MasterFormat: 95
Download this Gypsum Board Assemblies Specification for   WORD | WP | RTF | TEXT
Find over 500 more construction specifications | Arcat.com
         
Continental Building Products Gypsum Board Assemblies
 
         
SECTION 09260
 
         
GYPSUM BOARD ASSEMBLIES
 
         
 
         
Copyright 2004 - 2014 ARCAT, Inc. - All rights reserved

          ** NOTE TO SPECIFIER ** Continental Building Products; Drywall and finishing products.
.
This section is based on the products of Continental Building Products LLC, which is located at:
12950 Worldgate Dr.
Suite 700
Herndon, VA 20170
Phone: (703) 480-3800
Fax: (703) 796-0062
Email:info@continental-bp.com
Web: www.continental-bp.com

Continental Building Products LLC is the largest diversified construction materials company and supplier of cement, aggregates and concrete, and other materials for residential, commercial, institutional and public works construction in the United States andcountry-regionCanada. Lafarge North America is part of the Lafarge Group, a world leader in building materials that is active in 79 countries, and employs more than 84,000 people. The largest construction materials company in the U.S. and Canada, Lafarge Northcountry-regionAmericaoffers a full line of products for building projects large and small. From sidewalks to schools, highways to high-rises, in all regions of the United States andcountry-regionCanada, Lafarge is the building materials supplier of choice.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete items below not required for project.
 
          A.Gypsum board and joint treatment products.
 
          B.Water resistant gypsum board and joint treatment products.
 
          C.Mold and Mildew resistant gypsum board products.
 
          D.Fire rated gypsum area separation walls.
 
          E.Gypsum shaft liner.
 
          F.Abuse resistant gypsum board.
 
          G.Mold resistant gypsum board.
 
          H.Sound dampening area separation walls.
 
          I.Gypsum soffit board.
 
          J.Gypsum sheathing board.
 
          K.Accessories for the installation and trimming of gypsum board partitions and ceilings.
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
          A.Section 05400 - Cold Formed Metal Framing.
 
          B.Section 06100 - Rough Carpentry: Wood framing.
 
          C.Section 06114 - Wood Blocking: Wood blocking supports.
 
          D.Section 06160 - Sheathing.
 
          E.Section 07213 - Batt Insulation: Acoustic and Thermal insulation.
 
          F.Section 08310 - Access Doors and Panels: Metal access panels.
 
          G.Section 09215 - Veneer Plaster.
 
          H.Section 09265 - Gypsum Board Shaftwall Assemblies.
 
          1.3REFERENCES
          ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
          A.ASTM C 36 - Standard Specification for Gypsum Wallboard.
 
          B.ASTM C 79 - Standard Specification for Gypsum Sheathing Board.
 
          C.ASTM C 442 - Standard Specification for Gypsum Backing Board, Gypsum Coreboard and Gypsum Shaftliner Board.
 
          D.ASTM C 475 - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board.
 
          E.ASTM C 514 - Standard Specification for Nails for the Application of Gypsum Board.
 
          F.ASTM C 588 - Specification for Gypsum Base for Veneer Plasters.
 
          G.ASTM C 630 - Standard Specification for Water-Resistant Gypsum Backing Board.
 
          H.ASTM C 665 - Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing.
 
          I.ASTM C 754 - Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products.
 
          J.ASTM C 840 - Standard Specification for Application and Finishing of Gypsum Board
 
          K.ASTM C 931 - Standard Specification for Exterior Gypsum Soffit Board.
 
          L.ASTM C 954 - Standard Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs From 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness.
 
          M.ASTM C 1002 - Standard Specification for Steel Self-Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs.
 
          N.ASTM C 1047 - Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base.
 
          O.ASTM C 1280 - Standard Specification for Application of Gypsum Sheathing.
 
          P.ASTM C 1395 - Specification for Gypsum Ceiling Board.
 
          Q.ASTM C 1396 - Standard Specification for Gypsum Board.
 
          R.ASTM D 3273 - Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber.
 
          S.ASTM E 90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements.
 
          T.ASTM E 119 - Standard Test Methods for Fire Tests of Building Construction and Materials.
 
          U.ASTM E 413 - Classification for Rating Sound Insulation.
 
          V.ASTM E 492 - Standard Test Method for Laboratory Measurement of Impact Sound Transmission through Floor-Ceiling Assemblies Using the Tapping Machine.
 
          W.ASTM E 989 - Classification for Determination of Impact Insulation Class (IIC).
 
          X.CAN/ULC-S101 - Standard Methods of Fire Endurance Tests of Building Construction and Materials.
 
