Introduction
Kömmerling introduces proStratoTec technology, offering sustainable window solutions by eliminating the need for steel reinforcements in PVC-U windows. This innovation uses glass-fibre reinforced PVC-U, reducing the weight of window profiles and enhancing sustainability.

Innovative Material Bonding
The tri-extrusion process combines PVC virgin material, regrind, and glass-fibre reinforced PVC-U into a single window profile, enhancing durability and sustainability.

Coloured Windows for Passive Houses
The Variant 88 centre seal is certified by Dr. Feist's Passive House Institute, allowing for coloured windows that meet passive house standards.

Major Weight Reduction
The new sashes weigh approximately 25% less than those made with steel, facilitating easier handling and installation.

Thermal Insulation
By removing steel, the thermal insulation value improves to Uf = 0.79 W/(m²K), meeting passive house standards.

Choice of Variants
Sashes with proStratoTec can be used in both the 88 double seal system and the centre seal system, offering flexibility in design.

Sustainability
All materials are recyclable, contributing to environmental sustainability. The technology provides excellent thermal insulation and allows for coloured passive house windows, combining aesthetics with eco-friendliness.

Contact Information
For more information, contact profine GmbH, Kömmerling at Zweibrücker Straße 200, 66954 Pirmasens, Germany. Tel: +49 (0) 6331 560, Email: [email protected], Website: www.koemmerling.com