DESIGN A/E NOTE - GUIDE SPECIFICATION CONVENTIONS
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Rev 19JUN09 j:\Projects\Active\com-deca_design_criteria_revisions-04071\Guide Specifications\TJG Innformation
SECTION 09932
EXTERIOR CONCRETE STAINS
PART 1 - GENERAL
1.1 SUMMARY
1.1.1. Section Includes
a. Surface preparation and the application of concrete stains to exterior concrete surfaces.
1.2 SUBMITTALS
1.2.1. Product Data
a. For each type of stain indicated.
(1) Material List: An inclusive list of required stain materials. Indicate each material and cross-reference the specific stain system and application. Identify each exterior concrete stain material by manufacturer's catalog number and general classification.
(2) Manufacturer's Information: Manufacturer's technical information, including label analysis and instructions for handling, storing, and applying each exterior concrete stain.
1.2.2. Samples for Verification
a. For each color and stain material to be applied, with texture to simulate actual conditions, on representative Samples of actual substrates.
(1) Use representative colors when preparing Samples for review. Resubmit until required color and texture are achieved.
(2) Provide list of materials and applications for each coat of each Sample. Label each Sample for location and application.
(3) Submit Samples on the following substrates for Contracting Officer's review of color and texture only:
(a) Stained Concrete: Provide 8- by 10-inch Samples of each stained concrete finish to be used on representative surfaces.
1.2.3. Submittal List
Reference Submittal Item Quantity Action
1.2.1 Product Data X R
1.2.2 Samples for Verification X R
X Submit quantity specified in Division 1 Section “Administrative Requirements.”
R Review each submittal, mark to indicate action taken, and return.
1.3 QUALITY ASSURANCE
1.3.1. Applicator Qualifications
a. A firm or individual experienced in applying exterior concrete stains similar in material, design, and extent to those indicated for this Project, whose work has resulted in applications with a record of successful in-service performance.
1.3.2. Benchmark Samples (Mockups)
a. Provide a full-coat benchmark finish sample for each type of stain and substrate required. Duplicate finish of approved sample Submittals.
(1) Location: Apply each type of stain where indicated on Drawings, for each color.
(a) Wall Surfaces: Provide each sample on at least a 2- by 2-foot area.
(2) Apply benchmark samples according to requirements for the completed Work.
(a) After finishes are accepted, Contracting Officer will use benchmark samples to evaluate stain systems of a similar nature.
(3) Final approval of colors will be from benchmark samples.
1.4 DELIVERY, STORAGE, AND HANDLING
1.4.1. Delivery
a. Deliver materials to Project site in manufacturer's original, unopened containers bearing manufacturer's name and label and the following information:
(1) Product name or title of material.
(2) Product description (generic classification).
(3) Manufacturer's stock number and date of manufacture.
(4) Contents by volume, for pigment and vehicle constituents.
(5) Thinning instructions.
(6) Application instructions.
(7) Color name and number.
(8) Handling instructions and precautions.
(9) VOC content.
b. Store materials not in use in tightly covered containers in a well-ventilated area at a minimum ambient temperature of 45 deg F. Maintain storage containers in a clean condition, free of foreign materials and residue.
(1) Protect from freezing. Keep storage area neat and orderly. Remove oily rags and waste daily.
1.5 PROJECT CONDITIONS
1.5.1. Temperature Limitations
a. Apply stains only when temperatures of surfaces to be stained and the surrounding air are between 50 deg F and 90 deg F for latex-based stain.
1.5.2. Weather Limitations
a. Do not apply stain in snow, rain, fog, or mist; when relative humidity exceeds 85 percent; when temperatures are less than 5 deg F above the dew point; or to damp or wet surfaces.
(1) Allow wet surfaces to dry thoroughly and attain temperature and conditions specified before starting or continuing with coating operation.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
BasisofDesign Products: To establish the significant qualities related to type, function, dimension, inservice performance, physical properties, appearance, and other characteristics for purposes of evaluating comparable products of other manufacturers, a specific manufacturer's product is named and accompanied by the words "basis of design," including make or model number or other designation. Subject to compliance with requirements, provide either the named products or equal products.