          Y.GA-214 - Recommended Levels of Gypsum Board Finish; Gypsum Association.
 
          Z.GA-216 - Application and Finishing of Gypsum Board; Gypsum Association.
 
          AA.GA-231 - Assessing Water damage to Gypsum Board; Gypsum Association.
 
          AB.GA-238 - Guidelines for the Prevention of Mold Growth on Gypsum Board; Gypsum Association.
 
          AC.GA-253 - Recommended Specifications for the Application of Gypsum Sheathing; Gypsum Association.
 
          AD.GA-600 - Fire Resistance Design Manual; Gypsum Association.
 
          AE.GA-801 - Handling and Storage of Gypsum Panel Product; Gypsum Association.
 
          AF.ITS (Dir) - Directory of Listed Products; Intertek Testing Services; current edition.
 
          AG.UL 263 - Standard for Fire Tests of Building Construction and Materials.
 
          AH.UL (FRD) - Fire Resistance Directory; Underwriters Laboratories Inc.
 
          AI.ULC (FRD) - Fire Resistance Directory; Underwriters' Laboratories ofcountry-regionCanada.
 
          1.4PERFORMANCE REQUIREMENTS
 
          A.Fire Rated Assemblies: Provide materials and construction identical to those tested in fire-endurance rated assemblies by an independent testing agency acceptable to the authorities having jurisdiction.
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
          1.Test Method: ASTM E 119 or UL 263.
          2.Test Method: CAN/ULC-S101M.
          3.Ratings: As indicated on the drawings; designations listed are from:
          ** NOTE TO SPECIFIER ** Delete all of the following directories except the one which is used to reference fire-rated assemblies on the drawings.
          a.Gypsum Association GA-600, Fire Resistance Design Manual.
          b.UL Fire Resistance Directory.
          c.ULC Fire Resistance Directory.
          d.ITS Directory of Listed Products.
 
          B.Sound Rated Assemblies: Provide materials and construction identical to those tested in STC/IIC-rated assemblies by an independent testing agency.
          1.Test Method: ASTM E 90/E 492 and classified according to ASTM E 413/E 989.
          2.STC Ratings: As indicated on the drawings; designations listed are from Gypsum Association GA-600, Fire Resistance Design Manual.
 
          1.5SUBMITTALS
 
          A.Submit under provisions of Section 01300.
 
          B.Product Data: Manufacturer's data sheets on each product to be used, including:
          1.Preparation instructions and recommendations.
          2.Storage and handling requirements and recommendations.
          3.Installation methods.
 
          C.Shop Drawings: Indicate special details associated with fireproofing, acoustic seals, or curved sheet installations.
          ** NOTE TO SPECIFIER ** Delete the following paragraphs if LEED is not applicable.
 
          D.LEED Submittals: Provide documentation of how the requirements of Credit will be met:
          1.Product Data for Credit MR 2.1 and 2.2: For products being recycled, documentation of total weight of project waste diverted from landfill.
          2.Product Data for Credit MR 4.1 and MR 4.2: For products having recycled content, documentation including percentages by weight of post consumer and pre-consumer recycled content
          a.Include statement indicating costs for each product having recycled content.
          3.Product Data for Credit IEQ 4.1: For adhesives used to laminate gypsum board panels to substrates, including printed statement of VOC content
          4.Product Data for Credit IAQ 4.6 (Schools): For products used in school construction, including certification meeting CHPS Low-Emitting Material criteria Section 01350
          5.Product Data for Credit MR 5.1 and Credit MR 5.2: Submit data, including location and distance from Project of material manufacturer and point of extraction, harvest or recovery for main raw material.
          a.Include statement indicating cost for each regional material and the fraction by weight that is considered regional.
 
          E.Maintenance Data: Manufacturer's recommendations for cleaning each type of product specified.
 
          F.Manufacturer's Certificates: Certify products meet or exceed specified requirements.
 
          1.6QUALITY ASSURANCE
 
          A.Installer Qualifications: Installer: Company specializing in performing Work of this section with minimum three years.
          ** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or special design features warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
 
          B.Mock-Up: Provide a mock-up of the area indicated on the Drawings for evaluation of surface preparation techniques and application workmanship.
          1.Locate finish areas designated by Architect.
          2.Do not proceed with remaining work until workmanship and finish is approved by Architect.
          3.Refinish mock-up area as required to produce acceptable work.
 
          1.7DELIVERY, STORAGE, AND HANDLING
 
          A.Deliver and store gypsum board in accordance with GA-801.
 
