Sash Window Repair
Sash windows can be extremely damaged from age and neglect. Cosmetic damage may require a replacement. However, functional problems such as draughts or rattles are indications that a sash window requires to be repaired.
Steam the sash first to loosen it. Next remove the wood pegs with a pin punch and hammer. Note and label all the components to ensure that they can be replaced in the correct manner.
Wood that is broken or rotten
If left unattended, rotting timber can start to erode brickwork and damage plaster around the window. The good news is that a lot of the time, this issue can be fixed without having to replace the entire window.
First, ensure that the wood is dry. It is crucial to check the grain and color of the timber to determine if it's solid and unaffected by damp. If the wood appears soft and brown, it is likely that it has rot. Check if the sash's position is secured by a few spliced pieces of timber and that they aren't damp.
Moisture trapped in the corners of sash frames is another common problem. If this is the case, it can cause sash frames to bind and become difficult to open. To solve this problem, clean the sash channel and eliminate any obstructions using the sharp edge of a chisel. Once the sash channels are free of obstructions and dirt, they can be primed to avoid any future issues with damp.
Also, it's worth examining the timber used to make up the window frame. It is best to use wood that has a similar grain pattern and colour to the existing wood pieces otherwise it could be difficult to blend the joins. You may also want to think about using a wood preservative, which will aid in keeping the wood in good shape and help prevent decay.
If the timber of your sash window is severely damaged and rotten it may be wise to replace it entirely. If you choose to replace them, it's important to choose the replacement that has the same design as the windows you have to ensure that it's as beautiful when it's installed in your home. The choice of UPVC over timber for instance, may reduce the value of your home as potential buyers may think you're going against the old style.
Faulty Sash Hardware
A sash is made to move smoothly, however wood rot or other issues can often affect its functionality. A window that isn't functioning properly can also cause drafts in the home and the loss of energy efficiency. The longer you leave a sash-window unattended and it wears out more quickly. This can reduce its lifespan significantly and may result in water or moisture infiltration.
If a sash window isn't functioning properly, it can be frustrating and difficult to pinpoint the source of the problem. In many cases replacing the sash may be the solution. Replace one or both of the windows if the issue is caused by rotting wood, misalignment, or an imbalance.
Replacing a single window sash is less expensive than replacing both the frame and glass. sash windows repair can also be a more straightforward project than installing a new double hung window, which requires the removal of a larger amount of trim and parts. Start by looking at your current window and frame if you wish to replace the sash. There may be gaps and issues that could cause the sash tilting and prevent it from remaining up.

In the majority of cases, it is possible to fix double-hung sashes by cutting off the trim and working from the inside of the frame. First, you must remove the interior sash stops that create a track on the side of the window that is on the bottom. To do this, spray a hose with water and lightly mist the inside the stop. Then, pry it off with a utility knife. After that, using a razor blade to cut off any nails protruding through the the interior stop.
If yours doesn't have one you can make a new access hole by cutting a rectangle into the jamb liners of vinyl to the height of the stile of the sash. If the frame you have doesn't come with one, you can create an access hole from scratch by cutting a rectangle in the jamb liners made of vinyl to the height of the stile for the sash.
Sash Weights That Aren't Working
The two weights that pull the sash up and down can become disconnected from one another as time passes, resulting in the sash becoming jammed, or stuck in an open position. This is typically caused by damaged or worn-out cords that pull the sash, which must be replaced.
During this repair job it is important to lay dust sheets wherever it is possible to stop any dirt or debris from getting into your furniture or carpet. This is especially important when you plan to lift or move the window during your work.
Begin by carefully removing each bead from the frame on either side using an extremely thin and wide chisel. You should notice a groove running along each side of the sash, which will eventually end with an opening for knots, which is where the new sash cord will be placed. Take out any knots from the old cord nailed or glued into the hole.
Now you're ready to start replacing the sash cords, starting with the top sash. To do this you need to lower the sash slowly until it hits the bottom sill. It can be supported by the wood on either side of the frame. Otherwise it could fall to the floor, causing damage to the glass.
Then, remove the access panel to the frame and take the sash weight and sash cable. Once you have the sash weight removed, remove the dado from the wood's edge and insert the nail to secure it. Make sure that the nail is long enough to reach the pocket of the sash as otherwise it won't fit.
Once you have placed the weight, you can replace the sash by feeding the cord through the hole. Then, push the sash onto the rails, down into the windowbox, and then test how it opens/closes. If needed you want to increase the lubrication on the rails (we recommend silicone spray for vinyl, or candle wax for wooden sashes).
Replace both cords. Make sure they're the same length, so that when you take one off the pin, it can slide through the sash and then rest at the pulley, which will allow the sash to function normally. When the sash is again hung you can then reconnect the stop beads and your sash will be complete!
Glass that is damaged
A stray ball, a broom handle, or an object thrown by the lawnmower are often enough to smash a window. Broken glass can allow water, snow, rain and insects into the home. In some instances, the damage caused by glass that has shattering could require a complete window replacement. However, replacing windows is a significant, costly home improvement project. In most instances, replacing damaged window panes can be an easier and less costly alternative.
Before you attempt to install new glass, it is important to ensure that you carefully examine the sash. This is an opportunity to discover any previously unnoticed areas where the wood is beginning to rot or where old weather stripping, glue and other hardware have deteriorated. This inspection will save you time and money in the future.
Once the glass is removed it's an ideal idea to give the wood a thorough coat of homemade wood preservative. To make it, mix equal parts mineral spirits and Linseed oil. Apply the mixture using a putty blade to the surface of sash, and let it completely dry. This will ensure that your brand new glass and sash will remain water-resistant and durable for an extended period of time.
If the sash is in good shape it is possible to fix it without having to remove the glass. The first step is to take off the window stop. It's a horizontal piece of wood that is located above the stiles of a window frame. The window stop is fixed by a small pry-bar that is placed over a putty blade with an incredibly stiff blade. After removing the stop, you can separate the stiles and rails using the woodworking hammer or a soft-faced hammer. This will prevent damage to the profile. The next step is to remove the muntins. They are the vertical and horizontal pieces of wood that make up each glass pane inside a sash.
Once the muntins are removed, it's easy to replace the glass that has been broken. Insert the metal tabs of each new pane into the slots in the sash, and then use glazing compound to hold them securely in place.