USACE / NAVFAC / AFCESA / NASA UFGS-09 29 00 (October 2006)
----------------------------
PREPARING ACTIVITY: NAVFAC Replaces
UFGS-09 29 00 (July 2006)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 09 29 00
GYPSUM BOARD
10/06
NOTE: This guide specification includes the requirements for gypsum board,
cementitious backer units, and accessories intended for use in drywall construction.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestion on this specification are welcome and should be directed
to the technical proponent of the specification. A listing of the technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
This guide specification includes tailoring options for Fire-rated construction.
Selection or deselection of a tailoring option will include or exclude that
option in the section, but editing the resulting section to fit the project
is still required.
Reference Section 05400 COLD-FORMED METAL FRAMING for load bearing studwork.
Reference Section 09100 METAL SUPPORT ASSEMBLIES for non-loadbearing studs,
furring and ceiling suspension systems.
NOTE: On the drawings, show:
1. Locations of each type of gypsum board, backing board and cementitious backer
units, using same terminology as in the specification.
2. Locations and UL or GA design numbers for fire rated gypsum board and cementitious
backer unit assemblies.
3. Locations of asphalt impregnated building felt if gypsum sheathing is used
or if cementitious backer units are used in wet areas.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)ANSI A108.11(1992) Interior Installation of Cementitious Backer UnitsANSI/CTI A108/A118/A136.1(2005) Specification for the Installation of Ceramic Tile][ASTM INTERNATIONAL (ASTM)ASTM C 1002(2007) Standard Specification for Steel Self-Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel StudsASTM C 1047(2005) Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer BaseASTM C 1177/C 1177M(2008) Standard Specification for Glass Mat Gypsum Substrate for Use as SheathingASTM C 1178/C 1178M(2008) Standard Specification for Glass Mat Water-Resistant Gypsum Backing PanelASTM C 1396/C 1396M(2006a) Standard Specification for Gypsum BoardASTM C 36/C 36M(2003e1) Gypsum WallboardASTM C 442/C 442M(2004e1) Gypsum Backing Board, Gypsum Coreboard, and Gypsum Shaftliner BoardASTM C 475/C 475M(2002; R 2007) Joint Compound and Joint Tape for Finishing Gypsum BoardASTM C 514(2004) Standard Specification for Nails for the Application of Gypsum BoardASTM C 557(2003e1) Adhesives for Fastening Gypsum Wallboard to Wood FramingASTM C 630/C 630M(2003e1) Water-Resistant Gypsum Backing BoardASTM C 79/C 79M(2004a) Treated Core and Nontreated Core Gypsum Sheathing BoardASTM C 840(2008) Application and Finishing of Gypsum BoardASTM C 954(2007) 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 ThicknessASTM C 960/C 960M(2004) Predecorated Gypsum BoardASTM D 1037(2006a) Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsASTM D 1149(2007) Standard Test Method for Rubber Deterioration - Surface Ozone Cracking in a ChamberASTM D 226(2006) Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and WaterproofingASTM D 2394(2005e1) Simulated Service Testing of Wood and Wood-Base Finish FlooringASTM D 412(2006ae1e2) Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - TensionASTM D 5420(2004) Impact Resistance of Flat, Rigid Plastic Specimen by Means of a Strike Impacted by a Falling Weight (Gardner Impact)ASTM D 624(2000; R 2007) Tear Strength of Conventional Vulcanized Rubber and Thermoplastic ElastomersASTM E 2129(2005) Standard Practice for Data Collection for Sustainability Assessment of Building ProductsASTM E 695(2003) Measuring Relative Resistance of Wall, Floor, and Roof Construction to Impact LoadingASTM E 84(2008a) Standard Test Method for Surface Burning Characteristics of Building Materials][GYPSUM ASSOCIATION (GA)GA 214(1996) Recommended Levels of Gypsum Board FinishGA 216(2004) Application and Finishing of Gypsum BoardGA 224(1997) Installation of Predecorated Gypsum BoardGA 253(1999) Application of Gypsum SheathingGA 600(2003) Fire Resistance Design Manual][U.S. GREEN BUILDING COUNCIL (USGBC)LEED(2002; R 2005) Leadership in Energy and Environmental Design(tm) Green Building Rating System for New Construction (LEED-NC)][UNDERWRITERS LABORATORIES (UL)UL Fire Resistance(2008) Fire Resistance Directory]1.2 SUBMITTALS
NOTE: Review Submittal Description (SD) definitions in Section 01330 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] Submit the following
in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
SD-03 Product Data
Cementitious backer units
Glass Mat Water-Resistant Gypsum Tile Backing Board
Water-Resistant Gypsum Backing Board
Glass Mat Covered or Reinforced Gypsum Sheathing
Glass Mat Covered or Reinforced Gypsum Sheathing Sealant
Impact Resistant Gypsum Board
Accessories
Submit for each type of gypsum board and for cementitious backer units.
