F52 Polymer Reinforced Adhesive. STYCCOBOND F52 is a polymer reinforced gum spirit adhesive, designed to provide a rigid setting bond for the installation of carpet and linoleum. It is protected against bio-degradation and is suitable for use over normal underfloor heating installations. STYCCOBOND F52 can be used for securing a wide range of fibre bonded/needlepunched carpets, unitary and hessian backed carpets and linoleum. See the F. Ball Recommended Adhesives Guide for details of specific floorcoverings. STYCCOBOND F52 can be applied to STOPGAP smoothing underlayments, structurally sound, smooth, dry subfloors of concrete and sand/cement screed, plywood, flooring grade chipboard and hardboard. STOPGAP waterproof surface membranes, sound flooring grade asphalt and other non-absorbent surfaces must be skimmed with a minimum of 3mm of the appropriate STOPGAP smoothing underlayment.