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SECTION 09 24 23 - Cement Stucco

DECORATIVE STUCCO FINISH

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** NOTE TO SPECIFIER ** ArcusStone Products, LLC; ArcusStonecoat and Arcusplaster products.
.
This section is based on the products of ArcusStone Products, LLC, which is located at:
180 Harbor Dr. #200
Sausalito, CA 94965
Tel: 415-339-4060
Fax: 415-339-4065
Email: request info ()
Web: www.arcusstone.com
[ Click Here ] for additional information.
This specification includes both ArcusStonecoat and Arcusplaster which are part of a fully integrated, color-coordinated system designed for both interior and exterior applications. Today's ArcusStone products benefit from numerous reformulations that have added even more strength and durability, along with a sumptuous array of colors and finishes.

1 GENERAL

1.1 SECTION INCLUDES

** NOTE TO SPECIFIER ** Delete items below not required for project.

1.1.1 Portland cement based stone coat stucco.

1.1.2 Portland cement based plaster coat stucco.

1.1.3 Related accessories.

1.2 RELATED SECTIONS

** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.

1.2.1 Section 03 30 00 - Cast-in-Place Concrete.

1.2.2 Section 04 73 00 - Manufactured Stone Masonry.

1.2.3 Section 04 40 00 - Stone Assemblies.

1.2.4 Section 05 40 00 - Cold-Formed Metal Framing.

1.2.5 Section 06 10 00 - Rough Carpentry.

1.2.6 Section 06 11 00 - Wood Framing.

1.2.7 Section 06 16 36 - Wood Panel Product Sheathing.

1.2.8 Section 07 21 16 - Blanket Insulation.

1.2.9 Section 07 60 00 - Flashing and Sheet Metal.

1.2.10 Section 07 90 00 - Joint Protection.

1.2.11 Division 8 - Doors, Windows and Glass: Windows and door frames.

1.3 REFERENCES

** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.

1.3.1 ASTM C 67 Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile.

1.3.2 ASTM C 150 Standard Specification for Portland Cement.

1.3.3 ASTM C 897 Standard Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters.

1.3.4 ASTM C 926 Standard Specification for Application of Portland Cement-Based Plaster.

1.3.5 ASTM C 932 Standard Specification for Surface-Applied Bonding Compounds for Exterior Plastering.

1.3.6 ASTM C 1063 Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster.

1.3.7 ASTM D 1784 Standard Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds.

1.4 SUBMITTALS

1.4.1 Submit under provisions of Section 01 30 00 - Administrative Requirements.

1.4.2 Product Data: Manufacturer's data sheets on each product to be used, including:

1.4.2.1 Preparation instructions and recommendations.

1.4.2.2 Storage and handling requirements and recommendations.

1.4.2.3 Installation methods.

** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected.

1.4.3 Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer's full range of available colors and patterns.

1.4.4 Verification Samples: For each finish product specified, two samples, minimum size 12 inches (3050 mm) square, representing actual product, color, and patterns.

1.4.5 Manufacturer's Certificates: Certify products meet or exceed specified requirements.

1.5 QUALITY ASSURANCE

1.5.1 Manufacturer Qualifications: Company specializing in providing the products of this section with minimum five years documented experience.

1.5.2 Installer Qualifications: Company specializing in performing Work of this section with minimum two documented projects of similar size and complexity.

** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality 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.

1.5.3 Mock-Up: Provide a minimum 4 foot by 4 foot (1.22 m by 1.22 m) mock-up for evaluation of surface finish, color, texture and application workmanship.

1.5.3.1 Locate in areas designated by Architect.

1.5.3.2 Do not proceed with remaining work until workmanship and color are approved by Architect.

1.5.3.3 Rebuild mock-up as required to produce acceptable work.

1.5.3.4 Accepted mock-up shall be comparison standard for remaining Work

1.6 PRE-INSTALLATION MEETINGS

1.6.1 Convene a minimum of one week prior to commencing work of this section.

1.6.2 Review finish locations, substrate requirements, finish placement and tolerances.

1.6.3 Review required access for prior adjacent and subsequent product installations.

1.7 DELIVERY, STORAGE, AND HANDLING

1.7.1 Deliver products in manufacturer's unopened packaging with identification labels intact until ready for installation.

1.7.2 Store materials protected from exposure to harmful environmental conditions and at temperature and humidity conditions recommended by the manufacturer.

1.8 PROJECT CONDITIONS

1.8.1 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.

1.8.2 Exterior Portland Cement Decorative Stucco: Apply exterior Portland cement coatings when ambient temperature is greater than 40 degrees F (4 degrees C) and when temperature is expected to remain above 40 degrees F (4 degrees C) for 48 hours following application.

