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Sta-Smooth Gypsum Board
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Catalog excerpts

Sta-Smooth Gypsum Board - 1

09 29 00/NGC Gold Bond® BRAND Sta-Smooth® Gypsum Board Sta-Smooth is a drywall system offering maximum joint strength and easy application. It can be used in any gypsum drywall system where conventional types of gypsum board are recommended. This system features Sta-Smooth Brand gypsum board with a unique edge. The two edge configurations relieve joint deformity problems caused by twisted framing, damaged gypsum board edges, poor alignment and extremes in humidity and temperature. Regular StaSmooth Boards are available in 1/2" thicknesses, 4' wide and in customary gypsum board lengths. The Sta-Smooth System is also composed of ProForm BRAND Sta-Smooth Joint Compounds, a hardening-type taping compound and regular Gold Bond tape and finishing compounds. ADVANTAGES Improved Durability – The Sta-Smooth System produces a smooth, flat, durable surface that relieves beading, ridging and other joint deformity problems. Greater Speed – All flat joints in the Sta-Smooth System are filled and taped with any Sta-Smooth Compounds all in one easy operation, the same as conventional gypsum board application methods. StaSmooth Compounds or regular compounds can be used to tape inside corners, cornerbeads, and spot fasteners. Regular ProForm finishing compounds or Sta-Smooth compounds are used for the remaining finishing coats. Easier Handling – The improved edge designs on Sta-Smooth Boards makes handling easier with greater comfort to the hands. No Special Equipment – All conventional fasteners, adhesives, and gypsum board application tools (Tsquares, knives, etc.) can be used to apply Sta-Smooth Boards. Nothing new to buy. Alignment – Sta-Smooth board with its unique edge (either configuration) allows for easy alignment of the boards in the same way as conventional tapered edge board. The taper is scientifically designed to reduce crowned joints. Stronger Bond – The bonding area of the Sta-Smooth Joint Compounds are increased with the “V” edge boards. The StaSmooth Joint Compound used to bond the joint tape and fill the joints is a hardening-type, high density material with low shrinkage characteristics. Strength – The Sta-Smooth joint shape and the joint compound are developed to provide greater mass and integral bond for increased strength. StaSmooth Joint Compounds add considerable strength which is unaffected by the amount of moisture normally introduced into a structure that could cause ridging or beading with conventional joint compounds. Cost – If application techniques are followed as recommended, the StaSmooth System should cost no more and can cost considerably less than conventional gypsum board drywall joint finishing. The initial savings are immediately demonstrated with reduced travel time that results from this perfected 2-trip, 3-step joint finishing system. Future cost savings will be realized with reduced callbacks. Better Butt Joints – Recommended with the Sta-Smooth System is an improved technique for providing a smoother, flatter, stronger butt joint. Although this technique could be used in conventional drywall work and produce better butt joints, it is further improved by the use of the high strength Sta-Smooth Compound. Easier Scheduling – Taping with Sta-Smooth Compounds and applying the first finishing coat, even before the Sta-Smooth used for taping has dried, allows easier job scheduling for the drywall contractor and finisher. This is particularly advantageous under slow drying conditions. TECHNICAL DATA SURFACE BURNING CHARACTERISTICS ASTM E-84 Flame Spread: 15 Smoke Developed: 0 WEIGHTS 1/2" Regular - 1.6 lbs/SF 5/8" Type X - 2.2 lbs/SF 5/8" Type C - 2.2 lbs/SF 09 29 00 DESCRIPTION DETAILS THE SECRET IS IN THE SHAPE OF THE JOINT AND THE STRENGTH OF THE COMPOUND Standard tapered-beveled edge configuration. Round edge configuration. The Sta-Smooth System produces a superior joint because the Sta-Smooth Compounds are a hardening-type compound that is not affected by humidity once it has hardened and dried. It also maintains its hard core even with moisture added by the use of the regular joint compounds for the finishing work. Sta-Smooth Compound firmly bonds the tape to the board and the board “V” edges to each other making a strong, rigidized joint. Consult your local National Gypsum sales representative for edge configuration available in your market. NATIONAL GYPSUM BOARD PRODUCTS 67

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Sta-Smooth Gypsum Board - 2

RECOMMENDATIONS Note: Sta-Smooth Gypsum Board may be used with any of the Gypsum Drywall Systems described in this Gypsum Construction Guide. All specifications for the application of gypsum board as described in this literature may also serve for the application of Sta-Smooth Boards. Any deviation from these specifications is as indicated below. A. BOARD APPLICATION: Position each Sta-Smooth Board so that the long edges are in light contact with the edges of the previous boards. All boards positioned to form butt joints should have a gap approximately 1/16" between the board ends. This...

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Sta-Smooth Gypsum Board - 3

09 29 00/NGC INSTALLATION 1. Fill Joint And Bed Tape Simultaneously 2. First Finishing Coat 3. Second Finishing Coat STA-SMOOTH ROUND EDGE REQUIRES PRE-FILLING PRIOR TO BED & TAPING Application Instructions For Round Edge Sta-Smooth Gypsum Board 1) Mix Sta-Smooth Joint Compound, Sta-Smooth Lite Joint Compound or Sta-Smooth HS Joint Compound as per bag instructions. Care should be taken to mix no more compound than can be applied in the designated set time. 2) Pre-fill all joints formed by the abutting round edge Sta-Smooth Gypsum Boards with Sta-Smooth Compound, Sta-Smooth Lite Joint...

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