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8 Tips To Up Your Window Sash Repairs Game
Window Sash Repairs

Window sashes need to be regularly checked for mold, mildew and damage. You can save the cost of repairs in the future by catching problems early, before they get out of hand.

The sash is an inside frame that is able to move upwards and downwards in windows that open. This article will teach you how to do a variety of simple repairs to the sash.


Weather Stripping

Wood window sashes give an elegant look to your home. If properly maintained, they can last for many years. They can, however, be damaged or degraded over time due to exposure or normal wear and tear. Sash repair experts can restore windows to their original state 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 worn or loose. Begin by identifying the window's brand and the glass manufacturer's date (etched on the corner of the glass or the aluminum spacers between panes). Then, take the sash off and mark its height and width, so you can find new weather stripping that matches.

Then, remove the sash and set it on a table so you can access all four sides. If the sash is double-hung, remove the ropes and weights that should be buried inside the jamb lining. After removing the sash with the utility knife, take off the weather stripping from the old sash by hand or with the putty blade.

After the sash has been cleared and clean, you can put in the parting stops. These are long pieces that separate the sashes. Pam prefers standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. But, you can also use for a scrap piece of lumber.

After removing the stopper and cutting it to length after which, apply a thin layer of glazing compound over the bottom of the sash. Smooth out the compound using your putty knife and let it dry for at least a few days. When it's completely dried, apply a top coat of acrylic latex paint. This will protect the putty and give your sash a new appearance.

Sash Hardware

The hardware that holds the window sashes can wear out over time and with use. This can result in windows or doors that is difficult to open or close. It's a good idea to know that replacing and repair of this hardware is typically straightforward and cost-effective. If you are having trouble opening the sash, spray some lubricant into the jamb channel. Then slide the sash out to see if this resolves the problem. If the issue continues it's likely the sash balance. It is necessary to remove the window sash to reach this hardware.

Ideally, window sashes should move open and shut with very little effort, but this is difficult when the weights wear out or if the sash that joins rail isn't properly glazed. This problem can be due to various reasons that include an absence of maintenance or an unmatched weight rating.

If the hinge arms on the window begin to move, this could cause the sash to drag and eventually hit against 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 remove it from the window. If the sash is secured to the hinge arm, you'll have to unscrew the hinge arm and replace it (Photo 2). Then, you can install the new sash (Photo 3).

Old windows, particularly those in older homes, can be difficult to open and close due to hinges that are sagging and a general inefficiency. In many cases, a few simple fixes can help these windows function smoothly again and help homeowners save money on energy bills.

It is important to have the tools needed before you begin. Begin by marking the position of the hinge channel on the frame using pencil (Photo 1). This will assist you in getting the channel back in position correctly after you've completed. Take the sash off, and remove all the hardware including the parting beads, cords, and chains that help to hold the sash. The nozzle shield of the heat gun and medium setting will soften any hardened glue. Remove the old sash and put it in a bag that is labeled.

Sash Weights

Sash weights can be changed to improve the operation of your window sash, and also reduce the cost of energy. Sash weights are hefty lead or iron cylinders, which are enclosed in a hidden cavity and linked to the moveable window sash using rope. They function as counterbalances and allow you to open and close the window without requiring mechanical or electrical devices. The sash-weights are typically ignored or discarded by homeowners and turned into scrap when they break; therefore, you may need to search for replacements.

It's difficult to retrieve a sash-weight that has fallen from the cavity, so you'll want to find one that fits correctly. You will also need a new piece of string, a length of sash cord, and a few sash pulleys to connect the new sash weights to the sash cord.

Mortise and Tenon joints are used to join older wood windows. The wood pegs that keep the components together can be removed with pin punches and hammers. The majority of these pegs are big on one side, but smaller on the other. It is crucial to first remove the smaller diameter sides. Deptford double glazing repair made later in the century used glue instead of pegs. They can be separated by cutting through the glue line with the help of a knife, and then tapping the mortised part loose with mallets.

After the sash is removed, you can remove the sash stop and access the weight pocket. This is typically done by drilling an opening at the bottom of every jamb. This hole is then covered by an access panel of wood that can be ripped off so that you can see the inner workings of the frame.

After you have the sash stopped and the access panel removed, you'll be able to remove the old sash weight and replace it with the new. Be sure to weigh the sash before you do this, as the old weights could be different sizes than what you require. After the new weight is installed, thread an appropriate length of string through the pulling mechanism. Then nail the string to the boxed frame, but leave a few inches of string sticking out from the head to allow for future adjustments.

Sash Cords

The majority of double-hung windows with a history include a chain or cord attached to the weights which supports and keeps the sashes level within the jamb. Over time these cords can 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 place when it is opened.

The first step to replace cords for sash is to locate and take out the access panels located in the jambs. These are usually nailed or screwed in and will require to be removed or repositioned. You might be able to employ a hammer and chisel for removing them but it's best to lay down dust sheets before beginning any work.

After removing the access panel, you are able to begin to work on the sash. Utilize a flat bar or chisel to pry the small parting beads from their grooves. It's important to be patient because they are usually wedged or nailed in place. If the sash is in place, pry out the mortise and tenon joints with pin punch and hammer or screwdriver, then remove the wood pegs that are on each piece. The sash should be able move freely, however it may need some lubrication to make it feel less stiff.

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

It is recommended to keep the original weights if you've purchased a kit to replace the old counterbalance. It's not expensive to buy these from salvage shops for architectural purposes and they will be easy to install once you have the sash opened. Based on the size and shape of your window you may need to use one or two sashweights to keep the sash open.