          B.Ship materials with a weathertight cover and in manufacturer's original packages showing manufacturer's name and product brand name.
 
          C.Remove plastic shipping bags upon receipt and storage. Failure to remove may increase the likelihood of mold growth.
 
          D.Store materials inside and protected from damage by weather and direct sunlight. Stack flat; protect ends, edges, and faces of gypsum boards from damage. Protect steel studs and metal accessories from moisture.
 
          1.8PROJECT CONDITIONS
 
          A.Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
 
          B.Do not install interior products until installation areas are enclosed and conditioned.
 
          C.Do not install panels that are wet, those that are moisture damaged, and those that are mold damaged.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Manufacturer: Continental Building Products, which is located at: 12950 Worldgate Dr. Suite 700 ; Herndon, VA 20170; Toll Free Tel: 800-237-5505; Email: request info; Web: www.continental-bp.com
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
          B.Substitutions: Not permitted.
 
          C.Requests for substitutions will be considered in accordance with provisions of Section 01600.
          ** NOTE TO SPECIFIER ** Edit the following General paragraphs as required and applicable to project LEED requirements. Coordinate project locations for applicable regional credits. Delete the paragraphs that are not applicable or if LEED is not applicable.
 
          2.2GYPSUM PRODUCTS, GENERAL
 
          A.Size: Provide maximum lengths and widths available that will minimize joints in each area that correspond with the support system indicated.
 
          B.Regional Materials: Provide a minimum 20 percent of building materials (by cost) that are regionally, extracted, processed and manufactured within a radius of 500 miles from Project.
 
          C.Synthetic Gypsum: In compliance with LEED requirements, the following manufacturing plant locations are actively manufacturing with synthetic gypsum:
          1.Lafarge Northcountry-regionAmerica: 91-99 percent recycled content (by weight) is available from the following plants:
          a.CityPalatka, FL 32177.
          b.CitySilver Grove, KY 41085.
          c.CityBuchanan, NY 10511.
 
          D.Jobsite Waste Recycle: Conform with waste management requirements specified in Section 01740. In compliance with LEED requirements, the following manufacturing plant locations are actively providing jobsite gypsum board waste recycle:
          1.Lafarge Northcountry-regionAmerica: Synthetic Gypsum Board jobsite waste recycle from new construction is available from the following plants:
          a.CityPalatka, FL 32177.
          2.Jobsite Waste Recycle: Divert 50 percent of project waste (by weight) from landfill
 
          E.Recycled Content: Provide gypsum panel products with recycled content such that post consumer recycled content plus one-half of pre-consumer recycled content constitutes a minimum 50 percent by weight.
 
          2.3INTERIOR GYPSUM MATERIALS
 
          A.Regular Gypsum Board: Gypsum core panel surfaced with paper on front and back edges and complying with ASTM C 1396 and ASTM C 36.
          1.Acceptable Product: Lafarge Regular Drywall.
          2.Thickness: 1/2 inch (12.7 mm), unless otherwise indicated.
          a.Use 1/4 inch (6.4 mm) thickness at _______.
          b.Use 3/8 inch (9.5 mm) thickness at _______.
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
          3.Width: 48 inches (1219 mm).
          4.Width: 54 inches (1372 mm).
          ** NOTE TO SPECIFIER ** 1/2 inch regular gypsum board is available in lengths from 8 feet through 16 feet. 3/8 inch regular gypsum board is available in lengths from 8 feet through 12 feet. 1/4 inch regular gypsum board is available in 8 foot lengths only.
          5.Length: Use longest length available, avoiding unnecessary joints.
          ** NOTE TO SPECIFIER ** 1/4 inch and 3/8 inch thick gypsum board is only available with tapered edge. Rounded or square is available in 1/2 inch. Select edge type(s) required and delete those not required.
          6.Edges:
          a.Use square edges at ______.
          b.Use rounded tapered edges at ______.
          c.Use tapered edges at ______.
 
