In most period homes, repairing sash windows is a sound choice because the timber frames are often still in good condition, even when the glass, cords, or paint have worn out. Specialist window suppliers such as Eco Sash & Case carry out this kind of work alongside new installations. This article explains what refurbishment involves and how to decide whether it suits your home.
What Refurbishment Actually Covers
Refurbishment means restoring the existing window rather than swapping it for a new unit. A joiner removes the sashes, repairs or replaces damaged timber and checks that the frame is sound. The joiner then rehangs the sashes so they slide smoothly again. Typical jobs include renewing sash cords, easing stuck sashes, repairing rotten sections and replacing broken glass. Some projects also add draught proofing or fresh paint. The scope depends on the state of each window.
Signs That a Window Can Be Saved
Surface damage looks worse than it often is. Peeling paint, a rattling sash or a window that will not stay open usually points to a fixable fault. You can cut out small areas of soft timber and replace them with matching wood. A simple test is to press a screwdriver gently into the wood at the bottom of the frame. If it sinks in deeply across a wide area, the rot may be extensive. Localised softness, though, is normally repairable.
When Replacement Makes More Sense
Some windows are past saving. If the frame has rotted through in several places, or earlier repairs have failed repeatedly, a new window built to the same design may be the better route. A like-for-like copy can keep the building’s look while giving you a fresh start. A joiner who inspects the windows in person can tell you which route is realistic. Ask for a clear explanation of what is wrong and why. A good survey should give you reasons, not just a price.
Keeping the Character of Your Home
Original sash windows shape a great deal of how a period building looks. Slim glazing bars, old glass, and frame proportions are hard to match with modern materials. Refurbishment keeps these details in place. Where new timber is needed, traditional joinery methods help it blend in. Engineered redwood is one material used for this purpose, as it resists movement better than some solid timber. The aim is a repair that is hard to spot from the street.
Improving Comfort Without Losing the Frame
Old sash windows have a reputation for draughts, but you can tackle this without removing them. Draught-proofing strips fitted into the channels reduce air leaks and rattling. Many owners notice a quieter, warmer room afterwards. Glazing upgrades are another option. Secondary glazing adds a second pane on the inside and can reduce noise and heat loss. Double glazing can sometimes be fitted into existing sashes, although the extra weight and thickness need careful checking.
Listed Buildings and Consent
If your property is listed, or sits in a conservation area, you may need permission to change windows. Listed building consent is required for work that affects the character of a listed building, and local planning authorities set their own expectations. Replacing windows without consent can lead to enforcement action. Check before any work begins. Your local council planning department can advise on what applies to your address. Some joinery firms work with an architect who can help prepare the documents.
Choosing Who Carries Out the Work
Look for a firm with real experience of period windows, not just general glazing. Ask to see examples of similar projects and find out whether the sashes are repaired in a workshop or on site. Workshop repairs often allow a more controlled finish, though some jobs are done in place.
Get a written quote that lists each window and the work planned. Check what is included, such as painting, mastic repairs and making good around the frame. It also helps to ask about timescales, since windows may be out of the building for a short while.
Looking After Your Windows Afterwards
Refurbished sashes last longest with regular, light care. Repaint exposed timber when the finish starts to wear, as bare wood soaks up water quickly. Keep the drainage gaps at the bottom of the frame clear of dirt. A quick annual check takes only a few minutes. Look for cracked paint, loose putty and any sash that has begun to stick. Dealing with small faults early usually keeps costs down and stops damp getting into the wood.