HomeMy WebLinkAbout09 29 00 Gypsum BoardTHE KENT
09 29 00 - 1
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
SECTION 09 29 00 - GYPSUM BOARD
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Interior gypsum board.
2. Tile backing panels.
3. Texture finishes.
B. Related Requirements:
1. Section 06 10 00 “Rough Carpentry” for additional wood framing to support ceiling
system.
2. Section 06 16 00 "Sheathing" for gypsum sheathing for exterior walls.
3. Section 09 22 26 "Gypsum Ceiling Suspension System" for non-structural metal framing
and suspension systems that support gypsum board panels.
1.3 ACTION SUBMITTALS
A. Product Data: For each type of product.
B. Samples for Initial Selection: For each type of trim accessory and textured finish indicated.
C. Samples for Verification: For the following products:
1. Trim Accessories: Full-size Sample in 12-inch- long length for each trim accessory
indicated.
2. Textured Finishes: Manufacturer's standard size for each textured finish indicated and
on same backing indicated for Work.
1.4 QUALITY ASSURANCE
A. Mockups: Build mockups, if requested in writing by Architect, of at least 100 sq. ft. in surface
area to demonstrate aesthetic effects and to set quality standards for materials and execution.
1. Build mockups for the following:
a. Each level of gypsum board finish indicated for use in exposed locations.
b. Each texture finish indicated.
2. Apply or install final decoration indicated, including painting and wallcoverings, on
exposed surfaces for review of mockups.
3. Simulate finished lighting conditions for review of mockups.
4. Subject to compliance with requirements, approved mockups may become part of the
completed Work if undisturbed at time of Substantial Completion.
THE KENT
09 29 00 - 2
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
1.5 DELIVERY, STORAGE AND HANDLING
A. Store materials inside under cover and keep them dry and protected against weather,
condensation, direct sunlight, construction traffic, and other potential causes of damage. Stack
panels flat and supported on risers on a flat platform to prevent sagging.
1.6 FIELD CONDITIONS
A. Environmental Limitations: Comply with ASTM C 840 requirements or gypsum board
manufacturer's written instructions, whichever are more stringent.
B. Do not install paper-faced gypsum panels until installation areas are enclosed and conditioned.
C. Do not install panels that are wet, moisture damaged, and mold damaged.
1. Indications that panels are wet or moisture damaged include, but are not limited to,
discoloration, sagging, or irregular shape.
2. Indications that panels are mold damaged include, but are not limited to, fuzzy or
splotchy surface contamination and discoloration.
PART 2 - PRODUCTS
2.1 PERFORMANCE REQUIREMENTS
A. Fire-Resistance-Rated Assemblies: For fire-resistance-rated assemblies, provide materials and
construction identical to those tested in assembly indicated according to ASTM E 119 by an
independent testing agency.
B. STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical
to those tested in assembly indicated according to ASTM E 90 and classified according to
ASTM E 413 by an independent testing agency.
C. Ceiling and wall materials shall comply with the requirements of the California Department of
Public Health's "Standard Method for the Testing and Evaluation of Volatile Organic Chemical
Emissions from Indoor Sources Using Environmental Chambers."
2.2 GYPSUM BOARD, GENERAL
A. Recycled Content: Postconsumer recycled content plus one-half of pre-consumer recycled
content not less than 25 percent.
B. Size: Provide maximum lengths and widths available that will minimize joints in each area and
that correspond with support system indicated.
2.3 INTERIOR GYPSUM BOARD
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. AmCertainTeed Corp.
THE KENT
09 29 00 - 3
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
2. Georgia-Pacific Gypsum LLC. DensArmour Plus Fireguard Interior Panel.
3. Lafarge North America Inc.
4. National Gypsum Company.
5. USG Corporation.
6. American Gypsum.
B. Gypsum Board, Type X: ASTM C 1396.
1. Thickness: 5/8 inch.
2. Long Edges: Tapered.
C. Moisture and Mold-Resistant Gypsum Board: ASTM C 1396. With moisture- and mold-resistant
core and paper surfaces.
