10 Unexpected Window Sash Repairs Tips

Window Sash Repairs
Check the windows sashes regularly for damage, mildew, and mold. If you catch these issues early, you can save money on repairs in the future.
The sash is the interior framing that can be moved vertically either up or down in windows that are open. This article will show you how to perform simple sash repairs.
Weather Stripping
Wood window sashes provide an elegant look to your home. If properly maintained, they will last for many years. They can, however, get damaged or deteriorated over time, due to exposure and normal wear. Sash repair specialists can restore windows back to their original condition and keep them looking great much longer than replacement windows.
Weather stripping is the first thing to address when repairing windows with sash. It is located on both the frame and the sash. If it's loose or worn out, it can cause drafts and other issues. Start by identifying the brand of window and the glass manufacturer's date (etched on the corner of the glass, or the aluminum spacers between panes). Take the sash off, and mark its width and height so that you can find a new weather stripping that is compatible with the original.
Then, take the sash from the holder and place it on an even surface that allows you to access all four sides. If your sash has been double-hung, you must remove the weights with their ropes that should have fallen into the pocket in the jamb lining. After you have removed the sash using the utility knife, remove the old weather stripping by hand or with a putty knife.
After the sash has been cleared it is time to replace the parting stops. These are long pieces that split 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 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 knife, and let it dry for at least a day. After the putty has completely cured and dried, you can apply a topcoat of acrylic latex. This coating will protect the putty and give your sash a fresh appearance.
Sash Hardware
The hardware that holds the windows sashes can become worn out over time and use. This could lead to a door or a window that is difficult to open or close. It's a good idea to know that replacing or repairing this hardware is often straightforward and cost-effective. If a sash is difficult to operate, try spraying some grease into the jamb channel, and then slide it open to see if this fixes the problem. If not, the issue is most likely due to the sash balance and you'll have to take off the sash to access this hardware.
Sashes for windows should be able to be able to open and close with minimal effort. However, this can be a challenge if the weights have been worn out or the sash meeting rail is not properly glazed. This could be caused by various reasons, including an absence of maintenance or an unmatched weight rating.
If the hinge arms on the window begin to move, this could cause the sash to drag, and then eventually to hit the frame at the opposite corner (Photo 1). To correct the issue ensure that the sash is in the proper position within the frame opening, and then remove it. If the sash is secured to the hinge arm, you'll need to remove the hinge arm and replace it (Photo 2). Next, install the new sash (Photo 3).
Because of sagging hinges and a general deficiency in energy efficiency, windows that are old particularly those in older homes, can be difficult to open and close. In most instances, a few minor repairs can turn these windows into smooth operation again and save the homeowner money on energy costs.
To make these sash repairs, it's important to have all the necessary tools lined up before you begin. Start by marking the location of the hinge channel on the frame using a pencil (Photo 1). This will assist you in getting the channel back on the correct position after you've finished. Remove the sash, and then remove the hardware including the beads that separate (Photo 2) and the chains or cords which hold it in place. Soften any hardened putty with an electric heat gun set to medium and equipped with a shield for the nozzle. Take off upvc window repair and put it in a bag that is labeled.
Sash Weights
If your window sash repairs are to replace a damaged cord or simply to keep the windows functional, replacing worn out weights on sash can improve sash operation and reduce the energy cost. Sash weights are composed of heavy iron or lead cylinders that are encased in a concealed cavity and connected by ropes to the movable window sash. These weights act as counterbalances, allowing you to open and shut the window without having to use mechanical or electrical devices. When they fail, sashweights tend to be neglected or not used by homeowners.
A weight from a sash that fell out of the cavity is difficult to recover and you'll need to find a replacement that fits properly. You will also require a new piece of string, a length sashcord and a few sashpulleys for tying the new weights to the cord.
Mortise and Tenon joints can be used to join windows made of older wood. The wood pegs that keep the components together can be removed using the use of a pin punch and hammer. The majority of these pegs are big on one side, and smaller on the other. It is important to remove first the smaller diameter sides. Sashes that were made later in the century utilized glue instead of pegs. They can be separated by cutting the glue line using a knife, then tapping the mortised area loose using a mallet.
Once the sash has been released, you can remove sash stops and gain access to the pockets for weights. 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 inside workings.
When the sash has been shut off and the access panel has been removed, you can remove the old weight and replace it. Make sure you weigh the sash prior to you do this, as the old weights could be different in size from what is needed. Once the new weight is installed, tie a string to it and then thread it through the sash pulley. Then attach the string to the boxed frame, but only leave a few inches of string sticking out from the head to allow for future adjustments.
Sash Cords
The majority of double-hung windows with a history have a cord or chain attached to the weights which supports and keeps the sashes in balance within the jamb. Over time, these cords could break, making it difficult to raise the window. A new sash cord will give you the ability to move the sash upwards and downwards and hold it in position when it is opened.
To replace sash cords the first step is to remove the access panels from the jambs. They are typically fixed or screwed in and must be removed or repositioned. It is possible to remove them using an axe or hammer, however, it is best to lay out dust sheets before starting any work.
Once the access panel is removed, you can start working on the sash. Utilize a flat bar or chisel, to pry the narrow parting beads out of their grooves. It's important to be patient because they are usually wedged or nailed in place. If the sash is still in place, pry the mortise-and-tenon joints out with a hammer or screwdriver and then take out each wood peg. It should now be possible to move the sash back and forth without difficulty, though it may require lubrication if it feels stiff.
Measure the length of sash chain/sash cord required to reach the sash slot on the bottom of the pulley located at the top of the jamb. Cut the cord or chain and fix it as described in the previous step. You can employ a hammer and screws or nails, but nails are less likely to cause damage.
Unless you've bought a kit that replaces the counterbalance system that was in place before, it's recommended to keep the original balancing weights in place. It's not too expensive to purchase these from salvage shops for architectural purposes and they'll be easy to install once you've got the sash unlocked. Based on the size and shape of your window you may require one or two sashweights in order to keep it open.