FIBRANgeo B-040 | Stone wool for masonry, roofing and dry construction
Stone wool insulationDescription
The FIBRANgeo B-040 flexible stone wool board is a natural, inorganic, fibrous mineral wool thermal insulation material, manufactured in accordance with EN 13162. It combines, in a single layer, superior thermal insulation (λD = 0.034 W/mK), fire resistance class A1 and high sound absorption (αw = 1.00 – Class A), for masonry, dry construction systems and roofs.
ARGYNET LAB: At ARGYNET, we do not simply supply stone wool — we substantiate the choice. FIBRANgeo B-040 performs correctly only within a complete building system (framework – insulation – cladding), and our team supports engineers, architects and contractor crews in devising the appropriate solution by application.
Overview
Key Features
- Excellent thermal insulation — declared λD = 0.034 W/(mK)
- Non-combustible material — reaction to fire class A1 (EN 13501-1) with high fire resistance
- High sound absorption & sound insulation — αw = 1.00 (Class A), NRC = 0.95
- Excellent vapour permeability (μ = 1) — dehumidification of building elements & passive ventilation
- Water-repellent & non-hygroscopic (WS < 1 kg/m², WL(P) < 3 kg/m²)
- Fibre softening point > 1000 °C — protection of the structural core in the event of a fire
- Dimensional stability, easy to cut and install
- Natural, inorganic, odourless, chemically inert and recyclable (EUCEB certification)
Available coatings (on one side): AL (aluminium foil reinforced with glass mesh) · YM (black glass fibre) · YA (white glass fibre) · XA (Kraft paper). The uncoated product complies with the stated technical specifications.
Where it is used
Technical solutions where this material is used.
Related Products
KNAUF TYPE A 12.5mm | Standard plasterboard
Category: Structural boards for dry construction
FIBRANgeo B-050 | Stone wool for masonry, roofing and dry construction
Category: Stone wool insulation
Knauf TN Plasterboard Screws | Sharp
Category: Dry construction fixings, screws and accessories
Knauf UW track 50x40x0.6 mm
Category: Metal profiles for dry construction