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Sash window repairs - published here - Repair

Sash windows can be out of balance or even break. Pam scours the web for salvaged, wavy glass and keep an eye out for the sash weights that are discarded, made of metal. She then seeks replacements in the form of washers or nuts to help balance her window.

Pam covers each pan with a rope of glazing compound she works into the rabbet groove, or pocket, that is around the opening. This helps to reduce drafts and costly heat loss.

Sashes that stick Sashes

It's a nightmare when your double-hung windows become stuck. You'll lose your view when they squeak during a storm. On the other hand, a window that's too loose can let outside noise and air in and your energy costs can increase. Neither scenario is optimal, but both can be addressed with the appropriate tools and determination.

Paint can build up on the channels of old weighted sash window tracks, causing them to become jammed. Luckily, most issues with this can be resolved by cleaning and lubricating the tracks.

Remove the caulking that was used in the space between the window stop (the one on the inside) and the frame of the window. Scrape off any paint that has been accumulating. Be sure to use a sharp blade, and set up plastic sheets and a vacuum cleaner directly below to catch any paint dust and chips.

You can then clean the tracks with a dry cloth, and apply an oil based on silicone to help them slide better. You can find this in the majority of home improvement stores or online. Then, you can move the sash up or down to test it.

If it continues to stop, the sash cable may be faulty. Check to see if the cord is caught or hanging in the sash or snapped. It is necessary to re-cord the window if this is the situation.

Another reason for the jam could be that a pin that holds the rail in place has fallen out. This can be tricky to repair, and you'll have to consult a professional in most instances.

If a pin hasn't fallen out, but the wood has become swollen or warped it's a good idea to use a wood hardener on it. This liquid dries quickly and can help restore damaged wood. You won't have to take out your sash windows in order to repair them. Once you've used it, you'll be able to break the two sashes by placing a block of wood on the bottom corner where they meet, and tapping it lightly with a Hammer.

Draughts

Draughts can be a concern with old sash window repair, especially during the winter. They are often caused by decaying wood, cracked putty, or worn cords for sash. This allows cold air to seep around the window, making it more difficult to warm your home. You can stop draughts by filling gaps with expanding foam or by utilizing draught-proofing strips that are found in many hardware stores. They are efficient however, you will require replacement periodically because the foam expands with usage.

A alternative that is more durable is Gapseal which is a sponge-like seal that you can cut to the size you require and then put into the gaps between your sash window frame. It can be applied by itself or in conjunction with adhesive strips on the top and bottom of the frame. This option is expensive and you'll need to reapply it over the life of your window. However, it's an affordable fix that is easy to remove.

Cling film can also be used to block draughts. Simply scrunch it and then push it into the gaps that surround your window. This is a reliable draught stopper, but the drawback is that it can block sash travel completely and could pose an hazard to fire. The sash has to be removed to open the window and the clingfilm must be reapplied every time the sash is closed.

As part of a general refurbishment you can have your window draught-proofed. This may include the fitting of new sash string, parting beads and staff beads, the lubrication and rebalancing the weights, fluidization and rebalancing of the pulley wheel. It may also involve staining or painting the frames and the sashes. This will help restore the sash's function and improve its energy efficiency, as well as addressing any minor timber imperfections. It is less disruptive than taking out the windows and can help reduce draughts, increase thermal performance and significantly reduce costs.

Decay

The good news is that your sash window frames are not beyond repair if they have been damaged or degraded. The frames of these windows are generally made of high-quality timber. With the right restoration they can be repaired to ensure high performance for a long time. Regular inspections are key in ensuring that the wood is properly ventilated. This will help prevent the accumulation of moisture that can cause wood decay.

The majority of issues that arise from sash windows are readily apparent, however some are more difficult to spot. In particular, wood decay is a difficult issue to address because fungus can eat away at the wood. It is possible to fix wood that is rotten, however the best way to stop further decay is to ensure the timber is dry.

First, take off any paint from the hardware. The bottom rail and the connecting rail might require removal from the frame (depending on the location of your sash). You'll then have to remove the "pocket covers" which are bits of wood in the side of the frame that are low down that give access to the weights (the parting beads run through the middle of them). You may require a sharp knife to remove them if they are attached by nails or paint. Once the pockets are gone, you can begin to remove any wood rot and apply a good quality water-resistant wood filler. After the filler has dried, the primer must be applied to guard against further decay.

It is recommended to inspect the sash weights within the window as well, to ensure that they are properly balanced and not pulling one side more than the other. If they're not balanced, the sash can slide off its track and could cause damage to the frame. The sash weights can be replaced with new ones or a new mechanism for balancing can be fitted to stop the sashes from swinging to the wrong side of the window frame.

Poor Security

Over time sash windows are exposed to the elements and susceptible to deterioration due to weather and general wear. In time, this may lead to timber decay which in turn will need to be replaced, an expensive repair that has to be addressed as soon as is possible. Wood decay can be spotted by water marks under the window, or by the frame becoming soft to the touch. It is essential to speak with an expert to evaluate the situation and determine if any repairs to the sash window are required.

As time passes the rails at the bottom can also be damaged. The sill may show water marks, or Window repairs a window that is soft to the touch may indicate this. A professional will be required to assess the situation, and recommend any repair of sash windows or replacement.

Triple and double glazed Sash windows do an incredible job at keeping noise pollution from entering your home, so it can be a real cause for worry when they begin to let it in. If this happens the structural integrity could be in danger and the sash windows will have to be replaced.

A typical sash repair issue is when the sash becomes stuck in the frame. It could be due to the sash cord being snapped, or it could be the result of a problem with the sash's the ratchets. If the latter is the case, then a bit of gentle persuasion can usually help the window to be opened again - or alternatively, the ratchets must be reset.

This issue can be solved by taking the sash off and cleaning the tracks. Once the tracks are clean take off any security fittings that could be present. Lastly, carefully removing the sash cords and chains will allow the sash to be removed. The staff bead may be sealed with a draught-proof seal that will reduce draughts. This will also improve the paint finish. The gap between the box and the sash can be filled with decorators caulk to improve the operation of the sash and decrease draughts.