Window Sash Repairs

Check the windows sashes regularly for any damage, mildew and mold. You can reduce future repair costs by catching these issues early before they get out of hand.

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

Weather Stripping

Wooden window sashes can add a classic look to your home. They are also durable and will last for many years provided they are properly maintained. They may, Window Repair however, be damaged or degraded over time due to exposure and normal wear. Sash repair specialists can restore windows to their original condition and keep them looking great longer than replacement windows.

The first step in sash window repairs is addressing weather stripping, which is found on both the sash as well as the frame. It can cause drafts if it's damaged or is loose. To fix it, begin by determining your window's brand 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 that you can locate new weather stripping that matches.

Next, remove the sash and set it on a table to allow access to all four sides. If your sash has a double-hung, you'll need to take off the weights and the ropes that go with them which should have slipped into the pocket that was intended to be in the jamb liner. After you have removed the sash using the utility knife, take off the old weather stripping by hand or with a putty knife.

Once the sash is clear it is time to replace the parting stops. These are long pieces of wood that divide the two sashes. Pam likes to replace them with standard 1/2-inch by 3/4-inch window trim from the lumberyard, but you could also use a piece of scrap wood.

After removing the stoppers for parting and trimming them to the desired length then apply a thin layer of glazing compound to the bottom of the sash. Smooth out the compound using your putty knife, and then let it dry for at least a few days. Once the putty has fully cure, you can apply a topcoat of acrylic latex. This coating will protect the putty and give your sash a fresh appearance.

Sash Hardware

The hardware that supports the window repair sashes may wear out over time and use. This can result in windows or doors that is difficult to open or close. The good news is that repairing and replacing this hardware is typically very simple and cost-effective. If a sash isn't easy to operate try spraying grease into the jamb channel then open it to see if that resolves the issue. If not, the problem is most likely due to the sash balance, and you'll need to take out the sash to access this hardware.

The ideal situation is for window sashes to be able to open and close with very little effort, but this is an issue when the weights wear out or if the sash meeting rail isn't properly glazed. This problem can be due to many factors such as a lack of maintenance and an unmatched weight rating.

If the hinge arms on the window begin to move, this can cause the sash drag, and then eventually to hit the frame at the opposite corner (Photo 1). To address this issue, first make sure the sash fits squarely in the frame's opening and then take it out of the window. If the sash is screwed to the hinge arm, you'll need to loosen the hinge arm and replace it (Photo 2). Install the new sash (Photo 3).

Because of sagging hinges and a general deficiency in energy efficiency, old windows particularly those in older houses, could be difficult to open or close. Many times, a few simple fixes can make these windows operate smoothly again and save homeowners money on energy costs.

It is important to have the tools you need before you start. Mark the hinge channel's location on the frame (Photo 1) using a pencil. This will help you to position the channel in the correct place when you are finished. Remove the sash, and remove all the hardware including the parting beads cords, chains, and cords that help to hold the sash. Heat gun with nozzle shield and a medium setting will soften any putty that has been hardened. Remove the old sash, and store it in an bag with a label.

Sash Weights

If your window sash repairs are to replace a broken cord or simply to keep the windows functional, replacing worn out weights on sash can improve sash operation and reduce the energy cost. Sash weights consist of heavy lead or iron cylinders that are encased inside a concealed cavity, and connected by ropes to the movable window sash. They function as counterbalances and allow you to open and close the Window repair without requiring mechanical or electrical devices. When they fail, sashweights are often ignored or disabled by homeowners.

It is difficult to recover an sash-weight which has fallen from the cavity, so you'll want to find one that fits correctly. You will also require a new piece of string, a length of the sash cord, as well as some sash pulleys that will tie the new sash weights to the sash cord.

Mortise and Tenon joints are used to join old wood windows. The wood pegs holding the components together can be removed using pin punches and hammers. The majority of these pegs are big on one side, but smaller on the other. It is important to first remove the smaller diameter sides. Later sashes utilized glue instead of pins. They can be separated by using a knife and mallets.

After the sash is released, you can remove stops on the sash and get access to the weight pockets. Usually this is accomplished by drilling a hole near the bottom of each jamb. The hole is then covered with an access panel made of wood which can be removed to allow you to view the inside of the frame.

After the sash has been stopped and the access panel is removed, you can take off the weight that was previously installed and replace it. First, weigh the sash because the weights you have may not be the right size. After the new weight is installed, tie a string to it and thread it through the pulley for the sash. Then, attach the string to the boxed frame. Leave a few inches of space at the head of the string to allow future adjustments.

Sash Cords

Most old double-hung windows have a cord or chain attached to the weights that keeps the sashes in balance within the jamb. Over time these cords can break, making it impossible to raise the window repair. A new sash cord will restore the ability to move the sash upwards and downwards and will keep it in its position when it is opened.

The first step in replacing cords for sash is to locate and remove the access panels within the jambs. They are usually screwed or nailed in and must be removed. You could use a hammer and chisel to prise them off but it's best to lay down dust sheets before commencing any work.

After you have removed the access panel, you can begin to work on the sash. Prise the narrow parting beads (also known as "tie rails") out of their grooves using the chisel or flat bar. It is essential to take your time, as these are often stuck or nailed to the floor. If the sash is still in place, pull the mortise-and tenon joints using a hammer or screwdriver and then remove each wood peg. The sash should be able move around freely now, however it may require some lubrication in order to feel less stiff.

Measure the length of sash cord/chain needed to reach the sash slot on the bottom, and the pulley on the top of the jamb. Cut the cord or chain and then attach it as described in the previous step. You can use nail, hammer or screws. However, nails are less likely to cause damage.

It is recommended to keep the original weights in place unless you have purchased a kit to replace the old counterbalance. They're not costly and are easy to install if you buy them at architectural salvage stores. Depending on the size of your window, two or three sash weights might be required to keep it open.