HomeMy WebLinkAbout09 25 13 Acrylic Textured Finish.docPEDCOR SQUARE; BUILDING 5
09 25 13 -
PEDCOR SQUARE Issue Date 12.18.15 ACRYLIC TEXTURED FINISH
PEDCOR SQUARE; BUILDING 5
SECTION 09 25 13 - ACRYLIC TEXTURED FINISH
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. This Section includes the following:
1. Acrylic textured finish over glass mat gypsum sheathing.
2. Referenced on Drawings as direct applied finish system.
1.3 REFERENCES
A. ASTM D 4541 - Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers.
B. ASTM E 84 - Test Method for Surface Burning Characteristics of Building Materials.
C. Gypsum Association: GA-253 Application of Gypsum Sheathing.
1.4 SUBMITTALS
A. Product Data: For each type of product indicated.
B. Shop Drawings: Show locations, fabrication, and installation of control joints, and reveals and
trim; include plans, elevations, sections, details of components, and attachments to other work.
C. Samples: For the following products:
1. Trim Accessories: Full-size Sample in 12-inch length for each trim accessory.
2. Textured Finishes: 8 inches x 8 inches for each textured finish and color on rigid backing.
1.5 QUALITY ASSURANCE
A. Fire-Resistance-Rated Assemblies: Provide materials and construction identical to those tested
in assembly indicated according to ASTM E 119 by a testing and inspecting agency.
B. 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 a
testing and inspecting agency.
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C. Mockups: Provide a full-thickness finish mockup at Architect's request for each type and finish
of acrylic textured finish and substrate to demonstrate aesthetic effects and set quality
standards for materials and execution.
1. Architect will select representative surfaces and conditions for application of each type of
gypsum veneer plaster and substrate.
2. Provide mockups of partitions of sizes requested. Apply acrylic textured finishes,
according to requirements for the completed Work, after permanent lighting and other
environmental services have been activated.
3. Approved mockups may become part of the completed Work if undisturbed at time of
Substantial Completion.
D. Manufacturer Requirements:
1. Source Limitations: Obtain acrylic textured finish products, including joint reinforcing
tape, and embedded material form a single manufacturer.
2. Manufacturer of coatings has been manufacturing coatings for a period of at least fifteen
years.
E. Contractor Requirements:
1. Provide a list of at least 3 projects successfully completed, using the specified materials,
within the last 5 years.
2. Contractor has been engaged in application of acrylic textured finish application for a
minimum of three years.
3. Skilled applicators are employed to execute the work, and they have a minimum of three
years experience with the materials, methods, and requirements of the specified work.
4. Provide the equipment, manpower and supervision on the job site to install the products
in compliance with the manufacturer's published specifications and details, and with
project plans and specifications.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials in original sealed packages, and containers, bearing brand name and
identification of manufacturer or supplier.
B. Store materials inside under cover and keep them dry and protected against damage from
weather, direct sunlight, surface contamination, corrosion, construction traffic, and other causes.
1.7 PROJECT CONDITIONS
A. Environmental Limitations: Comply with manufacturer's written recommendations.
B. Application Temperatures: Ensure that temperatures are not less than 40 deg F or more than
80 deg F for 7 days before application of acrylic textured finish products, continuously during
application, and after application until materials are dry.
1.8 WARRANTY
A. Provide manufacturer's standard written materials warranty.
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PEDCOR SQUARE Issue Date 12.18.15 ACRYLIC TEXTURED FINISH
PEDCOR SQUARE; BUILDING 5
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Acrylic Based Textured Coating System for Application Over Glass Mat Gypsum Sheathing at
Soffits:
1. Products: Subject to compliance with requirements, provide one of the following:
a. Parex Acrylic Finish System.
b. STO Quik Gold Finish System for Soffits.
2. Systems:
a. Parex Acrylic Finish System:
1) Base Coat: Either Parex 121, 121 Dry, 121 XL base coat and adhesive or
302 ABC–N1 base coat and adhesive.
2) Reinforcing Mesh: Parex 355 Standard Mesh.
3) Prime Coat: Either Parex 310 Primer or 313 Sanded Primer.
4) Finish Coat: Parex factory-mixed acrylic-polymer based finish coat;
integrally colored; texture as specified.
b. Sto Quik Gold Finish System:
1) Base Coat: Either Sto BTS-Plus, Sto RFP, or Sto BTS Fast Set.
2) Reinforcing Mesh:
a) Standard: Sto Mesh.
b) Specialty: Sto Corner Mat and Sto Detail Mesh.
3) Prime Coat: Sto Primer.
4) Finish Coat: Sto acrylic based or silicone enhanced textured wall coating.
2.2 PRODUCTS
A. Performance Requirements
1. Surface Burning: ASTM E 84 Less than Flame Spread 25 0
Less than Smoke developed 450 5
2. Flexibility: ASTM D 522 Pass at 40 deg F.
3. Water Vapor Transmission: ASTM D 1653 28 Perms
4. VOC Less than 100gm/L
5. Mildew Resistance: ASTM G 21 Pass
6. Abrasion Resistance: Taber Pass
7. Adhesion: ASTM C 297 Greater than 15 psi - drywall
Greater than 125 psi - concrete
Greater than 100 psi - primed metal
8. Impact Resistance: ASTM D 2796 No failure up to70 in-lb.
9. Tensile Strength: ASTM D 412 Greater than 25 psi.
B. Materials
1. Surface Preparation
a. Refer to Specification Section 04 20 00 for surface preparation of unit masonry.
b. Refer to Specification Section 06 16 00 for surface preparation of sheathing.
i. Follow sheathing manufacturer's written recommendations.