1.8.3 Interior Portland Cement Decorative Stucco: Apply interior Portland cement coatings when minimum ambient temperature of 50 degrees F (10 degrees C) has been and continues to be maintained in building for minimum 48 hours prior to application, during application, and until cured.

2 PRODUCTS

2.1 MANUFACTURERS

2.1.1 Acceptable Manufacturer: ArcusStone Products, LLC, which is located at: 180 Harbor Dr. #200; Sausalito, CA 94965; Tel: 415-339-4060; Fax: 415-339-4065; Email: request info (); Web: www.arcusstone.com

** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.

2.1.2 Substitutions: Not permitted.

2.1.3 Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.

** NOTE TO SPECIFIER ** Select one or both products below as required to suit project requirements. If both products are specified indicate the to location and extent of each product on the Drawings or on the schedule at the end of this Section. Verify the substrates to which these coatings can be applied. Contact the manufacturer for additional information.

2.2 DECORATIVE STUCCO FINISHES

2.2.1 Portland Cement Stone Coat Stucco: ArcusStonecoat blend of limestone aggregate, bonding agents and Portland cement.

2.2.1.1 Weight: 1 lb/sf (4.88 kg/m2), average, for each 1/8 inch (3.2 mm) of thickness when tested in accordance with ASTM C 67.

2.2.1.2 Thickness: 3/8 inch (9.5 mm).

2.2.1.3 Maximum Area Requirement without Control Joints:

2.2.1.3.1 Exterior vertical and horizontal applications, 6 sf (0.56 sm).

2.2.1.3.2 Interior vertical applications, 25 sf (2.3 sm).

2.2.1.3.3 Interior horizontal applications, 6 sf (0.56 sm).

2.2.1.3.4 Countertops may be installed without control joints if installed in accordance with the manufacturer's recommendations.

Specifier Note: Select the color required below. If more than one color is required, indicate the location and extent of each on the Drawings or on the schedule at the end of this Section. Contact manufacturer for information about custom colors.

2.2.1.4 Color:

2.2.1.4.1 Dover.

2.2.1.4.2 French Cream 10.

2.2.1.4.3 French Cream 33.

2.2.1.4.4 Champagne 10.

2.2.1.4.5 Champagne 50.

2.2.1.4.6 Sienna 16.

2.2.1.4.7 Sienna 66.

2.2.1.4.8 Taupe 16.

2.2.1.4.9 Taupe 50.

2.2.1.4.10 Moss 16.

2.2.1.4.11 Moss 33.

2.2.1.4.12 Seville 16.

2.2.1.4.13 Seville 33.

2.2.1.4.14 Terra Cotta 16.

2.2.1.4.15 Terra Cotta 33.

2.2.1.4.16 Custom ______.

Specifier Note: Select the texture required below. If more than texture is required, indicate the location and extent of each on the Drawings or on the schedule at the end of this Section. Contact manufacturer for information about custom textures.

2.2.1.5 Texture:

2.2.1.5.1 Chateau.

2.2.1.5.2 Sandstone.

2.2.1.5.3 Antique.

2.2.1.5.4 Chisel.

2.2.1.5.5 Custom ______.

2.2.2 Portland Cement Plaster Coat Stucco: ArcusPlaster blend of limestone aggregate, bonding agents and Portland cement:

2.2.2.1 Weight: 1 lb/sf (4.88 kg per sm), average, for each 1/8 inch (3.2 mm) of thickness when tested in accordance with ASTM C67.

2.2.2.2 Thickness: 3/16 inch (4.8 mm).

2.2.2.3 Maximum Area Requirement without Control Joints: 144 sf (13.4 sm), with a maximum length to width ratio of 2.5 to 1.

