Sash Windows

5 Star Reviews

classic British style with modern comfort and low maintenance

Sash windows

Sash windows are a defining feature of period homes across Britain — elegant sightlines, slim meeting rails and balanced proportions that lift any façade. Today’s designs keep that timeless look while delivering warm, quiet and secure living. Our range of sash windows and uPVC sash windows combines authentic detailing with A-rated performance, smooth sliding action and tidy, FENSA-certified installation. Whether you’re planning sash window replacement for a whole house or upgrading a few rooms, we’ll tailor profiles, glazing and colours so everything feels made for your property.

What makes sash windows different?

Sash windows open by sliding rather than swinging. Two framed sashes sit within the outer frame, moving vertically to ventilate without encroaching indoors or outdoors — ideal for pavements, tight gardens and upstairs rooms. Modern sliding sash windows use concealed balances for effortless movement, secure night-vent positions and precision seals that reduce draughts. You get the character of traditional joinery with the everyday benefits of contemporary engineering.

Happy Customers

0 +

Our sash window options at a glance

uPVC sash windows with authentic proportions, slim meeting rails and optional deep bottom rails
Box sash windows for period elegance with smooth, low-maintenance operation
Timber look sash windows that replicate painted wood with realistic woodgrain foils
Heritage sash windows for conservation-sensitive streets, featuring slim glazing bars and discreet hardware

Every option is available in A-rated configurations with double glazing as standard, plus upgrades like acoustic laminates or selective triple glazing for noise-sensitive rooms.

Why homeowners choose uPVC sash windows today

Traditional timber looks wonderful but demands sanding, painting and regular upkeep. uPVC sash windows deliver the look without the chores:

Low maintenance — a wipe-clean frame and a light oil on moving parts keep everything running
Excellent thermal performance with low-E glass, argon gas and warm-edge spacers
Smooth sliding action using modern balances rather than cords and weights
Tilt-in cleaning positions on many models for hassle-free access to exterior glass
Robust security with multi-point locks, reinforced sashes and optional laminated glass

If your original windows are tired, noisy or draughty, sash window replacement in uPVC can transform comfort while preserving kerb appeal.

Heritage-sensitive sash windows for character homes

Living in a conservation-aware area doesn’t have to mean compromising comfort. Our heritage sash windows are designed to respect original architecture:

Fine sightlines that echo 19th-century joinery
Authentic astragal bar layouts, including Georgian and Victorian patterns
Deep bottom rails and run-through horns for period correctness
Wood-effect finishes in popular shades like White Woodgrain, Cream, Golden Oak and Irish Oak

We’ll advise on sympathetic specifications and, if required, help you navigate permissions with clear, supporting details for your local authority.

Box sash windows — authentic style, modern reliability

Box sash windows take their name from the box frame that historically housed cords and weights. Modern versions capture the same visual rhythm while using reliable spring or spiral balances for smooth, controlled travel. Choose equal sightlines for a balanced appearance across bays and multi-light windows, and add traditional hardware — sash lifts, pole eyes and locking fasteners — in finishes that complement your interior.

Energy performance you can feel

Great sash windows do more than look the part. Our systems combine:

Multi-chambered uPVC frames that slow conductive heat loss
Low-E coated double glazing to reflect warmth back into the room
Argon-filled units and warm-edge spacers to achieve low U-values and reduce condensation risk
Precision brush and compression seals to minimise draughts around the sashes

The result is a home that feels warmer in winter, cooler in summer and calmer day-to-day, with fewer cold spots near the glass.

Security without compromise

Security is built into our sliding sash windows. Expect strong interlocks at the meeting rails, robust keeps, high-spec balances and discreet reinforcement where needed. Upgrades include laminated security glass on ground-floor windows and child-safety restrictors on upper floors, so you can ventilate safely. You enjoy period looks with modern protection.

Colours, finishes and details

Beyond classic white, choose subtle neutrals and popular heritage tones. Woodgrain foils create convincing timber aesthetics without the upkeep, and dual-colour options let you keep interiors bright while selecting bolder exterior shades. Finish the look with:

Astragal or internal glazing bars in traditional layouts
Deep cills and neat end caps for crisp lines
Hardware in chrome, satin, brass or black to match handles and door furniture

These details are what make sash windows look original rather than “replacement”.

