LOCTITE PL Subfloor Foam Construction Adhesive is a heavy-duty, polyurethane-based adhesive engineered to bond subfloor panels to joists for a quick install and reduce floor squeaks. The innovative collapsing gel foam expands slowly to fill gaps and create a solid, long-lasting bond in dry, frozen, or damp conditions. It offers a higher yield than traditional construction adhesives, reducing product waste, and supports sound and thermal insulation. Easy to apply, its ideal for wood-to-wood assemblies and delivers superior hold on common building materials like OSB, plywood, concrete, and masonry.