Window Sash Repairs
Regularly inspect the window sashes for any damage, mildew and mold. You can avoid the cost of repairs in the future by catching these issues early, before they become out of control.
The sash is the interior framing that moves vertically either up or down in windows that are open. This article will demonstrate how to do a variety of simple repairs to sash.
Weather Stripping
Wooden window sashes can give an elegant look to your home. They are also sturdy and will last for many years if they are properly maintained. However, they can be damaged or deteriorate over time due to exposure to elements and normal wear and tear. Sash repair experts can restore windows back to their original condition and keep them looking great longer than replacement windows.
Weather stripping is the primary issue to take care of when fixing windows with sash. It's on both the frame and sash. It can cause drafts if it's worn out or loose. Begin by identifying the window brand and the glass manufacturer's date (etched on the glass's corners or on the aluminum spacers between panes). Take the sash off and mark its width and height so that you can get new weather stripping that is compatible with the original.
Next, remove the sash and set it on a surface so you can access all four sides. If your sash is double-hung, you'll need to remove the weights and their ropes which should have slipped into the pocket of the jamb liner. After removing the sash using the utility knife, remove the old weather stripping by hand or with a putty blade.
After the sash has been cleared, you can replace 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 trimming from the lumberyard. But, you can substitute for a scrap piece of lumber.
After removing the stopper and trimming it to length, apply a thin coat of glazing compound on the bottom of the sash. Smooth the compound with your putty knife, then let it dry for a minimum of a day. Once the putty has fully cured it is possible to apply a topcoat of acrylic. This coating will protect the putty and give your sash a fresh look.
Sash Hardware
The hardware that supports window sashes susceptible to wear and tear from time and usage, and the result can be a door or window that isn't able to open or close easily. It's a good idea to know that replacing and repairing this hardware is often straightforward and cost-effective. If you are having trouble opening a sash, spray some grease into the jamb channel. Then, you can slide the sash out to see if that fixes the problem. If the issue continues, it is most likely the sash balance. You'll need remove the window sash in order to reach this hardware.
Ideally, window sashes should swing open and closed with minimal effort however, this can be a difficult task when the weights are worn or if the sash's meeting rail isn't properly coated. This problem could be caused by a variety of factors that include a lack of maintenance and an unmatched weight rating.
If the hinge arms on windows begin to slide, this can cause the sash drag, and then eventually to hit the frame in the opposite corner (Photo 1). To address this problem, first ensure that the sash is squarely inserted into the opening of the frame and then take it out of the window. If the sash was attached to the hinge arm, unbolt the hinge and replace it. (Photo 2). Then, you can install the new sash (Photo 3).
Due to hinges that are sagging, and a general lack in energy efficiency, old windows particularly those in older homes, can be difficult to open or close. Sometimes, a few simple fixes can help these windows function smoothly and help homeowners save money on energy bills.
It is important to have the tools you need before you start. Mark the hinge channel's location on the frame (Photo 1) using a pencil. This will make it easier to position the channel in the right location after you've completed. Then, remove the sash and take off the hardware, including the parting beads (Photo 2) and the chains or cords that hold it in place. A hot gun with nozzle shield and medium setting will soften any putty that has been hardened. Remove the old sash, and put it in a labelled bag.
Sash Weights
Sash weights are able to be replaced to improve the performance of your window sash and decrease energy costs. Sash weights are heavy, lead or iron cylinders that are enclosed inside a hidden compartment and connected to the movable the sash with a rope. These weights provide counterbalance which allows the window to be closed and opened without using mechanical or electrical devices. The sash weights are usually ignored or discarded by homeowners and then turned into scrap when they fail. Consequently you may have to search for replacements.
It is difficult to recover the sash-weight that fell from the cavity, so you'll need to find one that fits properly. You will also require a fresh piece of string, a length sashcord and a few sashpulleys for tying the new weights to the cord.
Older windows made of wood are joined by mortise and tenon joints. Pin punch and hammer can be used to take out the wood pegs that hold the parts together. Most of these pegs have large diameters on one side and a smaller size on the other, so it is important to remove the smaller-diameter ones first. window repairs made later in the century used glue instead of pegs and can be separated by cutting through the glue line with a knife, then tapping the mortised section loose using mallets.
After the sash is removed then you can take out the sash stop and access the weight pocket. Usually this is accomplished by drilling an opening at the bottom of each jamb. This hole is covered with a wooden panel that can be removed to reveal the inner workings.
Once the sash is stopped and the access panel has been removed, you are able to remove the weight that was previously installed and replace it. Be sure to weigh the sash before you do this, as the old weights could be a different size than what is needed. Once the new weight is installed, thread a string through the sash pulling mechanism. Then nail the string to the boxed frame, leaving a few inches of string hanging from the head to allow for future adjustments.
Sash Cords
The majority of double-hung windows with a history come with a chain or cord attached to the weights which keeps the sashes balanced within the jamb. Over time, these cords could break, making it difficult to raise the window. A new sash cable can restore the ability to move and lower the sash, and keep it in position when it is opened.
The first step to replace sash cords is to find and remove the access panels in the jambs. They are typically installed by screws or nails and must be removed or relocated. It is possible to remove them with a hammer or chisel, but it is always best to lay out dust sheets before starting any work.
After removing the access panel, you can begin working on the sash. Make the small parting beads (also known as "tie rails") out of their grooves using flat bar or chisel. It is important to take your time, as these are often placed in a wedge or nail. If the sash remains in place, remove the mortise and tenon joints using the help of a hammer and pin or screwdriver, and then take out the wood pegs attached to each piece. You should be able to move the sash around without difficulty, though it may require lubrication if it feels stiff.
Measure the length of the sash chain or sash cord required to reach the sash slot on the bottom, and the pulley on the top of the jamb. Cut the cord/chain, and then secure it in the previous step. You can use a hammer, nails or screws. However nails are less likely to cause damage.
If you don't have an item that replaces the old counterbalance system it's recommended to keep the original weights for balancing in place. They are not expensive and easy to install if you purchase them at architectural salvage stores. Depending on the size of your window, one or two sash weights might be required to keep it open.