Window Sash Repairs

Window sashes must be checked regularly for mold, mildew and other damage. If you catch these issues early, you can save money on repairs in the future.

The sash is an internal frame that is able to move up and down vertically in windows that open. This article will teach you how to do a variety of simple sash repair.

Weather Stripping

Wooden window sashes can add a classic look to your home. They are also sturdy and last for a long time provided they are properly maintained. However, they can be damaged or degraded over time due to exposure or normal wear. Sash repair specialists can restore windows back to their original condition and maintain their appearance longer than replacement windows.

The first step for sash window repairs is addressing weather stripping, which is found on both the sash and frame. It can cause drafts if worn or loose. Start by identifying the brand of window and the glass manufacturer's date (etched on the glass's corner or the aluminum spacers between panes). Take the sash off, and mark its width and height so you can get new weather stripping that is compatible with the original.

Then, remove the sash and place it on a surface so that you can reach all four sides. If the sash is double-hung, you'll also need to take off the weights and their ropes that 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 cut off the weather stripping that was formerly in place at the corners, then remove it by hand or using a putty knife.

After the sash has been cleared, you can install the stoppers that separate the two sashes. These are long pieces wood that divide the two sashes. Pam likes to replace these with standard 1/2-inch-by - 3/4-inch window trim from the lumberyard, however you can also replace them with a piece of scrap wood.

After removing the stopper and trimming it to length, apply a thin coat of glazing compound over the bottom of the sash. Smooth the compound using a putty tool, and let it dry at least a day. After the putty has completely cure and dried, you can apply a topcoat of acrylic. This will protect the putty, and give your sash a modern appearance.

Sash Hardware

The hardware that supports the window sashes may wear out with time and use. This can result in the window or door that is difficult to open or close. The good news is that fixing and replacing this hardware is typically very simple and cost-effective. If you are having trouble opening the sash, spray some grease into the jamb channel. Then, slide the sash up and open to see if this resolves the problem. If not, the problem is likely with the sash balance and you'll need to take out the sash to access this hardware.

Sashes for windows should be able to open and close without much effort. However, this may be difficult if weights are worn out or the sash-to rail connecting rail isn't properly covered with. This could be caused by a variety of factors that include the lack of maintenance or an unmatched weight rating.

If the hinge arms of a window are beginning to lose their elasticity, this could cause the sash to drag and eventually strike the frame in the corner that's directly opposite the hinge arm (Photo 1). To fix this issue, first make sure the sash fits squarely in the opening of the frame and then take it out of the window. If the sash is screwed to the hinge arm, you'll have to unscrew the hinge arm and replace it (Photo 2). Next, install the new sash (Photo 3).

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

To make these repairs to sash it is important to have all of the tools needed before you begin. Begin by marking the position of the hinge channel on the frame using pencil (Photo 1). This will help you get the channel back on the correct position after you've finished. Remove the sash and remove the hardware including the parting beads (Photo 2) and the cords or chains that hold it in place. Soften any putty that has been hardened with an electric heat gun set to medium and fitted with a shield for the nozzle. Remove the old sash, and store it in a bag with a label.

Sash Weights

If your window sash repairs are to replace a damaged cord or just to keep your windows functioning by replacing worn out sash weights will improve sash operation and help reduce energy costs. Sash weights are made of heavy lead or iron cylinders that are enclosed inside a concealed cavity, and attached by ropes to the moveable window sash. They provide counterbalance, allowing the window to be closed and opened without the need for mechanical or electrical devices. The sash weights are often ignored or discarded by homeowners and then turned into scrap when they fail. Consequently you might need to search for replacements.

A weight from a sash that fell out of the cavity is difficult to recover It is therefore important to find a replacement that fits correctly. You will also require a fresh piece of string, a length sashcord and some sashpulleys to tie the weights you are replacing to the cord.

Mortise and Tenon joints can be used to join windows made of older wood. The wood pegs holding the components together can be removed using pin punches and hammers. The majority of them have large diameters on one side and a smaller size on the other, so it is important to remove the smaller-diameter ones first. Later sashes utilized glue instead of pins. They can be cut by using a knife and mallet.

After the sash is released, you can remove 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 a wooden panel that can be removed to reveal the inside workings.

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 before you begin, as the old weights could be different in size from what is needed. After the new weight has been installed, run an appropriate length of string through the pulling mechanism. Then attach the string to the frame, but only leave a few inches of string protruding from the head to allow for future adjustments.

Sash Cords

Most old double-hung windows include a chain or cord attached to the weights that helps keep the sashes in balance in the jamb. Over time, these cords may become damaged and make it impossible to raise the windows. A new sash cord will restore 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 installed by screws or nails and will require to be removed or relocated. It is possible to take them out using a hammer or chisel, but it is always best to lay out dust sheets prior to beginning any work.

After the access panel has been removed, you can start working on the sash. Use a flat bar or chisel to pry the small parting beads out of their grooves. It is essential to take your time because they are usually placed in a wedge or nail. If the sash is still in place, pry the mortise and tenon joints free using a hammer or screwdriver, then remove each wood peg. The sash should move freely, however it might require some lubrication to feel less stiff.

Measure the length of the sash chain or sash cord required to reach the sash slot at the bottom of the pulley on the top of the jamb. Cut the cord/chain and then fix it as described in Step 6 above. You can employ a hammer, screws or nails, however nails are less likely to cause damage.

Unless you've bought an upgrade kit to replace the old counterbalance system it is recommended to keep the original weights for balancing in place. They're not costly and are easy to install if you buy them from salvage shops for architectural use. Depending on the size of your upvc window repairs two or three sash weights could be needed to keep the sash in an open position.