DRYVIT SYSTEMS CANADA MANUFACTURER'S SPECIFICATIONS SECTION AMERISTONE ARCHITECTURAL FINISH

Size: px
Start display at page:

Download "DRYVIT SYSTEMS CANADA MANUFACTURER'S SPECIFICATIONS SECTION AMERISTONE ARCHITECTURAL FINISH"

Transcription

1 AMERISTONE DRYVIT SYSTEMS CANADA MANUFACTURER'S SPECIFICATIONS SECTION AMERISTONE ARCHITECTURAL FINISH PART I - GENERAL 1.01 SUMMARY A. This document is intended to be used in preparing specifications for projects utilizing the Ameristone finish over Dryvit exterior insulation and finish systems (EIFS), concrete, stucco, masonry, interior drywall or plaster surfaces. For complete product description and usage refer to: 1. Ameristone Product Data Sheet, DSC Ameristone Application Instructions, DSC142 B. Related Sections 1. Unit Masonry Concrete or Sealants Exterior Insulation and Finish System REFERENCES A. Section Includes 1. ASTM B 117 (Federal Test Standard 141A Method 6061) Standard Practice for Operating Salt Spray (Fog) Apparatus 2. ASTM C 297 Standard Test Method for Flatwise Tensile Strength of Sandwich Constructions 3. ASTM D 522 Method B Standard Test Methods for Mandrel Bend Test of Attached Organic Coatings 4. ASTM D 968 (Federal Test Standard 141A Method 6191) Standard Test Methods for Abrasion Resistance of Coatings In 100% Relative Humidity 5. ASTM D 2247 (Federal Test Standard 141A Method 6201) Standard Practice for Testing Water Resistance of Coatings in 100% Relative Humidity 6. ASTM D 2244 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates 7. ASTM D 3273 Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber 8. ASTM D 4060 Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser 9. ASTM D 4214 Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films 10. ASTM D 4541 Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers 11. ASTM E 84 Standard Test Method for Surface Burning Characteristics of Building Materials 12. ASTM E 96 Standard Test Methods for Water Vapor Transmission of Materials 13. ASTM E 2134 Test Method for Evaluating the Tensile-Adhesion Performance of Exterior Insulation and Finish Systems (EIFS) 14. ASTM E 2485 (formerly EIMA Std ) Standard Test Method for Freeze-Thaw Resistance of Exterior Insulation and Finish Systems (EIFS) and Water-Resistive Barrier Coatings 15. ASTM G 154 Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials 16. ASTM G 155 (Federal Test Standard 141A Method 6151) Standard Practice for Operating-Xenon Arc Light Apparatus for Exposure of Nonmettalic Materials 1.03 DEFINITIONS A. Contractor: The contractor that installs the Ameristone finish. B. Dryvit: Dryvit Systems Canada the manufacturer of the Ameristone finish, a Canadian corporation. C. Substrate: The material to which the Ameristone finish is applied DESCRIPTION A. The Dryvit Ameristone finish is an architectural finish consisting of a blend of naturally colored quartz aggregates in a clear 100% acrylic binder. Ameristone is offered in ten custom design colors. B. Design Requirements: 1. Acceptable substrates for the Ameristone finish shall be: a. Dryvit EIF System b. Unglazed brick, stucco (cement plaster), concrete or masonry c. Interior gypsum wallboard or plaster 2. Deflection of the substrate systems shall not exceed 1/240 times the span. 3. The substrate shall be flat within 6.4 mm (1/4 in) in a 1.2 m (4 ft) radius.

