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Window Sash Repairs

Many homeowners don't pay much attention to window sashes as long as they are capable of being opened and closed and keep the air inside and the outside air out. Over time windows sashes get worn out and cause drafts, air leaks, or even sashes to become stuck.

With a sash propped on a homemade easel, the author works glazing points into a gap. He also scrapes paint off and then applies a wood preservative to the frame.

Sash Weights

If your windows aren't opening and closing in a smooth manner or are sticking due to a problem with the counter-balancing system, it's possible that a could be at fault. This could be due to a missing or damaged sash cord/chain or an unattached or misaligned sash weight, or a broken pulley.

The sashweights are small boxes made of cast iron that support the counter-weight system and help support the sash. They are situated in the bottom rails of each window frame and are covered with an access panel of wood which can be opened to reveal their location. The panels can be removed for access to the sash weight pockets for cleaning, repairs or replacement.

If you've had sash windows for some time, it's likely that you have a problem with weights on the sash that cause them to sag or catch. This can be caused by the weights being too heavy (they are supposed to be a bit heavier than the top sash) or because they were installed in a way that isn't correct (some users have disabled their weight systems by cutting them off and taking the weights out to save money or turn them into scrap metal).

To fix this problem take out the stops (the trim that runs along the inside of the window at the point that it joins the frame to keep it in place). Place them aside. This will require you to be gentle so as to not scratch the profile of your meeting rails. Then you can employ a mallet or hammer to separate the rail and stiles and check the rails for damage or any repairs that must be done.

Once you've inspected the stiles and rails, lay down dust sheets and then begin working on the sash itself. Start by removing wood pegs using a pin-punch and a hammer or screwdriver from the mortise-and-tenon joints. Once the pegs are gone you can begin disassembling the sash by taking out the sash stop moldings, pulling off any sash cord knots still connected, and then removing the sash itself.

The next step is to weigh the sash to determine how much weight it will require for functioning. You can find old weights for replacement on the internet or at a few home improvement stores, but you should be sure to purchase the right size to ensure not to overload or underweight the sash.

Sash Cords

Often sash window problems stem from worn or broken sash cords. Sash cords are constantly under stress from the weights, which can cause them to break over time, particularly when they're not maintained correctly. If cords break, sashes will no longer open and close easily. The problem may be caused by excessive force, ageing, lack of maintenance, or the accumulation of moisture. During window sash repairs, it's important to replace the old cords with new ones that are made from a material that will last and resist moisture.

Start by removing the interior stop strips, the thin wood strips that hold the sashes into place, using a utility blade and a chisel. Pry the stops out of the sashes with care and be on the lookout for any cracked or broken ones. After removing the stops, you can access the weights on the sash by opening the jamb or taking out the weight pocket.

Accessing the sash's cords requires a little more work but it's not a problem with the right tools and perseverance. First, remove the old cords by cutting them close to their knots and pulling them free. Then, take the sash from the frame and put it aside. When the sash is removed then pull it back down on the staff bead (the nail that keeps the sash from falling) and insert the nail, which is about 1 foot into the hole in the staff bead. This will stop the sash from falling as you finish stringing the counterweights.

Reattach the sash strings after installing the upper sash. Check that the sashes move smoothly and are balanced. Then, reinstall the lower sash and repeat the process, checking that the sashes are correctly seated and moving smoothly.

After you've installed the counterweights, reconnect the sash cords, by inserting an sash cord into the pulleys, and then threading the cord's other end through a knot hole inside the sash to secure it in the correct position. Repeat the procedure for each side of the sash until all cords are replaced and the sashes are operating normal.

Drafts and air leaks

As time passes, the materials that seal sash windows to your frame begin to degrade creating drafts and energy loss. A thorough inspection can reveal problems and help you choose your casement window sash sash repair options. Your comfort level and skill level will determine if you are able to manage your own repairs or need professional assistance with window sash repair. The scope of work is also influenced by history of the property's condition and structural integrity.

If cold air is coming through a drafty window or window, your furnace will be forced to work overtime to heat your home. This inefficiency is a drain on your heating costs and reduces the efficiency of your HVAC system. Additionally, drafts can disrupt your indoor comfort and can degrade indoor air quality by forcing in outdoor pollutants, allergens and humidity.

A drafty window is evident by the feeling of cold air coming into an area, even though all doors and windows are shut. Other signs to be aware of are changes in temperature near the window, as well as condensation on the frame or sill.

It is good to know that fixing drafty windows is a simple task that can reduce your energy bills and improve indoor comfort. First, look at the outside of the window. Examine for bare wood and areas where the caulking has cracked, opening the gap to cold air.

Examine the sash's connection to the frame, including the parting bead and staff bead. Examine the condition of weather stripping (felt strips or foam tape) at these points to determine if it's intact and functional. If not, it needs to be replaced.

Finally, consider the state of glazing putty, a hard putty that holds panes glass in place. Examine for cracks or crumbling that exposes the sash's surface to moisture which can cause mold problems and damage the windows' glass.

To resolve the problem, apply a layer of fresh glazing putty onto the inside of your window. Utilizing a flat-blade screwdriver push the glazing points into position to secure them. Wrap a piece of fabric and foam around each point. This will act as insulation against cold air.

Aesthetics

Window repair for sash windows can give older windows a fresh look at a lower cost than a complete casement window sash replacement. A complete window replacement can be an expensive and time-consuming project, especially for older homes. Restoring window sashes is a great way to restore the beauty of your home and value.

Monitoring the condition of windows sashes is essential to avoid major issues. If you're not sure if your windows are in need of repair it's recommended to have them inspected by an expert. The cost of repairing a sash is typically lower than the expense to replace the entire window, and it can help reduce your energy bills as well.

The first step is to lower the upper sash towards the bottom - this is usually easy and will allow you to get a clear view of the "parting beads" (these are grooved pieces in the meeting rail on either side that keep the two sliding sashes apart). Remove these with the blade of a small bar or a putty knife they are typically nailed in place and glued by paint, so you need be careful not to damage them or the sash.

After removing the beads that separate, you'll have to remove the covers for your pockets. These are small pieces of wood that are screwed to the frame at the bottom. They permit access to the sashweights. Once they are removed, the sash can be moved up and down to check that it is moving smoothly.

If it does not, there could be a problem with the counterweights or the sash cords. Once you've checked all of these, you can repair them if needed.

Wooden windows have a natural beauty that blends with both traditional and contemporary interiors. They can also be made to be highly customizable with a variety of paint and stain options. Wooden windows require regular maintenance to avoid rot and damage.