SELF-LEVELING UNDERLAYMENT

RECOMMENDED SPECIFICATION FOR LEVEL-RIGHT® OVER

ACOUSTI-MAT® CLP SOUND DEADENING PAD OVER CONCRETE

PART 1    GENERAL

1.01      SUMMARY

   A.    This is the recommended specification for Level-Right over Acousti-Mat CLP sound deadening pad over concrete.

1.02        SECTION INCLUDES

   A.    Level-Right Cementitious Underlayment

   B.    Acousti-Mat CLP

   C.    Acousti-Mat CLP Adhesive

   D. Maxxon Overspray

1.03        QUALITY ASSURANCE

   A.    Level-Right Installer's Qualifications: Installation of Level-Right shall be by an applicator authorized by the Maxxon Corporation using Maxxon approved

           mixing and pumping equipment.

   B.    Acousti-Mat CLP Installer's Qualifications: Installation of Acousti-Mat CLP shall be by an applicator authorized by the Maxxon Corporation.

1.04      DELIVERY, STORAGE AND HANDLING

   A.    General Requirements: Materials shall be delivered in their original, unopened packages, and protected from exposure to the elements. Damaged or

           deteriorated materials shall be removed from the premises.

1.05      SITE CONDITIONS

   A. Environmental Requirements: Before, during and after installation of Level-Right and  Acousti-Mat CLP, building interior shall be enclosed and maintained

        at a temperature above 50 degrees F (10 degrees C).

PART 2    PRODUCTS

2.01      MATERIALS

   A. Gypsum Cement: Recommended Level-Right Cementitious Underlayment as manufactured by the Maxxon Corporation, Hamel , MN .

   B.    Sound Deadening Pad: Acousti-Mat CLP as manufactured by the Maxxon Corporation, Hamel, MN.

   C.    Sand Aggregate: Sand shall be 1/8 inch (3 mm) or less, washed masonry or plaster sand, meeting requirements of Maxxon Corporation Sand

          Specifications 101.

   D.    Mix Water: Potable, free from impurities

   E. Adhesive: Acousti-Mat CLP Adhesive as manufactured by the Maxxon Corporation, Hamel, MN.

   F. Sealer: Maxxon Overspray as manufactured by the Maxxon Corporation, Hamel, MN.

2.02      MIX DESIGNS

   A.    General Requirements: Mix proportions and methods shall be in strict accordance with product manufacturer recommendations.

PART 3    EXECUTION

3.01    PREPARATION

   A.    Condition and Cleaning of Subfloor: Subfloor shall be structurally sound. General Contractor shall clean subfloor to remove mud, oil, grease, and other

           contaminating factors before the arrival of the Level-Right and Acousti-Mat CLP crew.

   B.    Leak Prevention: Fill cracks and voids with a quick setting patching or caulking material where leakage of adhesive could occur.

   C.    Expansion Joints: Allow joints to continue through the Level-Right at the same width.

3.02    APPLICATION OF ACOUSTI-MAT CLP AND REINFORCEMENT MESH

   A. Acousti-Mat CLP Installation: Install Acousti-Mat CLP following manufacturers recommendations and specifications.

3.03    APPLICATION OF SELF-LEVELING FLOORING

  A.   Scheduling: Application of Level-Right and Acousti-Mat CLP shall not begin until the building is enclosed, including roof, windows, doors and other

         fenestration. Install after drywall installation unless tenant finish requirements identify partitioning after the pour.

   B.    Application: Place the recommended Level-Right a nominal 1/2 inch (12 mm) thick over Acousti-Mat CLP. Spread and screed Level-Right to a smooth

          surface.

   C.  Drying: General Contractor shall provide continuous ventilation and adequate heat to rapidly remove moisture from the area until the Level-Right is dry.

         General Contractor shall provide mechanical ventilation if necessary. Under the above conditions, for 1/2 inch thick Level-Right, 5-7 days is usually

         adequate drying time. To test for dryness, tape a 24 inch by 24 inch (609 mm by 609 mm) section of plastic or high density rubber mat to the surface of

         the underlayment. After 48-72 hours, if no condensation occurs, the underlayment shall be considered dry. Perform dryness test 5-7 days after pour.

3.04    PREPARATION FOR INSTALLATION OF GLUE DOWN FLOOR GOODS

   A.    Sealing: Seal all areas that receive glue down floor goods with Maxxon Overspray according to the Maxxon Corporation's specifications. Any floor areas

           where the surface has been damaged shall be cleaned and sealed regardless of floor covering to be used. Where floor goods manufacturers require

           special adhesive or installation systems, their requirements supersede these recommendations.

   B.    Floor Goods Procedures: See the Maxxon Corporation's "Procedures for Attaching Finished Floor Goods to Maxxon Underlayments" brochure for

          guidelines for installing finished floor goods. This procedure is not a warranty and is to be used as a guideline only.

3.05    FIELD QUALITY CONTROL

   A.    Slump Test: Level-Right mix shall be tested for slump as it's being pumped using a 2 inch by 4 inch (50 mm by 101 mm) cylinder resulting in a patty size

           of  9 inches (229 mm) plus or minus 1 inch (25 mm) diameter.

   B.    Field Samples: At least one set of 3 molded cube samples shall be taken from each day's pour during the Level-Right application. Cubes shall be tested

          as recommended by the Maxxon Corporation in accordance with modified ASTM C 109. Test results shall be available to architect and/or contractor

          upon request from applicator.

3.06    PROTECTION

   A.    Protection From Heavy Loads: During construction, place temporary wood planking over Level-Right wherever it will be subject to heavy wheeled or

           concentrated loads.