          B.Regular Mold Resistant Gypsum Board: Gypsum core panel enhanced with moisture-resistant wax emulsion and chemically treated to resist mold and mildew in the core and surfaced with mold and mildew resistant paper on front, back and long edges and complying with ASTM C 1396 Section 7 and ASTM C 630.
          1.Acceptable Product: Lafarge Mold Defense Drywall .
          2.Thickness: 1/2 inch (12.7 mm), unless otherwise indicated.
          a.Use 1/4 inch (6.4 mm) thickness at _______.
          b.Use 3/8 inch (9.5 mm) thickness at _______.
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
          3.Width: 48 inches (1219 mm).
          4.Width: 54 inches (1372 mm).
          ** NOTE TO SPECIFIER ** 1/2 inch regular gypsum board is available in lengths from 8 feet through 16 feet. 3/8 inch regular gypsum board is available in lengths from 8 feet through 12 feet. 1/4 inch regular gypsum board is available in 8 foot lengths only.
          5.Length: Use longest length available, avoiding unnecessary joints.
          ** NOTE TO SPECIFIER ** 1/4 inch and 3/8 inch thick gypsum board is only available with tapered edge. Rounded or square is available in 1/2 inch. Select edge type(s) required and delete those not required.
          6.Edges:
          a.Use square edges at ______.
          b.Use rounded tapered edges at ______.
          c.Use tapered edges at ______.
          7.Mold and Mildew Resistance: Panel score of 10 when tested in accordance with ASTM D 3273.
 
          C.Fire Rated Gypsum Board: Gypsum core panel with glass fibers to enhance fire resistance of the core; surfaced with ivory-colored paper on front and strong liner paper on back; and complying with ASTM C 1396 Section 5 and ASTM C 36, Type X.
          1.Acceptable Product: Lafarge Firecheck Type X Drywall.
          2.Thickness: 5/8 inch (15.9 mm).
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
          3.Width: 48 inches (1219 mm).
          4.Width: 54 inches (1372 mm).
          ** NOTE TO SPECIFIER ** Fire rated gypsum board is available in lengths from 6 feet through 14 feet.
          5.Length: Use longest length available, avoiding unnecessary joints.
          ** NOTE TO SPECIFIER ** Long edges available square, tapered, round or beveled. Select edge type(s) required and delete those not required.
          6.Edges:
          a.Use square edges at ______.
          b.Use tapered edges at ______.
          c.Use rounded tapered edges at ______.
          d.Use beveled edges at ______.
 
          D.Fire Rated Gypsum Board: Gypsum core panel with glass fibers to enhance fire resistance of the core; surfaced with ivory-colored paper on front and strong liner paper on back; and complying with ASTM C 1396 Section 5 and ASTM C 36, Type X, "Premium".
          1.Acceptable Product: Lafarge Firecheck Type C Drywall.
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
          2.Thickness: 1/2 inch (12.7 mm), unless otherwise indicated.
          3.Thickness: 5/8 inch (15.9 mm), unless otherwise indicated.
          4.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** Fire rated gypsum board is available in lengths from 6 feet through 14 feet.
          5.Length: Use longest length available, avoiding unnecessary joints.
          ** NOTE TO SPECIFIER ** Long edges available square, tapered, round or beveled. Select edge type(s) required and delete those not required.
          6.Edges:
          a.Use square edges at ______.
          b.Use tapered edges at ______.
          c.Use rounded tapered edges at ______.
          d.Use beveled edges at ______.
 
          E.Fire Rated Mold-Resistant Gypsum Board: Gypsum core panel with glass fibers to enhance fire resistance of the core; core also enhanced with moisture-resistant wax emulsion and chemically treated to resist mold and mildew; surfaced with a mold and mildew resistant paper on the front, back and long edges; and complying with ASTM C 1396 Section 7 and ASTM C630, Type X.
          1.Acceptable Product: Lafarge Mold Defense Type X Firecheck.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1219 mm).
          4.Width: 54 inches (1372 mm).
          5.Length: Use the longest length available, avoiding unnecessary joints.
          ** NOTE TO SPECIFIER ** Long edges available square, tapered, round or beveled. Select edge type(s) required and delete those not required.
          6.Edges:
          a.Use square edges at ______.
          b.Use tapered edges at ______.
          c.Use rounded tapered edges at ______.
          d.Use beveled edges at ______.
          7.Mold and Mildew Resistance: Panel score of 10 when tested in accordance with ASTM D 3273.
 
          F.Water-Resistant Gypsum Board: Gypsum core wall panel with additives to enhance water resistance of core; surfaced with green-colored face paper and gray backing paper; and complying with ASTM C 1396 and ASTM C 630.
          1.Acceptable Product: Lafarge Watercheck.
          2.Thickness: 1/2 inch (12.7 mm).
          3.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** Water-resistant gypsum board is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
 
          G.Fire Rated Water-Resistant Gypsum Board: Gypsum core wall panel with glass fibers to enhance fire resistance of the core; and with additives to enhance water resistance of core; surfaced with green-colored face paper and gray backing paper; and complying with ASTM C 1396 and ASTM C 630, Type X.
          1.Acceptable Product: Lafarge Fire Watercheck.
          2.Thickness: 1/2 inch (12.7 mm).
          3.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** Water-resistant gypsum board is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
          ** NOTE TO SPECIFIER ** For shaftwall systems the following paragraph should be specified in addition to either 5/8 inch Type X or 1/2 inch Type C fire rated gypsum board. For area separation walls, the following paragraph should be specified in addition to 1/2 inch regular gypsum board.
 
