Heritage Flush Sash Windows are our authentic timber alternative for period homes, cottages and conservation areas across Essex and Suffolk. Slim, timber-like proportions and a flush sash create a balanced traditional appearance, while optional mechanically jointed corners remove the visible weld line and recreate the character of a traditional timber joint.
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Discover what makes this product stand out
Authentic timber-style corner detailing for a traditional finish.
Explore your options
A considered heritage palette with woodgrain and painted options.
Traditional furniture adds the final period detail.
Choose the authentic details that shape the finished window.
Choose a patterned glass design for privacy while retaining natural light.
Our range of high quality hardware is available in many colours and finishes to suit your windows perfectly
Explore design ideas and styles to inspire your project
The elegant flush exterior and decorative interior create that classic aesthetic
Give your character property the finishing touches it deserves
Flush finish inside and out. Versatile and without over complication
Timber-like proportions that suit country cottages.
Traditional shades that complement period brickwork.
Corners that recreate a traditional timber joint.
How we compare to standard high-street installers
Eden Glass
From 0.8 W/m²K
High street
1.4 W/m²K typical1.4 W/m²K typicalEden Glass
Available to PAS 24 / Secured by Design standards
High street
Eden Glass
10-year insurance-backed
High street
1–2 years1–2 yearsEden Glass
Owner-led, in-house team
High street
Outsourced subcontractorsOutsourced subcontractorsEden Glass
4–6 weeks
High street
8–12 weeks8–12 weeksOur Heritage Flush Sash Windows bring authentic timber-replica character to period homes, with a sash that sits flush within the frame. Mechanical joints, run-through horns, traditional rails and decorative bar options recreate familiar joinery details, while low-maintenance PVCu makes everyday upkeep straightforward.
Designed for conservation areas and period homes, our heritage flush sash combines timber-style proportions with mechanical joints, traditional detailing and heritage colours. We can help with planning conversations and discuss your proposals with conservation officers where appropriate. Suitability depends on your property and local requirements; planning or listed-building approval is not guaranteed.
A-rated energy efficiency and a multi-chambered profile help keep your home comfortable, with quality seals to reduce draughts. Our heritage flush sash is available to PAS 24 / Secured by Design standards, with the appropriate specification confirmed for your project. Low-maintenance finishes and our 10-year guarantee provide lasting reassurance.
Detailed specifications and performance information
Answers to commonly asked questions
Peace of mind with our guarantees
PVCu flush casement windows create a sleek, clean face by sitting the opening sash level with the outer frame. They use the same dependable 70mm multi-chambered system, colour palette and secure hardware as our core casement range, making them the modern choice for new builds, extensions and renovations where you want a flat, minimal look.
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PVCu Sliding Sash Windows recreate the authentic box-sash look with smooth spring balances and practical tilt-in sashes for easy cleaning. Add run-through horns, a deep bottom rail, Georgian bars and traditional furniture for convincing period character, backed by A-rated energy efficiency and an available PAS 24 security specification.
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