repairing and replacing this hardware is generally relatively easy and affordable. If you're having trouble opening the sash, spray some oil into the jamb channel. Then slide the sash out to see if this resolves the problem. If not, the issue is likely to be with the sash balance and you'll need to take out the sash to gain access to this hardware.

Ideally, window sashes should be able to open and close with very little effort, however, this can be a difficult task if the weights become worn or if the sash that joins rail isn't properly glazed. This issue can be caused by a number of reasons, such as the lack of maintenance or a mismatched weight rating for the specific window sash.

If the hinge arms of a window repairs begin to sag, this can cause the sash to slide and eventually hit the frame in the corner that's opposite the hinge arm (Photo 1). To resolve this problem, first ensure that the sash is squarely inserted into the frame's opening and then remove it from the window. If the sash was screwed onto the hinge arm, remove the hinge and replace it. (Photo 2). Then, you can install the new sash (Photo 3).

Old windows, especially those in older houses, can be difficult to open and close because of sagging hinges and a general lack of energy efficiency. In most instances, a few easy repairs can transform these windows into smooth operators again and save the homeowner money on energy costs.

It is essential to have the tools you require before you start. Mark the location of the hinge channel on the frame (Photo 1) with pencil. This will help you get the channel back into position correctly after you've completed. Remove the sash, and remove all the hardware, including the beads for parting cords, chains, and cords that help to hold the sash. The nozzle shield of the heat gun and a medium setting can soften any hardened putty. Remove the old sash and put it in a bag that is labeled.

Sash Weights

Sash weights can be replaced to improve the operation of your window sash and reduce the energy cost. Sash weights are heavy lead or iron cylinders, which are enclosed in a hidden cavity and connected to the movable sash by rope. They provide counterbalance, allowing the window repair to be closed and opened without the use of electrical or mechanical devices. If they fail, sashweights are often ignored or disabled by homeowners.

A sash weight that has fallen out of the cavity is difficult to recover, so you will want to locate a new one that fits correctly. You will also require a new piece of string, a length of sashcord and a few sashpulleys for tying the weights you are replacing to the cord.

Mortise and Tenon joints are used to join windows made of older wood. Pin punch and hammer can be used to cut off the wood pegs that hold the components together. Most of them have large diameters on one side and a smaller size on the other, so it is important to remove the smaller-diameter sides first. Sashes made later in the century used glue instead of pegs. They can be separated by cutting the glue line with the help of a knife, and then tapping the mortised part loose using mallets.

After the sash is released, you can remove sash stops and gain access to the pockets for weights. Usually, this is done through a hole near the bottom of each jamb. This hole is then covered by an access panel of wood that can be ripped off to allow you to see the inner workings of the frame.

After the sash has been stopped and the access panel has been removed, you can remove the weight you used and replace it. Be sure to weigh the sash before you do this, as the old weights may be different in size from the one you need. Once the new weight is installed then tie a string to it and thread it through the sash pulley. Then nail the string to the frame, leaving a few inches of string protruding from the head for future adjustments.

Sash Cords

In the majority of old double-hung windows the chain or cord is attached to the weights. This keeps the sashes in the jamb balanced. Over time these cords can break, making it difficult to raise the window. A new sash cord will give you the ability to move the sash upwards and downwards and hold it in place when 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 must be removed. It may be possible to take them out using an axe or hammer, however, it is best to lay out dust sheets prior to starting any work.

After removing the access panel, you can begin working on the sash. Take the narrow beads (also called "tie rails") out of their grooves with a chisel or flat bar. It's important to take your time, as these are often wedged or nailed in place. If the sash remains in place, pry the mortise and tenon joints free with a screwdriver or hammer, then remove each wood peg. The sash should be able move freely now, but it may need some lubrication in order to feel less stiff.

With the sash in an open position Take a measurement of the sash chain to extend from the pulley at the top of the jamb to the sash slot at the bottom. Cut the cord/chain and house then secure it as in Step 6 above. You can use a hammer, nails or screws. However nails are less likely than screws to cause damage.

It is recommended to keep the original weights if you've 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 opened. Depending on the dimensions and shape of your upvc window repair you might need to install one or two sashweights to keep it open.