Sash Window Repairs London
We specialise in sash window repairs in London. All our repairs are comprehensive and come with full warranty for a five year period. If your windows have been neglected, and are in need of some care we will be glad to assist. Our sash window repairs range from:
Repairs we carry out regularly
- Window sill repairs .
- Typically Windows that have rotten section or have weathering require new or spliced repairs.
- We offer both and only repair what is required.
- We will not remove a sill entirely if it can be repaired and structurally good with a smaller, cost effective timber splice repair.
- Replacement sash cords.
- We remove sashes, plane the sashes to fit frame better, we then replace the sash cords checking that the weighting is correct and when rebuilt sashes will be balanced and not slide up and down of their own doing.
- This service is often combined with sash window draught proofing.
- We supply 4mm and 6mm glass as standard and it is in all our mobile workshops.
- It makes sense when replacing sash cords with windows already out to replace the glazing as well.
- Please note we cannot replace glass cost effectively unless combined with overhaul or draught proofing system.
- When putty becomes old and is exposed to the sun it will become brittle, crack and eventually fall out.
- We will remove as much defective putty as possible and then replace with fresh new putty.
- Please note if you intend to decorate shortly after please warn us in advance so we make make a dry compound.
- If you use fresh linseed putty and then decorate the paint will split as the linseed oil seeps out.
- This is normal and cannot be avoided unless dry compound is incorporated.
- Fresh timbers are supplied for parting and staff sections when a window is overhauled.
- This is the only part of a window we will actively replace and is considered a consumable.
- In the event your timbers are in excellent condition we will not replace and merely clean up and refurbish them.
- From start to finish we will splice defective timbers, overhaul, and then draught proof your sash windows.
- We will then provide a comprehensive decoration service.
- We can burn off flakey paint of go right back to original timber and stain.
- The finish is exceptional however please be warned this is not a cheap operation and much better suited to an avid DIY enthusiast at their own pace.
- It’s also worth burning off before we arrive because you may break glass which we can replace as required.
- Much the same as full restoration we fully renovate your sash windows.
- Venetian sash window repairs.
- This type of window has sash cords which run outside of your left and right sashes down into the box either side.
- They look beautiful however because of length of cord and friction become stuck and do not travel freely.
- We make sure when complete your windows function nicely as well as being draught proofed.
- To improve on our sash window service and provide a fuller package we will also refurbish period French doors.
- Warped, draughty, and rotten we will make good and decorate if you require.
- New sash window furniture and security restrictors can be installed.
Why repair rather than replace?
A good repair costs 50–70% less than a new window, preserves the period character of your home, and — done properly — lasts another fifteen years. UPVC replacements rarely last that long and they can knock value off a period property.
Common sash window faults we fix
Broken sash cords
Snapped or frayed cords mean your sash won't stay up. We remove the sashes, re-cord, re-balance the weights and ease the window to run smoothly again.
Rattling sashes
The classic sign that draught seals have failed. Our hidden brush system silences rattles and closes the 3 mm gap between sash and frame.
Rotten sills and bottom rails
We splice in fresh timber, seal inside the joint, resin bond and mechanically fix — an everlasting repair if maintained.
Stuck or painted-shut sashes
We free them without damaging the joinery, replace broken cords or balances, and refit the parting and staff beads.
Perished putty and glazing
Old linseed putty cracks out — we remove defective sections and re-putty, or re-glaze with 4 mm/6 mm glass as part of an overhaul.
Warped, draughty French doors
We refurbish and draught proof French doors alongside sash work to give you a consistent period finish.
Get a free quote
Call 020 3441 6515 or email support@sashwindowsrepairlondon.co.uk. We quote fairly, in person where possible, and stand behind our work with a five-year guarantee.