Authentic Sash Windows
Preserve the character of period homes with our hand-crafted sash windows. Fully functional, thermally efficient, and FENSA registered.
The Heritage Choice For Listed Properties
Sash windows are iconic features of period architecture. Two vertically sliding frames allow you to open the window from top or bottom — perfect for controlling ventilation and maintaining period authenticity.
Our sash windows combine traditional aesthetics with modern thermal performance. Made to order in your exact specifications, fully functional, and indistinguishable from originals.
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✓Authentic Design — Hand-crafted frames with traditional glazing bars and period-correct details.
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✓Fully Functional — Smooth-running vertical sliding mechanism with traditional sash cords or modern friction stays.
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✓Thermally Efficient — Triple glazing option available with A-rated energy performance.
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✓Listed Property Approved — Meets conservation officer requirements for period homes.
Built to Your Specification
Choose the material, glazing, and hardware that matches your home's heritage.
Timber Sash
Traditional painted timber frames in any colour. Period-authentic and timeless.
- ✓ Authentic period look
- ✓ Custom paint colours
- ✓ Traditional sash cords
- ✓ Hand-glazed option
uPVC Sash
Modern uPVC with traditional appearance. Low maintenance, high durability.
- ✓ No painting required
- ✓ Period-style glazing bars
- ✓ Smooth operation
- ✓ White, black, or wood grain
Aluminium Sash
Slim frames, maximum glass. Contemporary heritage look.
- ✓ Slimline profiles
- ✓ Any colour finish
- ✓ Modern aesthetic
- ✓ Maximum daylight
Why Choose Sash Windows?
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✓Listed Property Approved — Conservation officers recommend our sash windows for period homes.
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✓Period Authenticity — Indistinguishable from originals. Heritage charm maintained.
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✓Smooth Operation — Effortless vertical sliding with traditional or modern mechanisms.
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✓Modern Efficiency — Thermal performance matches modern double/triple glazing.
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✓Customisable — Choose materials, colours, glazing, and hardware.
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✓FENSA Registered — Compliant with Building Regulations.
Technical Specifications
Glazing Options
Double or triple glazing. Low-E coatings available.
Energy Rating
Up to A-rated with triple glazing.
Lead Time
4–6 weeks for bespoke manufacture.
Warranty
15-year guarantee on all components.
Sash Windows — Frequently Asked Questions
Yes. Our sash windows are designed to meet conservation officer requirements and are regularly approved for listed properties and conservation areas. We work with planning authorities to ensure compliance.
Sash windows open vertically (up/down), while casements open outward like a door. Sash windows are more traditional and period-appropriate, while casements offer more modern operation. Both can achieve the same thermal efficiency.
Absolutely. Our sash windows are available with triple glazing and Low-E coatings, achieving A-rated energy performance while maintaining traditional appearance.
With proper maintenance, timber sash windows can last 30+ years. uPVC and aluminium versions are even more durable, requiring minimal maintenance. All come with a 15-year guarantee.
Timber sash windows require periodic painting and maintenance. uPVC and aluminium sash windows are virtually maintenance-free — just occasional cleaning.