Request a free home survey and quote for new windows or doors

Glazing options — privacy, solar control and acoustic comfort

Your glass choice shapes everyday living:

Privacy patterns for bathrooms and overlooked elevations
Toughened safety glass for low-level panes and doorside windows
Acoustic laminates to quieten bedrooms facing busy roads or flight paths
Solar control tints for south- and west-facing rooms that overheat in summer

We’ll help you balance light, privacy, sound and cost for each room.

Sash window replacement — how we make it simple

Advice and design
Tell us what you want to achieve — warmer rooms, quieter nights, faithful period style — and we’ll design sash windows that deliver. We explain options clearly and provide an itemised quote.
Detailed survey
We take precise measurements, confirm bar layouts, cill depths and opening configurations, and check for plaster lines and reveals so the finish looks intentional.
Made-to-measure manufacture
Your uPVC sash windows are built to your chosen specification, including colour, glass, hardware and heritage details.
FENSA-certified installation
Our trained team protects floors, removes old frames, installs and seals new sliding sash windows, and tidies thoroughly. You receive your FENSA certificate and warranty paperwork.
Aftercare and maintenance
We show you tilt-in cleaning, locking and vent positions, and share simple maintenance tips. If adjustments are ever needed, we provide responsive support.

Planning, regulations and conservation

Most like-for-like sash window replacement does not require planning permission, but installations must comply with Building Regulations. As FENSA-registered installers, we self-certify compliant work and provide the certificate you’ll need for future property sales. If you live in a conservation area or listed building, we’ll propose heritage sash windows that respect local guidance and advise on any consents.

Costs and value — what affects the price of sash windows?

There isn’t a single price that fits every home because several variables matter:

Window sizes and the number of openings
Bar layouts and heritage detailing such as run-through horns
Glazing specification (standard double glazing, acoustic laminates, selective triple)
Colour and woodgrain foils, including dual-colour combinations
Access, scaffolding and any remedial making-good

We always provide clear, itemised quotations. If you prefer to spread the cost, we can discuss finance options so sash window replacement is manageable without compromise.

Maintenance and lifespan

uPVC sash windows are refreshingly easy to live with. Wipe frames with a mild solution, keep drainage channels clear and oil moving parts lightly once or twice a year. Tilt-in cleaning makes exterior glass straightforward from upper floors. With quality manufacture and careful installation, your sliding sash windows should deliver decades of reliable performance.

Sash windows by property type

Georgian and Victorian terraces: slim bars, deep bottom rails and woodgrain finishes to preserve authentic street character
Rural cottages and farmhouses: timber look sash windows in heritage colours for a warm, lived-in feel
Suburban semis: clean white or contemporary grey for crisp kerb appeal
Modern builds: minimal bars, equal sightlines and neat hardware for a fresh, contemporary twist on tradition

We’ll help you choose combinations that feel natural to your architecture — never forced.

Double glazed vs triple glazed for sash windows

High-quality double glazing suits most sash applications, delivering excellent energy and acoustic performance. Triple glazing adds weight and cost, so we typically recommend it selectively — for bedrooms facing roads, nurseries or rooms exposed to persistent wind. A mixed approach keeps budgets sensible while targeting comfort where you feel it most.

Request a free home survey and quote for new windows or doors

Frequently asked questions about sash windows

How long do uPVC sash windows last?

With quality manufacture and proper installation, expect 20–35 years of service, depending on exposure and maintenance. Regular cleaning and light lubrication keep everything smooth.

Can sliding sash windows be made to look like timber?

Yes. Timber look sash windows use realistic woodgrain foils, deep bottom rails, run-through horns and authentic bar layouts to mimic painted wood convincingly.

Will new sash windows reduce noise from the street?

They can make a noticeable difference. Precision seals and modern glazing cut general noise; for busy roads, specify acoustic laminated glass in bedrooms and living spaces.

Are sash windows secure?

Modern systems include robust locks, reinforced meeting rails and secure keeps. Laminated security glass adds further protection on vulnerable elevations.

Do I need permission to replace sash windows?

Like-for-like replacements usually don’t need planning permission, but Building Regulations still apply. In conservation areas or on listed properties, extra consents may be required — we’ll advise.

Ready to plan your sash windows?

Tell us about your home and goals — faithful period style, better insulation, quieter nights — and we’ll design a tailored specification of sash windows or uPVC sash windows to suit. From measured survey to tidy, certified installation and aftercare, we make sash window replacement simple, sympathetic and built to last.

ARRANAGE A VISIT

Request your FREE
no-obligation
design visit now