Dorli
English — United Kingdom
Rehau Geneo — Composite Engineering
The glass fiber composite born in aerospace and used in Formula 1.
Today, at the front of your home.
RAU-FIPRO® Composite
Origin
REHAU developed RAU‑FIPRO® for applications where ordinary materials are not enough: aeronautical structures, Formula 1 components, engineering at the absolute limit of what matter can do.
Decades later, that same composite technology forms the core of your Dorli door — without a single steel rod, without thermal bridging, without compromise.
Profile Architecture
The cross-section of the Rehau Geneo profile reveals 6 hermetically sealed air chambers — each an additional thermal shield. The walls are made of RAU‑FIPRO®: the composite provides the structure, the air provides the insulation.
Schematic cross-section — Rehau Geneo, installation depth 86 mm, 6 chambers
Thermal performance — Frame (Uf)
Uf of the Rehau Geneo RAU‑FIPRO® profile
This is the thermal transmission value of the profile frame alone — an absolute record for a PVC profile, made possible by the absence of steel reinforcement and the 6 sealed air chambers.
By comparison, a standard PVC profile with steel insert oscillates between 1.3 and 2.0 W/(m²·K). The Geneo outperforms most solid wood profiles.
* Uf values in W/(m²·K). Source: REHAU Geneo technical data sheets and manufacturer data. Indicative values.
Structure RAU‑FIPRO® — 6 chambres d'air
Sans armature acier · Isolation maximale
Glazing Systems
Every Dorli glazing is assembled with a WarmEdge warm-edge spacer — eliminating the peripheral thermal bridge and reducing condensation at the glass edge.
Insulating double glazing — argon — WarmEdge
VSG laminated safety glass — argon — WarmEdge
The WarmEdge spacer reduces thermal conductivity at the glazing perimeter by 55% compared to a classic aluminum spacer (ψ ≤ 0.034 vs 0.075 W/(m·K)). Result: less condensation, less heat loss, an overall improved door Ud value.
Overall performance — Complete door (Ud)
The Ud measures the door as a whole: frame, panel, glazing, spacers. That’s the number that matters in your energy audit. Here are the Dorli values by configuration.
* Ud values in W/(m²·K). Data REHAU, EN 14351-1 and manufacturer sheets. Indicative values — depend on exact configuration.
Regulatory compliance
Legal minimum threshold for new construction until 2021
Environmental regulation in force since January 2022
Low Energy Building label — renovation and construction level
The world’s most demanding standard. Dorli full panel: Ud = 0.75
The Passivhaus config. (Ud 0.75) is achieved with the full opaque panel without glass insert.
The standard glazed config. (Ud 0.87) exceeds BBC, RE 2020 and RT 2012.
Our doors are designed with a high-performance composite structure, built to last over time, resist climatic variations and maintain exceptional dimensional stability.
To fully preserve these qualities, rigorous installation is essential.
That is why we recommend installation with complete removal of the existing frame.
This method allows complete integration into the masonry, optimal sealing and lasting stability — particularly in environments exposed to strong thermal variations.
A premium door deserves an installation at the same level.
The technology is here.
8 models. RAU-FIPRO® composite. WarmEdge glazing.
Custom-made. Delivered in 4–6 weeks.