2.2.2.4 Color:

2.2.2.4.1 Natural.

2.2.2.4.2 French Cream 13.

2.2.2.4.3 French Cream 82.

2.2.2.4.4 Champagne 16.

2.2.2.4.5 Champagne 50.

2.2.2.4.6 Sienna 13.

2.2.2.4.7 Sienna 82.

2.2.2.4.8 Mocha 10.

2.2.2.4.9 Mocha 82.

2.2.2.4.10 Moss 16.

2.2.2.4.11 Tuscan Gold.

2.2.2.4.12 Seville 16.

2.2.2.4.13 Seville 33.

2.2.2.4.14 Terra Cotta 10.

2.2.2.4.15 Terra Cotta 66.

2.2.2.4.16 Custom ______.

2.2.2.5 Texture:

2.2.2.5.1 Country.

2.2.2.5.2 Trowel.

2.2.2.5.3 Antique Semi-Smooth.

2.2.2.5.4 Antique Smooth.

2.2.2.5.5 Custom ______.

2.3 MATERIALS

2.3.1 Portland Cement: ASTM C 150.

2.3.2 Limestone Aggregates: ASTM C 897.

2.3.3 Bonding Agents: ArcusStone bonding agent is a nontoxic, non-flammable, re-emulsifying bonding agent that provides a chemical bond between the ArcusStone coating and substrate. It is suitable for use on exterior and interior, horizontal and vertical surfaces such as cement plaster brown coat, poured concrete, masonry, cement board, drywall, ceramic tile, and gypsum plaster.

2.3.4 Acrylic Admixture: ArcusAdMix is a nontoxic acrylic resin emulsion for use with ArcusStonecoat and ArcusPlaster that increases flexural and compressive strength that improves bonding between substrate and coating.

2.3.5 Water: Potable.

2.3.6 Accessories: Control joints, corner mesh, corner beads, base screeds, casing beads, reveal screeds and vented screeds shall comply with ASTM C 1063 and ASTM D 1784.

2.4 MIX

2.4.1 Proportion and mix stucco coatings in accordance with manufacturer's recommendations.

2.4.2 Mix only as much stucco finish as can be used prior to initial set.

2.4.3 Add color pigments to finish coat to match colors specified.

2.4.4 Mix materials dry, to uniform color and consistency, before adding water.

2.4.5 Protect mixtures from freezing, frost, contamination, and excessive evaporation.

2.4.6 Do not retemper mixes after initial set has occurred.

3 EXECUTION

3.1 EXAMINATION

3.1.1 Do not begin installation until substrates have been properly prepared.

3.1.2 Verify surfaces to be coated are dry and clean in accordance with manufacturer's recommendations.

3.1.3 If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.

3.2 PREPARATION

3.2.1 Clean and prepare surfaces in accordance with manufacturer's instructions.

3.2.2 Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.

3.2.3 Protect glass and adjacent work from decorative stucco coating application using protective plastic, tarps, Kraft paper, and non-residue tape.

** NOTE TO SPECIFIER ** Select the surface preparation for the surfaces to which decorative stucco is to be applied from the following paragraphs. Delete the paragraphs not required.

3.2.4 Concrete Masonry and Brick: Clean concrete and masonry surfaces in accordance with ASTM C 926.

** NOTE TO SPECIFIER ** Note that Retaining walls, constructed of concrete masonry units and brick, must have either a waterproofing material applied to; the back side of the wall prior to any backfill of earth against the wall, or applied to the face of the wall. If applied to the face, the material must be non-asphalt based and compatible with the basecoat and ArcusStone finish.

3.2.4.1 Prepare Substrate

3.2.4.1.1 Inspect brick and masonry units for adhesion strength and re-secure as required.

3.2.4.1.2 Grout and mortar must be struck off flush with the face of the masonry.

3.2.4.1.3 Remove paint by mechanical abrasion using: bead blasting, sand blasting, rotary steel wire brushing using an angle grinder or other methods to effectively open the coating and produce a surface profile similar to 80 grit sand paper. Completely removing the paint is usually not required.

3.2.4.1.4 Pressure washing, operated at approximately 1200 psi with a flare tip, may be used where possible.

3.2.4.1.5 Clean all surfaces of any efflorescence, mold, scale, soot, dirt or any other surface contaminants that may interfere with a good bond. Rinse with clean water.

3.2.4.2 Apply Basecoat

3.2.4.2.1 Bonding Agent: Apply bonding agent in accordance with ASTM C 932. Using a roller, brush or sprayer, apply a generous and uniform coat of per manufacturer's application instructions. Let dry before applying brown coat.

3.2.4.2.2 Apply brown coat, an acrylic modified fiber reinforced brown coat, thick enough to keep grout joints from "telegraphing" through to the finish coat or, typically 1/4 inch (6 mm) to 3/8 inch (9.5 mm). Lightly scratch horizontally to create more tooth.

3.2.4.2.3 Allow to cure for 48 hours.

3.2.4.2.4 Repair any cracks in the brown coat using 6 inch (152 mm) wide detail mesh embedded in cementitious basecoat.

3.2.5 Poured Vertical Concrete:

** NOTE TO SPECIFIER ** Note that Retaining walls, constructed of concrete must have either a waterproofing material applied to; the back side of the wall prior to any backfill of earth against the wall, or applied to the face of the wall. If applied to the face, the material must be non-asphalt based and compatible with the basecoat and ArcusStone finish.