Firm-Fill 2010

Firm-Fill 2010 is the Hacker Floor Underlayment specially
formulated for maximum strength (up to 2500 PSI - 17.2 MPa) over wood subfloors.

Rapid, efficient installation - up to 30,000 sq. ft. (2800 sq. m) per
day Stiffens the subfloor as it eliminates squeaks and nail pops Over 50 UL Fire Resistance Ratings; excellent STC and IIC sound ratings Solid mildew resistance while remaining safe for the environment The additional surface hardness required in custom homes, commercial buildings and renovation projects And like all Hacker Floor Underlayments, installed only by trained, Licensed Applicators

PART I GENERAL

1.1 Scope - Specify to meet project requirements

A. Work included:

1. Firm-Fill 2010
2. Hacker Floor Primer

1.2 Qualifications

A. Firm-Fill 2010 must be installed by Licensed Applicators of Hacker Industries, Inc., using approved mixing and pumping equipment.
B. Firm-Fill 2010 shall be delivered in original, unopened bags and protected from exposure to the elements after delivery.
C. Install after drywall unless otherwise specified.
D. Before, during, and after installation of Firm-Fill 2010, the building interior must be ventilated and heated to a minimum of 50 F (approx. 10 C).
E. Compressive strength can be specified from 1600 P.S.I. to 2500 P.S.I. (approx. 11.0 to 17.2 MPa).
F. All materials specified herein shall be approved by Hacker Industries, Inc.

PART II PRODUCTS

2.1 Materials

A. Gypsum Concrete - Firm-Fill 2010 as manufactured by Hacker Industries, Inc.
B. Hacker Floor Primer and Sealer
C. Sand: 1/8" (approx. 3mm) or less washed plaster or mortar sand.
D. Mix Water: - Portable and free from impurities.

Part III EXECUTION

3.1 Condition of Subfloor

A. General Contractor is responsible for pro- a structurally sound (L/360) subfloor, broom cleaned, and free of oil, grease and other contaminants.
B. All cracks and voids should be filled with a quick-setting taping compound to prevent leakage.
C. Before installation, General Contractor shall inspect and approve the condition of the subfloor.

3.2 Priming

A. Plywood/OSB - Spray one coat Hacker Primer using one gallon (approx. 3.78 L) per 500 square feet (approx. 47 sq.m).
B. Other substrata - Conditions may vary. Consult your local applicator for recommended mended floor preparation.

3.3 Mixing Instructions

A. 6 to 7 gallons (approx. 22.7 to 26.5 L) of water and sand as specified per 80 pound (approx. 36.3 kg) bag of Firm-Fill 2010. Do not over water. Water amount will change with wetness of sand.
B. Firm-Fill 2010 mix proportions and methods shall be in strict accordance with Hacker recommendations. Firm-Fill 2010 is available in two mix designs:

1. 1600-2000 P.S.I. (approx. 11.0 to 13.8 MPa) - 1.9 cubic feet (approx. .054 cu.m) of sand per 80 lb. (approx. 36.3 kg) bag of Firm-Fill 2010.
2. 2000-2500 P.S.I. (approx. 13.8 to 17.2 MPa) - 1.4 cubic feet (approx. .040 cu.m) of sand per 80 lb. (approx. 36.3 kg) bag of Firm-Fill 2010.

3.4 Underlayment Application

A. Application - Firm-Fill 2010 can be installed at 3/4" (approx. 19mm) mini- mum over wood frame, 1/2" (approx. 13 mm) minimum over precast or poured in place concrete. Can be feather edged to zero. Place as continuously as possible until installation is complete.
B. Protection - After installation, temporary wood planking should be placed wherever the underlayment will be subject to heavy wheeled or concentrated loads.
C. Drying - Prior to the installation of finished floor goods, the Firm-Fill 2010 must be free from any moisture. The General Contractor shall provide continuous ventilation and adequate heat to rapidly remove moisture from the area until the underlayment is dry. Consult flooring contractor for recommended procedures to test for dryness.
D. Firm-Fill 2010 is suitable for interior applications only and must be covered by a finished floor material.

3.5 Field Quality Control

A. Slump Test - Firm-Fill 2010 shall be tested for slump as it is being installed using a 2" by 4" (approx. 51mm by 102mm) cylinder. The patty size should be 8" (approx. 203mm) plus or minus 1/2" (approx. 13mm) in diameter.
B. Field Samples: Testing of molded cube samples shall be in accordance with ASTM: C472 using split brass molds. Prior to independent sampling, contact Hacker Industries, Inc., to insure proper ASTM methods are followed. Test results shall be available from the applicator upon request.