Gypsum Board; (LEED)
Submit documentation indicating percentage of post-industrial and post-consumer recycled content
per unit of product. Indicate relative dollar value of recycled content products to total dollar
value of products included in project.
[Adhesives; (LEED)
Joint Treatment Materials
Submit manufacturer's product data, indicating VOC content.]
[Local/Regional Materials; (LEED)
Documentation indicating distance between manufacturing facility and the project site. Indicate
distance of raw material origin from the project site. Indicate relative dollar value of local/regional
materials to total dollar value of products included in project.]
[Environmental Data]
SD-04 Samples
Predecorated gypsum board[; G][; G, [_____]]
Submit for each color and pattern of predecorated gypsum board. Where colors are not indicated,
submit color selection samples of not less than eight of the manufacturer's standard colors.
SD-07 Certificates
Asbestos Free Materials[; G][; G, [_____]]
Certify that gypsum board types, gypsum backing board types, cementitious backer units, and
joint treating materials do not contain asbestos.
SD-08 Manufacturer's Instructions
Material Safety Data Sheets
SD-10 Operation and Maintenance Data
Manufacturer maintenance instructions
Waste Management
SD-11 Closeout Submittals
Local/Regional Materials; (LEED)
LEED documentation relative to local/regional materials credit in accordance with LEED Reference
Guide. Include in LEED Documentation Notebook.
Gypsum Board; (LEED)
LEED documentation relative to recycled content credit in accordance with LEED Reference Guide.
Include in LEED Documentation Notebook.
Adhesives; (LEED)
LEED documentation relative to low emitting materials credit in accordance with LEED Reference
Guide. Include in LEED Documentation Notebook.
1.3 DELIVERY, STORAGE, AND HANDLING
1.3.1 Delivery
Deliver materials in the original packages, containers, or bundles with each bearing the brand name, applicable
standard designation, and name of manufacturer, or supplier.
1.3.2 Storage
NOTE: Gypsum board provides a sink for adsorbing high short-term emissions
of VOCs, formaldehyde, particulates, or other air-borne compounds. Materials
with high short-term emissions include, but are not limited to: adhesives, sealants
and glazing compounds (specifically those with petrochemical vehicles or carriers);
paint, wood preservatives, and finishes; control and/or expansion joint fillers;
hard finishes requiring adhesive installation; gypsum board (with associated
finish processes and products); and composite or engineered wood products with
formaldehyde binders.
Keep materials dry by storing inside a sheltered building. Where necessary to store gypsum board and cementitious
backer units outside, store off the ground, properly supported on a level platform, and protected from direct
exposure to rain, snow, sunlight, and other extreme weather conditions. Provide adequate ventilation to prevent
condensation. Store per manufacturer's recommendations for allowable temperature and humidity range. Gypsum
wallboard shall not be stored with materials which have high emissions of volatile organic compounds (VOCs) or
other contaminants, including [_____]. Do not store panels near materials that may offgas or emit harmful fumes,
such as kerosene heaters, fresh paint, or adhesives.
1.3.3 Handling
Neatly stack gypsum board and cementitious backer units flat to prevent sagging or damage to the edges, ends,
and surfaces.
1.4 ENVIRONMENTAL CONDITIONS
1.4.1 Temperature
Maintain a uniform temperature of not less than 10 degrees C 50 degrees F in the structure for at least 48 hours
prior to, during, and following the application of gypsum board, cementitious backer units, and joint treatment
materials, or the bonding of adhesives.
1.4.2 Exposure to Weather
Protect gypsum board and cementitious backer unit products from direct exposure to rain, snow, sunlight, and
other extreme weather conditions.
1.4.3 Temporary Ventilation
Provide temporary ventilation for work of this section.
1.5 SUSTAINABLE DESIGN REQUIREMENTS
1.5.1 Local/Regional Materials
NOTE: Using local materials can help minimize transportation impacts, including
fossil fuel consumption, air pollution, and labor. Using materials harvested
and manufactured within a 500 mile radius from the project site contributes
to the following LEED credit: MR5. Coordinate with Section 01335 LEED(tm) DOCUMENTATION.
Use second option if Contractor is choosing local materials in accordance with
Section 01335 LEED(tm) DOCUMENTATION. First option shall not be used for USACE
projects. Army projects shall include second option only if pursuing this LEED
credit.
[Use materials or products extracted, harvested, or recovered, as well as manufactured, within a [500][_____]
mile [800][_____] kilometer radius from the project site, if available from a minimum of three sources.][See
Section 01 33 29 LEED(tm) DOCUMENTATION for cumulative total local material requirements. Gypsum board materials
may be locally available.]
1.5.2 Environmental Data
NOTE: ASTM E 2129 provides for detailed documentation of the sustainability
aspects of products used in the project. This level of detail may be useful
to the Contractor, Government, building occupants, or the public in assessing
the sustainability of these products.
