Energy Efficiency
Modern double glazing reduces heat loss and improves year-round comfort.
Timber sash windows,
made for London.
15Years
1,000+Installed
10yrGuarantee
— Our craft
Windows built to last generations
We combine traditional joinery with engineered timber and slim double glazing — so your home keeps its character and gains modern comfort.
· FENSA registered· Listed-building experience· Park Royal workshop
— Why homeowners choose us
Trusted across London
15+
Years experience
Specialising in London period properties since 2008.
1,000+
Windows installed
From single replacements to whole-house refurbishments.
FENSA
Compliant
Self-certified to building regs — no council hassle.
10yr
Guarantee
On manufacture, installation and finish.
— Our timber sash window styles
Three centuries of London
Three centuries of London
glazing, faithfully reproduced.
Each profile is drawn from period reference and rebuilt with engineered timber, draught-proofing and slim-line double glazing.
1714 — 1830
Georgian Sash Windows
Elegant six-over-six glazing for townhouses and heritage properties across central London.
Glazing
6 over 6
Best for
Townhouses
U-value
1.4 W/m²K
Timber
Engineered Accoya
1837 — 1901
Victorian Sash Windows
Two-over-two bays and terraces with sash horns and period-correct ironmongery.
Glazing
2 over 2
Best for
Terraces
U-value
1.4 W/m²K
Detail
Sash horns
1901 — 1914
Edwardian Sash Windows
Six-over-two layouts for early 20th-century homes — classic aesthetics with modern performance.
Glazing
6 over 2
Best for
Edwardian semis
Acoustic
36 dB Rw
Profile
Slim-line
— Advantages of our production
Built for London
Built for London
weather, London longevity.
We engineer period windows to outperform the originals on every measure that matters.
Longevity
Engineered timber construction ensures stability through the UK climate.
Eco-friendly Material
Sustainably sourced timber with a lower carbon footprint than uPVC.
— Our process
Four steps,
Four steps,
one clear contract.
From the first phone call to the final pane fitted — you deal with the same small team.
Step 01
Free Consultation
We discuss your needs and provide initial guidance and a clear quotation.
~ 30 minutes
Step 02
Detailed Survey
Precise measurements and confirmation of all technical details.
~ 1 day
Step 03
Bespoke Manufacture
Custom-made in our UK workshop to match your home's style.
3 — 5 weeks
Step 04
Professional Install
Installed with minimal disruption and a flawless finish.
1 — 2 days
— Before & After
Real London sash window
Real London sash window
transformations.
Drag the handle to compare — restored character, comfort and value.
Before
After
— Customer testimonials
What London
What London
homeowners say
Twelve sashes replaced across our Victorian terrace — immaculate finish.
EL
Eleanor H.
Homeowner · Islington
Conservation officers approved the specification first time.
JA
James C.
Homeowner · Notting Hill
Request a free quote
Tell us about your property and we will respond within one working day.
— Frequently asked questions
Answers before you call
Typically 60–90 minutes for an average flat or house. We measure every opening to 1mm, photograph profiles, and review ironmongery and paint. The survey is free with no obligation.
Yes. After survey we issue an itemised, fixed-price quotation. No day-rates, no surprise extras. The only variations would be client-requested scope changes signed off in writing.
Usually within 7 working days. For listed-building projects, we book up to 4 weeks ahead because the survey is more involved.
No, anywhere inside the M25.
— The team
Fourteen people.
Fourteen people.
One standard.
Joiners, surveyors and installers — no agency staff on site.
Mark Whitcombe — Founder & surveyor.
Helena Park — Heritage lead.
Dmitri Volkov — Workshop foreman.
— Ready to start?
Free survey,
Free survey,
fixed quote.
Speak to our team for a free survey and written quotation anywhere in London.
Phone
+44 20 7946 0021
Email
[email protected]