          H.Shaftliner Gypsum Board: Gypsum core shaftwall panel with glass fibers to enhance fire resistance of core; surfaced with green water repellant paper on front and back; and complying with ASTM C 1396 Section 6, Type X, ASTM C 442.
          1.Acceptable Product: Lafarge Shaftliner Type X Drywall.
          2.Thickness: 1 inch (25.0 mm).
          3.Width: 24 inches (610 mm).
          ** NOTE TO SPECIFIER ** Shaftliner is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Double Beveled.
 
          I.Shaftliner Gypsum Board Mold Resistant: Gypsum core shaftwall panel with glass fibers to enhance fire resistance of core, and chemically treated to resist mold and mildew in the core; surfaced with green water repellent; chemically treated to resist mold and mildew on the surface on front and back; complying with ASTM C 1396 Section 6, Type X, ASTM C 442.
          1.Acceptable Product: Lafarge Mold Defense Shaftliner Type X Drywall.
          2.Thickness: 1 inch (25.0 mm).
          3.Width: 24 inches (610 mm).
          ** NOTE TO SPECIFIER ** Shaftliner is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Double Beveled.
          6.Mold and Mildew Resistance: Panel score of 10 when tested in accordance with ASTM D 3273.
 
          J.Abuse Resistant and Mold-Resistant Gypsum Board: Gypsum abuse resistant drywall panel enhanced with glass fibers and a high-density gypsum core; surfaced on the front, back and long edges with reinforced mold and mildew resistant, heavy facing paper; and complying with ASTM C 1396 Section 5 and ASTM C 36, Type X.
          1.Acceptable Product: Lafarge Protecta AR 100 with Mold Defense Drywall.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** CityProtect AR100 with Mold Defense is available in lengths 8 feet and 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
          6.Mold and Mildew Resistance: Panel score of 10 when tested in accordance with ASTM D 3273.
 
          K.Impact Resistant and Mold-Resistant Gypsum Board: Gypsum impact resistant drywall panel enhanced with glass fibers and a high-density gypsum core; surfaced on the front, back and long edges with reinforced mold and mildew resistant, heavy facing paper; and complying with ASTM C 1396 Section 5 and ASTM C 36, Type X.
          1.Acceptable Product: Lafarge Protecta HIR 300 with Mold Defense Drywall.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** Protecta HIR 300 with Mold Defense is available in lengths 8 feet and 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
          6.Mold and Mildew Resistance: Panel score of 10 when tested in accordance with ASTM D 3273.
          ** NOTE TO SPECIFIER ** Sagcheck is a strengthened gypsum panel for use on interior ceilings and designed to be sag resistant under high-humidity and wet texture applications.
 
          L.Sag Resistant Gypsum Board for Ceilings: Gypsum core panel with glass fibers, surfaced with ivory-colored face paper and gray backing paper; and complying with ASTM 1396, ASTM C 1395 Section 12 and ASTM C 36.
          1.Acceptable Product: Lafarge Sagcheck Drywall.
          2.Thickness: 1/2 inch (12.7 mm).
          3.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** Sagcheck is available in lengths 8 feet and 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
          ** NOTE TO SPECIFIER ** Rapid Deco L5 is a factory skim-coated gypsum board for Level Five applications.
 
          M.Level Five Skim-Coat Gypsum Board: Gypsum core panel for Level Five applications; surfaced with factory applied skim-coat on face layer and gray backing paper; and complying with ASTM C 1396 Section 5, ASTM C 36 and ASTM C 840.
          1.Acceptable Product: Lafarge Rapid Deco L5 Level Five Drywall.
          2.Thickness: 1/2 inch (12.7 mm).
          3.Width: 48 inches (1219 mm)
          ** NOTE TO SPECIFIER ** Rapid Deco L5 Level Five gypsum board is available in lengths from 8 feet through 16 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
          6.Accessory Material: Provide Rapid Deco Joint Compound as recommended by Manufacturer.
 