[Submit Table 1 of ASTM E 2129 for the following products: [_____].]
1.6 QUALIFICATIONS
Furnish type of gypsum board work specialized by the installer with a minimum of [3] [_____] years of documented
successful experience.
1.7 SCHEDULING
NOTE: One or both of the following procedures shall be used to minimize the
exposure of gypsum wallboard to materials or finishes which have high short-term
emissions of VOCs, formaldehyde, particulates, or other air-borne compounds.
[The gypsum wall board shall be taped, spackled and primed before the installation of the highly-emitting materials,
including [_____].] [The gypsum wallboard shall be installed after the installation and ventilation period of
the highly-emitting materials, including [_____].]
PART 2 PRODUCTS
2.1 MATERIALS
NOTE: Check ASTM C 840, GA 216 and ANSI A108.11 for details of materials, fasteners,
and application.
Conform to specifications, standards and requirements specified. Provide gypsum board types, gypsum backing
board types, cementitious backing units, and joint treating materials manufactured from asbestos free materials
only. Submit Material Safety Data Sheets and manufacturer maintenance instructions for gypsum materials including
adhesives.
2.1.1 Gypsum Board
Use of materials with recycled content, calculated on the basis of post-industrial
and post-consumer percentage content, contributes to the following LEED credit:
MR4. Designer must verify suitability, availability and adequate competition
(including verification of bracketed percentages included in this guide specification)
before specifying product recycled content requirements. Use last option if
Contractor is choosing recycled content products in accordance with Section
01335 LEED(tm) DOCUMENTATION. Army projects shall specify recycled content only
if pursuing this LEED credit
ASTM C 36/C 36M and ASTM C 1396/C 1396M. [Gypsum board shall contain a minimum of [5][10][_____] percent post-consumer
recycled content, or a minimum of [20][40][_____] percent post-industrial recycled content.] [Paper facings shall
contain [100][_____] percent post-consumer recycled paper content. Gypsum cores shall contain a minimum of [95][_____]
percent post-industrial recycled gypsum content.][See Section 01 33 29 LEED(tm) DOCUMENTATION for cumulative
total recycled content requirements. Gypsum board may contain post-consumer or post-industrial recycled content.]
2.1.1.1 Regular
NOTE: Use tapered and featured edge gypsum board with embedding and finishing
compounds when a very flat surface is required, such as long walls with lighting
at the end of the wall and down or up lighted walls.
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, [tapered][, tapered and featured] edges. [Provide
tapered and featured edge gypsum board [in Rooms _____ ] [as indicated].]
2.1.1.2 Foil-Backed
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, [tapered] [tapered and featured] edges.
2.1.1.3 Type X (Special Fire-Resistant)
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, [tapered] [tapered and featured] edges.
2.1.2 Gypsum Backing Board
NOTE: When thicker board is needed, replace the term "backing board" with "coreboard",
and change dimension to 19.05-25.4 mm 3/4"-1", depending on system used.
ASTM C 442/C 442M, gypsum backing board shall be used as a base in a multilayer system.
2.1.2.1 Regular
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, square edges.
2.1.2.2 Foil-Backed
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, square edges.
2.1.2.3 Type X (Special Fire-Resistant)
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, square edges.
2.1.3 Regular Water-Resistant Gypsum Backing Board
NOTE: For adhesive applied ceramic tile in wet areas (tubs, shower enclosures,
saunas, steam rooms, gang shower rooms, etc.), use cementitious backer units
(ANSI/CTI A108/A118/A136.1) as a substrate. Specify ASTM C 630/C 630M or ASTM
C 1178/C 1178M for all other tiled areas including areas where only ceramic
or quarry tile base is to be installed, and for ceilings in humid areas. When
using water-resistant gypsum backing board at tile applications, the metal studs
should not be spaced more than 406 mm 16 inches o.c. Specify moisture resistant
gypsum board ASTM C 630/C 630M for humid areas that are not exposed to direct
moisture.
When using moisture resistant board on ceilings, spacing of supports should
be no more than 305 mm 12 inch on center.
NOTE: Additives used to produce water-resistant gypsum board ("green board")
may include VOCs. Water-resistant types may be difficult to recycle.
ASTM C 630/C 630M
2.1.3.1 Regular
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, tapered edges.
2.1.3.2 Type X (Special Fire-Resistant)
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, tapered edges.
2.1.4 Glass Mat Water-Resistant Gypsum Tile Backing Board
ASTM C 1178/C 1178M
2.1.4.1 Regular
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, square edges.
2.1.4.2 Type X (Special Fire-Resistant)
1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick, square edges.
[2.1.5 Glass Mat Covered or Reinforced Gypsum Sheathing
NOTE: This section should be used where exterior gypsum sheathing with water
resistance is required (i.e. cavity sheathing over metal studs with brick veneer
or as substrate for EIFS systems). Always use asphalt impregnated felt paper
for sheathing protection. For additional protection or if recommended by the
manufacturer, choose the paragraph for sheathing sealant.