2.2 EXTERIOR CONCRETE STAIN MATERIALS, GENERAL
2.2.1. Stain-Material Quality
a. Provide manufacturer's best-quality stain material of the various stain types specified that are factory formulated and recommended by manufacturer for application indicated. Stain-material containers not displaying manufacturer's product identification will not be acceptable.
2.2.2. Proprietary Names
a. Use of manufacturer's proprietary product names to designate colors or materials is not intended to imply that products named are required to be used to the exclusion of equivalent products of other manufacturers. Furnish manufacturer's material data and certificates of performance for proposed substitutions.
2.3 EXTERIOR CONCRETE STAIN PRODUCTS
2.3.1. Acrylic Penetrating Pigmented Stain
a. Factory-formulated modified acrylic concrete stain applied at spreading rate recommended by manufacturer.
b. Colors: As indicated
2.3.2. Basis-of-Design Product: United Coatings.
a. Canyon Tone Stain W.
PART 3 - EXECUTION
3.1 EXAMINATION
3.1.1. General
a. Examine substrates, areas, and conditions, with Applicator present, for compliance with requirements for stain application. Surfaces to be stained must be thoroughly dry before stains are applied.
(1) Proceed with stain application only after unsatisfactory conditions have been corrected.
(2) Start of application will be construed as Applicator's acceptance of surfaces and conditions.
3.1.2. Coordination of Work
a. Review other Sections in which coatings are provided to ensure compatibility of the total system for various substrates.
3.2 PREPARATION
3.2.1. General
a. Remove hardware and hardware accessories, plates, machined surfaces, lighting fixtures, and similar items already installed that are not to be stained. If removal is impractical or impossible because of size or weight of item, provide surface-applied protection before surface preparation and staining.
(1) After completing staining operations, reinstall items removed using workers skilled in trades involved.
3.2.2. Surface Preparation
a. Clean and prepare surfaces to be stained according to manufacturer's written instructions for each particular substrate condition and as specified.
(1) Prepare concrete surfaces to be stained. Remove dust, dirt, grease, oils, and release agents. Roughen as required to remove glaze. If hardeners or sealers have been used to improve curing, use mechanical methods of surface preparation.
(a) Use abrasive blast-cleaning methods if recommended by stain manufacturer.
(b) Determine moisture content of surfaces by performing appropriate tests. Do not stain surfaces if moisture content exceeds that permitted in manufacturer's written instructions.
3.2.3. Mixing
a. Mix and prepare stains according to manufacturer's written instructions. Stir stain thoroughly before applying and frequently during application to maintain color consistency.
(1) Maintain containers used in mixing and application in a clean condition, free of foreign materials and residue.
(2) Stir material before application to produce a mixture of uniform density. Stir as required during application. Do not stir surface film into material. If necessary, remove surface film and then strain material before using.
3.3 APPLICATION
3.3.1. Minimum Spreading Rate
a. Apply stain at manufacturer's recommended spreading rate to ensure proper penetration. Use applicators and techniques best suited for substrate and type of stain material being applied.
(1) Do not apply stain on surfaces that are not sufficiently dry. Ensure that each coat is dry before applying succeeding coat.
3.3.2. Apply Stain Evenly With Spray
a. Use airless or conventional air-atomizing high-pressure spraying equipment with orifice size as recommended by stain manufacturer. Ensure that an adequate amount of stain is applied to surface.
3.4 CLEANING
3.4.1. Cleanup
a. At the end of each workday, remove empty cans, rags, rubbish, and other discarded materials from Project site.
(1) After completing staining, clean window glass and other surfaces. Remove spattered stain by proper methods without scratching or damaging adjacent finished surfaces.
3.5 PROTECTION
3.5.1. General
a. Protect work of other trades, whether being stained or not, against damage from staining. Correct damage by cleaning, repairing or replacing, and restaining as approved by Contracting Officer.
b. Provide "Wet Paint" signs to protect newly stained finishes. After completing staining operations, remove temporary protective wrappings provided by others to protect their work.
(1) After work of other trades is complete, touch up and restore damaged or defaced stained surfaces.
3.6 EXTERIOR CONCRETE STAIN SCHEDULE
3.6.1. Exterior Concrete
a. Provide the following stain systems on exterior concrete:
(1) Acrylic Penetrating Pigmented Stain Finish: Three coats.
END OF SECTION
insert project name and location
June 2010
EXTERIOR CONCRETE STAINS
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