Major Brand Underlayment - QuietBoard 90sft, $139.99 USD/Box, LL Flooring (Lumber Liquidators)

Dense panels made from recycled fiber board. Its construction reduces noise impact, enhances stability, and minimizes plank flex for solid and comfortable floors. Integrated film provides moisture protection and thermal reflection. Functions as an acoustical and impact noise barrier. Adds insulation, boosting energy efficiency. Closes gaps between trim and flooring. Lightweight and easy to cut with a utility knife. Improves performance for flooring with attached pads. Maintains structural integrity. Crafted from 100% recycled materials and compatible with in-floor heating systems. Made in the USA.