LIQUID NAILS Subfloor and Deck Construction Adhesive (LN-602) is a specially formulated weatherproof-grade adhesive for interior and exterior construction, offering easy cold weather gunning ability. Penetrates wet, frozen and treated lumber. Ideal for bonding common building materials to concrete, and can bridge gaps up to 3/8 inch. Certified by PFS Corporation, an independent, third-party laboratory to meet the requirements of the APA AFG-01 specification for adhesives for field gluing subflooring. Exceeds ASTM C-557.