
From technical specifications to project delivery, Thermawool supports every stage of your build with premium A1-rated stone wool products and expert guidance.

Explore our full range of A1 fire-rated stone wool insulation products — RAINCLAD, DIMCLAD, WALLCLAD, FRAMECLAD and FLOORCLAD — each designed for specific cladding applications.
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Access comprehensive technical documentation including data sheets, installation guides, BIM files, declarations of performance and specification support.
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Use our online technical tools including U-Value calculators, condensation risk analysis and specification wizards to design the right insulation solution for your project.
Use the toolsEvery Thermawool board is Euroclass A1 non-combustible — precision-manufactured stone wool engineered for the most demanding cladding and floor specifications. Browse the full range below.
A high-performance, non-combustible stone wool insulation board for ventilated rainscreen façade and external cladding systems. Manufactured from natural volcanic basalt, it delivers reliable thermal performance (λ 0.035 W/mK), Euroclass A1 fire resistance and effective acoustic absorption on buildings of any height — including over 18 m.