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MANUFACTURER

National Gypsum Company2001 Rexford RoadCharlotte, NC 28211(704) 365-7300

Technical Information:1-800-NATIONAL(1-800-628-4662)

Fax: 1-800-FAX NGC1 (1-800-329-6421)

Internet Home Page:nationalgypsum.comnationalgypsum.com/espanol

09 29 00/NGC BuyLine: 1100

DESCRIPTION

ProForm® brand Concrete- Cover Compound is a pre-mixed vinyl base compound specifically formulated for smoothing or texturing above grade monolithic interior con-crete ceilings and columns. It may be used for texturing drywall, embedding drywall tape and as a first coat over drywall beads and trims.

BASIC USES

Concrete-Cover Compound is specifically formulated for enhanced bond when applied to interior mono-lithic concrete ceilings and columns. It can be sprayed, brushed, rolled, trowel-applied or applied with dry-wall finishing boxes and/or taping tools. It provides ex-cellent bond for embedding drywall tape and laminating gypsum board, and can be used to first-coat beads and trim and spot drywall fasten-ers. It develops its strength and hardness by drying. By adjusting consistency and/or varying application tech-niques, it creates an almost endless variety of textures—the most typical are Smooth, Spray Spatter, Spatter Knock-Down or Orange Peel.

ADVANTAGES

•Idealforsmoothingmono-lithic concrete ceilings.

•Excellentadhesion/bond.

•Createsavarietyoftextures.

•Drieswhite.

•Canbeusedforembeddingdrywall tape as well as first-fill coat on drywall fasteners, beads and trim.

•Readytouserightfromthecontainer.

•LowVOCcontent–Lessthan2 grams/liter.

GREENGUARD CERTIFIED

Concrete-Cover Compound is GREENGUARDIndoorAirQuality Certified® for indoor air quality.

LIMITATIONS

•Protectfromfreezingandexposure to extreme heat and direct sunlight.

•Donotapplytoexteriorsurfaces.

•Donotapplytobelowgrademonolithic concrete, moist surfaces or surfaces that are subject to moisture.

•Excessivemixingwithanelectric drill can cause unde-sirable changes in viscosity and in finished surface appearance.

•Careshouldbetakenwhenwater is added to thin to a desired consistency.

STORAGE

Storage life varies with climatic conditions, up to 9 months under good conditions. Store compound away from extreme cold or heat to avoid premature aging. Regularly check production dates and rotate inventory on a first-in, first-out plan.

ACCESSORIES

•1/2"drillwithpaddlemixer•Drywalltrowels•Sprayequipment•Texturebrush•ProFormJointTape•Drywallbeadsandtrim

PROFORM® brand CONCRETE-COVER COMPOUND

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JobName ___________________________________________________________

Contractor ______________________________________Date ________________

Submittal Approvals: (Stamps or Signatures)

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ProForm® is a registered trademark of National Gypsum Properties, LLC.

COMPOSITION & MATERIALS

May contain any of the following:Component CAS No.Limestone 1317-65-3Plaster of Paris 10034-76-1Gypsum 13397-24-5Perlite 93763-70-3Talc 14807-96-6Mica 12001-26-2Clay 1302-78-9 1332-58-7 66402-68-4 8031-18-3Water 7732-18-5Latex ————

VOCContent:<2g/LContains No Asbestos

INSTALLATION

RECOMMENDATIONS

Installation of Concrete-Cover Compound should be consis-tent with methods described in the noted standards and references and as indicated below.

Mixing

Concrete-Cover Compound may need a slight amount of mixing before use, and should be lightly mixed before any water is added. Mixing may be done with a potato-masher-type tool or by use ofalow-speed1/2"drillandpaddlemixer.Usedirectlyfrom the container for treating fasteners and cornerbeads.

Surface Preparation

New concrete must age 60 days. Grind all high areas in concrete level with surround-ing areas. Remove efflores-cence, greasy deposits and any form oil. Prime exposed metal with quality rust-inhib-itive primer. Fill voids and level offsets with ProForm® brand Quick Set™ or Quick Set™LiteJointCompound.Apply finishing coats of Quick Set compound to fill voids as necessary after each coat has hardened. The surface to receive compound must be smooth, clean, dry and free of water-soluble materials. Previously painted surfaces must be firm, clean and dry. Concrete treated with curing compound is not always suitable for Concrete-Cover Compound.

