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Window Sash Repairs

The majority of homeowners don't think too much about window sashes -- as long as they are closed, open, and keep outside air out and the air inside in. Over time windows sashes become worn out and lead to drafts, air leaks, or even stuck sashes.

The artist uses an sash supported on an easel for working glazing points into the gap. He also scrapes paint off the frame and then applies wood preserver.

Sash Weights

If your windows aren't closing and opening smoothly, or are stuck in a stuck position, a malfunctioning counterbalancing system could be at fault. This could be due to an ailing or damaged sash chain or a sashweight that is not aligned properly or not attached to a sashweight, or a broken or cracked pulley.

The sashweights are tiny boxes made of cast-iron, which balance the counter-weight system and support the sash. They are located in the bottom rails of each window frame, covered by an access panel made of wood which can be opened to reveal their whereabouts. These panels can be removed for access to the sash weight pockets to clean, repair or replacement.

If you've been using sash windows for a long time, you may have an issue with the sash weights that cause them to lean or catch. The weights could be too heavy (they should be a bit heavier than the top sash) or they've been installed improperly.

To correct this issue, first pry off the stops (the trim along the inside edges of the window where it joins the frame and keeps it in the frame) and set them aside. You'll need to do this slowly so as not to harm the shape of the two rails. Then, you can use a hammer or mallet to break the stiles from the rails and examine them for damage or for any repairs that must be done.

After you've checked the stiles and rails, lay down a few dust sheets and begin working on the sash itself. Begin by removing the wood pegs from the mortise and tenon joints with pin punches and a screwdriver or hammer. After the pegs have been removed you can begin to disassemble the sash by removing the sash stop moldings, pulling off any sash cord knots still connected, and then removing the box sash window itself.

The next step is to weigh the sash to determine the amount of weight it needs for proper functioning. You can find old replacement sash weights online or at some home improvement stores, but ensure that you purchase the correct size so as not to under or over weigh the sash.

Sash Cords

Most sash window issues stem from damaged or worn sash cords. Sash cords endure constant stress from the weights, which can cause them break over time, particularly when they're not maintained correctly. The sashes won't be able to open or close as easily if the cords break. The issue could be caused by excessive force, ageing, lack of maintenance, or the buildup of moisture. During window sash repairs it is essential to replace the old cords with new ones that are made of an material that lasts and resist moisture.

Begin by removing the inner stop strips, thin wood strips that hold the sashes into place, using a utility blade and a chisel. Pry the stops from the sashes with care, and keep an eye out for any broken or cracked ones. After the stops have been removed, you will be able to access the sash weights through an access panel that is cut into the frame's bottom or by opening the jamb and taking off the weight pocket cover.

Accessing the sash's cords requires some effort however it's not too difficult with the right tools and perseverance. First, take off the old cords by cutting them near their knots and then pulling them out. Then, you can remove the sash from the frame and put it aside. After the sash has been removed then pull it back down on the staff bead (the nail that prevents the sash from falling) and insert one nail that is about one foot long into the hole for the staff bead. This will temporarily stop the sash from slipping away while you finish stringing the counterweights.

Reattach the sash string after installing the upper sash. Verify that the sashes move smoothly and are in a balanced position. Then, install the lower sash and repeat the process, checking that the sashes are correctly seated and moving smoothly.

Reattach the sash cable after you have installed the counterweights. Thread the cord through the pulleys, and then through the knot hole in the sash. Repeat this process for the opposite side of the sash, making sure that the sashes work as intended again.

Air leaks and drafts

Over time, the materials that connect your sash window to the frame of your home begin to degrade. This can cause drafts and energy loss. A thorough inspection will identify the trouble spots and assist you in determining your window sash repairs options. Your comfort level and skill level will determine if are able to self-manage or require professional assistance with window repair. The scope of work required is also affected by the historical property status and the structural integrity.

If cold air is able to enter through a drafty window your furnace is forced to be working overtime to keep your home warm. This can result in higher heating expenses, and can compromise the efficiency of your HVAC system. Moreover, drafts disrupt your indoor comfort and degrade the quality of indoor air by pushing the infiltration of outdoor pollutants, allergens, and humidity.

A common sign of a drafty window is the feeling of cold air in your room regardless of all windows and doors being closed. Other indicators to look out for include an increase in the temperature of your home near the window, and condensation on the frame or sill.

It is good to know that fixing drafty windows is a relatively simple job that can lower your energy costs and enhance the comfort of your home. The first step is to inspect the window's exterior. Look for bare wood and areas where the caulking has cracked, opening the gap to cold air.

Examine the sash's interface with the frame. This includes the parting beads, and the staff bead. Check the condition of weather stripping in these areas (felt strips or tape) to determine if they're intact and effective. If not, it's going to need to be replaced.

Examine the condition of glazing putty. It's a hard putty used to hold panes of glass that has been tempered in place. Check for cracks and a crumbling surface that could expose the sash's exterior to moisture. This can cause problems with mold and damage to the glass.

To fix the problem, apply a layer of fresh secondary glazing sash windows putty to the inside of your window. With a flat-blade screwdriver push the glazing points in place to fix them. Then wrap a piece of foam and a fabric around each point to create an insulation layer against cold air.

Aesthetics

Window sash repairs can give old windows a new look with less expense than a complete window replacement. A complete replacement of windows can be an expensive and time-consuming task, especially for older homes. Repairing window sashes is a great way to restore a home's original beauty and value.

It is important to keep an eye on the condition and wear of window sashes in order to avoid major problems. If you're unsure whether your windows require repair it's best to have them evaluated by a professional. The cost of a sash repair is often much lower than the expense to replace the whole window, and it can help save you money on energy bills in the process.

The first step is to lower the upper sash to the bottom. This is usually simple and will allow you to get an unobstructed view of the "parting beads" (these are grooved bits in the rail that connects either side that keep the 2 sliding sash window locks sashes apart). They can be removed using the help of a small pry-bar or a putty-knife. They are typically put in place with nails and then painted, so you need to be careful not to harm them or the sliding sash.

After you have removed the parting beads, you'll have to remove the pocket covers. These are bits of wood inside the frame, low down, that allow access to sash weights. They are usually attached with nails. They may also be snagged with paint so you need to be careful. After the nails are removed then you can move the sash upwards and downwards to ensure it moves smoothly.

If it does not then there may be an issue with the counterweights or the sash cords. After you've checked them all you can repair them if necessary.

Wooden windows have a natural beauty that blends seamlessly with modern and traditional style interiors. The options for staining and painting are endless. However, wooden windows require regular maintenance to avoid damage and rot.