1. Core: 5/8 inch, Type X.
2. Long Edges: Tapered.
3. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D 3274.
2.4 SPECIALTY GYPSUM BOARD
A. Glass-Mat Interior Gypsum Board: ASTM C 1658. With fiberglass mat laminated to both sides.
Specifically designed for interior use.
1. Product: Subject to compliance with requirements, provide the following:
a. Georgia-Pacific Gypsum LLC; DensArmour Plus.
2. Core: 5/8 inch, Type X.
3. Long Edges: Tapered.
4. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D 3274.
2.5 TILE BACKING PANELS
A. Cementitious Backer Units: ANSI A118.9 and ASTM C 1288 or ASTM C 1325, with
manufacturer's standard edges.
1. Products: Subject to compliance with requirements, provide one of the following:
a. C-Cure; C-Cure Board 990.
b. CertainTeed Corp.; FiberCement BackerBoard.
c. Custom Building Products; Wonderboard.
d. National Gypsum Company, Permabase Cement Board.
e. USG Corporation; DUROCK Cement Board.
f. Georgia-Pacific LLC, 5/8 inch, Denshield Fireguard Tile Backer.
2. Thickness: 1/2 inch.
3. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D 3274.
2.6 TRIM ACCESSORIES
A. Interior Trim: ASTM C 1047.
1. Material: Galvanized or aluminum-coated steel sheet, rolled zinc, plastic, or paper-faced
galvanized-steel sheet.
2. Shapes:
a. Cornerbead.
b. LC-Bead: J-shaped; exposed long flange receives joint compound.
c. L-Bead: L-shaped; exposed long flange receives joint compound.
d. U-Bead: J-shaped; exposed short flange does not receive joint compound.
THE KENT
09 29 00 - 4
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
e. Expansion (control) joint.
B. Exterior Trim: ASTM C 1047.
1. Material: Hot-dip galvanized-steel sheet, plastic, or rolled zinc.
2. Shapes:
a. Cornerbead.
b. LC-Bead: J-shaped; exposed long flange receives joint compound.
c. Expansion (Control) Joint: One-piece, rolled zinc with V-shaped slot and
removable strip covering slot opening.
C. Aluminum Trim: Extruded accessories of profiles and dimensions indicated.
1. Manufacturers: Subject to compliance with requirements, provide products by one of the
following except where specific products are indicated:
a. Fry Reglet Corp.
b. Gordon, Inc.
1) Interior Specialties; X Series Trim.
c. Pittcon Industries.
d. Tamlyn.
1) Xtreme Trim; XOCR.
2. Aluminum: Alloy and temper with not less than the strength and durability properties of
ASTM B 221, Alloy 6063-T5.
3. Finish: Corrosion-resistant primer compatible with joint compound and finish materials
specified.
2.7 JOINT TREATMENT MATERIALS
A. General: Comply with ASTM C 475.
B. Joint Tape:
1. Interior Gypsum Board: Paper.
2. Exterior Gypsum Soffit Board: Paper.
3. Glass-Mat Gypsum Sheathing Board: 10-by-10 glass mesh.
4. Tile Backing Panels: As recommended by panel manufacturer.
C. Joint Compound for Interior Gypsum Board: For each coat, use formulation that is compatible
with other compounds applied on previous or for successive coats.
1. Prefilling: At open joints and damaged surface areas, use setting-type taping compound.
2. Embedding and First Coat: For embedding tape and first coat on joints, fasteners, and
trim flanges, use setting-type taping compound.
a. Use setting-type compound for installing paper-faced metal trim accessories.
3. Fill Coat: For second coat, use setting-type, sandable topping compound.
4. Finish Coat: For third coat, use setting-type, sandable topping compound.
5. Skim Coat: For final coat of Level 5 finish, use setting-type, sandable topping compound.
D. Joint Compound for Exterior Applications:
1. Exterior Gypsum Soffit Board: Use setting-type taping compound and setting-type,
sandable topping compound.
