Installation Guide

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Engineered Flooring — Moisture/Sound Suppression Method Application (cont'd)
M92X Adhesive
A trowel-applied moisture curing urethane adhesive for the installation of glue down ooring installations over concrete and wood substrates.
Use a 3/16" x 1/4" x 1/2" V-notch trowel. Approximate coverage is 50 to 65 square feet per gallon.
Coverage is based on application to a clean, smooth concrete substrate; therefore, application rate may vary depending on substrate conditions.
NOTE: Do not apply over self-stick tile, sheet vinyl, old adhesives, metal, linoleum, laminate, particleboard or strip wood suboors without rst covering with an
approved wood or wood composite underlayment. Air temperature must be between 50° and 100°F for applying M92X Urethane Adhesive.
• Product must be used in its entirety when opened. Lid cannot be re-sealed.
• Temperature and humidity will affect the curing time. The higher the temperature and humidity, the faster the cure.
Application
1. Regulate temperature and humidity 72 hours before, during and after installation.
2. Spread adhesive using recommended trowel, ensuring 95% to 100% adhesive contact.
• Wet lay method: Press ooring rmly into adhesive immediately after troweling.
• Walk on method: Press ooring rmly into adhesive after it has developed its initial grab, typically after 15 to 20 minutes.
3. Remove any adhesive smudges or drops immediately, as adhesive is very difcult to remove once allowed to dry. Clean tools while adhesive is fresh using a
urethane adhesive remover or mineral spirits.
4. Avoid light/regular foot trafc for at least 12 hours. Avoid heavy foot trafc for at least 24 hours.
Use clean white terry cloth towels with mineral spirits to clean as you go. It is easy and convenient to use. Adhesive that has cured on the surface of the ooring
can be difcult to remove.
Getting Started — Direct Glue
There are two ways to install when using a moisture cured urethane wood ooring adhesive: the wet lay method, laying ooring directly into wet adhesive, and
the dry lay method, which allows the adhesive to ash or to tack up.
CAUTION: Whether you choose to install using the dry or wet method, follow all guidelines set by the adhesive manufacturer as well as the ooring
manufacturer. Failure to adhere to the guidelines may void your ooring warranties.
General Information for Glue Down Instructions
1. Use cement-based patch, skim coat leveling products to correct substrate imperfections.
2. Regulate temperature and humidity 72 hours before, during and after installation.
3. Install and secure starter row.
4. Spread adhesive using recommended trowel, ensuring 95% to 100% adhesive contact. Wet-lay method: press ooring rmly into adhesive immediately
after troweling. After the ooring is place, roll the entire installation with a 75 lb. smooth roller.
5. Inspect the installation and remove any adhesive smudges or drops immediately using mineral spirits. NOTE: Urethane adhesive is very difcult to remove
once dry and cured. Make every effort to prevent adhesive from getting on the ooring surface. For best results, keep a urethane adhesive cleaner or
mineral spirits nearby to remove any adhesive smudges or drops during installation.
6. Clean tools while adhesive is fresh using a urethane adhesive cleaner or mineral spirits.
7. Avoid light/regular trafc for at least 12 hours. Avoid heavy trafc for at least 24 hours.
8. See adhesive manufacture guidelines for open time on the adhesive container.
9. Proper ventilation within the room must be provided. An electric fan is helpful.
Wet Lay Method
Step 1: Select a starter wall. It is recommended to start the installation along an exterior wall. It’s more likely to be straight and square with the room. Measure
out from the wall the width of two planks plus the plank thickness, mark each end of the room and snap your chalk line.
Step 2: Spread adhesive from the chalk line to the starter wall using the recommended trowel size. It is important to use the correct trowel at a 45° angle to get
the proper spread of adhesive applied to the suboor and produce a proper and permanent bond. Improper bonding can cause loose or hollow spots.
NOTE: Change the trowel every 2,000 to 3,000 square feet (or sooner as needed) due to wear of the dimples. This assures the proper spread of adhesive