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Window Sash Repairs

Sashes for windows must be regularly checked for mold, mildew and damage. You can reduce future repair costs by catching these issues early on before they get out of hand.

The sash is an internal frame that moves vertically up and down in windows that open. This article will teach you how to do simple repairs to sash.

Weather Stripping

Wooden window sashes are a great way to add an elegant appearance to your home. They are also sturdy and can last many years if they are properly maintained. However, they can be damaged or degrade over time because of exposure to the elements and wear and tear. Sash repair experts can restore windows to their original condition and maintain their beauty 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 could cause drafts if damaged or is loose. To fix it, start by determining your window's brand and the date on which the glass was manufactured (etched in the corner of the glass or on the aluminum spacer between panes). Remove the sash, and mark its width and height so that you can purchase replacement weather stripping that matches.

Then, you can remove the sash from the holder and place it on an even surface that allows you to reach all four sides. If your sash is double-hung, you'll have to remove the weights and their accompanying ropes, which should have fallen into the pocket of the jamb liner. Once you've removed the sash using a utility knife, you can use it to remove the weather stripping that was formerly in place at the corners. Then, remove it by hand or using a putty blade.

When the sash is clean and clean, you can put in the parting stops. These are long pieces that divide the sashes. Pam prefers to use the standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. However, you can substitute a scrap piece of wood.

After removing the parting stop and cutting it to length and then apply a thin layer of glazing compound over the bottom of the sash. Smooth the compound with your putty knife and let it dry for at least a day. When the putty is fully cure and dried, you can apply a topcoat of acrylic latex. This will protect the putty, and give your sash a fresh look.

Sash Hardware

The hardware that supports window sashes is susceptible to wear and tear from the wear and tear of use and the result could be a door repair or window that can't be opened or closed easily. It's important to know that replacing and fixing this hardware is usually simple and inexpensive. If you're having difficulty opening a sash, spray some grease into the jamb channel. Then, slide the sash up and open to see if that fixes the issue. If the issue persists, it is most likely that the sash balance is off. It is necessary remove the window sash to reach this hardware.

Ideally, window sashes should be able to open and close with minimal effort but this is difficult when the weights wear out or if the sash that joins rail isn't properly coated. This problem can be caused by a variety of reasons, such as insufficient maintenance or a mismatched weight rating for a particular window sash.

If the hinge arms of a window are beginning to sag, this can cause the sash's to drag and eventually hit the frame in the corner directly opposite the hinge arm (Photo 1). To fix this problem, first ensure that the sash fits squarely in the opening of the frame and then take it out of the window. If the sash is secured to the hinge arm, you'll need to loosen the hinge arm and replace it (Photo 2). Then, put in the new sash (Photo 3).

Due to hinges that are sagging, and a general lack in energy efficiency, older windows, especially those in older homes, can be difficult to open or close. Sometimes, a few simple fixes can make these windows operate smoothly again and help homeowners save money on their energy bills.

To complete these sash repairs, it's important to have all the tools needed before you begin. Begin by marking the position of the hinge channel on the frame using a pencil (Photo 1). This will make it easier to place the channel in the correct position after you've finished. Take the sash off and then remove all hardware including the parting beads, cords, and window repairs chains that keep the sash in place. Heat gun with nozzle shield and medium setting will soften any hardened glue. Take off the old sash and store it in a bag with a label.

Sash Weights

Sash weights are able to be replaced to improve the performance of your window sash and reduce energy costs. Sash weights are hefty lead or iron cylinders, which are enclosed inside a hidden compartment and attached to the movable the sash with a rope. They are counterbalancers, allowing the window to be closed and opened without the use of electrical or mechanical devices. If they fail, sashweights are often ignored or disabled by homeowners.

It's not easy to retrieve the sash-weight that fell 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 sashcord and some sashpulleys to tie the weights you are replacing to the cord.

Mortise and Tenon joints are used to join windows made of older wood. Hammers and pins can be used to cut off the wood pegs holding the components together. The majority of these pegs are big on one side, and smaller on the other. It is important to first remove the smaller diameter sides. Later sashes used glue instead of pins. They can be separated with a knife and mallets.

After the sash has been removed and removed, you can take off the sash stop and gain access to the weight pocket. This is usually done through a small hole at the bottom of each jamb. This hole is then covered by an access panel of wood which can be removed so that you can observe the inner workings of the frame.

When the sash has been shut off and the access panel has been removed, you can take off the old weight and replace it. Be sure to weigh the sash prior to you do this, as the weights that were previously used may be a different size than the one you need. Once the new weight is installed, thread an appropriate length of string through the pulling mechanism. Then attach the string to the frame, leaving a few inches of string sticking out from the head for future adjustment.

Sash Cords

In the majority of old double-hung windows the chain or cord is connected to the weights. This helps keep the sashes in the jamb level. As time passes, these cords may break, making it difficult to raise the window. A new sash cord will restore the ability to move the sash up and down and hold it in position when it is opened.

The first step in replacing sash cords is to find and remove the access panels in the jambs. They are usually fixed or screwed in and will need to be removed or relocated. It may be possible to take them out using the hammer or chisel however, it is best to lay out dust sheets prior to starting any work.

After you have removed the access panel, you are able to begin working on the sash. Use a flat bar or chisel, to pry the narrow partsing beads out of their grooves. They are typically wedged into or nailed, but they can be removed, so it's worth taking your time here. If the sash is still in place, pry the mortise and tenon joints free with a screwdriver or hammer, then remove each wood peg. The sash should be able to move around freely now, however it might require some lubrication in order to feel less stiff.

Measure the length of the sash chain or sash cord needed to reach the sash slot on the bottom from the pulley at the top of the jamb. Cut the cord/chain and then attach it in Step 6 above. You can use a hammer and nail or screws, but nails are less likely to cause damage.

It is recommended to keep the original weights if you have purchased a kit to replace the counterbalance that was previously installed. They're not expensive and easy to install if you buy them from architectural salvage stores. Depending on the size of your window, one or two sashweights could be needed to keep the sash in an open position.