National Gypsum Construction Guide

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2. Fire-Resistant: A gypsum core lathing board with additives to enhance the fire resistance of the core and surfaced with absorptive paper on front, and long edges and complying with ASTM C 588/C 1396, Type X. a. Thickness: 1/2" (Kal-Kore BRAND Fire-Shield C Plaster Base) or 5/8" (Kal-Kore BRAND Fire-Shield and Fire- Shield C Plaster Base). b. Width: 4' c. Length: 8' through 16' d. Edges: Tapered 3. Regular, Foil-Backed: A gypsum core lathing board surfaced with absorptive paper on front, and long edges; backed with aluminum foil; and complying with ASTM C 588/C 1396 (Kal-Kore BRAND Foil-Back Plaster Base). a. Thickness: 1/2" b. Width: 4' c. Length: 8' through 16' d. Edges: Tapered B. Gypsum Plaster: 1. Base Plaster: Gypsum neat plaster complying with ASTM C 28 (Gold Bond BRAND Two-Way Hardwall Gypsum Plaster). 2. Base Plaster: Gypsum plaster with mill-mixed perlite aggregate complying with ASTM C 28 (Gold Bond BRAND Gypsolite Plaster). 3. Finish Plaster: Gypsum gauging plaster complying with ASTM C 28 (Gold Bond BRAND Super-White Gauging Plaster Quick Set and Gold Bond BRAND Super-White Gauging Plaster Slow Set). 4. Finish Plaster: Gypsum moulding plaster complying with ASTM C 59 (Gold Bond BRAND Super-White Moulding Plaster). 5. Finish Plaster: Gypsum plaster for smooth finish complying with ASTM C 587 (Kal-Kote BRAND Smooth Finish Plaster). 6. Finish Plaster: Gypsum plaster for textured finish complying with ASTM C 587 (Kal-Kote BRAND Texture Finish Plaster). 7. Finish Plaster: Gypsum plaster for smooth finish complying with ASTM C 587 (Uni-Kal BRAND Veneer Plaster). 8. Finish Plaster: Gypsum plaster for smooth finish with extended set time complying with ASTM C 587 (X-KALibur BRAND Veneer Plaster). PART 3 EXECUTION 3.01 INSTALLATION A. Metal Lath, Gypsum Lath, and Accessories: In accordance with ASTM C 841. B. Gypsum Plaster: In accordance with ASTM C 842 and the manufacturer’s recommendations, National Gypsum Company “Gypsum Construction Guide.” C. Tolerances: For flatness of surface, do not exceed 1/4" in 8' for bow or warp of surface and for plumb and level. ® For additional information Phone 1-800-NATIONAL (1-800-628-4662) RECOMMENDATIONS BASECOAT PLASTER PROCEDURES Two-Coat Work Apply first coat with firm pressure to form good bond on the gypsum lath or masonry base; then immediately double back (without cross-raking first coat) using material of same proportion to build proper basecoat thickness. Straighten to a true surface (without applying water) to receive the second (finish) coat. Surface should be left sufficiently rough and porous to provide suitable bond of the finish coat. Three-Coat Work “Scratch” – “brown” – finish is generally used for metal lath or masonry bases, and is performed in discrete steps. • Scratch (first) coat: Should be applied with sufficient material and pressure to obtain good bond over solid bases or form full keys through metal lath. Provide suitable material thickness for scratching (raking) to obtain good mechanical keying of the “brown” coat. • Brown (second) coat: Shall be applied after the scratch (first) coat has set hard. Apply to give mass and surface as for double-back in two-coat work. Finish Coat Plaster Procedures General Requirements (Basecoat Condition) Application over a partially dry basecoat is preferred. If basecoat is thoroughly dry, wet with even application of water to a semi-dry condition. Avoid excess water. Do not apply finish to basecoats having free water on the surface. Application – Gauged Lime Putty Trowel Finish Smooth Finishes • Scratch in tightly over the basecoat, covering the surface completely, then double back immediately with material from the same gauge, filling out to a true, even surface with total thickness of not more than 1/16". • Allow finish to “draw” (lose moisture to basecoat and ambient air) and firm up – then trowel it well to compact and close the surface under the edge of the trowel. Dash water on the surface for lubrication and development of soft material along trowel’s edge to fill surface depressions or other blemishes. • When finish plaster setting action is under way, a second (final) water trowelling can be done with strong pressure to obtain a polished surface if desired. Texture Finishes • Apply finish as above to a true, even surface with total thickness not more than 1/8". • Allow finish to “draw” (lose moisture to basecoat and ambient air). Then begin floating, texturing, or skip trowelling to achieve desired texture. Additions of clean graded silica may be required to achieve desired texture. Drying Conventional plaster systems should be allowed to dry 30 days minimum under ambient conditions prior to final decoration. Variances in humidity or poor drying conditions may affect the drying process. Storage Gypsum plaster must be kept dry before use. Storage conditions vary with location and seasonal changes, which may affect storage life. These conditions may affect product characteristics such as setting time, working qualities, component separation, or lumping, etc. Such aging is normally a function of exposure to humid air, temperature, and physical support in warehousing. Adverse storage conditions or prolonged storage may affect the working qualities of the product. Rotate inventory frequently for best results. 40 NATIONAL GYPSUM LATH AND PLASTER SYSTEMS
