uPVC
uPVC Flush Casement Windows
Combine traditional flush aesthetics with modern uPVC technology. Our Rehau flush casement windows feature sashes sitting perfectly flush with the outer frame — ideal for period homes, conservation areas, and anyone who appreciates timeless design with 21st-century thermal performance.
Features & Benefits
Traditional Flush Appearance
Sash sits flush with the outer frame for a classic timber-like look
Conservation Approved
Conservation area approved for heritage and listed properties
Multi-Chamber Profiles
Rehau multi-chamber profiles for superior thermal insulation
Full Colour Range
Full colour and woodgrain range to match any property style
Easy-Clean Hinges
Easy-clean friction hinges for simple maintenance
FENSA Registered
FENSA registered installation with building regs compliance
Our Installations
Technical Specifications
Frequently Asked Questions
What are Rehau flush casement windows?
Rehau flush casement windows have sashes that sit level with the outer frame when closed, creating a smooth, flat, timber-look appearance that closely replicates traditional timber windows.
Are they suitable for period homes?
Yes — Rehau flush casement windows are specifically designed to replicate the appearance of traditional timber windows and are regularly approved for conservation areas and period properties.
What is the difference between flush and standard casement windows?
Standard casement windows have sashes that protrude from the frame. Rehau flush casements sit perfectly level with the frame for a sleeker, more traditional appearance.
How energy efficient are uPVC flush casement windows?
Our Rehau flush casement windows are A-rated, achieving U-values from 1.2 W/m²K with multi-chamber profiles and double or triple glazing options.
What guarantees do you offer?
Rehau Rio inline flush casement profiles include a 10-year manufacturer warranty covering the steel-reinforced 70mm frame, multi-chamber profile integrity and welded corners. Each installation is FENSA registered for Building Regulations Part L compliance, and we extend a 10-year CPA insurance-backed guarantee on the workmanship — the same insurer-underwritten cover required by FENSA-registered installers.
Related Guides
In-depth advice from the Vitrum Solutions blog to help you choose with confidence.
Flush Casement Windows UK: Cost, Suitability & 2026 Guide
Flush casement windows sit flat with the frame for a clean, traditional look. This guide covers the difference from standard casements, cost, conservation area rules and whether they are worth the premium.
ComparisonFlush Casement vs Standard Casement Windows: Which Is Right?
Detailed comparison of flush casement and standard casement windows in uPVC and aluminium — looks, performance, cost, best-use cases, and which is right for your UK property.
ReviewRehau Rio Flush Casement Windows: The Complete UK Guide
Complete guide to Rehau Rio flush casement windows — timber-look design for heritage and conservation areas, mechanical joints, colours, PAS 24 security and UK pricing.
CostsHow Much Do uPVC Windows Cost in the UK? 2026 Pricing Guide
Complete 2026 uPVC window cost guide — Rehau TOTAL70 casement, bay, sliding sash and French door prices, energy savings, FENSA certification and what affects your quote.
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