Applications > Application > Floors > Soffit Lining Soffit insulation Kingspan has insulation suitable for insulating under structural ceilings (soffits). This insulation is most commonly used in applications such as car park ceilings for large domestic or commercial, industrial or leisure projects. Kooltherm K10 FM Soffit Board Insulation for structural ceilings (soffits) Read More about Kooltherm K10 FM Soffit Board