Classic Vertical Sliding Sash 
Windows for Period Homes
Document Q & PAS 24 Certified
Sliding sash windows combine traditional British architectural charm with modern thermal engineering. Unique Windows supplies and installs market-leading sash systems—including ECOSlide, Roseview Ultimate Rose, and handcrafted Meranti hardwood profiles—tailored for residential properties and commercial developments across Surrey and London.
Roseview & ECOSlide Systems
A+ Rated Thermal Performance
Tilt-In Easy Clean Facility
Visit our Carshalton showroom to inspect operating Roseview, ECOSlide, and timber sliding sash models in person.
Specify authentic mechanical timber joints, 35mm slim meeting rails, decorative astragal bars, and period hardware.
Authentic Woodgrain Foils & Bespoke RAL Colours
Select from classic Chalk, Cream, Foiled White, Crystal White, or realistic woodgrains including Golden Oak and Irish Oak. Dual-colour combinations are available to complement interior room design while maintaining traditional exterior aesthetics.
A+ Rated Energy Efficiency & Sound Reduction
Fitted with low-E softcoat double glazing, warm edge spacer bars, argon gas cavities, and optional acoustic laminated units to deliver superior thermal insulation and effective external noise attenuation.
Anti-Jemmy Cill Protection & Period Hardware
Engineered with an extruded anti-jemmy bar in the cill, key-operated sash locks, travel restrictors, and authentic hardware in chrome, gold, antique brass, or satin black. Full Document Q compliance available.
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Authentic Design.
Sliding sash windows engineered for thermal efficiency, security, and effortless operation.
Tilt & Clean Function
Heritage Craftsmanship
Advanced Security
Forging strong partnerships with respected construction leaders highlights our ability to perform on large-scale developments that require huge logistical oversight and the ability to always meet our deadlines.
Technical Guidance
Find expert technical guidance regarding sliding sash mechanisms, conservation compliance, security, and project delivery.
A sliding sash window consists of two sashes (top and bottom) that slide vertically within a outer frame. Movement is assisted by spring balance mechanisms or traditional weights and pulleys. Modern sashes also tilt inward for simple interior cleaning.
Yes. Systems like Roseview Ultimate Rose feature an ultra-slim 35mm meeting rail, mechanical timber-look joints, run-through horns, and deep bottom rails specifically designed to meet Article 4 conservation guidelines.
Our sash windows incorporate an extruded anti-jemmy security bar in the cill, key-operated cam catches, toughened safety glass, and travel restrictors that limit opening to 100mm for child safety and anti-burglary protection.
Yes. Respected leaders of construction recognise us for our quality and reliability. We forge strong ongoing relationships on large-scale developments that require huge logistical oversight and the ability to always meet our deadlines.
Visit our family-run showroom at 2 Westmead Corner, Westmead Road, Carshalton, Surrey, SM5 2NZ. We serve homeowners, architects, and developers across Carshalton, Puttenham, Guildford, Redhill, and Greater London.
All installations include a comprehensive 10-year guarantee. As a FENSA-registered installer, Unique Windows ensures full compliance with UK Building Regulations and energy performance standards.