          N.Fire Rated Level Five Gypsum Board: Gypsum core panel for Level Five applications; with glass fibers to enhance fire resistance of the core; surfaced with factory applied skim-coat on face layer and gray backing paper, and complying with ASMT 1396 Section 5, ASTM C 36 and ASTM C 840,Type X.
          1.Acceptable Product: Lafarge Rapid Deco L5 Level Five Type X Drywall.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1219 mm)
          ** NOTE TO SPECIFIER ** Rapid Deco L5 Level Five Drywall is available in lengths from 8 feet through 14 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
          6.Accessory Material: Provide Rapid Deco Joint Compound as recommended by Manufacturer.
 
          O.Fire Rated and Mold Resistant Level Five Gypsum Board: Gypsum core panel for Level Five applications; with glass fibers to enhance fire resistance of the core; surfaced with factory applied skim-coat on face layer and mold and mildew gray backing paper, and complying with ASMT 1396 Section 7, ASTM C 630 and ASTM C 840,Type X.
          1.Acceptable Product: Lafarge Rapid Deco L5 Level Five Type X Drywall with Mold Defense.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1219 mm)
          ** NOTE TO SPECIFIER ** Rapid Deco L5 Level Five Drywall is available in lengths from 8 feet through 14 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
          6.Accessory Material: Provide Rapid Deco Joint Compound as recommended by Manufacturer.
 
          2.4GYPSUM SHEATHING AND SOFFIT PANELS
 
          A.Exterior Gypsum Soffit Board: Gypsum core soffit panel with additives to enhance sag resistance of core; surfaced with paper on front and back; and complying with ASTM C 1396 Section 8 and ASTM C 931.
          1.Acceptable Product: Lafarge Soffitboard.
          2.Thickness: 1/2 inch (12.7 mm).
          3.Width: 48 inches (1220 mm).
          ** NOTE TO SPECIFIER ** Soffit board is available in lengths 8 feet and 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          ** NOTE TO SPECIFIER ** Long edges available square or tapered with round edges. Select edge type required and delete the one not required.
          5.Edges:
          a.Use square edges at ______.
          b.Use rounded tapered edges at ______.
 
          B.Fire Rated Exterior Gypsum Soffit Board: Gypsum core soffit panel with additives to enhance fire-resistance and sag resistance of core; surfaced with paper on front and back; and complying with ASTM C 1396 Section 8 and ASTM C 931, Type X.
          1.Acceptable Product: Lafarge Firecheck Soffitboard Type X.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1220 mm).
          ** NOTE TO SPECIFIER ** Fire rated soffit board is available in lengths 8 feet and 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          ** NOTE TO SPECIFIER ** Long edges available square or tapered with round edges. Select edge type required and delete the one not required.
          5.Edges:
          a.Use square edges at ______.
          b.Use rounded tapered edges at ______.
 
          C.Exterior Gypsum Sheathing Board: Gypsum core sheathing surfaced with paper on front and back; and complying with ASTM C 1396 Section 9 and ASTM C 79, Treated Core.
          1.Acceptable Product: Lafarge Sheathing Treated Core; additives to enhance water resistance of core.
          2.Thickness: 1/2 inch (12.7 mm).
          3.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** Gypsum sheathing board is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Square.
 
          D.Exterior Gypsum Sheathing Board: Gypsum core sheathing surfaced with paper on front and back; and complying with ASTM C 1396 Section 9 and ASTM C 79, Treated Core, Type X.
          1.Acceptable Product: Lafarge Firecheck Sheathing Treated Core Type X.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1219 mm).
          ** NOTE TO SPECIFIER ** Gypsum sheathing board is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Square.
 
          E.Glass-Mat Gypsum Sheathing Board: Gypsum core sheathing surfaced with fiberglass mat on front and back: complying with ASTM 1396 and ASTM C1177
          1.Acceptable Product: Lafarge Weather Defense Platinum Sheathing
          2.Thickness: 1/2 inch (12.7 mm)
          3.Width: 48 inches (1219 mm)
          ** NOTE TO SPECIFIER ** Gypsum sheathing board is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints
          5.Edges: Square
 
          F.Fire Rated Glass-Mat Gypsum Sheathing Board: Gypsum core sheathing surfaced with fiberglass mat on front and back: complying with ASTM 1396 Type X and ASTM C1177.
          1.Acceptable Product: Lafarge Weather Defense Platinum Sheathing Type X
          2.Thickness: 5/8" (15.9 mm)
          3.Width: 48 inches (1219 mm)
          ** NOTE TO SPECIFIER ** Gypsum sheathing board is available in lengths from 8 feet through 12 feet.
          4.Length: Use longest length available, avoiding unnecessary joints
          5.Edges: Square
 
          2.5GYPSUM PLASTER BASE
 
          A.Plaster Base: Gypsum core lathing panel with additives to enhance fire resistance of core and surfaced with highly absorptive paper on front and back; and complying with ASTM C 1396 Section 10 and ASTM C 588.
          1.Acceptable Product: Lafarge Plasterbase.
          2.Thickness: 1/2 inch (12.7 mm).
          3.Width 48 inches (1220 mm).
          ** NOTE TO SPECIFIER ** Plaster base is available in 8 through 12 foot lengths.
          4.Length: Use longest length available, avoiding unnecessary joints.
          5.Edges: Tapered.
 
