Laminated Veneer Lumber: also known as LVL is the most widely used of the structural composite lumber products. It is produced by bonding thin wood veneers together in a large billet so that the grain of all veneers is parallel to the long direction. The LVL billet is then sawn to desired dimensions depending on the construction application. Some of the products many uses are for headers and beams, hip and valley rafters, scaffold planking, and the flange material for prefabricated wood I-joists.
Small openings on the exterior of your home can allow for significant energy loss. Caulk around openings for electric, gas, oil and water supply lines, drainage pipes, plumbing for outside spigots, cable TV and telephone cables. Dryer vents, mechanical ventilation system vents and combustion air supply vents for furnaces should also be sealed.