2 2 4. The slope of inclined surfaces shall not be less than 6:12, and the length shall not exceed 305 mm (12 in). 5. Terminations a. The substrate with Ameristone finish shall be held back from adjoining materials around openings and penetrations such as windows, doors, and mechanical equipment a minimum of 19 mm (3/4 in) for sealant application. See Dryvit's System Installation Details for the appropriate system. b. Sealants 1) Shall be manufactured and supplied by others. 2) Shall be compatible with the substrate materials. Refer to current Dryvit Publication DSC153 for listing of sealants tested by sealant manufacturer for compatibility. 3) The sealant backer rod shall be closed cell. 6. Dark Colors The use of dark colors must be considered in relation to wall surface temperature as a function of local climatic conditions. Use of dark colors in high temperature climates can affect the performance of the system. 7. Flashing: Shall be provided at all roof-wall intersections, windows, doors, chimneys, decks, balconies and other areas as necessary to prevent water from entering behind the wall system. C. Performance Requirements 1. The Ameristone finish shall have been tested as follows: Ameristone Finish Testing Test Test Method Criteria Results Surface Burning Characteristics ASTM E 84 ICC and ANSI/EIMA 99-A-2001 Flame Spread <25 Smoke Developed <450 Passed Flexibility 1 ASTM D 522 Method B No ICC or ANSI/EIMA Criteria Passed: 3.5" 40 F Water Vapor ASTM E 96 Procedure B ICC: Vapor Permeable 45 Perms Transmission Accelerated Weathering ASTM G 154 Cycle 1 (QUV) No ANSI/EIMA Criteria ANSI.EIMA 99-A hours: No deleterious 5000 hours: No deleterious ASTM G 155 Cycle 1 (Xenon Arc) ICC: 2000 hours: No deleterious 2000 hours: No deleterious Chalk Rating ASTM D 4214 after ASTM G 154 Cycle 1 No ICC or ANSI/EIMA Criteria Chalk rating: 8 after 5000 hours QUV Instrumentally Measured Color Difference 3 ASTM D 2244 CIELAB, 10 Observer No ICC or ANSI/EIMA Criteria Color change: 5.0 Delta E after 5000 hours QUV (includes yellowing) after ASTM G 154 Cycle 1 Freeze-Thaw Resistance ASTM E 2485 (formerly ANSI/EIMA 99-A cycles: No deleterious EIMA ) 60 cycles: No deleterious Mildew Resistance ASTM D 3273 ANSI/EIMA 99-A days: No growth 28 days: No growth Salt Spray Resistance ASTM B 117 ICC and ANSI/EIMA 99-A hours: No deleterious 1000 hours: No deleterious Water Resistance ASTM D 2247 ICC and ANSI/EIMA 99-A days: No deleterious 14 days: No deleterious Abrasion Resistance ASTM D 968 Method A Falling Sand ANSI/EIMA 99-A liters (528 quarts): No deleterious 1000 liters (1057 quarts): No deleterious ASTM D 4060 Taber Abrasion (500 g load) No ICC or ANSI/EIMA Criteria 1000 cycles:.83 mg mass loss/rev Adhesion to Concrete ASTM D 4541 ICC and ANSI/EIMA 99-A-2001: >231 psi 15 psi minimum Tensile Bond ASTM C 297/E 2134 (formerly EIMA ) ICC and ANSI/EIMA 99-A-2001: 15 psi minimum >23 psi 1. Finish applied over aluminum panels, bent on cylindrical mandrels as described in ASTM D 522 Method B. Lower diameter indicates higher flexibility. 2. No cracking, checking, rusting, crazing, erosion, blistering, peeling, or delamination when viewed under 5x magnification. 3. Delta E is total color difference, including yellowing, lightening, darkening, changes in red, blue, and green color values. Finish exposed to 5,000 hours of QUV prior to evaluating Delta E SUBMITTALS A. Product Data: The contractor shall submit to the owner/architect the manufacturer's product data sheets describing products which will be used on this project. B. Samples: The contractor shall submit to the owner/architect two (2).61 m x 1.2 m (2 ft x 4 ft) samples of the proposed finish and color to be used on the project for approval. The same tools and techniques proposed for the actual installation shall be used.

