LVL Timber Beams: Why Builders Are Switching to Engineered Strength Laminated veneer lumber or LVL contains a combination of thin wood sheets. They are perfectly glued together to overcome the limitations of conventional timber. Knots and grain-related issues are a common concern for people who rely on conventional timber. Moisture also damages them. You should not worry about these issues when using LVL timber beams. The stability of beams will improve to make them more efficient to handle heavy loads. For more information:https://medium.com/@advancedtimber.au/lvl-timber-beams-why-builders-are-switching-to-engineered-strength-2d43f7663321