2. Finish Coating
a. Finish texture to be selected by Architect.
b. Color to be selected by Architect.
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2.3 SUBSTRATES
A. Refer to Specification subsections 2.5 and 3.2 below, and Specification Section 06 16 00
“Sheathing” for substrate information.
2.4 TRIM ACCESSORIES
A. Standard Trim: Provided or approved by manufacturer for use in acrylic texture finish
applications indicated.
1. Material: Galvanized or aluminum-coated steel sheet or rolled zinc.
2. Shapes:
a. Corner bead.
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.
e. Control joints.
B. Aluminum Trim: Extruded accessories of profiles and dimensions indicated.
1. Available Manufacturers: Subject to compliance with requirements, manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. Fry Reglet Corporation.
b. Gordon Inc.
c. Pittcon Industries.
2. Aluminum: Alloy and temper with not less than the strength and durability properties of
ASTM B 221, Alloy 6063-T5.
3. Finish: Manufacturer's standard.
2.5 JOINT REINFORCING MATERIALS
A. Comply with manufacturer's written recommendations for each application indicated.
2.6 AUXILIARY MATERIALS
A. Comply with manufacturer's written recommendations for each application indicated.
2.7 MIXING
A. Comply with manufacturer's written recommendations for each application indicated.
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PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with
requirements for installation tolerances and other conditions affecting performance.
B. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A. Glass Mat Gypsum Sheathing Substrates: Prepare according to acrylic textured finish
manufacturer's written recommendations and as follows:
1. Replace damaged or deteriorated board.
2. Remove dust from surface with soft nylon brush.
3. Refer to Specification Section 06 16 00 “Sheathing.”
3.3 INSTALLATION OF ACRYLIC TEXTURED FINISH AT GLASS MAT GYPSUM SHEATHING
SOFFITS
A. Accessory Installation:
1. Install appropriate starter accessory.
2. Install appropriate casing bead accessories at system terminations in accordance with
locations indicated on architectural drawings. Maintain a gap of ¼ inch minimum between
the accessory and the abutment to form a sealant joint.
3. Follow accessory manufacturer’s instructions for accessory butt joints to maintain water
tightness.
4. Provide expansion joints in sheathing at minimum intervals of 30 feet up to a maximum
area of 900 s.f. wherever the system abuts dissimilar construction or an existing joint
occurs in construction. Fit sheathing snugly into accessories prior to attachment.
5. Fasten surface mount accessories through the sheathing into the framing at locations
indicated on the architectural drawings. Where necessary, level surfaces such as outside
corners with appropriate leveling material to maintain plumbness and squareness.
B. Priming
1. Apply primer as recommended by manufacturer.
C. Base Coat Application
1. Apply base coat over the sheathing with proper spray equipment or a stainless steel
trowel to a uniform thickness of approximately 1/16 inch. Apply base coat in strips of 40
inches and immediately embed reinforcing mesh into the wet base coat by troweling from
the center to the edge of the mesh. Avoid wrinkles in the mesh. Overlap the mesh
minimum 2 -1/2 inches at the mesh joints and stagger mesh overlaps minimum 8 inches
from the sheathing joints.
2. Where surface mounted accessories are used, such as deep “V” expansion joints,
overlap the mesh from the sheathing ontp the perforated accessory flange.
3. The mesh must be fully embedded so that no mesh color shows through the base coat
when it is dry. Feather mesh overlaps to avoid reading the mesh through the finish
coating. Allow base coat to thoroughly dry before applying primer or finish.
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4. For soffit applications that will utilize a heavy texture finish coat to conceal minor surface
irregularities, the full mesh may be deleted. Tape joints with a 6 inch wide strip of mesh
embedded in base coat, then apply minimum 1/16 inch thick base coat over the entire
surface of the sheathing. Feather the taped sheathing joints to avoid reading the joints
through the finish coating.
D. Finish Coat Installation
1. Apply finish coat to dry primed/base coat surface only after the base coat/primer has
thoroughly dried. Apply finish coat in a uniform thickness in accordance with the
following procedures:
a. Apply with a stainless steel trowel or spray equipment.
b. Apply in a continuous application and work to a wet edge.
c. Coordinate work to protect work from damage by other trades.
d. Apply material to match approved sample or mock-up.
e. Do not apply separate batches side-by-side.
f. Do not apply over irregular or unprepared surfaces or surfaces not in compliance
with project specifications.
g. Avoid application in direct sunlight.
h. Weather conditions affect application and drying time. Hot or dry conditions limit
working time and accelerate drying and may require adjustments in scheduling
of work to achieve desired results; cool or damp conditions extend working time
and retard drying and may require added measures of protection against wind,
dust, dirt, rain, and freezing. Adjust work schedule and provide protection.
E. Sealant Installation
1. Seal all open joints in the system with appropriate sealant in accordance with sealant
manufacturer’s recommendations to prevent any water from getting into or behind the
system.
3.4 PROTECTION
A. Provide protection of installed coating from damage from dust and dirt, freezing, continuous
high humidity, and other causes during remainder of the construction period.
END OF SECTION 09 25 13