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Bostik w/ Cork and Insulayment

D. Michael Umbarger
Technical Service Manager Consumer
Construction Division

January 11, 2011

Bob Middleton Lumber Liquidators
3000 John Deere Road
Toano, VA 23168

RE: Lumber Liquidators Cork and Insulayment® Recommendations

Dear Mr. Middleton,

I am pleased to provide you with recommendations for the installation of Insulayment® and cork.

1.    Bostik Inc. is pleased recommend Bostik's Best, EFA+ and Vapor-Lock TM for the installation of Insulayment® by MP Global Products L.L.C. over approved substrates.

  •    Bostik's Best and EFA+ will provide sufficient adhesion when applied with a 3/16" X 5/32" V notch trowel.
  •    Bostik's Vapor-Lock TM will provide adhesion and a vapor retardation membrane in one application when the material is applied with a 3/16" X 5/32" V-notch trowel.
    • A uniform layer of Vapor-Lock TM must be achieved to obtain the moisture protection characteristics. It is important to check the adhesive application during the installation to confirm 100% coverage.
  •    For glue down installations of wood flooring directly to Insulayment, follow installation instructions in Bostik Technical Data Sheets.

2.    Bostik Inc. is pleased to recommend the following products for sub-floor moisture protection and improved sound reduction beneath cork underlayment on glue-down wood flooring applications.

  •    Cork may be bonded to the MVP 4 underlayment with Bostik Best or EFA+ adhesives. Use a 1/8" X 1/8" square notch trowel for installing 1/4" (6mm) and 1/8" (3mm) thick cork underlayment. Bostik does not recommend Bostik MVP 4 beneath floating laminate floors.
  •    Cork may also be bonded to concrete with Bostik's Vapor-Lock TM . This product will provide adhesion and a vapor retardation membrane in one application. For cork, Vapor-Lock TM should be applied with a 3/16" x 5/32" V-notch trowel to achieve a uniform and continuous layer of adhesive.

If you have any questions, please do not hesitate to contact me or a member of the Technical Service team.

Bostik, Inc.

D. Michael Umbarger

Bostik, Inc.
211 Boston Street
Middleton, MA 01949-2128 USA
Tel: 978-750-7234 - Fax: 978-750-7217

Lumber Liquidators Cork and Insulayment® Recommendations