Window Sash Repairs
Sashes for windows must be inspected regularly for signs of mold, mildew and other damage. If window repair catch these issues early you can save money on future repairs.
The sash is an interior frame that can move vertically up and down in windows that open. This article will teach you how to do a variety of simple repairs to the sash.
Weather Stripping
Wood window sashes add an elegant look to your home. When properly maintained, they will last for a long time. However, they can be damaged or degraded over time due to exposure to elements and normal wear and wear and tear. Fortunately, sash repair specialists can bring your windows back to their original condition and maintain their appearance for a longer period of time than replacement windows.
The first step for repair sash window damage is to fix weather stripping, which is found on both the sash and frame. It can cause drafts if worn or loose. Begin by identifying the window's brand and the manufacturer's date (etched on the glass's corner or on the aluminum spacers between panes). Remove the sash, and mark its width and height so you can find a replacement weather stripping that matches.
Then, remove the sash and set it on a work surface so you can access all four sides. If your sash has been double-hung, you must remove the weights with their ropes that should be buried within the jamb lining. Once you've taken the sash off, use a utility knife to remove the old weather stripping at the corners, and then take it off by hand or using a putty knife.
Once the sash has been cleared, you can install the stoppers that separate the two sashes. These are long pieces that divide the sashes. Pam prefers to use standard 1/2-inch by 3/4-inch window trimmings from the lumberyard. But, you can substitute with a scrap piece of wood.
After removing the stopper for the parting and trimming it to length after which, apply a thin layer of glazing compound over the bottom of the sash. Smooth the compound with your putty knife and let it dry for a minimum of a day. After the putty has completely cure it is possible to apply an acrylic latex topcoat. This will help protect the putty and give your sash a fresh appearance.
Sash Hardware
The hardware that holds window sashes is susceptible to wear and tear due to the wear and tear of use and the result could be a door or window that won't open or close easily. The good news is that repairing and replacing this hardware is typically relatively easy and affordable. If a sash isn't easy to operate, try spraying some lubrication into the jamb channel, and then slide it open to see if it resolves the issue. If the issue continues it's likely the sash balance. You will need to take off the window sash to reach this hardware.
The ideal situation is for window sashes to move open and shut without effort, however, this can be a difficult task when the weights wear out or if the sash's meeting rail isn't properly coated. This issue can be due to many factors that include the lack of maintenance or a mismatched weight rating.
If the hinges on the window begin to move, this can cause the sash drag, and then eventually to hit the frame in the opposite corner (Photo 1). To address this issue, first make sure the sash is squarely inserted into the opening of the frame and then remove it from the window. If the sash has been screwed to the hinge arm, you'll need to remove the hinge arm and replace it (Photo 2). Install the new sash (Photo 3).
Due to sagging hinges, and a general lack of energy efficiency, old windows, especially those in older homes, can be difficult to open or close. In most cases, a few simple repairs can transform these windows into smooth operation again and save the homeowner cash on energy costs.
It is important to have 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 put the channel in the correct place when you are finished. Then, remove the sash and take off the hardware including the beads that separate (Photo 2) and the chains or cords that hold it in place. Soften any putty that has been hardened with an electric heat gun set to medium and equipped with a shield for the nozzle. Remove the old sash and place it in a bag with a label.
Sash Weights
Sash weights can be changed to improve the operation of your window sash and reduce energy costs. Sash weights consist of heavy lead or iron cylinders that are encased in a hidden cavity and are connected via a rope to the movable window sash. These weights function as counterbalances, which allows you to open and shut the window without the need for mechanical or electrical devices. The sash weights are usually neglected or ignored by homeowners, and are turned into scrap when they break; therefore, you may need to search for replacements.
It's not easy to retrieve a sash-weight that has fallen from the cavity, so you'll need to find one that fits properly. You will also require a new piece of string, a length of sash cord and some sash pulleys to tie the new sash weights to the sash cord.
Mortise and Tenon joints are used to join older wood windows. Hammers and pins can be used to remove the wood pegs holding the parts together. Most of these pegs have a large diameter on one side and a smaller one on the other, which is why it is important to remove the smaller-diameter sides first. Later sashes made use of glue instead of pins. They can be separated by using a knife or a mallet.
After the sash is released, you can remove the stops on the sash and get access to the pockets for weights. This is usually done via an opening at the bottom of every jamb. The hole is then covered with the wooden panel which can be removed to reveal the inner workings.
When the sash has been shut off 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 first, as the weights you have might not be the correct size. After the new weight is installed, you can thread the string through the sash pulling mechanism. Then nail the string to the frame, but leave a few inches of string protruding from the head for future adjustment.
Sash Cords
Most double-hung windows of the past come with a chain or cord attached to the weights which helps keep the sashes balanced within the jamb. Over time these cords can break, making it difficult to raise the window. A new sash cable can restore the ability to raise and lower the sash and ensure it stays in place when opened.
The first step in replacing cords for sash is to locate and remove the access panels in the jambs. They are typically screwed or nailed in and require removal. You may be able to employ a hammer and chisel to remove them however, it is always best to lay down dust sheets before starting any work.
After removing the access panel, you are able to begin working on the sash. Take the narrow beads (also known as "tie rails") out of their grooves with flat bar or chisel. It is important to be patient as they're often stuck or nailed to the floor. If the sash remains in place, pull the mortise-and-tenon joints out with a hammer or screwdriver, then remove each wood peg. You should be able to move the sash around freely, though it might require oil if it feels stiff.
Determine the length of sash chain/sash cord required to reach the sash slot at the bottom from the pulley located at the top of the jamb. Cut the cord/chain and then attach it in the previous step. You can do this with nail, hammer or screws. However nails are less likely than screws to cause damage.
If you don't have 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 cheap to purchase them from a salvage store and they'll be simple to install once you've got the sash open. Based on the size of your window one or two sash weights might be required to keep it open.