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Window Sash Repairs

Make sure to check the sashes of your windows regularly for damage, mildew, and mold. By catching problems before they become serious you can save money on future repairs.

The sash is an internal frame that is able to move vertically up and down in windows that are open. This article will teach you how to perform easy repairs to your sash.

Weather Stripping

Wood window sashes provide a classic aesthetic to your home and, when properly maintained, they can last for many years. However, they can be damaged or deteriorate in time due to exposure to the elements and normal wear and wear and tear. Thankfully, sash repair experts can bring your windows back to their original condition and keep them looking fantastic for longer than replacement windows.

The first step for sash window repairs is addressing weather stripping. It's found on both the sash as well as the frame. If it's damaged or worn out, it can cause drafts and other issues. Start by identifying the window's brand and the manufacturer's date (etched on the glass's corner or the aluminum spacers between panes). Then, remove the sash and mark its width and height to find the appropriate weather stripping replacement to match.

Then, take it off and place it on a table to allow access to all four sides. If your sash has a double-hung, you'll also need to remove the weights and the ropes that go with them, which should have fallen into the pocket of the jamb liner. After removing the sash with the utility knife, remove the old weather stripping by hand or using a putty knife.

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

After removing the parting stops and trimming 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 a day. After the putty has completely cured it is possible to apply an acrylic latex topcoat. This will protect the putty, and give your sash an updated look.

Sash Hardware

The hardware that holds window sashes is susceptible to wear and tear from age and use, and the result can be a door or window that can't be opened or closed easily. It's good to know that replacing or fixing this hardware is usually simple and inexpensive. If a sash is difficult to operate you can try spraying some grease into the jamb channel then slide it open to see if it solves the issue. If not, the issue is most likely due to the sash balance, and you'll have to take off the sash to gain access to this hardware.

Window sashes should open and close with little effort. However, this may be a challenge if the weights have been worn out or the sash connecting rail isn't coated. This could be caused by various reasons such as the lack 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 fix the problem, make sure that the sash is in the proper position within the frame opening and then take it off. If the sash is secured to the hinge arm, you'll have 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, windows that are old, especially those in older homes, may be difficult to open or close. In most instances, a few minor repairs can transform these windows into smooth operators again and save the homeowner money on energy bills.

To make these sash repairs it is important to have all of the necessary tools in place before you begin. Mark the hinge channel's location on the frame (Photo 1) with a pencil. This will make it easier to place the channel in the proper place when you are finished. Remove the sash and take off the hardware including the beads that separate (Photo 2) and the chains or cords which hold it in place. A hot gun with nozzle shield and a medium setting can soften any putty that has been hardened. Take off the old sash and put it in a bag with a label.

Sash Weights

Sash weights can be changed to improve the performance of your window sash and reduce the energy cost. Sash weights consist of heavy iron or lead cylinders that are encased inside a concealed cavity, and attached by a rope to the movable window sash. These weights function as counterbalances, which allows you to open and close the window without requiring mechanical or electrical devices. The sash weights are often neglected or ignored by homeowners and turned into scrap when they fail. Consequently you may have to find 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 is suitable for the. You will also need a new piece of string, a length the sash cord, as well as some sash pulleys that will tie the new sash weights onto the sash cord.

Older windows made of wood are joined with mortise and tenon joints. The wood pegs that hold the parts together can be removed with pin punches and hammers. The majority of these pegs have a large diameter on one side and a smaller diameter on the other, which is why it is essential to remove the smaller-diameter ones first. Sashes made later in the century made use of glue instead of pegs. They can be separated by cutting the glue line using the help of a knife, and then tapping the mortised part loose using mallets.

Once the sash has been released, you can remove stops on the sash and get access to the pockets for weights. This is usually done via tiny holes in the bottom of each jamb. The hole is then covered with a wooden access panel which can be removed so that you can view the inside of the frame.

After you have the sash stopped and the access panel removed, you will be able to remove the weight from the sash and replace it with the new. Weigh the sash first to ensure that the weights you have may not be the right size. Once the new weight is in place, tie a string to it and then thread it through the pulley of the sash. Then, you can nail the string to the boxed frame, leaving a few inches of string protruding from the head to allow for future adjustments.

Sash Cords

In the majority of double-hung windows the chain or cord is connected to the weights. This helps keep the sashes in the jamb in a balanced manner. As time passes, these cords may break, making it impossible to raise the window. A new sash cord can restore the ability to move the sash upwards and downwards and keep it in place when it is opened.

The first step to replace cords for sash is to locate and remove the access panels within the jambs. They are typically screwed or nailed into and require removal. You could use a hammer or chisel to remove them however, it is always best to lay down dust sheets before beginning any work.

After the access panel has been removed, you can start working on the sash. Utilize a flat bar or chisel to pull the small parting beads from their grooves. It is essential to take your time, as these are often wedged or nailed in place. If the sash is still in place, break the mortise and tenon joints with the help of a hammer and pin or screwdriver, then remove the wood pegs on the components. You should be able to move the sash back and forth freely, although it might require lubrication if it feels stiff.

With the sash in an open position, measure enough sash cord/chain to reach from the pulley in the top of the jamb to the sash slot at the bottom. Cut the cord/chain and then fix it as described in Step 6 above. You can use nail, hammer or screws. However nails are less likely than screws to cause damage.

It's best to leave the weights that came with the original counterbalance unless you've purchased a kit that will replace the old counterbalance. They are not expensive and easy to install if you purchase them from salvage shops for architectural use. Depending on the dimensions and shape of your window repairs, you may require one or two sashweights in order to keep it open.