A structural engineer gave me a header design using beams made from LVL 1.9. Looking around, I'm seeing more LVL 2.0 available locally. What is the difference?
LVL is laminated veneer lumber. The numbers 1.9 and 2.0 refer to the Modulus of Elasticity which is a measure of the stiffness of the beam. I would seriously doubt that there is any meaningful difference between 1.9 and 2.0 rated beams.