Sash Windows
For decades, we have crafted high-performance sash windows designed to suit period and modern homes across the capital. From Georgian townhouses to contemporary refurbishments, every window is made to order, with options that meet heritage regulations, deliver lasting insulation, and respect the details that matter.
Why Choose Our Sash Windows
Every sash window we supply is bespoke, built in the UK, and designed with London homes in mind.
Whether you’re in a listed building or a terraced house in a conservation area, our team understands what’s required – architecturally and legally.
We don’t retrofit. We replace the entire window and frame to ensure strength, insulation, and proper operation. From cords-and-weights to spiral balance systems, every detail is considered. Heritage profiles, traditional horns, and slimline glazing come as standard.
All installations are carried out by experienced teams who specialise in working with period buildings. And with long guarantees on timber, glazing, paintwork, and hardware, your investment is protected for decades.
Explore Our Sash Window Types
Each of our sash window types is made to order and can be customised further with glazing, hardware, and finish options. Explore the full range below.
Crafted in the UK using durable, sustainably sourced Redwood or Red Grandis. Choose from spiral balance or cords-and-weights operation, with full frame replacement for long-term performance. Traditional mouldings, sash horns, and hardware options available.
Specifically developed for listed buildings and sensitive conservation areas. Available with 14mm slimline double glazing or 8mm vacuum units that exceed triple glazing for thermal and acoustic performance. Features include lambs tongue mouldings, run-through glazing bars, and custom horn profiles.
A low-maintenance, energy-efficient alternative to timber. Our Classic range features run-through horns and welded joints, designed to blend into traditional or modern settings. All models are reinforced, double-glazed and available in a range of foils and finishes.
Designed to replicate the look and feel of original timber sash windows. Includes mechanical joints, run-through horns, and deep midrails for an authentic appearance. A strong choice for older properties not governed by conservation restrictions.
Built for conservation areas and heritage-led refurbishments. This range features slim 35mm midrails, chalk-matt woodgrain foils, mechanical joints, and authentic detailing throughout. Finished with optional sash horns and traditional mouldings.
Built Around Your Home
Our team has years of experience working in and around London, and can assist with applications for listed buildings and properties in conservation areas.
Every window is made to order, allowing us to match original features like sash horns, mouldings, and glazing bars precisely. Whether you live in a Georgian terrace in Islington, a Victorian villa in Richmond, or an Edwardian semi-detached in Wimbledon, we’ll make sure the new windows feel like they’ve always belonged.
Materials, Finishes, and Glazing Options
We offer a choice of sustainably sourced timbers: European Redwood for stability, or Red Grandis for a finer grain and premium finish. All timber windows can be finished in any RAL colour, with a full range of stains and dual paint options available.
Glazing can be tailored to suit your needs – choose from slimline, vacuum, acoustic, or triple glazing, depending on the property and performance required. For added detail, a wide selection of traditional and contemporary ironmongery is available in multiple finishes.
Our Process
From first call to final fit, we keep things straightforward. Here’s how it works:
01 Consultation
We’ll discuss your plans and answer any questions.
02 Site Survey
A detailed survey ensures everything fits perfectly.
03 Design & Quotation
You’ll get a clear, bespoke quote with no guesswork.
04 Bespoke Manufacture
Your windows are made to order in our UK workshops.
05 Installation
FENSA-certified fitters carry out the work with care and minimal disruption.
06 Aftercare
You’ll receive full guarantees and ongoing support if you need it.
Guarantees and Aftercare
We build windows to last, and back that up with long-term guarantees.
- 30-year guarantee on timber
- 10 years on glazing and paint finishes
- 5 years on hardware
After installation, we’ll provide a care pack with simple maintenance guidance to help you get the best from your windows year after year. And if you ever need support, our aftercare team is on hand.
Ready to Start?
Book your free home survey or visit our showroom to explore the range in person. Our team can guide you through options, answer planning questions and help you get started.
Don’t forget – we also offer a referral reward for every successful introduction.
FAQs
How long does it take to get new sash windows installed?
From initial consultation to completed installation, most projects take 8–12 weeks. This includes your site survey, bespoke manufacturing, and fitting. Timings can vary depending on the size and complexity of the job.
Do I need planning permission for new sash windows?
Not always. We can advise based on your postcode, and if planning is required, such as in a conservation area or a listed building. We offer support with the application process as part of our service.
Can I see your windows before ordering?
Yes. We recommend visiting our showroom to view sample windows, finishes, and hardware in person. You’ll be able to compare timber and PVCu options side by side and speak to our team directly.
What areas do you cover?
We install sash windows across London, Greater London and parts of Surrey. This includes areas like Richmond, Islington, Wimbledon, Clapham, Chiswick, Kingston, and beyond.
Are your windows FENSA certified?
Yes. All installations are FENSA-registered and comply with current UK building regulations. You’ll receive a FENSA certificate and full documentation after the work is complete.
How do I care for timber sash windows?
We provide a maintenance guide and care pack after installation. With proper upkeep, such as occasional cleaning and annual checks, your windows can last decades. Paint finishes are guaranteed for 10 years, with timber covered for 30.
What if I can’t replace my windows – do you offer alternatives?
YYes. If full replacement isn’t permitted, we offer secondary glazing systems that install discreetly inside your existing windows. It’s a smart solution for improving insulation and soundproofing in listed properties.