REHAU Geneo is a pioneering, high-tech PVC profile system for windows and doors that redefines the benchmarks for energy efficiency, stability and low weight. What sets Geneo apart is its advanced RAU-FIPRO X material, which delivers exceptional strength while removing the need for steel reinforcement in most cases — substantially boosting its thermal insulation. With an 86 mm installation depth and multi-chamber construction, the system reaches remarkable thermal insulation figures that help slash heating expenses to the minimum.
Windows built on the Geneo profile boast superb sound insulation, shielding interiors from outside noise effectively, and deliver a high standard of burglary protection. The profiles' low weight eases installation and handling, while the smooth surface makes upkeep simple. REHAU Geneo opens up broad architectural design possibilities through its diversity of shapes, colors and finishes, enabling bold yet elegant solutions that satisfy the most exacting demands for both aesthetics and function.
Brand

Rehau is synonymous with quality in the world of PVC windows. The German corporation with 75 years of history produces profiles that set industry standards. From economical Euro-Design to innovative GENEO without steel reinforcement — we have a solution for any project.
More about REHAUTechnical Specifications
Details
A pioneering system built from RAU-FIPRO material, with no steel reinforcement, delivering top thermal insulation and strength. HDF.
Specifications and Material:
- Build-in depth: 86 mm.
- Frame composition: Cutting-edge fiberglass composite RAU-FIPRO X. The material yields record-setting strength and rigidity, letting steel reinforcement be dropped in 90% of cases.
- Chamber layout: 6 functional chambers. With no steel reinforcement inside the chambers, the chief "thermal bridges" disappear, making the profile as warm as possible.
- Weatherproofing system: 3 sealing circuits (MD) formed from high-grade RAU-PREN material. The central circuit takes a special shape for top airtightness and an easier closing action.
- Finish: HDF (High Definition Finishing) — a flawlessly smooth surface that keeps dust from settling.
Glazing Choices:
- Greatest glass unit thickness: up to 53 mm.
- Glass configuration: The system is built to take heavy energy-efficient double-chamber glass units and acoustic laminated glass.
- Rebate clearance: 66 mm — for secure hold of heavy glass units.
Tested Performance (per DIN EN 14351-1):
- Frame heat retention (Uf): 0.86 W/m²K (open profile). Thermal modules push this figure further, opening the way to passive house standards.
- Window heat retention (Uw): up to 0.66 W/m²K (with warm units). Certified by the Passive House Institute in Darmstadt (PHZ).
- Noise reduction (Rw,p): up to 47 dB (class 5) without steel reinforcement. The glass never touches metal, which tames resonance.
- Break-in protection: Up to RC2 class without steel reinforcement, up to RC3 class with added reinforcement.
- Mass: Windows built from the Geneo profile come out up to 40% lighter than steel-reinforced equivalents, easing the load on hardware and lengthening its service life.
Rehau Geneo
A pioneering system built from RAU-FIPRO material, with no steel reinforcement, delivering top thermal insulation and strength. HDF.
For a standard 2-sash tilt-and-turn window (1200 × 1400 mm) with basic double-glazed unit.
Compare with Similar Profiles
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Rehau Synego
Rehau Brillant-Design 70
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Kömmerling Xtrem 76 AD
Kömmerling Xtrem 76 MD
Side by side
Head to Head: Closest Competitors
How Rehau Geneo stacks up against the closest matches from other brands.
| Specification | Rehau GeneoThis profile | WDS 8S | Schüco LivIng 82 | Kömmerling AluNext MD |
|---|---|---|---|---|
| Brand | REHAU | WDS | Schüco | Kömmerling |
| Material | PVC | PVC | PVC | PVC |
| Profile depth | 86mm | 82mm | 82mm | 80 mm |
| Chambers | 6 chambers | 6 chambers | 7 chambers | — |
| Glass unit, max | up to 53mm | 44 mm / 52 mm | up to 52mm | up to 56 mm |
| Thermal (Uw) | 0.85 | 0.88 | 0.8 | ≤ 0.8 |
| Sound (Rw, dB) | ≈50 Rw(dB) | ≈48 Rw(dB) | ≈47 Rw(dB) | ≈ 45 Rw(dB) |
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FAQs
Frequently Asked Questions about Rehau Geneo
How does Geneo's steel-free RAU-FIPRO X construction reach Uw ≤ 0.85 W/(m²·K)?
Geneo's 86 mm, 6-chamber profile is built from the RAU-FIPRO X fibreglass composite, whose record strength lets steel reinforcement be dropped in 90% of cases. Removing that steel eliminates the main thermal bridges, giving an open-profile Uf of 0.86 W/m²K and whole-window Uw down to 0.66 W/m²K with warm glazing units.
What is the maximum glass-unit thickness in Rehau Geneo, and what build-ups fit?
Geneo accepts glass units up to 53 mm thick, held in a generous 66 mm rebate clearance for a secure grip on heavy panes. It is designed for:
- heavy energy-efficient double-chamber (triple-glazed) units
- acoustic laminated glass
Is Rehau Geneo genuinely suitable for passive houses?
Yes. Geneo is certified by the Passive House Institute in Darmstadt (PHZ). The base 86 mm profile reaches Uw down to 0.66 W/m²K with warm units, and add-on thermal modules push the figure further into passive-house territory. For the most demanding standards, the dedicated Geneo PHZ variant goes to Uw ≤ 0.73 W/(m²·K).
How much noise does the Rehau Geneo profile block, and why?
With the right acoustic laminated glazing, Geneo delivers up to Rw,p 47 dB (class 5) — around the ≈50 Rw(dB) headline figure for the system. Because there's no steel reinforcement, the glass never touches metal, so resonance is tamed. Its three RAU-PREN sealing circuits (MD) add airtightness that supports the acoustic performance on busy roads.
Where is Geneo not the right choice, and what are its security and weight limits?
Geneo reaches RC2 without steel and RC3 only with added reinforcement, so highest-security applications need that reinforcement. As a windows profile it isn't a sliding solution — for large panoramic openings use Geneo HST instead. Its premium €700–880 cost isn't justified on simple, mild-climate replacements where Euro-Design 70 (Uw ≤ 1.3) suffices.
How does Geneo compare with Rehau Synego and the Geneo PHZ flagship?
Synego is the strong 80 mm / 7-chamber system at Uw ≤ 0.94 and ≈46 dB. Geneo's 86 mm RAU-FIPRO X build betters it at Uw ≤ 0.85, ≈50 dB, 53 mm glazing and frames up to 40% lighter than steel equivalents. Above Geneo sits the Geneo PHZ flagship (A+++, Uw ≤ 0.73).