2. Glass-Mat Gypsum Sheathing Board: As recommended by sheathing board
manufacturer.
E. Joint Compound for Tile Backing Panels:
1. Cementitious Backer Units: As recommended by backer unit manufacturer.
THE KENT
09 29 00 - 5
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
2.8 AUXILIARY MATERIALS
A. General: Provide auxiliary materials that comply with referenced installation standards and
manufacturer's written instructions.
B. Laminating Adhesive: Adhesive or joint compound recommended for directly adhering gypsum
panels to continuous substrate.
1. Adhesives shall have a VOC content of 50 g/L or less.
2. Adhesive shall comply with the testing and product requirements of the California
Department of Public Health's "Standard Method for the Testing and Evaluation of
Volatile Organic Chemical Emissions from Indoor Sources Using Environmental
Chambers."
C. Steel Drill Screws: ASTM C 1002 unless otherwise indicated.
1. Use screws complying with ASTM C 954 for fastening panels to steel members from
0.033 to 0.112 inch thick.
2. For fastening cementitious backer units, use screws of type and size recommended by
panel manufacturer.
D. Acoustical Sealant: Manufacturer's standard non-sag, paintable, non-staining latex sealant
complying with ASTM C 834. Product effectively reduces airborne sound transmission through
perimeter joints and openings in building construction as demonstrated by testing representative
assemblies according to ASTM E 90.
1. Products: Subject to compliance with requirements, available products that may be
incorporated into the Work include, but are not limited to, the following:
a. Grabber Construction Products; Acoustical Sealant GSC.
b. Specified Technologies, Inc.; Smoke N Sound Acoustical Sealant.
c. USG Corporation; SHEETROCK Acoustical Sealant.
2. Sealant shall have a VOC content of 250 g/L or less.
3. Sealant shall comply with the testing and product requirements of the California
Department of Public Health's "Standard Method for the Testing and Evaluation of
Volatile Organic Chemical Emissions from Indoor Sources Using Environmental
Chambers."
E. Thermal Insulation: As specified in Section 07 21 00 "Thermal Insulation."
F. Vapor Retarder: As specified in Section 07 26 00 "Vapor Retarders."
2.9 TEXTURE FINISHES
A. Interior Finishes:
1. Primer: As recommended by textured finish manufacturer.
2. Non-Aggregate Finish: Pre-mixed, vinyl texture finish for spray application:
a. Products: Subject to compliance with requirements, available products
that may be incorporated into the Work include, but are not limited to, the
following:
1) Grabber Construction Products; Acoustical Sealant GSC.
2) Specified Technologies, Inc.; Smoke N Sound Acoustical
Sealant.
3) USG Corporation; SHEETROCK Acoustical Sealant.
3. Texture: Orange Peel.
THE KENT
09 29 00 - 6
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
B. Exterior Finishes: Water-based, job-mixed, aggregated, drying-type texture finish for
spray application.
1. Refer to Specification Section 09 25 13 “Acrylic Textured Finish.”
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine areas and substrates including welded hollow-metal frames and support framing, with
Installer present, for compliance with requirements and other conditions affecting performance
of the Work.
B. Examine panels before installation. Reject panels that are wet, moisture damaged, and mold
damaged.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 APPLYING AND FINISHING PANELS, GENERAL
A. Comply with ASTM C 840.
B. Install ceiling panels across framing to minimize the number of abutting end joints and to avoid
abutting end joints in central area of each ceiling. Stagger abutting end joints of adjacent panels
not less than one framing member.
C. Install panels with face side out. Butt panels together for a light contact at edges and ends with
not more than 1/16 inch of open space between panels. Do not force into place.
