Selleys Liquid Nails Heavy Duty is an advanced high performance construction adhesive which means mechanical fasteners can be removed after 8 hours*. The non slump formulation also offers extreme strength and durability, even when bonding two non-porous materials. It can be used on most building substrates.| 2 times more strength than Liquid Nails(R) Original in less than half the time.| *Fast speed of cure means mechanical fasteners can be removed after 8 hours on porous surfaces, compared to 24 hours for Liquid Nails(R) Original.| No drip, slump or stringing, even when applying a bead to overhead surfaces.| Excellent resistance to water and weather makes it suitable for interior and exterior applications.| Strong bond that is flexible enough to respond to building movement.| Easy to extrude from the cartridge at low winter temperatures.