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TF-Greendoc - SECTION 03540

By Craig White,2014-01-09 12:21
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TF-Greendoc - SECTION 03540

    GYPSUM CEMENT UNDERLAYMENT

    RECOMMENDED SPECIFICATION FOR THERMA-FLOOR; “GREEN” FLOOR

    UNDERLAYMENT

PART 1 GENERAL

1.01 SUMMARY

    A. This is the recommended specification for Therma-Floor “Green” Floor Underlayment.

1.02 SECTION INCLUDES

    A. Therma-Floor “Green” floor underlayment with fly ash. Fly ash is a non-combustible mineral

    portion of coal generated in a coal combustion power plant.

     USGBC LEED Credit Areas Impacted by Therma-Floor “Green” Floor Underlayment

    Project Category Credit 3Indoor Environmental Low Emitting Materials EQ 4.1 <0.24 mg/m GREENGUARD CompliantQuality

     for Indoor Air Quality Certified?

    Materials & Resources Recycled Content MR 4.1 4.2 Fly Ash

    Local/Regional Materials MR 5.1 Blue Rapids, KS 66411

     Camden, NJ 08103

     Brunswick, GA 31521

     Las Vegas, NV 89124

    Local/Reg. Materials MR 5.2 Job site manufactured

     with local sand & water

    B. Maxxon Floor Primer

    C. Maxxon Overspray

1.03 QUALITY ASSURANCE

    A. Installer's Qualifications: Installation of Therma-Floor “Green” shall be by an applicator

    authorized by the Maxxon Corporation using Maxxon approved mixing and pumping equipment.

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 Therma-Floor “Green”,

    building interior shall be enclosed and maintained at a temperature above 50 degrees F (10

    degrees C) and below 100 degrees F (37.7 degrees C) until structure and subfloor temperature

    are stabilized.

PART 2 PRODUCTS

2.01 MATERIALS

    A. Therma-Floor “Green” gypsum cement: Floor underlayment compound shall be

    Therma-Floor “Green” gypsum cement underlayment as manufactured by Maxxon Corporation,

    Hamel, MN. All others must receive prior approval.

    B. Sand Aggregate: Sand shall be 1/8 inch (3 mm) or less, washed masonry or plaster sand,

    meeting requirements of Maxxon Corporation Sand Specification 101.

    C. Mix Water: Potable, free from impurities.

    D. Subfloor Primer: Maxxon Floor Primer

    E. Sealer: Maxxon Overspray

2.02 MIX DESIGNS

    A. General Requirements: Therma-Floor “Green” 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 arrival of

    the Therma-Floor “Green” underlayment crew.

    B. Leak Prevention: Fill cracks and voids with a quick setting caulk or patching material where

    leakage of Therma-Floor “Green” could occur.

    C. Priming Subfloor: Prime subfloor using the Maxxon Floor Primer. Priming instructions vary

    according to the porosity of the subfloor, multiple coats may be necessary.

    D. Expansion Joints: Allow joints to continue through the Therma-Floor “Green” at the same width.

3.02 APPLICATION OF SELF-LEVELING FLOORING

    A. Scheduling: Application of Therma-Floor “Green” 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: Therma-Floor “Green” mix portions and methods shall be in strict accordance with

    product manufacturer recommendations.

    C. Drying: General Contractor shall provide continuous ventilation and adequate heat to rapidly

    remove moisture from the area until the Therma-Floor “Green” is dry. General Contractor shall

    provide mechanical ventilation if necessary. Under the above conditions, for 3/4 inch (19 mm)

    thick Therma-Floor “Green”, 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.

    3.03 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.

    3.04 FIELD QUALITY CONTROL

    A. Slump Test: Therma-Floor “Green” mix shall be tested for slump as it is being pumped using a

    2 inch by 4 inch (50 mm by 101 mm) cylinder resulting in a patty size of 8 inches (203 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 Therma-Floor “Green” application. Cubes shall be tested as recommended by the

    Maxxon Corporation in accordance with modified ASTM C 472. Test results shall be available

    to architect and/or contractor upon request from applicator.

    3.05 PROTECTION

    A. Protection From Heavy Loads: During construction, place temporary wood planking over

    Therma-Floor “Green” wherever it will be subject to heavy wheeled or concentrated loads.

    END OF SECTION

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