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Window Sash Repairs

Sashes for windows must be regularly checked for mold, mildew and other damage. You can avoid future repair costs by catching these issues early, before they become too much.

The sash is an internal frame that can move upwards and downwards in windows that are open. This article will demonstrate how to perform several simple repairs to sash.

Weather Stripping

Wooden window sashes are a great way to add an elegant appearance to your home. They are also durable and will last for many years when they are maintained properly. However, they can become damaged or degrade over time due to exposure to elements and normal wear and tear. Sash repair specialists can restore windows to their original condition and maintain their appearance much longer than replacement windows.

Weather stripping is the first issue to take care of when fixing windows that have sash. It's on both the frame and the sash. If it's worn or loose, out, it can cause drafts and other problems. Begin by identifying the window brand and the manufacturer's date (etched on the corner of the glass, or the aluminum spacers between panes). Then, remove the sash and mark its height and width so that you can locate the appropriate weather stripping replacement to match.

Then, take the sash from the holder and place it on an even surface that allows you to reach all four sides. If the sash is double-hung, you'll also need to remove the weights and their ropes, which should have fallen into the pocket that was intended to be in the jamb liner. Once you've taken the sash off, use a utility knife to cut away the weather stripping that was formerly in place at the corners, and then remove it manually or using a putty blade.

After the sash has been cleared, you can replace the parting stops. These are long pieces that separate the sashes. Pam likes to replace these 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 stoppers for parting and cutting them to the desired length then apply a thin layer of glazing compound over the bottom of the sash. Smooth the compound using your putty tool and allow it to dry for at least one day. When it's completely dried and dried, apply a second coat of acrylic latex paint. This coating will protect the putty and give your sash a new look.

Sash Hardware

The hardware that holds window sashes is prone to wearing out from age and use and the result could be a door or window that won't open or close easily. It's a good idea to know that replacing or fixing this hardware is usually simple and inexpensive. If you're having difficulty opening a sash, spray some oil into the jamb channel. Then, slide the sash out to see if it resolves the problem. If not, the problem is likely with the balance of the sash and you'll have to take off the sash to access the hardware.

The ideal situation is for window sashes to swing open and closed with minimal effort but this can be a difficult task when the weights are worn or if the sash that joins rail isn't properly glazed. This issue can be due to many factors, including an absence of maintenance or an unmatched weight rating.

If the hinge arms on a window begin to sag this can cause the sash drag, and then eventually to hit the frame in the opposite corner (Photo 1). To resolve this problem, first ensure that the sash is squarely inserted into the frame's opening and then take it out of the window. If the sash was screwed onto the hinge arm, unbolt the hinge and replace it. (Photo 2). Install the new sash next (Photo 3).

Old windows, especially those in older homes, may be difficult to open and close because of sagging hinges and a general lack of energy efficiency. In most cases, a few simple repairs can turn these windows into smooth operators and save homeowners cash on energy costs.

To complete these repairs to the sash it is essential to have all of the tools needed before you begin. Begin by marking the location of the hinge channel on the frame using a pencil (Photo 1). This will allow you to get the channel back on place correctly when you're finished. Take the sash off, and remove all the hardware including the parting beads, cords, and chains that hold the sash in place. Soften any hardened putty with the help of a heat gun set at medium and fitted with a nozzle shield. Remove the old sash, and store it in an bag with a label.

Sash Weights

If your window sash repairs are to replace a damaged cord or simply to keep the windows functional by replacing worn out sash weights will improve sash operation and reduce the energy cost. Sash weights are heavy, lead or iron cylinders that are enclosed inside a hidden compartment and linked to the moveable window sash using rope. These weights provide counterbalance which allows the window to be opened and closed without using mechanical or electrical devices. The sash weights are usually neglected or ignored by homeowners and turned into scrap when they fail; therefore you might need to locate replacements.

A weight in a sash that has fallen out of the cavity is difficult to get back It is therefore important to find a replacement that fits correctly. You will also require a new piece string, a length of sashcord and a few sashpulleys to secure the new weights to the cord.

Older wood windows are joined with mortise and tenon joints. The wood pegs holding the parts together can be removed with the use of a pin punch and hammer. The majority of them are large on one side and smaller on the other. It is essential 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 using an instrument, and then tapping the mortised section loose using mallets.

Once the sash has been removed, you can take off the sash stops and gain access to the weight pockets. This is usually done via a small hole at the bottom of each jamb. The hole is surrounded by an unfinished wooden panel that can be removed to reveal the interior workings.

When the sash has been shut off and the access panel has been removed, you are able to remove the weight that was previously installed and replace it. Be sure to weigh the sash before you do this, as the old weights may be a different size than what is needed. After the new weight is in place you can tie a string around it and thread it through the sash pulley. Then, attach the string to your boxed frame. Leave a few inches at the head of the string to allow future adjustments.

Sash Cords

The majority of double glazing repairs-hung windows with a history include a chain or cord attached to the weights that helps keep the sashes balanced in the jamb. As time passes, these cords may break, making it difficult to raise the window. A new sash cord can restore the ability to move the sash up and down and will keep it in its place when it is 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 need to be removed. You might be able to use a hammer and chisel for removing them but it's best to lay down dust sheets before commencing any work.

After you have removed the access panel, wooden you can begin working on the sash. Use a flat bar or chisel to pry the small partsing beads out of their grooves. It is important to be patient because they are usually wedged or nailed in place. If the sash is in place, remove the mortise and tenon joints using a hammer and pin punch or screwdriver, then remove the wood pegs on each piece. You should now be able to move the sash back and forth freely, although it will probably need some oiling if it seems stiff.

Take a measurement of the length of sash cord/chain needed to reach the sash slot at the bottom of the pulley at the top of the jamb. Cut the cord/chain and then attach it in Step 6 above. You can use either 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 have purchased a kit that will replace the old counterbalance. They're not expensive and easy to install if you purchase them at architectural salvage stores. Based on the size of your window one or two sashweights may be needed to keep it open.