NOTE: Glass-fiber reinforced types may be difficult to recycle.
Exceeds physical properties of ASTM C 79/C 79M and ASTM C 1177/C 1177M. Provide [12.7] [15.9,] mm [1/2][5/8]
inch, gypsum sheathing. Provide gypsum board of with a noncombustible water-resistant core, with glass mat surfaces
embedded to the gypsum core or reinforcing embedded throughout the gypsum core. Warrant gypsumsheathing board
for at least six months against delamination due to direct weather exposure. Provide continuous, asphalt impregnated,
building felt to cover exterior face of sheathing. Seal [all joints, seams, and penetrations with compatible
sealant.]
[2.1.5.1 Glass Mat Covered or Reinforced Gypsum Sheathing Sealant
Provide sealant compatible with gypsum sheathing, rubber washers for masonry veneer anchors, and other associated
cavity wall components such as anchors and through wall flashing. Provide sealants for gypsum sheathing board
edge seams and veneer anchor penetrations recommended by the gypsum sheathing manufacturer and have the following
performance requirements:
a. ASTM D 412: Tensile Strength - 551 kilopascals 80 psi
b. ASTM D 412: Ultimate Tensile Strength (maximum elongation) - 1172 kilopascals 170 psi
c. ASTM D 624: Tear Strength, dieB, - 4.7 kN/m 27 ppi
d. ASTM D 1149: Joint Movement Capability after 14 Days cure - plus or minus 50 percent.
]][2.1.6 Impact Resistant Gypsum Board
Note: Impact Resistant Gypsum Board Should Be Used When Abuse Or Vandalism Of
Walls Is Anticipated And Gypsum Board Is The Only Wall Material Alternative
Feasible. Consult Manufacture For Use Restrictions Of Impact Resistant Gypsum
Board On Exterior Walls. This Product Requires A Minimum Of 20 Gauge Metal Framing
As Support, Coordinate with Section 09100 METAL SUPPORT ASSEMBLIES.
Some products rely on lexan backing for penetration resistance. The impervious
layer will act as a vapor barrier which may not be desirable in certain wall
systems and climates.
None of the paper faced gypsum products have high resistance to abrasion. Designer
should consider high strength veneer plaster on wall systems using impact resistant
gypsum wallboard, coordinate with Section 09215 VENEER PLASTER.
1200 mm 48 inch wide, 15.9 mm 5/8 inch thick, tapered edges.
Reinforced gypsum panel with imbedded fiber mesh or lexan backing testing in accordance with the following tests.
Provide fasteners that meet manufacturer requirements and specifications stated within this section. Impact
resistant gypsum board, when tested in accordance with ASTM E 84, have [a flame spread rating of 25 or less and
a smoke developed rating of 50 or less for [_____]] [and] [a flame spread rating of 75 or less and a smoke developed
rating of 100 or less for [_____]].
2.1.6.1 Structural Failure Test
ASTM E 695 or ASTM D 2394 for structural failure (drop penetration). ASTM E 695 using a 27.2 kg 60 lb sand filled
leather bag, resisting no less than 407 N-m 300 ft. lb. cumulative impact energy before failure or ASTM D 2394
using 139.7 mm 5.5 inch hemispherical projectile resisting no less than 357 N-m 264 ft. lb. before failure.
Provide test specimen stud spacing a minimum 406 mm 16 inch on center.
2.1.6.2 Indentation Test
ASTM D 5420 or ASTM D 1037 for indentation resistance. ASTM D 5420 using a .907 kg 32 oz weight with a 16 mm
5/8 inch hemispherical impacting head dropped once 915 mm 3 feet creating not more than 3.5 mm 0.137 inch indentation
or ASTM D 1037 using no less than 213 kg 470 lb weight applied to the 11.13 mm 0.438 inch diameter ball to create
not more than a 0.5 mm 0.0197 inch indentation depth.
]2.1.7 Predecorated Gypsum Board
NOTE: Predecorated gypsum board is available only in1200 mm 48 inch wide panels.
Interior finish materials for exits, hospitals, individual rooms with capacity
for 5 or more persons must have a flame spread rating of 25 or less and smoked
developed rating of 50 or less. Interior finish materials for other locations
must have flame spread rating of 75 or less and smoke developed rating of 100
or less. Flame spread rating greater than 75 and smoke developed rating greater
than 100 are not permitted. Refer to MIL-HDBK-1008, "Fire Protection for Facilities
Engineering, Design and Construction," for further guidance on specifying flame
spread and smoke developed ratings.
NOTE: If the optional phrase "as selected" is not used to designate a color
(and pattern), insert a manufacturer's name and color (and pattern) designation
in the blank and add the following to the end of this paragraph "The manufacturer's
name and catalog designation are provided in order to describe the color (and
pattern) desired. Other manufacturer's products having a similar color (and
pattern) will be acceptable."
