uPVC
uPVC Rio Inline Windows
The Rio inline sliding window features an opening sash that sits flush with the outer frame, giving a sleek and seamless appearance. Ideal for rooms where outward-opening windows are not practical — above kitchen worktops, along walkways, or in rooms facing public paths.
Features & Benefits
Flush Fit Design
Opening sash sits flush with the outer frame for a seamless look
Space-Saving Slide
Space-saving horizontal slide operation — no outward projection
Precision Track
Smooth precision track operation for effortless use
Full Colour Range
Full Rehau colours and woodgrains available
Multi-Point Locking
Multi-point locking security as standard
A+ Energy Rating
A+ energy rating with double or triple glazing
Our Installations
Technical Specifications
Frequently Asked Questions
What are Rehau Rio inline sliding windows?
The Rehau Rio is a flush casement inline sliding window with mechanical joints and a heritage timber-look appearance. The sash sits flush with the outer frame, providing a sleek design and space-saving operation.
Are Rehau Rio windows suitable for conservation areas?
Yes — the Rehau Rio's timber-look design with mechanical joints makes it an excellent alternative to traditional timber windows in conservation areas. Available in heritage colours including Chartwell Green, Anthracite Grey, and Turner Oak.
How do Rio inline windows open?
They slide horizontally along a precision track — no outward or inward projection, making them ideal for restricted spaces.
Are Rio inline windows secure?
Yes — PAS 24 certified with multi-point locking fitted as standard, plus toughened safety glass options.
How energy efficient are they?
Rehau Rio inline windows achieve an A-rated energy rating with multi-chamber profiles and double or triple glazing.
What guarantees do you offer?
The Rehau Rio system — engineered to replicate traditional flush timber casement aesthetics — carries a 10-year manufacturer warranty on profile integrity, mechanical sash joints and heritage-grade colour finishes including Chartwell Green and Anthracite Grey. Vitrum Solutions provides FENSA registration on every Rio installation and adds a 10-year CPA insurance-backed guarantee on the fitting work.
Related Guides
In-depth advice from the Vitrum Solutions blog to help you choose with confidence.
Rehau 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.
ReviewRehau Windows Review UK: Are They Worth It in 2026?
Honest Rehau windows review for UK homeowners — TOTAL70 system, A+ energy rating, PAS 24 security, colour options, costs and pros vs cons explained.
GuideFlush 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.
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