Lanos Isolation carries out the passive fire protection of steel, timber and concrete structures by sprayed rock wool, together with fire-rated plasterboard smoke-extraction ducts, acoustic correction, thermal insulation and condensation control across Normandy and the Rouen area. The company holds QUALIBAT qualification 7143, sécurité passive incendie, alongside 7141 for insulation by blowing and 7142 for insulation and acoustic correction by projection — the recognised French trade qualifications for this work.