NOTE: Insert designations of rooms or areas in which different flame spread
and smoke developed ratings are required.
ASTM C 960/C 960M, [regular] [Type X] gypsum board, 1200 mm 48 inch wide, [12.7] [15.9] mm [1/2] [5/8] inch thick,
with a decorative wall covering (Class I) [or coating (Class II)] applied in-plant by the gypsum board manufacturer.
The color [and pattern] of wall covering shall be [_____] [as selected]. Provide [_____] color [and pattern]
wall covering selected. [Furnish gypsum board with square edges, and a slight bevel to produce a shallow vee
joint. Wrap all coverings around edges.] Furnish a predecorated gypsum board with [a flame spread rating of
25 or less and a smoke developed rating of 50 or less for [_____]] [and] [a flame spread rating of 75 or less
and a smoke developed rating of 100 or less for [_____]].
2.1.8 Cementitious Backer Units
NOTE: For adhesive applied ceramic tile in wet areas (tubs, shower enclosures,
saunas, steam rooms, gang shower rooms), specify only cementitious backer units.
ANSI/CTI A108/A118/A136.1.
2.1.9 Joint Treatment Materials
NOTE: VOCs may be emitted from taping compounds and finishes during the curing
process.
ASTM C 475/C 475M. [Use all purpose joint and texturing compound containing inert fillers and natural binders,
including lime compound. Pre-mixed compounds shall be free of antifreeze, vinyl adhesives, preservatives, biocides
and other slow releasing compounds.]
2.1.9.1 Embedding Compound
Specifically formulated and manufactured for use in embedding tape at gypsum board joints and compatible with
tape, substrate and fasteners.
2.1.9.2 Finishing or Topping Compound
Specifically formulated and manufactured for use as a finishing compound.
2.1.9.3 All-Purpose Compound
Specifically formulated and manufactured to serve as both a taping and a finishing compound and compatible with
tape, substrate and fasteners.
2.1.9.4 Setting or Hardening Type Compound
Specifically formulated and manufactured for use with fiber glass mesh tape.
2.1.9.5 Joint Tape
Use cross-laminated or tapered edge tape recommended by the manufacturer. Paper and fiberglass joint tape are
not permitted.
2.1.10 Fasteners
2.1.10.1 Nails
ASTM C 514. [For predecorated gypsum board provide special nails with factory coated heads of color to match
wall covering materials as recommended by the predecorated gypsum board manufacturer.]
2.1.10.2 Screws
ASTM C 1002, Type "G", Type "S" or Type "W" steel drill screws for fastening gypsum board to gypsum board, wood
framing members and steel framing members less than 0.84 mm 0.033 inch thick. ASTM C 954 steel drill screws
for fastening gypsum board to steel framing members 0.84 to 2.84 mm 0.033 to 0.112 inch thick. Provide cementitious
backer unit screws with a polymer coating.
2.1.10.3 Staples
1.5 mm thick No. 16 USS gage flattened galvanized wire staples with 11.1 mm 7/16 inch wide crown outside measurement
and divergent point for base ply of two-ply gypsum board application. Use as follows:
Length of Legs (mm) Thickness of Gypsum Board (mm)
28.6 12.7
31.8 15.9
Length of Legs (inch) Thickness of Gypsum Board (inch)
1 1/8 1/2
1 1/4 5/8
2.1.11 Adhesives
Using interior low-VOC products contributes to the following LEED credit: EQ4.
Include VOC submittal if pursuing this LEED credit. Coordinate with Section
01 33 29 LEED(tm) DOCUMENTATION. Designer must verify suitability, availability
and adequate competition (including verification of bracketed VOCs included
in this guide specification) before specifying product VOC requirements. Army
projects shall specify bracketed LEED VOC option only if pursuing this LEED
credit and allowing adhesive attachment.
Do not use adhesive containing benzene, carbon tetrachloride, or trichloroethylene.[ Adhesive shall contain
a maximum VOC content of 50 grams per liter.][ Adhesive must meet the requirements of LEED low emitting materials
credit.]
2.1.11.1 Adhesive for Fastening Gypsum Board to Metal Framing
NOTE: Use adhesive only where screw type fastener attachment to metal framing
is not possible to avoid difficulty with future gypsum recycling.
[Not permitted.][Type recommended by gypsum board manufacturer.]
2.1.11.2 Adhesive for Fastening Gypsum Board to Wood Framing
NOTE: Use adhesive only where screw type fastener attachment to wood framing
is not possible to avoid difficulty with future gypsum recycling.
[Not permitted.][ASTM C 557.]
2.1.11.3 Adhesive for Laminating
NOTE: Use adhesive only where screw type fastener attachment is not possible
to avoid difficulty with future gypsum recycling.
[Not permitted.][ Adhesive attachment is not permitted for multi-layer gypsum boards. For laminating gypsum
studs to face panels, provide adhesive recommended by gypsum board manufacturer.]
