Titebond Heavy Duty Construction Adhesive is a versatile adhesive that exceeds the APA's AFG-01 specification. It is designed for a wide range of construction applications including wet, frozen and treated lumber. It is also ideal for metal, brick, concrete, mirrors, ceramics and most large panel-type substrates. Titebond Heavy Duty fills gaps and irregularities between materials and provides a more solid backup surface. It reduces the amount of nailing and helps eliminate squeaky floors. It also offers excellent water-resistance and remains permanently flexible.