          B.Fire Rated Plaster Base: Gypsum core lathing panel with additives to enhance fire resistance of core and surfaced with absorptive paper on front and long edges and complying with ASTM C 1396 Section 10 and ASTM C 588, Type X.
          1.Acceptable Product: Lafarge Firecheck Plasterbase Type X.
          2.Thickness: 5/8 inch (15.9 mm).
          3.Width: 48 inches (1220 mm).
          ** NOTE TO SPECIFIER ** Fire rated plaster base is available in 8 and 12 foot lengths.
          a.Length: Use longest length available, avoiding unnecessary joints.
          b.Edges: Tapered.
 
          2.6GYPSUM JOINT TREATMENT AND FINISH PRODUCTS
          ** NOTE TO SPECIFIER ** Edit the following paragraphs to reflect project requirements.
 
          A.Joint Treatment Tape: Complying with ASTM C 475 and GA-216.
 
          B.Joint Compound: Vinyl type pre-mixed compound; complying with ASTM C 475; acceptable product(s):
          1.Lafarge Rapid Coat All Purpose Compound (White, Beige, Yellow).
          2.Lafarge Rapid Coat All Purpose Compound (White).
          3.Lafarge Rapid Coat Mid-weight All Purpose Compound (White).
 
          C.Joint Compound: Setting type lightweight; job mixed chemical-hardening compound; off white color; complying with ASTM C 475; acceptable product(s):
          1.Lafarge Rapid Joint 20 Lightweight Setting Compound.
          2.Lafarge Rapid Joint 45 Lightweight Setting Compound.
          3.Lafarge Rapid Joint 90 Lightweight Setting Compound.
          4.Lafarge Rapid Joint 210 Lightweight Setting Compound.
 
          D.Joint Compound: Level Five vinyl type pre-mixed compound; off-white color or tinted gray color; complying with ASTM C 475 and fulfilling ASTM C 840; designed for joint finishing of Level Five gypsum board; acceptable product(s):
          1.Rapid Deco L5 Level Five All Purpose Compound (White, Tinted).
 
          2.7ACCESSORY MATERIALS
 
          A.Corner Bead: Formed galvanized steel angle, min. base steel 0.014 in. thick, and complying with ASTM C 1047.
 
          B.Casing Bead: Formed galvanized steel trim, minimum base steel thickness of 0.014 inch (0.35 mm), complying with ASTM C 1047, type(s) as follows:
          ** NOTE TO SPECIFIER ** If more than one of the following types of casing beads is required, edit the following to indicate where each is to be used.
          1.J-shaped U-bead, for face nailing and finishing with joint treatment.
          2.J-shaped U-bead, requiring no finishing.
          3.L-shaped, for application over edge and finishing with joint treatment.
 
          C.Control Joint: Extruded vinyl formed with V-shaped slot covered with removable flexible vinyl strip; complying with ASTM C 1047.
 
          D.Control Joint: Bent zinc sheet formed with V-shaped slot, covered with plastic tape, with perforated flanges; complying with ASTM C 1047.
 
          E.Screws: ASTM C 954 or ASTM C 1002 or both with heads, threads, points, and finish as recommended by panel manufacturer.
 
          F.Nails: ASTM C 514 with heads, lengths, configurations, and finish as recommended by panel manufacturer.
 
          G.Acoustical Sealant: Nondrying, nonhardening, nonskinning, nonstaining, nonbleeding, gunnable type as recommended by panel manufacturer.
 
          H.Insulation: ASTM C 665, Type I, mineral fiber (either glass, rock, or slag) insulation blankets without membrane facing.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
 
          A.Verify site conditions are ready to receive work and framing and opening dimensions are as indicated on the Drawings.
 
          B.If preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
 
          3.2PREPARATION
 
          A.Clean surfaces thoroughly prior to installation.
 