2.1.12 Gypsum Studs
Provide 25 mm one inch minimum thickness and 150 mm 6 inch minimum width. Studs may be of 25 mm one inch thick
gypsum board or multilayers fastened to required thickness. Conform to ASTM C 36/C 36M or ASTM C 442/C 442M
for material.
2.1.13 Shaftwall Liner Panel
NOTE: Shaftwall panels are typically used for elevators, stairwells and mechanical
chases that penetrate rated floor systems. When using shaftwall system, edit
Section 09100 METAL SUPPORT ASSEMBLIES to include shaftwall liner panel metal
studs.
ASTM C 442/C 442M. Conform to the UL Fire Resistance for the Design Numbers(s) indicated for shaftwall liner
panels. Manufacture liner panel for cavity shaftwall system, with water-resistant paper faces, bevel edges,
single lengths to fit required conditions, [25.4 mm] [19.05 mm] [1"] [3/4"] thick, by 610 mm 24" wide.
2.1.14 Accessories
ASTM C 1047. Fabricate from corrosion protected steel or plastic designed for intended use. Accessories manufactured
with paper flanges are not acceptable. Flanges shall be free of dirt, grease, and other materials that may adversely
affect bond of joint treatment. Provide prefinished or job decorated materials. [For predecorated gypsum board
provide prefinished metal or plastic trim to match predecorated gypsum board.]
2.1.15 Asphalt Impregnated Building Felt
Provide a 6.7 kg 15 lb asphalt moisture barrier over gypsum sheating. Conforming to ASTM D 226 Type 1 (No. 15)
for asphalt impregnated building felt.
2.1.16 Water
Provide clean, fresh, and potable water.
PART 3 EXECUTION
3.1 EXAMINATION
3.1.1 Framing and Furring
Verify that framing and furring are securely attached and of sizes and spacing to provide a suitable substrate
to receive gypsum board and cementitious backer units. Verify that all blocking, headers and supports are in
place to support plumbing fixtures and to receive soap dishes, grab bars, towel racks, and similar items. Do
not proceed with work until framing and furring are acceptable for application of gypsum board and cementitious
backer units.
3.1.2 [Gypsum Board] [and] [Framing]
Verify that surfaces of [gypsum board] [and] [framing] to be bonded with an adhesive are free of dust, dirt,
grease, and any other foreign matter. Do not proceed with work until surfaces are acceptable for application
of gypsum board with adhesive.
3.1.3 [Masonry] [and] [Concrete] Walls
Verify that surfaces of [masonry] [and] [concrete] walls to receive gypsum board applied with adhesive are dry,
free of dust, oil, form release agents, protrusions and voids, and any other foreign matter. Do not proceed
with work until surfaces are acceptable for application of gypsum board with adhesive.
3.2 APPLICATION OF GYPSUM BOARD
NOTE: Coordinate with the drawings to ensure that all types of gypsum board
specified are indicated. Terminology on the drawings should be identical to
that in the specifications.
NOTE: Allow adhesive bonding of gypsum board and substrate members only when
required for proper installation.
NOTE: Use of special clips designed to provide support at wall corners and
wall-ceiling intersections in lieu of backup studs or blocking minimizes framing,
and is approved except where not permitted in fire rated assemblies. Include
gypsum or ceiling board over framing sentence when appropriate with design and
meets industry guidance and requirements for fire rated assemblies. Ceilings
insulated with heavy or compressed insulation (such as cellulose, mineral wool,
or compressed fiberglass batts) may require 5/8 inch 16 mm gypsum board.
Apply gypsum board to framing and furring members in accordance with ASTM C 840 or GA 216 and the requirements
specified. Apply gypsum board with separate panels in moderate contact; do not force in place. Stagger end
joints of adjoining panels. Neatly fit abutting end and edge joints. Use gypsum board of maximum practical
length; select panel sizes to minimize waste. Cut out gypsum board to make neat, close, and tight joints around
openings. In vertical application of gypsum board, provide panels in lengths required to reach full height of
vertical surfaces in one continuous piece. Lay out panels to minimize waste; reuse cutoffs whenever feasible.
Surfaces of gypsum board and substrate members may [not ]be bonded together with an adhesive[, except where prohibited
by fire rating(s)]. Treat edges of cutouts for plumbing pipes, screwheads, and joints with water-resistant compound
as recommended by the gypsum board manufacturer. Minimize framing by floating corners with single studs and
drywall clips. [Install [5/8 inch 16 mm ][_____] gypsum or [1/2 inch 13 mm ][_____] ceiling board over framing
at [24 inches 610 mm ][_____] on center.] Provide type of gypsum board for use in each system specified herein
as indicated.
3.2.1 Application of Single-Ply Gypsum Board to Wood Framing
Apply in accordance with ASTM C 840, System I or GA 216.
