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Sash Window Repair

Sash windows add a touch of class to any home. However, they can also be drafty and difficult to clean due to age or wear. Sash window repairs are a great way of enhancing functionality while maintaining the original elegance.

The first step in sash window repair is to take off the "pocket covers". These are bits of wood that are placed low on the frame, that allow access to the weights.

Sashes damaged by abrasions

If your sash windows have been damaged or leaky and water, you'll need to do more than patch up the surface. A more thorough repair job will save you money in the long run, especially in the case of an older house that has poor insulation. Here are some typical issues with sash windows and the best way to fix them:

Problems with Sticking

It is difficult to shut or open the window in the event that the sash does not fit snugly into the frame. This can result in rattling noises and let drafts into your house.

To fix this, use an utility knife to score and cut off the paint line from the inside side of your sash. Be careful not to scratch the wood. Then, you'll need to apply a sash grease that will allow it to move more smoothly.

Broken Sash Cords

Some double-hung sashes that are old have cotton or metal cords supporting the weights used raise and lower the sashes. Over time, these cords can break, making it difficult to lift or keep the sash up. Follow these steps to repair it:

Then, pull the sash to the right and then remove it from the frame. Cut the cord at the bottom of the sash and remove any nails sticking out from the end. Take the nail off using needle-nose pliers, then insert it back into the side channel. Incorporate the cord knot into the hole, and secure it using a nail set.

Install the beads on the staff and then put them back in the sash. Make sure to leave enough slack on the cords to ensure proper operation. Reinstall the counterweights and balances. Decorators caulk is a good method to minimize draughts. Apply small amounts between the bead boxes for staff.

Glazing putty can be used to repair the sash after it has been repaired. Glazing putty is usually made from linseed oil and chalk. Mix in enough chalk to make the putty usable and not stick to your fingers. Let the putty dry completely before reinstalling the sash, or painting the frame.

Broken sash cords

Old double-hung (two sashes) windows use chains made of metal or cotton attached to the counterweights to help keep the sashes level in the window jamb. As time passes, the chains could break, which stops the sashes from opening or closing, making it difficult to lower or raise the window. Repairing the sash cords is a simple home fix that will solve these problems in less than an hour.

Remove the staff bead which divides the upper and lower sashes. A nail is typically driven through the knot and into the side of the sash casing to hold the bead in place but you should be in a position to remove it by using needle-nose pliers. Remove any rusty nail from the stop beads, and then clean the caulk, old cord residue, and paint around the sash groove.

To open the window, pull one of the cords that run through the sash to raise it up. Once you've pulled it as far as it can be then mark the cord with a pencil and cut it to length using a utility knife. Once you're done, make sure that the new cord is in alignment with the groove on the sash. Also, secure it to the sash with a knot.

If the sash still isn't moving, you can cut the cords using your side cutters. Once the timber sash windows is liberated, you'll have to remove the access panels inside the sash channels, exposing the pulley system and counterweights. If the window is painted, you may need to score the seams using an axe and chisel to remove the access panel without damaging the paint.

Once you've removed the access panel, you'll be able to see the two sash weights made of cast iron inside each pocket. Remove the one on the back and one on the front, and then tie each sash cord to a weight using a self-tightening knot. After you've tied the new cords, you'll need reconnect the sash weights and then reset the pulley system to ensure it functions properly.

Drafts

Sash windows add a bit of the past to older homes but they also present maintenance challenges. They can be difficult or even impossible to close and open with a smooth, quiet operation. They can also be rattled by wind, and letting drafts through. These problems could be caused by painted or swollen wood or sash cords that have rotted. There are several easy and cost-effective ways to address these issues and keep your sash window functioning correctly.

Disassembling an old sash is the first step to repairing it. Take off the sash and frame, and make sure that all components are in good condition. Sand down the wood to make it appear better and prevent drafts. A small amount silicone spray or wax can make the sash slide more easily. If the sash is still stuck using a utility knife, you can use it to cut any paint layers. A new set of tilt pins can make the window more efficient.

Weights are passed over a system of pulleys to balance the weight of the sash window. The weights are typically cast iron and are reached via an access panel or pocket cover located in the inner box lining of the frame. To prevent the weights from crashing down, the dividing strip is suspended within the frame to ensure that they do not collide.

Accessing these weights is tricky, as the upper sash has been painted shut and can be secured by nailing it in the position. If you're patient and careful, you can remove the sash by using bar clamps that are reversed and spread apart, to ease it out of its groove in the rails that meet. You may need to tap and jiggle to loosen it but once it's free examine the sash secondary glazing and replace it if necessary with new rope.

While you're at it you could also replace the balance of the sash to make the window easier to open and close. It's a lot easier than you think to change the balance of a double-hung window. You can do it yourself if have the right tools and a replacement kit.

Rotten sill

In time, the old timbers will become damaged and even the best-maintained windows made of sash window refurbishment will begin to exhibit signs of decay. If the rot only affects the sill of the window, it could be possible to fix it. If, however, it has spread through the frame and into the interior of the home and has caused structural damage it's probably the right time to replace it.

If you've found a decayed sill, it's important to replace it before it causes damage to your window. The first step is to take off the sill plates and studs. If the studs are load bearing they may require you to install temporary supports. After you have removed the sill, take off any remaining paint on the sill plate. Once the sill is clean then replace it with a brand new board and attach it to the studs.

A rotten sill may be ugly and cause future expensive repairs. It could, for instance cause the sash, which is hard to spot to notice, to shift. This can result in cracks, bows or damaged glass pane. In addition, a rotten sill could allow water be able to enter the wall, which could cause mold and other issues.

Replacing a sill that is rotten is not as hard as it sounds. It is essential to maintain your window to avoid rot, therefore you should clean regularly the window tracks and sashes to keep them free of dirt and other debris. Install a seal of protection on the window frames to keep them dry. You can also use a humidifier to control the moisture in your home. This will prevent the wooden sashes from sticking or expanding.

Sash windows are often afflicted by sashes that are stuck. To get them out of the way it is possible to apply a small amount of wax or silicone spray to the tracks of your windows to enable them to slide easily. If the sashes are stuck because of paint buildup, you could make use of a utility knife cut through the layers of paint and release the sashes.

Another method to fix stuck sash issues is to reinstall the parting bead. If the sash is still sticking, you can also try draught-proofing it. This is done by placing an insulating strip of rubber in the spaces between the sash and frame which decreases air flow and enhances the acoustic quality of the window.