A novel and two-component system which expands to produce a lightweight and closed-cell foam for protecting metallic structures from corrosion and providing thermal & subzero cool-to-touch insulation properties Note: To achieve the recommended foam growth and level of performance, it is advised that Belzona 5871 be applied onto metallic substrates at temperatures in the range of 41 °F to 104 °F (5 – 40 °C). Note: Belzona 5871 uses Belzona 1511 as rebuilding material for substrate pit filling or stripe coating. It can also be overcoated with Belzona 3211 for U.V resistance and/or fire resistance.