3.2.2 Application of Two-Ply Gypsum Board to Wood Framing
Apply in accordance with ASTM C 840, System II or GA 216.
3.2.3 Adhesive Nail-On Application to Wood Framing
Apply in accordance with ASTM C 840, System III or GA 216. This method may be used in lieu of ASTM C 840, System
I at the option of the Contractor.
3.2.4 Semi-Solid Gypsum Board Partitions
Provide in accordance with ASTM C 840, System IV or GA 216 .
3.2.5 Solid Gypsum Board Partitions
Provide in accordance with ASTM C 840, System V or GA 216.
3.2.6 Adhesive Application to Interior Masonry or Concrete Walls
Apply in accordance with ASTM C 840, System VI or GA 216.
3.2.7 Application of Gypsum Board to Steel Framing and Furring
Apply in accordance with ASTM C 840, System VIII or GA 216.
3.2.8 Arches and Bending Radii
Apply gypsum board in accordance with ASTM C 840, System IX or GA 216.
3.2.9 Gypsum Board for Wall Tile or Tile Base Applied with Adhesive
NOTE: For adhesive applied ceramic tile in wet areas (tubs, shower enclosures,
saunas, steam rooms, gang shower rooms), specify cementitious backer board (ANSI/CTI
A108/A118/A136.1) as the substrate; specify ASTM C 1178/C 1178M glass mat water-resistant
backing board or ASTM C 630/C 630M water-resistant gypsum backing board for
other tiled areas including areas where only ceramic or quarry tile base is
to be installed.
In dry areas (areas other than tubs, shower enclosures, saunas, steam rooms, gang shower rooms), apply glass
mat water-resistant gypsum tile backing board [or water-resistant gypsum backing board] in accordance with ASTM C 840
, System X or GA 216.
3.2.10 Exterior Application
Apply exterior gypsum board (such as at soffits) in accordance with ASTM C 840, System XI or GA 216.
3.2.11 Glass Mat Covered or Fiber Reinforced Gypsum Sheathing
NOTE: Choose the bracketed option below if sealant will be applied to sheathing
joints and penetrations in addition to the asphalt impregnated building felt.
Apply gypsum sheathing in accordance to gypsum association publications GA 253. Follow gypsum sheathing manufacturer's
requirements of design details for joints and fasteners and be properly installed to protect the substrate from
moisture intrusion. Do not leave exposed surfaces of the gypsum sheathing beyond the manufacturer's recommendation
without a weather barrier cladding. Provide continuous asphalt impregnated building felt over sheathing surface
in single fashion with edges and ends lapped a minimum of 150 mm 6 inch. Property flash the openings. [Seal
all joints, seams, and penetrations with a compatible silicone sealant.]
3.2.12 Floating Interior Angles
NOTE: Use of special clips designed to provide support at wall corners and
wall-ceiling intersections in lieu of backup studs or blocking minimizes framing,
and is approved except where not permitted in fire rated assemblies. Include
gypsum or ceiling board over framing sentence when appropriate for design and
meets industry guidance and requirements for fire rated assemblies.
Minimize framing by floating corners with single studs and drywall clips. Locate the attachment fasteners adjacent
to ceiling and wall intersections in accordance with ASTM C 840, System XII or GA 216, for [single-ply] [and]
[two-ply] applications of gypsum board to wood framing.
3.2.13 Control Joints
Install expansion and contraction joints in ceilings and walls in accordance with ASTM C 840, System XIII or
GA 216. Fill control joints between studs in fire-rated construction with firesafing insulation to match the
fire-rating of construction.
3.2.14 Application of Foil-Backed Gypsum Board
Apply foil-backed gypsum board in accordance with ASTM C 840, System XIV or GA 216.
3.2.15 Application of Predecorated Gypsum Board
Apply predecorated gypsum board in accordance with GA 224. Attach predecorated gypsum board with adhesive and
fasteners as recommended by the manufacturer. Conceal fasteners in the finished work.
3.2.16 Application of Impact Resistant Gypsum Board
Apply in accordance with applicable system of ASTM C 840 as specified or GA 216. Follow manufacturers written
instructions on how to cut, drill and attach board.
3.3 APPLICATION OF CEMENTITIOUS BACKER UNITS
3.3.1 Application
In wet areas (tubs, shower enclosures, saunas, steam rooms, gang shower rooms), apply cementitious backer units
in accordance with ANSI A108.11. Place a 7.6 kg 15 lb asphalt impregnated, continuous felt paper membrane behind
cementitious backer units, between backer units and studs or base layer of gypsum board. Place membrane with
a minimum 150 mm 6 inch overlap of sheets laid shingle style.
3.3.2 Joint Treatment
ANSI A108.11.
