POLAROOF RAC is a single component urethane, modified with bright aluminium flakes and fire retardant chemicals.  It is especially designed as a waterproofing membrane for all kinds of roofing. POLAROOF RAC is tough and elastic with a high tensile strength and good puncture resistance, and contains corrosion‐inhibiting pigments for protection against rust and acid rain. POLAROOF RAC is approved by Underwriters Laboratories® (UL) and Factory Mutual Research Corporation® (FM).