3 QUALITY ASSURANCE A. Qualifications 1. Manufacturer: Shall be Dryvit Systems Canada. All materials shall be manufactured or sold by Dryvit and shall be purchased from Dryvit or its authorized distributor. a. Materials shall be manufactured at a facility covered by a current ISO 9001:2000 certification. Certification of the facility shall be done by a registrar accredited by the American National Standards Institute, Registrar Accreditation Board (ANSI-RAB). 2. Contractor: Shall be knowledgeable in the application of exterior and interior spray applied architectural coatings and shall have attended a special training session for Ameristone. B. Mock-up 1. The contractor shall, before the project commences, provide the owner/architect with a mock-up for approval. 2. The mock-up shall be of suitable size [minimum 2.4 mm x 2.4 mm (8 ft x 8 ft) as required to accurately represent the products being installed, as well as each color and texture to be utilized on the project. 3. The mock-up shall be prepared with the sale products, tools, equipment and techniques required for the actual application. The finish used shall be from the same batch that is being used on the project. 4. The approved mock-up shall be available and maintained at the jobsite DELIVERY, STORAGE AND HANDLING A. All Dryvit materials shall be delivered to the job site in the original, unopened packages with labels intact. 1. Upon arrival, materials shall be inspected for physical damage, freezing or overheating. Questionable materials shall not be used. B. Materials shall be stored at the jobsite in a cool, dry location, out of direct sunlight, protected from inclement weather and other sources of damage. Minimum storage temperature shall be as follows: 1. Ameristone: 10 C (50 F). 2. Color Prime: 4 C (40 F) 3. Maximum storage temperature shall be 38 C (100 F). NOTE: Minimize exposure of materials to temperatures over 32 C (90 F). Finishes exposed to temperatures over 43 C (110 F) for even short periods may exhibit skinning, increased viscosity and should be inspected prior to use. C. Materials should be ordered from a single batch unless it is not possible due to the size of the project. The contractor should utilize the smallest number of batches possible to avoid color variations. D. Protect all products from inclement weather and direct sunlight PROJECT CONDITIONS A. Environmental Requirements 1. Application of wet materials shall not take place during inclement weather unless appropriate protection is provided. Protect materials from inclement weather until they are completely dry. 2. At the time of application, the minimum air and wall surface temperatures shall be as follows: a. Ameristone: 10 C (50 F). b. Color Prime: 4 C (40 F) 3. These temperatures shall be maintained with adequate air ventilation and circulation for a minimum of 24 hours (48 hours for Ameristone) thereafter, or until the products are completely dry. B. Existing Conditions: The contractor shall have access to electric power, clean water and a clean work area at the location where the Dryvit materials are to be applied SEQUENCING AND SCHEDULING A. Application shall be coordinated with other construction trades. B. Sufficient labor and equipment shall be employed to ensure a continuous operation, free of cold joints, texture variations, scaffold lines, etc WARRANTY A. Dryvit shall offer a written Limited Materials Warranty upon receipt of a properly executed warranty request and completed project form. Contact Dryvit Warranty Services Department for full details. B. The contractor shall warrant workmanship separately DESIGN RESPONSIBILITY A. It is the responsibility of both the specifier and purchaser to determine if a product is suitable for its intended use. Dryvit has prepared guidelines in the form of specifications and product sheets to facilitate the design process only. Dryvit Systems Canada is not liable for any errors or omissions in design, detail, structural capability, attachment details, shop drawings, etc. or for any changes which specifiers or their appointed representatives may make to Dryvit s published comments MAINTENANCE A. All Dryvit products are designed to minimize maintenance. However, as with all building products, depending on location, some cleaning may be required. See Dryvit Publication DSC152 on Cleaning and Recoating. B. Sealants and Flashings shall be inspected on a regular basis and repairs made as necessary.

