Window Sash Repairs
Check the windows sashes regularly for signs of damage, mildew and mold. You can save the cost of repairs in the future by catching these issues in the early stages before they get out of hand.
The sash is an interior frame that can move up and down vertically in windows that open. This article will show you how to make several simple repairs to sash.
Weather Stripping
Wooden window sashes can give an elegant look to your home. They are also durable and will last for many years if they are properly maintained. They can, however, get damaged or deteriorated over time due to exposure and normal wear and tear. Sash repair experts can restore windows to their original condition and maintain their appearance longer than replacement windows.
The first step to repair sash windows is to address weather stripping, which is found on both the sash as well as the frame. If it's worn or loose, out, it can cause drafts and other issues. To fix it, start by determining your window's brand and the date on which the glass was manufactured (etched in the corner of the glass or on the aluminum spacer between panes). Then, take the sash off and mark its height and width, so you can find new weather stripping that matches.
Then, take 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 also need to take off the weights and the ropes that go with them that should have fallen into the pocket that was intended to be in the jamb liner. After removing the sash using the utility knife, take off the old weather stripping by hand or with the putty blade.
Once window repairs has been cleared, you can install parting stops. These are long pieces that divide the sashes. Pam prefers to use standard 1/2-inch by 3/4-inch window trimming from the lumberyard. However, you could substitute a scrap piece of wood.
After removing the stoppers for parting and trimming them to the desired length, apply a thin layer of glazing compound on the bottom of the sash. Smooth the compound using your putty tool, and let it dry at least a day. When the putty is fully dried it is possible to apply an acrylic latex topcoat. This will help protect the putty, and give your sash an updated appearance.
Sash Hardware
The hardware that holds the window sashes may wear out over time and use. This could result in windows or doors that is difficult to open or close. It's good to know that replacing or repairing this hardware is often simple and inexpensive. If you're having trouble opening a sash, spray some oil into the jamb channel. Then, you can slide the sash out to see if this resolves the issue. If not, the issue is likely with the balance of the sash and you'll have to take off the sash in order to access the hardware.
Sashes for windows should be able to open and close without much effort. However, this can be a challenge if the weights have been worn out or the sash-to-rail meeting rail is not properly coated. This issue could be caused by a number of factors, including the lack of maintenance or a mismatched weight rating for the particular window sash.
If the hinge arms of a window begin to slide, this could cause the sash to slide and eventually strike the frame in the corner that's directly opposite the hinge arm (Photo 1). To fix the problem make sure the sash is in the proper position within the frame opening, and then take it off. If the sash is attached to the hinge arm, remove the hinge and replace it. (Photo 2). Install the new sash (Photo 3).
Old windows, especially those in older homes, can be difficult to close and open because of sagging hinges and an overall inefficiency. In most instances, a few minor repairs can turn these windows into smooth operators again and save the homeowner cash on energy costs.
To complete these repairs to the sash, it's important to have all of the tools needed before you begin. Mark the location of the hinge channel on the frame (Photo 1) using a pencil. This will help you to place the channel in the right position after you've finished. Take the sash off, and remove all the hardware including the parting beads, cords, and chains that keep the sash in place. Heat gun with nozzle shield and medium setting will soften any hardened putty. Remove the old sash, and keep it in a bag labeled.
Sash Weights
Sash weights can be replaced to improve the operation of your window sash, and also reduce the energy cost. Sash weights consist of iron or lead cylindricals that are contained inside a concealed cavity, and connected by ropes to the moveable window sash. These weights provide counterbalance, allowing the window to be shut and opened without the use of electrical or mechanical devices. The sash weights are often ignored or discarded by homeowners and then turned into scrap when they fail. Consequently you may have to search for replacements.
A weight from a sash that fell out of the cavity is difficult to recover It is therefore important to find a new one that fits correctly. You will also require a fresh piece of string, a length of sashcord and a few sashpulleys to secure the weights you are replacing to the cord.
Older windows made of wood are joined by mortise and tenon joints. Hammers and pins can be used to take out the wood pegs holding the components together. The majority of these pegs are big on one side, but smaller on the other. It is important to first remove the smaller diameter sides. Later sashes used glue instead of pins. They can be cut by using a knife or a mallet.
After the sash is removed then you can take out the sash stop and access the weight pocket. This is usually done through tiny holes at the bottom of every jamb. The hole is then covered with an access panel of wood that can be ripped off to let you 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 weight of the old sash and replace it with the new. Be sure to weigh the sash prior to you begin, as the weights that were previously used may be different in size from what is needed. Once the new weight has been installed, run an appropriate length of string through the pulling mechanism. Then, you can attach the string to your boxed frame. Leave a few inches of space at the end of the string to allow for future adjustments.
Sash Cords
In the majority of double-hung windows the chain or cord is affixed to the weights. This helps keep the sashes in the jamb in a balanced manner. Over time, these cords could break, making it difficult to raise the window. A new sash cord can restore the ability to move the sash upwards and downwards and will keep it in its place when it is opened.
To replace sash cords the first step is to remove the access panels from the jambs. These are usually installed by screws or nails and must be removed or repositioned. It may be possible to remove them with the hammer or chisel but it is always best to lay out dust sheets prior to beginning any work.
After removing the access panel, you are able to begin to work on the sash. Take the narrow beads (also called "tie rails") out of their grooves with the chisel or flat bar. It is essential to be patient because they are usually stuck or nailed to the floor. If the sash is still in place, pull the mortise-and-tenon joints out using a hammer or screwdriver and then take out each wood peg. You should be able to move the sash around freely, although it may require oil if it feels stiff.
Determine the length of the sash chain or sash cord required to reach the sash slot at the bottom of the pulley located at the top of the jamb. Cut the cord/chain, and then attach it as described in the previous step. You can use a hammer and screws or nails, however nails are less likely to cause damage.
It's best to leave the original weights if you have purchased a kit to replace the counterbalance. They're not expensive and are easy to install if you buy them from architectural salvage stores. Based on the dimensions and shape of your window you may need to use one or two sashweights in order to keep it open.