Lag bolts are fasteners used to connect wood securely, often for decking and other structures. They have a large head and externally threaded shaft, and are tightened with a tool. They generate strong clamping force and come in various sizes and materials. A lag bolt, or lag screw, is a type of fastener used to […]
Fireproof lumber is treated wood used in construction to reduce the incidence of loss of property and life from fires. It is treated with fire retardant chemicals, but cannot be used arbitrarily and must go through a system of approval due to potential health effects. The effectiveness of fireproofing lumber depends on the treatment used […]
Vapor retardants limit water vapor movement in structures to prevent mold and mildew growth. They are used in walls, ceilings, floors, crawl spaces, and basements. Vapor retarders can be installed during new construction or added later, and should not be applied to both interior and exterior walls. Air barriers should be used in conjunction with […]
Flame retardant fabric is more resistant to fire than other fabrics, either through chemical treatment or manufacturing. They reduce the spread of fire but are not fireproof. Natural and manufactured fibers can be used, with the latter being more durable. Flame retardant fabrics are commonly used in firefighter overalls. Flame retardant fabric, also commonly called […]