D. Locate edge and end joints over supports, except in ceiling applications where intermediate
supports or gypsum board back-blocking is provided behind end joints. Do not place tapered
edges against cut edges or ends. Stagger vertical joints on opposite sides of partitions. Do not
make joints other than control joints at corners of framed openings.
E. Form control and expansion joints with space between edges of adjoining gypsum panels.
F. Cover both faces of support framing with gypsum panels in concealed spaces (above ceilings,
etc.), except in chases braced internally.
1. Unless concealed application is indicated or required for sound, fire, air, or smoke
ratings, coverage may be accomplished with scraps of not less than 8 sq. ft. in area.
2. Fit gypsum panels around ducts, pipes, and conduits.
3. Where partitions intersect, structural members projecting below underside of floor/roof
slabs and decks, cut gypsum panels to fit profile formed by structural members; allow
1/4- to 3/8-inch- wide joints to install sealant.
G. Isolate perimeter of gypsum board applied to non-load-bearing partitions at structural
abutments. Provide 1/4- to 1/2-inch- wide spaces at these locations and trim edges with edge
trim where edges of panels are exposed. Seal joints between edges and abutting structural
surfaces with acoustical sealant.
THE KENT
09 29 00 - 7
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
H. Attachment to Steel Framing: Attach panels so leading edge or end of each panel is attached to
open (unsupported) edges of stud flanges first.
I. STC-Rated Assemblies: Seal construction at perimeters, behind control joints, and at openings
and penetrations with a continuous bead of acoustical sealant. Install acoustical sealant at both
faces of partitions at perimeters and through penetrations. Comply with ASTM C 919 and with
manufacturer's written instructions for locating edge trim and closing off sound-flanking paths
around or through assemblies, including sealing partitions above acoustical ceilings.
J. Install sound attenuation blankets before installing gypsum panels unless blankets are readily
installed after panels have been installed on one side.
3.3 APPLYING INTERIOR GYPSUM BOARD
A. Install interior gypsum board in the following locations:
1. Type X: Where required for fire-resistance-rated assembly and vertical surfaces unless
otherwise indicated.
2. Impact-Resistant Type: As indicated on Drawings.
3. Moisture and Mold-Resistant Type: As indicated on Drawings and called for in
specifications.
4. Glass-Mat Interior Type: As indicated on Drawings.
5. Skim-Coated Type: As indicated on Drawings.
B. Single-Layer Application:
1. On ceilings, apply gypsum panels before wall/partition board application to greatest
extent possible and at right angles to framing unless otherwise indicated.
2. On partitions/walls, apply gypsum panels vertically (parallel to framing) unless otherwise
indicated or required by fire-resistance-rated assembly, and minimize end joints.
a. Stagger abutting end joints not less than one framing member in alternate courses
of panels.
b. At stairwells and other high walls, install panels horizontally unless otherwise
indicated or required by fire-resistance-rated assembly.
3. On Z-shaped furring members, apply gypsum panels vertically (parallel to framing) with
no end joints. Locate edge joints over furring members.
4. Fastening Methods: Apply gypsum panels to supports with steel drill screws.
C. Multilayer Application:
1. On ceilings, apply gypsum board indicated for base layers before applying base layers on
walls/partitions; apply face layers in same sequence. Apply base layers at right angles to
framing members and offset face-layer joints one framing member, 16 inches minimum,
from parallel base-layer joints, unless otherwise indicated or required by fire-resistance-
rated assembly.
2. On partitions/walls, apply gypsum board indicated for base layers and face layers
vertically (parallel to framing) with joints of base layers located over stud or furring
member and face-layer joints offset at least one stud or furring member with base-layer
joints unless otherwise indicated or required by fire-resistance-rated assembly. Stagger
joints on opposite sides of partitions.
3. On Z-shaped furring members, apply base layer vertically (parallel to framing) and face
layer either vertically (parallel to framing) or horizontally (perpendicular to framing) with
vertical joints offset at least one furring member. Locate edge joints of base layer over
furring members.