10 TH EDITION 09 26 13/NGC BUYLINE 1100 Veneer Plaster Systems 09 26 13 ® 41
Page 1 and 2: 10 TH EDITION National Gypsum Const
Page 3 and 4: GENERAL REFERENCE National Gypsum C
Page 5 and 6: PRODUCT SPECIFICATION DIRECTORY GEN
Page 7 and 8: GENERAL REFERENCE LATH, DRYWALL JOI
Page 9 and 10: Key to Federal Specification Design
Page 11 and 12: QUICK SELECTOR INDEX - FIRE/SOUND G
Page 13 and 14: QUICK SELECTOR FOR FIRE AND SOUND R
Page 15 and 16: GENERAL REFERENCE QUICK SELECTOR FO
Page 21 and 22: GENERAL REFERENCE Gypsum Wallboard
Page 27 and 28: GENERAL REFERENCE Gypsum Wallboard
Page 29 and 30: 10 TH EDITION 06 16 43/NGC BUYLINE
Page 31 and 32: LIMITATIONS 1. Gypsum Sheathing is
Page 35 and 36: Basecoat Plasters 09 23 00/NGC BUYL
Page 37 and 38: Gypsum Lath/Wood Framing DESCRIPTIO
Page 39 and 40: Fireproofing Columns and Beams with
Page 41: 09 23 00/NGC BUYLINE 1100 HANGER WI
Page 45 and 46: Veneer Plaster System Components 09
Page 47 and 48: Veneer Plaster Accessories Used in
Page 49 and 50: DETAILS 09 26 13/NGC BUYLINE 1100 K
Page 51 and 52: STA-SMOOTH PAPER TAPE TREATMENT MET
Page 53 and 54: 09 26 13/NGC BUYLINE 1100 Veneer pl
Page 55 and 56: INSTALLATION KAL-KORNER BEAD 09 26
Page 59 and 60: 09 29 00/NGC BUYLINE 1100 Descripti
Page 61 and 62: 09 29 00/NGC BUYLINE 1100 Descripti
Page 63 and 64: 09 29 00/NGC BUYLINE 1100 METRIC CA
Page 65 and 66: Gold Bond ® BRAND Gypsum Wallboard
Page 67 and 68: Sta-Smooth BRAND Wallboard 09 29 00
Page 69 and 70: INSTALLATION 09 29 00/NGC BUYLINE 1
Page 71 and 72: Gold Bond ® BRAND MR ® Board - Mo
Page 73 and 74: DETAILS 09 29 00/NGC BUYLINE 1100 T
Page 75 and 76: Gold Bond ® BRAND 1" Fire-Shield
Page 77 and 78: 09 29 00/NGC BUYLINE 1100 SPECIFICA
Page 79 and 80: Hi-Abuse BRAND XP Wallboard 09 29 0
Page 81 and 82: Hi-Abuse XP Wallboard must be kept
Page 83 and 84: Hard Body Impact - Industry Propose
Page 85 and 86: Gridstone ® BRAND Ceiling Panels 0
Page 87 and 88: Gridstone ® BRAND Hi-Strength Ceil
Page 89 and 90: GYPSUM SYSTEMS Nonload-Bearing Stee
Page 91 and 92: 09 29 00/NGC BUYLINE 1100 SINGLE LA
Page 93 and 94:
Accessories 09 29 00/NGC BUYLINE 11
Page 95 and 96:
09 29 00/NGC BUYLINE 1100 DRYWALL C
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INSTALLATION SHELF BRACKET STEEL ST
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INSTALLATION 09 29 00/NGC BUYLINE 1
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09 29 00/NGC BUYLINE 1100 RECOMMEND
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Wood Frame Walls and Ceilings/Doubl
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Resilient Furring Channel Construct
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Wallboard Over Masonry 09 29 00/NGC
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Solid Laminated Partitions 09 29 00
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ProForm ® BRAND Joint Treatment 09
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TECHNICAL DATA SPECIFICATIONS 09 29
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ProForm ® BRAND Texture Products D
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RECOMMENDATIONS 09 29 00/NGC BUYLIN
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09 29 00/NGC BUYLINE 1100 LEVEL 5 A
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D.Fire-Resistant Mold-Resistant Gyp
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10 TH EDITION 09 21 16.23/NGC BUYLI
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VIEW A-A 09 21 16.23 /NGC BUYLINE 1
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09 21 16.23/NGC BUYLINE 1100 I STUD
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09 21 16.23/NGC BUYLINE 1100 Elevat
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1/2" FIRE-SHIELD C GYPSUM WALLBOARD
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09 21 16.23/NGC BUYLINE 1100 I-STUD
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09 21 16.23/NGC BUYLINE 1100 DUCT b
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Horizontal Shaftwall Duct and Ceili
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10 TH EDITION 09 21 16.33/NGC BUYLI
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09 21 16.33/NGC BUYLINE 1100 AREA S
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2" H-STUD INTERIOR GYPSUM FACINGS A
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10 TH EDITION PermaBase® BRAND Cem
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09 28 00/NGC BUYLINE 1854 Can be u
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09 28 00/NGC BUYLINE 1854 FLOOR UND
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WATER-MANAGED, HIGH-IMPACT RESISTAN
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PERMABASE ® BRAND CEMENT BOARD TEC
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09 28 00/NGC BUYLINE 1854 INSTALLAT
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10 TH EDITION Index A Accessories .
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Lath ceilings, suspended ..........
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INDEX OF CAD DETAIL DRAWINGS DETAIL
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NATIONAL GYPSUM HAS THE ANSWERS TO
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National Gypsum Construction Guide

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