QuietBoard Underlayment Installation Instructions

QuietBoard Underlayment is designed for use with floating vinyl plank, laminate, and engineered wood flooring products. The sound reduction underlay system is easy to install and is suitable for use over most types of industry-approved subfloors (3/4” plywood, concrete, OSB flooring, etc.).

Subfloor Preparation

All wood and concrete subfloors must be flat within 1/8” over a 6’ span, or 3/16” over a 10’ span. All seams of QuietBoard must meet this requirement as well. Be sure the subfloor is clean, smooth, and free of dust and debris. All areas must be checked prior to installation.

Installations by method

Floating Installation:

QuietBoard can only be floated when paired with a 4mm or thicker floating floor covering.

1. Begin laying panels of QuietBoard perpendicular to the flooring direction, butting them tightly
2. Panels need to be staggered at approximately 50%, eliminating a grid-style layout
3. 1/4″ Expansion gap is to be left at all perimeter walls
4. All continuous/linear seams must be taped using quality duct tape, a minimum of 2 inches wide
5. Install flooring perpendicular to QuietBoard according to the flooring manufacturers.

Glue Down Installation:

Glue down installation is required for planks less than 4mm thick

1. Begin by troweling a good quality pressure-sensitive adhesive using the recommended trowel size from the adhesive manufacturer
2. Lay panels of QuietBoard perpendicular to flooring direction, butting them tightly
3. QuietBoard panels are to be installed while the adhesive is still wet.
4. QuietBoard panels need to be rolled with a 75lb-100lb roller to ensure a full bond is made.
5. Panels need to be staggered at approximately 50% eliminating a grid-style layout
6. ¼” Expansion gap is to be left at all perimeter walls
7. All seams need to be properly prepared in accordance with the flooring manufacturer’s recommendations. Failure to properly prepare seams will void all warranty.
8. We do not recommend taping seams in glue-down installation.
9. Install flooring perpendicular to QuietBoard according to the manufacturer’s specifications