Sash Windows Replacements London
At Golden Ratio Windows, we have been offering our top-quality sash windows replacement service to our customers throughout London for many years. Our expert team have both the knowledge and experience to ensure all sash window replacements are carried out perfectly, providing nothing but the best service each and every time!
When Should You Choose Replacement Over Restoration?
While we always prioritize restoration, full replacement is often the most cost-effective and energy-efficient solution if your windows exhibit the following:
Severe Structural Rot
When the box frame or sills have decayed beyond 50%, compromising the unit's longevity.
Energy Efficiency
If you require modern U-values and high-performance vacuum or double glazing.
Structural Integrity
When previous poor repairs have compromised the window's safety and operational mechanics.
Replacing your sash windows with Accoya® timber and vacuum glazing can reduce heat loss by up to 70% compared to original single-paned units.
Our sash window replacement service provides professional manufacturing and fitting of your new sash windows into an existing brickwork opening that previously had your old sash window positioned. Therefore, the opening of your window will still exist, however, the original sash window will be replaced with a newer model, by our team.
At Golden Ratio Windows, we manufacture bespoke sash windows and cater for a comprehensive range of styles, and varied budgets for all replacement windows. We also replace timber shop front windows.
Different property types may require different additionals when undergoing a sash replacement service, allowing us to provide varied options including:
- Traditional Weights and Pulleys or modern Sprung Balances (Spiral Balances).
- Weights and pulleys
- Fully draught proofed windows
- Inner-mouldings matched to your specification
- Sash horns matched to your specification
- Sustainably sourced Softwood, Hardwood, and Accoya® (50-year warranty).
- Oak and specialist timber are available
- Timber is pressure treated with wet rot, dry rot and wood preserve
- Windows are primed with microporous paint unless otherwise requested
- A full painting service is available
Our 12-Point Replication Process
To ensure a perfect heritage match, our joiners measure:
- Sill profiles & Box depths
- Meeting rail height & alignment
- Glazing bar (Astragal) widths
- Traditional Sash Horn shapes
- Inner moulding scribes
- Bottom rail angles
With all replacements, we measure the top rail height, style width, meeting rail height, bottom rail height, bottom rail angle of chamfer, glazing bar width, visible outer face, box depth, sill profile, and much more. This is done to ensure the replacement sash window is a true replica of the original. At Golden Ratio Windows, we even trace the sash horns and scribe the inner moulding. With this level of intricate attention to detail, we are then able to manufacture a perfect replica of your previous sash window, allowing us to meet or even exceed your high expectations!
If you are looking for a professional team to assist you with the replacement of your sash windows, look no further than Golden Ratio Windows in London. Give us a call today on 02034881695 or 07507391329 for a no-obligation quote, or to talk to a member of our team in more depth!
In many cases, repairing existing windows is more cost-effective than full replacement.
Heritage Replacement Services Across London Boroughs
We specialize in navigating the architectural requirements of London’s diverse conservation areas. Our bespoke replacements ensure smooth planning approval for period properties.
- Finsbury Park Replacement
- Islington Replacement
- Hackney Replacement
- Tottenham Replacement
- Stoke Newington Replacement
- Dalston Replacement
- Highbury Replacement
- Holloway Replacement
- Hornsey Replacement
- Muswell Hill Replacement
- Wood Green Replacement
- Southgate Replacement
- Enfield Town Replacement
- Barnet Replacement
- Camden Town Replacement
- Kentish Town Replacement
- City of London Replacement
- Fulham Replacement
Project Media
Video: Bathroom Install
Bespoke bathroom sash replacement featuring privacy heritage glazing.
Full Replacement Gallery
Recent Replacement Projects Across London
We take pride in our precision joinery. Here are a few examples of recent full-house window replacements we've completed:
- Highbury, N5: Full replacement of 8 original sashes with slimline double-glazed timber units to meet conservation standards.
- Hackney, E8: Bespoke Accoya® sash windows installed in a Georgian townhouse, featuring period-accurate horn details.
- Muswell Hill, N10: Sound-reducing acoustic glass replacement for a property overlooking a busy main road.
PERIOD ACCURACY
100% Like-for-Like Joinery
