How to install underlayment for vinyl plank flooring

How to Install Underlayment for Vinyl Plank Flooring

How to Install Underlayment for Vinyl Plank using QuietWalk Luxury Vinyl

Floating Floors Installation Video

All wood and concrete subfloors must be flat within 1/8″ over a 6′ span, or 3/16″ over a 10′ span. All areas must be checked prior to installation.

General Information

Product may be installed over:

  • QuietWalk Luxury Vinyl Underlayment be used over any subfloor approved by the finished floor covering manufacturer
  • Suitable with Radiant Heat Systems

Recommended Uses:

  • Residential applications on all grade levels
  • Floating Vinyl, Laminate and Engineered Wood Floors
  • Commercial double glue applications (4mm or thicker flooring)
  • Interior use in dry, heated areas

Subfloor and Preparation:

  • All subfloors must be flat, clean, smooth and dry
  • Sand any rough surfaces and/or uneven jobs
  • Fill any cracks on concrete or panel joints wider than 1/8″ using a recommended patch/leveling product

Installation Methods

Floating Floor Installation

  • Be sure the subfloor is clean, smooth, and free of dust and debris
  • Unroll the QuietWalk Luxury Vinyl Underlayment and flip it over so the film side is up (felt side down)
  • Make sure that underlayment seams run perpendicular (at a right angle) to the long dimension of the planks.
  • Underlayment must be positioned with a minimum 4” separation between seams of underlayment and seams of finished flooring products
  • Trim the perimeter edges of the QuietWalk Luxury Vinyl Underlayment 1/4” from the wall
  • Butt seams together and seals using the factory attached lip and tape system.
  • For seams that do not have the lip and tape feature, use a good quality single-faced tape to seal the seams
  • Install the floor covering product according to the manufacturer’s instructions

Double-Glued Installation

  • Double Glue Down installations are approved with flooring that is a minimum thickness of 4mm.
  • Be sure the subfloor is clean and free of dust and debris
  • Unroll the first drop of QuietWalk Luxury Vinyl Underlayment and flip it over so the film side is up (felt side down)
  • Make sure that underlayment seams run perpendicular (at a right angle) to the long dimension of the planks
  • Remove the lip portion of the lip and tape system with a utility knife and discard
  • Remove the tape strip cover portion of the lip and tape system and discard
  • Trim to fit the QuietWalk Luxury Vinyl Underlayment into the target areas.
  • Move the trimmed-to-fit underlayment to the side to apply the adhesive
  • Apply a recommended pressure-sensitive adhesive using the flooring manufacturer recommended trowel
  • Once the adhesive has flashed (dried to a tacky touch) place the trimmed-to-fit underlayment into the adhesive
  • Butt seams together and apply 2” wide clear packaging tape centered over the seam
  • Roll the adhered QuietWalk Luxury Vinyl Underlayment with a 100 lb flooring roller
  • Mark starting lines on Underlayment for placement of finished flooring product
  • Apply a recommended pressure-sensitive adhesive using the flooring manufacturer recommended trowel
  • Once the adhesive has flashed (dried to a tacky touch) you can begin flooring installation according to the manufacturer’s recommendations
  • Make sure the staggered end joints fall at least 2” away from the underlayment seams
  • Maintain a minimum expansion gap of ¼” around the perimeter of the room
  • Follow flooring manufacturer recommendations for installing transitions in large-span applications and doorways
  • Roll the finished floor with a 100 lb flooring roller
  • Be sure not to slide flooring into a position which could potentially displace adhesive

Mechanically Fastened Hardwood Floors

  • Unroll the underlayment and ensure vapor side is up and fibers are to the subfloor.
  • Install underlayment in opposite direction to the flooring material. You can tape the seams but it is not necessary.
  • Install the hardwood per manufactures written instructions, using their recommended fastening materials.

Trim and Molding

  • All finish trim and transition moldings must be installed without binding or restricting the free movement of the above finished flooring products

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