Window Sash Repairs
Sashes for windows must be regularly checked for mold, mildew and damage. You can reduce future repair costs by catching problems in the early stages, before they become too much.
The sash is an interior framing that moves vertically up or down in windows that are open. This article will show you how to carry out a few simple repairs to the sash.
Weather Stripping
Wood window sashes give the classic look to your home and, when properly maintained, they will last for a long time. They can, however, become damaged or degraded with time due to exposure or normal wear. Sash repair experts can restore windows back to their original condition and keep them looking great much longer than replacement windows.
The first step to repair sash window damage is to fix weather stripping. It's found on both the sash and frame. If it's damaged or worn out, it can cause drafts, as well as other issues. To fix it, start by determining your window's brand and glass manufacturer date (etched in the corner of the glass or on the aluminum spacer between panes). Then, take the sash off and mark its width and height, so you can find replacement weather stripping to match.
Then, remove the sash from its holder and place it on a flat surface to allow you to see all four sides. If your sash has a double-hung, you'll need to remove the weights and their ropes which should have slipped into the intended pocket in the jamb liner. After removing the sash using the utility knife, remove the weather stripping that was left by hand or with a putty blade.
After the sash has been cleaned, you can replace the stoppers that separate the two sashes. These are long pieces that separate the sashes. Pam likes to replace them with standard 1/2-inch-by 3/4-inch window trim from the lumberyard, however you could also use scrap wood.
After removing the stopper for the parting and trimming it to length after which, apply a thin layer of glazing compound to the bottom of the sash. Smooth it out using your putty knife and let it dry for a minimum of a day. Once the putty has fully dried, you can apply a topcoat of acrylic latex. Welwyn Garden City double glazing repairs will protect the putty and give your sash a new appearance.
Sash Hardware
The hardware that holds the windows sashes can become worn out over time and use. This can result in windows or doors that is difficult to open or close. The good thing is that fixing and replacing this hardware is typically quite simple and inexpensive. If a sash becomes difficult to operate try spraying lubrication into the jamb channel then slide it open to see if that solves the issue. If not, the issue is most likely due to the sash balance, and you'll need to take out the sash to access the hardware.
Window sashes should open and close with little effort. However, this can be difficult if the weights are worn out or the sash-to rail connecting rail isn't properly coated. This issue can be caused by a number of factors, including the lack of maintenance or a mismatched weight rating for the particular sash.
If the hinge arms of a window are beginning to lose their elasticity, this could cause the sash to drag and eventually land on the frame in the corner directly opposite the hinge arm (Photo 1). To address this problem, first ensure that the sash is firmly seated 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 need to loosen the hinge arm and replace it (Photo 2). Then, you can install the new sash (Photo 3).
Due to sagging hinges, and a general lack in energy efficiency, old windows particularly those in older homes, may be difficult to open or close. In most cases, a few simple repairs can transform these windows into smooth operators and save homeowners money on energy costs.
In order to make these sash repairs it is important to have all the tools needed before you begin. Begin by marking the location of the hinge channel on the frame with a pencil (Photo 1). This will make it easier to place the channel in the correct position after you've finished. Remove the sash and take off the hardware including the beads that separate (Photo 2) and the chains or cords that secure it. Soften any putty that has been hardened with a heat gun set to medium and equipped with a nozzle shield. Remove the old sash, and put it in a bag that is labeled.
Sash Weights
Sash weights can be replaced to improve the operation of your window sash, and also reduce energy costs. Sash weights are composed of heavy iron or lead cylindricals that are contained inside a concealed cavity, and connected by ropes to the moveable window sash. These weights function as counterbalances, allowing you to open and shut the window without the need for mechanical or electrical devices. When they fail, sashweights are usually ignored or disabled by homeowners.
It's not easy to retrieve an sash-weight which has fallen from the cavity, so you'll need 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 the sash cord.
Mortise and Tenon joints are used to join windows made of older wood. Pin punch and hammer can be used to remove the wood pegs holding the parts together. The majority of these pegs have large diameters on one side and a smaller diameter on the other, so it is important to remove the smaller-diameter sides first. Later sashes made use of glue instead of pins. They can be separated with a knife and a mallet.
Once the sash is freed and removed, you can take off the stopper on the sash and get access to the weight pocket. Usually this is accomplished by drilling a hole near the bottom of each jamb. The hole is then covered with an access panel of wood that can be cut off to let you see the inner workings of the frame.
After the sash has been stopped and the access panel has been removed, you are able to remove the old weight and replace it. Be sure to weigh the sash first because the weights you've got may not be the correct size. After the new weight has been installed, run a string through the sash pulling mechanism. Then, attach the string to the boxed frame. Leave a few inches at the top of the string to allow future adjustments.
Sash Cords
Most double-hung windows of the past come with a chain or cord attached to the weights that keeps the sashes balanced within the jamb. Over time, these cords may become damaged and render it impossible to raise the windows. A new sash cable can restore the ability to raise and lower the sash, and keep it in place when it is opened.
The first step to replace sash cords is to locate and take out the access panels located in the jambs. They are typically screwed or nailed into and must be removed. You might be able to use a hammer or chisel to remove them but it's best to lay down dust sheets prior to starting any work.
After removing the access panel, you are able to begin to work on the sash. Make the small parting beads (also called "tie rails") out of their grooves with flat bar or chisel. They are usually wedged in or nailed, but they can be snipped out and it's worth your time. If the sash remains in place, break the mortise-and tenon joints with a hammer or screwdriver, then remove each wood peg. The sash should be able to move around freely now, however it may need some lubrication to make it feel less stiff.
With the sash in an open position Take a measurement of the sash chain to reach from the pulley in the top of the jamb to the sash slot at the bottom. Cut the cord or chain and fix it as described in the previous step. You can either employ a hammer, screws or nails, however nails are less likely to cause damage.
If you haven't purchased an item that replaces the counterbalance system that was in place before, it's recommended to keep the original weights for balancing in place. It's not expensive to buy them from a salvage store and they'll be simple to install once you've got the sash opened. Depending on the size and shape of your window, you may need to use one or two sashweights to keep it open.