Window Sash Repairs Tips From The Top In The Industry

Window Sash Repairs
Window sashes need to be regularly checked for mold, mildew and other damage. You can save future repair costs by catching problems in the early stages, before they get out of hand.
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 perform several simple repairs to the sash.
Weather Stripping
Wood window sashes give a classic aesthetic to your home. When properly maintained, they can last for a long time. However, they can be damaged or deteriorate over time due to exposure to elements and wear and wear and tear. Sash repair specialists can restore windows to their original condition and keep them looking great much longer than replacement windows.
The first step in sash window repair s is addressing weather stripping, which is found on both the sash and frame. If it's worn or loose, out, it can lead to drafts and other problems. Start 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 width and height to find replacement weather stripping to match.
Then, take it off and set it on a table so you can access all four sides. If the sash is double-hung, you must remove the ropes and weights that should be buried in the jamb lining. After you have removed the sash using the utility knife, remove the weather stripping from the old sash by hand or with the putty blade.
When the sash is clean it is time to replace the parting stops. These are long pieces that divide the sashes. Pam prefers standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. However, you could also substitute a scrap piece of wood.
After removing the parting stop and cutting it to length and then apply a thin layer of glazing compound to the bottom of the sash. Smooth the compound using a putty tool and let it dry at least one day. After it has fully dried, apply a top coat of acrylic latex paint. This will protect the putty and give your sash a modern appearance.
Sash Hardware
The hardware that supports window sashes is prone to wearing out from the wear and tear of use and the result could be a door or window that can't be opened or closed easily. The good thing is that fixing and replacing this hardware is generally quite simple and inexpensive. If a sash is difficult to operate you can try spraying some oil into the jamb channel then open it to see if this fixes the problem. If the issue continues it's likely to be due to the sash's balance. You'll need to remove the window sash in order to get access to this part of the hardware.
The ideal situation is for window sashes to move open and shut without effort, however, this can be an issue if the weights become worn or if the sash that joins rail isn't properly coated. This could be caused by a variety of factors, including the lack of maintenance or an unmatched weight rating.
If the hinge arms of a window are starting to sag, this can cause the sash to slide and eventually hit the frame in the corner that's opposite the hinge arm (Photo 1). To resolve this issue, first make sure the sash is squarely inserted into the opening of the frame and then take it out of the window. If the sash is secured 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).
Old windows, especially those in older houses, can be difficult to open and close, due to sagging hinges and general lack of energy efficiency. Many times, a few simple fixes can allow these windows to operate smoothly once more and save homeowners money on energy costs.
To make these sash repairs it is essential to have all of the tools needed before you begin. Begin by marking the position of the hinge channel on the frame with a pencil (Photo 1). This will allow you to get the channel back on position correctly after you've completed. Remove the sash and then remove all hardware, including the beads for parting, cords, and chains that hold the sash in place. Soften any hardened putty with a heat gun set to medium and fitted with a nozzle shield. Remove the old sash and keep it in a bag with a label.
Sash Weights
If your window sash repairs are to replace a broken cord or to keep your windows functioning by replacing worn out sash weights will improve sash operation and reduce the energy cost. Sash weights are composed of iron or lead cylindricals that are contained inside a concealed cavity, and attached by a rope to the movable window sash. They function as counterbalances, which allows you to open and close the window without having to use mechanical or electrical devices. The sash weights are often neglected or ignored by homeowners, and are turned into scrap when they fail. Consequently you might need to search for replacements.
A sash weight that has fallen out of the cavity is difficult to get back and you'll need to find a replacement that is suitable for the. You will also require a fresh piece of string, a length of sashcord and a few sashpulleys for tying the new weights to the cord.
Older wood windows are joined by 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 are large on one side, but smaller on the other. It is crucial to first remove the smaller diameter sides. Sashes made later in the century used glue instead of pegs. They can be separated by cutting through the glue line with a knife, then tapping the mortised section loose using mallets.
Once the sash has been released, you can remove the sash stops and gain access to the weight pockets. Usually, this is done through a hole near the bottom of each jamb. The hole is then covered with the wooden panel which can be removed to reveal the inside workings.
After the sash has been stopped and the access panel is removed, you can take off the weight you used and replace it. Be sure to weigh the sash prior to you do this, as the weights that were previously used may be different sizes than what is needed. 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 attach the string to your boxed frame. Leave a few inches at the head of the string for future adjustments.
Sash Cords
In most old double-hung window the chain or cord is affixed to the weights. This helps keep the sashes in the jamb balanced. Over time, these chains can get damaged and make it difficult to raise the windows. A new sash cable can restore the ability to raise and lower the sash, and keep it in position when it is opened.
The first step in replacing sash cords is to locate and take out the access panels located in the jambs. They are typically installed by screws or nails and will need to be removed or repositioned. You could use a hammer and chisel to remove them however, it is always best to lay down dust sheets prior to starting any work.
After the access panel has been removed, you can begin working on the sash. Take the narrow beads (also known as "tie rails") out of their grooves with a chisel or flat bar. It's important to be patient because they are usually placed in a wedge or nail. If the sash is still in place, break the mortise and the tenon joints by using a hammer and pin punch or screwdriver, then remove the wood pegs on each piece. You should now be able to move the sash back and forth freely, though it will probably need some oiling if it seems stiff.
With the sash in an open position Take a measurement of the sash chain to extend from the pulley on 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 do this with a hammer, nails, or screws. However nails are less likely than screws to cause damage.
If you haven't purchased a kit that replaces the counterbalance system that was in place before, it's best to keep the original weights for balancing in place. It's not too expensive to purchase these from salvage shops for architectural purposes and they will be easy to install once you have the sash unlocked. Depending on the size and shape of your window you might need to install one or two sashweights to keep it open.