          B.Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
          ** NOTE TO SPECIFIER ** Include the following paragraph only if Level 5 Gypsum Board is specified. Delete if not required.
 
          C.Coordinate preparation of Level 5 gypsum board with manufacturers requirements.
 
          3.3INSTALLATION
 
          A.Application: Apply and maintain conditions during installation in accordance with GA-216 and GA-238 and as follows:
          1.Keep gypsum board dry throughout application.
          2.Do not use gypsum board that has visible mold growth.
          3.Apply gypsum board on walls with a minimum 1/4 inch (6.4 mm) gap between the gypsum board and the floor.
          4.Do not apply gypsum board over other building materials where conditions exist that are favorable to mold growth.
          5.Maintain a sound weather-tight building envelope including, such elements as the roof, sealants, windows, etc.
          6.Immediate and appropriate remediation measures must be taken as soon as water leaks or condensation sources are identified.
          7.Provide routine cleaning and maintenance operations to prevent saturation of the gypsum board.
          8.If gypsum board is damaged by water, assess the need for replacement in accordance with GA-231.
 
          B.Install accordance with GA 216 and the following:
          1.Metal Framing: ASTM C 754.
          2.Gypsum Sheathing Board: ASTM C 1280 and GA-253.
          3.Fire Resistant Construction: GA 600.
          4.Gypsum Board and Joint Treatment: ASTM C 840 and GA-214.
          5.Gypsum panel manufacturer's published recommendations.
 
          C.Finishing: Tape, fill, sand and finish joints in accordance with ASTM C 840 and GA-214.
          ** NOTE TO SPECIFIER ** Edit the paragraphs below to describe project requirements for finishing or indicate finish levels on the drawings and delete this paragraph. See ASTM C 840 or GA-214 for guidance on the use of finish levels.
          1.Level 1: Plenums and service corridors.
          2.Level 2: Water resistant gypsum backing board indicated to receive tile.
          3.Level 3: Gypsum board indicated to receive heavy or medium textured coatings and heavy-grade wall coverings.
          4.Level 4: Gypsum board indicated to receive light textured coatings and light-grade wall coverings.
          5.Level 5: All other gypsum board.
          6.Level 5 Skim Coated Gypsum Wall Board: Skim coat joints with Rapid Deco Joint compound specified.
 
          3.4PROTECTION
 
          A.Protect work from damage and deterioration until date of Substantial Completion.
 
          B.Touch-up, repair or replace damaged products before Substantial Completion.
 
          3.5SCHEDULES
          ** NOTE TO SPECIFIER ** Retain Paragraph below if required to suit project requirements. Identify products by name on the Drawings or use this paragraph to define the location of each type of material to be used. The following are some examples of schedule references. Edit as required to suit project or delete and identify products on the Drawings.
 
          A.Exterior Wall Sheathing:
          1.Gypsum sheathing board.
          2.Use fire rated gypsum sheathing board at ________.
          3.Framing: _______.
 
          B.Exterior Soffits:
          1.Use exterior gypsum soffit board.
          2.Use fire rated exterior gypsum soffit board.
          3.Framing: _______.
 
          C.Shaftwalls: Defined as ________.
          1.Use gypsum shaftliner board.
          2.Use fire rated gypsum board.
          3.Framing: C-T studs with J-track.
 
          D.Area Separation Walls:
          1.Use fire rated gypsum shaftliner board at ________.
          2.Use regular gypsum board on interior at ______.
          3.Framing: C-Track.
          4.Framing: H-studs.
 
          E.Other Interior Partitions Indicated As Fire Rated:
          1.Use fire rated gypsum board unless otherwise indicated.
          2.Use fire rated abuse-resistant gypsum board at ________.
          3.Use fire rated mold and mildew resistant gypsum board at _______.
          4.Use fire rated water resistant gypsum board at _______.
          5.Framing: _______.
 
          F.Other Interior Partitions:
          1.Use regular gypsum board unless otherwise indicated.
          2.Use abuse-resistant gypsum board at ________.
          3.Use water resistant gypsum board at _______.
          4.Use mold and mildew resistant gypsum board at _________.
          5.Framing: _______.
          6.Acoustical Rating: STC of ____, minimum.
 
          G.Fire Rated Interior Ceilings, Bulkheads, and Soffits:
          1.Use fire rated gypsum board unless otherwise indicated.
          2.Framing: _______.
 
          H.Other Interior Ceilings, Bulkheads, and Soffits:
          1.Use gypsum ceiling board unless otherwise indicated.
          2.Use regular gypsum board at _______.
          3.Framing: _______.
 
         
END OF SECTION