Spray Application

By adjusting compound consistency, air pressure and/or varying application techniques, a variety of textures can be achieved. Always consult spray equip-ment manufacture for proper equipment recommenda-tions. A smooth surface can be achieved by troweling material with a hawk and trowel or wiped smooth with a drywall wipe-down knife.

Hopper type hand guns should havenozzleopeningsof1/4"to3/8"withoperatingairpressures of 20 to 30 psi.

Polegunsshouldhavenozzleopeningsof1/4"to3/8"witha material feed pressure of 40 to 60 psi and air pressure of 80 to 120 psi at the air tank. As a general rule, air pressure at the tank should be twice that of the material pressure.

Airless sprayers should have atipsizeof.025to.031withair pressure at the tip 2500 to 3000 psi and include a 3/8"I.Dhighpressure material hose.

Roller Application

Useuptoa1"nappaint roller to apply compound to surface. Once compound has been applied, a variety of texture brushes can be utilizedtoachievethedesired texture. A smooth surface can be achieved by troweling material smooth with a hawk and trowel or wiped smooth with a drywall wipe-down knife.

Drywall Taping

In cold weather (outside tem-perature below 50°F [10°C]), temperatures within the build-ing should be maintained at a minimum 50°F (10°C), both day and night, during joint finishing. Adequate ventila-tion should be provided to eliminate excess moisture.

Wet/damp conditions slow the drying process. Subsequently, 24 hours drying time between coats may not be sufficient. Adequate drying time is es-sential to prevent unwanted conditions such as cracks from delayed shrinkage.

DECORATION

Before paint, wall covering or other decorating materials are applied, all areas must be thoroughly dry, dust free and treated with a coat of good quality, high solids, flat latex primer.

The selection of a paint to give the specified or desired finished characteristics is the responsibility of the architect or contractor.

Gypsum Association GA-214, Recommended Specification for Levels of Gypsum Board Finish, should be referred to in order to determine the level of finishing needed to assure a surface properly prepared to accept the desired decoration.

Concrete-Cover Compound can be left unpainted in non-contact areas.

APPROXIMATE DRYING TIMES Temperature

R.H. 32° 40° 50° 60° 70° 80° 100°

0% 38/H 28/H 19/H 13/H 9/H 6/H 3/H

20% 2/D 34/H 23/H 16/H 11/H 8/H 4/H

40% 2.5/D 44/H 29/H 20/H 14/H 10/H 5/H

50% 3/D 2/D 36/H 24/H 17/H 12/H 6/H

60% 3.5/D 2.5/D 42/H 29/H 20/H 13.5/H 8/H

70% 4.5/D 3.5/D 2.25/D 38/H 26/H 19.5/H 10/H

80% 7/D 4.5/D 3.25/D 2.25/D 38/H 27/H 14/H

90% 13/D 9/D 6/D 4.5/D 3/D 49/H 26/H

98% 53/D 37/D 26/D 18/D 12/D 9/D 5/D

Note: R.H. = Relative Humidity D = Days (24 hour period) H = HoursThe chart above is a helpful guide in determining approximate drying times for joint compounds under a variety of humidity/temperature conditions. Shaded area is below the minimum application temperature requirement of 50° and is not recommended for the application of joint compound.

111139 Rev. 06/11

TECHNICAL DATA

PACKAGING & COVERAGE Coverage at Coverage 1/16"thicknessSq.Ft. percontainerPackage (Sq. M)* Sq.Ft. (Sq. M)*

48 lb. (21.8 kg) Carton 64-100 (5.9-9.2 kg) 355-385 (33-36)

61 lb. (28 kg) Carton 95-120 (8.8-11 kg) 440-475 (41-44)

*Coverage varies with number of cornerbeads and trims used.

APPLICABLE STANDARDS AND REFERENCES

ASTM C 475

ASTM C 840

Gypsum Association GA-216

Gypsum Association GA-214

National Gypsum Company, Gypsum Construction Guide

ProForm brand, Drywall Finishing Products Construction Guide