THE KENT
09 29 00 - 8
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
4. Fastening Methods: Fasten base layers and face layers separately to supports with
screws with screws; fasten face layers with adhesive and supplementary fasteners.
3.4 APPLYING TILE BACKING PANELS
A. Cementitious Backer Units: ANSI A108.11, at locations indicated to receive tile.
B. Where tile backing panels abut other types of panels in same plane, shim surfaces to produce a
uniform plane across panel surfaces.
3.5 INSTALLING TRIM ACCESSORIES
A. General: For trim with back flanges intended for fasteners, attach to framing with same
fasteners used for panels. Otherwise, attach trim according to manufacturer's written
instructions.
B. Control Joints: Install control joints according to ASTM C 840 and in specific locations approved
by Architect for visual effect.
C. Interior Trim: Install in the following locations:
1. Cornerbead: Use at outside corners unless otherwise indicated.
2. LC-Bead: Use at exposed panel edges.
3. L-Bead: Use where indicated.
4. U-Bead: Use at exposed panel edges and where indicated.
D. Exterior Trim: Install in the following locations:
1. Cornerbead: Use at outside corners.
2. LC-Bead: Use at exposed panel edges.
E. Aluminum Trim: Install in locations indicated on Drawings.
3.6 FINISHING GYPSUM BOARD
A. General: Treat gypsum board joints, interior angles, edge trim, control joints, penetrations,
fastener heads, surface defects, and elsewhere as required to prepare gypsum board surfaces
for decoration. Promptly remove residual joint compound from adjacent surfaces.
B. Prefill open joints and damaged surface areas.
C. Apply joint tape over gypsum board joints, except for trim products specifically indicated as not
intended to receive tape.
D. Gypsum Board Finish Levels: Finish panels to levels indicated below and according to
ASTM C 840:
1. Level 1: Ceiling plenum areas, concealed areas, and where indicated.
2. Level 2: Panels that are substrate for tile.
3. Level 3: Where indicated on Drawings.
4. Level 4: At panel surfaces that will be exposed to view unless otherwise indicated.
a. Primer and its application to surfaces are specified in Section 09 91 00 "Painting."
5. Level 5: Where indicated on Drawings.
THE KENT
09 29 00 - 9
THE KENT Issue Date 05.09.18 GYPSUM BOARD
THE KENT
a. Primer and its application to surfaces are specified in Section 09 91 00 "Painting."
E. Glass-Mat Gypsum Sheathing Board: Finish according to manufacturer's written instructions for
use as exposed soffit board.
F. Cementitious Backer Units: Finish according to manufacturer's written instructions.
3.7 APPLYING TEXTURE FINISHES
A. Surface Preparation and Primer: Prepare and apply primer to gypsum panels and other
surfaces receiving texture finishes. Apply primer to surfaces that are clean, dry, and smooth.
B. Texture Finish Application: Mix and apply finish using powered spray equipment, to produce a
uniform texture matching approved mockup and free of starved spots or other evidence of thin
application or of application patterns.
C. Prevent texture finishes from contacting surfaces not indicated to receive texture finish by
covering them with masking agents, polyethylene film, or other means. If, despite these
precautions, texture finishes contact these surfaces, immediately remove droppings and
overspray to prevent damage according to texture-finish manufacturer's written instructions.
3.8 PROTECTION
A. Protect adjacent surfaces from drywall compound and promptly remove from floors and other
non-drywall surfaces. Repair surfaces stained, marred, or otherwise damaged during drywall
application.
B. Protect installed products from damage from weather, condensation, direct sunlight,
construction, and other causes during remainder of the construction period.
C. Remove and replace panels that are wet, moisture damaged, and mold damaged.
1. Indications that panels are wet or moisture damaged include, but are not limited to,
discoloration, sagging, or irregular shape.
2. Indications that panels are mold damaged include, but are not limited to, fuzzy or
splotchy surface contamination and discoloration.
END OF SECTION 09 29 00