3.4 FINISHING OF GYPSUM BOARD
Tape and finish gypsum board in accordance with ASTM C 840, GA 214 and GA 216. Finish plenum areas above ceilings
to Level 1 in accordance with GA 214. Finish water resistant gypsum backing board, ASTM C 630/C 630M, to receive
ceramic tile to Level 2 in accordance with GA 214. Finish walls and ceilings to receive a heavy-grade wall covering
or heave textured finish before painting to Level 3 in accordance with GA 214. Finish walls and ceilings without
critical lighting to receive flat paints, light textures, or wall coverings to Level 4 in accordance with GA 214
. Finish all gypsum board walls, partitions and ceilings to Level 5 in accordance with GA 214. Provide joint,
fastener depression, and corner treatment. Tool joints as smoothly as possible to minimize sanding and dust.
Do not use fiber glass mesh tape with conventional drying type joint compounds; use setting or hardening type
compounds only. Provide treatment for water-resistant gypsum board as recommended by the gypsum board manufacturer.
Protect workers, building occupants, and HVAC systems from gypsum dust.
3.4.1 Uniform Surface
Wherever gypsum board is to receive eggshell, semigloss or gloss paint finish, or where severe, up or down lighting
conditions occur, finish gypsum wall surface in accordance to GA 214 Level 5. In accordance with GA 214 Level
5, apply a thin skim coat of joint compound to the entire gypsum board surface, after the two-coat joint and
fastener treatment is complete and dry.
[3.4.2 Metal Trim for Predecorated Gypsum Board
Finish edges, ends, and joints of predecorated gypsum board, except prefinished vee joints and monolithic type
joints, with metal or plastic trim selected to match the gypsum board finish.
]3.5 SEALING
Seal openings around pipes, fixtures, and other items projecting through gypsum board and cementitious backer
units as specified in Section 07 92 00 JOINT SEALANTS Apply material with exposed surface flush with gypsum
board or cementitious backer units.
[3.5.1 Sealing for Glass Mat or Reinforced Gypsum Board Sheathing
Apply silicone sealant in a 9.5 mm 3/8 inch bead to all joints and trowel flat. Apply enough of the same sealant
to all fasteners penetrating through the glass mat gypsum board surface to completely cover the penetration when
troweled flat. Do not place [construction and materials behind sheathing until a visual inspection of sealed
joints during daylight hours has been completed by Contracting Officer.]
]3.6 FIRE-RESISTANT ASSEMBLIES
NOTE: Coordinate with the drawings to ensure that UL or GA design numbers are
indicated for fire-resistant assemblies. If review of building code requires
pressurized enclosures, include the following:
Pressurized fire-rated gypsum board enclosures shall allow the mechanical and
electrical life-safety systems to operate in accordance with the design intent.
Air pressure within elevator shaft shall be 360 Pa. 7.5 psf. Air pressure within
stair shaft shall be 240 Pa. 5.0 psf. Maximum mid-span deflection shall be
L/360.
Wherever fire-rated construction is indicated, provide materials and application methods, including types and
spacing of fasteners,[ wall[ and ceiling] framing] in accordance with the specifications contained in [UL Fire Resistance
for the Design Number(s) indicated], [or] [GA 600 for the File Number(s) indicated]. Joints of fire-rated gypsum
board enclosures shall be closed and sealed in accordance with UL test requirements or GA requirements. Seal
penetrations through rated partitions and ceilings tight in accordance with tested systems.
3.7 PATCHING
Patch surface defects in gypsum board to a smooth, uniform appearance, ready to receive finishes. [Remove predecorated
gypsum board which cannot be restored to like-new condition. Provide new predecorated gypsum board.]
3.8 SHAFTWALL FRAMING
Install the shaftwall system in accordance with the system manufacturer's published instructions. Coordinate
bucks, anchors, blocking and other items placed in or behind shaftwall framing with electrical and mechanical
work. Patch or replace fireproofing materials which are damaged or removed during shaftwall construction.
3.9 WASTE MANAGEMENT
NOTE: Diverting waste from the landfill contributes to the following LEED credit:
MR2. Coordinate with Section 01 74 19 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT.
Designer shall verify that items are able to be disposed of as specified. Army
projects include bracketed text only if pursuing this credit.
As specified in Waste Management Plan and as follows. Separate clean waste gypsum products from contaminants.
Do not include wood, plastic, metal, asphalt-impregnated gypsum board, or any gypsum board coated with glass
fiber, vinyl, decorative paper, or other finish. Place in designated area and protect from moisture and contamination.
Coordinate with Section 32 05 33 LANDSCAPE ESTABLISHMENT to identify requirements for gypsum soil amendment and
to prepare scrap gypsum board for use as soil amendment.
NOTE: Take-back programs refer to programs in which the product manufacturer
"takes-back" scrap material and/or packaging associated with its product.
[Identify manufacturer's policy for collection or return of remaining [construction scrap,] [unused material,]
[demolition scrap,] and [packaging material]. Institute demolition and construction recycling to take advantage
of manufacturer's programs. When such a service is not available, seek local recyclers to reclaim the materials.]