4 PART II - PRODUCTS GENERAL A. All products shall be supplied by or obtained from Dryvit or its authorized distributors. Substitutions or addition of materials other than specified will void the warranty MATERIALS A. Water: Shall be clean and free of foreign matter COMPONENTS A. Ameristone Finish: An architectural finish consisting of a blend of naturally colored quartz aggregates and a clear 100% acrylic binder. B. Color Prime: A pigmented, exterior/interior acrylic emulsion primer EQUIPMENT A. Tools associated with the plastering and painting trades. B. Spray equipment appropriate for aggregate finishes (see Ameristone Application Instructions, DSC142). PART III - EXECUTION 3.01 EXAMINATION A. Prior to application of the Ameristone finish, the contractor shall verify that the substrate: 1. Is a type listed in Section 1.04.B Is flat within 6.4 mm (1/4 in) in a 1.2 m (4 ft) radius. 3. Is sound, dry (as ascertained by a moisture meter), connections are tight; has no surface voids, projections, or other conditions that may interfere with the application or performance of the Dryvit Ameristone finish. B. Prior to application of the Ameristone finish the architect or general contractor shall insure that all needed flashings and other waterproofing details have been completed, if such completion is required prior to the Ameristone application. Additionally, the contractor shall ensure that: 1. Metal roof flashing has been installed in accordance with Asphalt Roofing Manufacturers Association (ARMA) Standards. 2. Openings are flashed to prevent water penetration. 3. Chimneys, Balconies and Decks have been properly flashed. 4. Windows, Doors, etc. are installed and flashed per manufacturer's requirements. C. Prior to the application of the Ameristone finish, the contractor shall notify the general contractor and/or architect and/or owner of all discrepancies. D. Ensure that minimum application temperatures are met per Section 1.08.A PREPARATION A. Exterior Insulation and Finish Systems (EIFS) 1. Ensure that the reinforced base coat is fully dried and free of trowel marks or other imperfections, which may affect the application of a spray finish. B. Stucco, masonry, concrete 1. Stucco and concrete walls shall have cured per manufacturer s instructions prior to application of Color Prime and Ameristone finish. 2. Walls shall be cleaned to remove all dirt, dust, efflorescence or any other matter, which may interfere with the bond of a surface coating. 3. Rough surfaces shall be skimmed with Dryvit Genesis, Genesis DM, Genesis DMS, Primus or Primus DM mixtures to provide a smooth, flat, and level base. Refer to specific product data sheet for mixing and application. C. Interior Surfaces 1. Drywall joints shall be taped and fasteners spotted with drywall joint compound to provide a smooth base. 2. Interior plaster shall be finished smooth. 3. Interior masonry or concrete shall be cleaned to remove all dirt, dust, efflorescence or any other foreign matter which may interfere with application and/or bond of a surface coating. Rough surfaces shall be skimmed with Dryvit Genesis, Genesis DM, Genesis DMS, Primus, or Primus DM mixtures to provide a smooth, flat and level base in accordance with published systems application instructions APPLICATION A. Color Prime Application 1. The specified color coordinated Color Prime (refer to DSC434) shall be applied to the surface prior to Ameristone application. 2. Mix with a "Twister" paddle or equivalent mixing blade, powered by a 12.7 mm (1/2 in) drill, at rpm, to a homogeneous consistency. 3. Apply using a brush, paint roller or airless spray equipment. 4. Allow to dry (minimum 4 hours) prior to Ameristone application.

5 B. Ameristone Finish Application 1. Contractor must refer to printed Ameristone Application Instructions, DSC142, for more complete information. 2. Mix Ameristone for approximately 1 minute to ensure uniformity using a "Twister" paddle or equivalent mixing blade powered by a 12.7 mm (1/2 in) drill at rpm, just prior to application. DO NOT OVERMIX. 3. Mix all pails the same amount of time. 4. If clean potable water is added as described in DSC142 for various application techniques, the same amount must be added to each pail 5. Finish shall be spray applied in two coats, applied perpendicular to each other. 6. Allow the Ameristone to dry a minimum of 48 hours under average drying conditions [21 C (70 F), 50% RH]. Cool damp conditions may require longer drying time. 7. Do not apply Ameristone on surfaces, which will receive sealant. Those surfaces shall be coated with color coordinated Color Prime. 8. Avoid mixing batches. Ameristone contains naturally colored aggregates and slight color variations may occur. Order in single batches when possible and avoid using different batches in the same location FIELD QUALITY CONTROL A. The contractor shall be responsible for the proper application of the Ameristone finish. B. Dryvit assumes no responsibility for on-site inspections or application of its products. C. Dryvit Systems Canada and/or its distributors will provide field service support with sufficient notice from the applicator. The designer, general contractor or their appointed representative should make periodic on-site inspections to ensure that the Dryvit materials are being installed in strict accordance with Dryvit's specifications. D. If requested, the applicator shall certify in writing the quality of work performed relative to the substrate system, details, installation procedures and workmanship is in accordance with project specifications and manufacturer's instructions CLEANING A. All excess materials shall be removed from the job site by the contractor in accordance with contract provisions and as required by applicable law. B. All surrounding areas, where the Ameristone finish has been applied, shall be left free of debris and foreign substances resulting from the contractor's work PROTECTION A. Adjacent areas and materials shall be protected from damage, drops and spills. B. The Ameristone materials shall be protected by permanent or temporary means from weather and other damage, prior to, during and immediately after application. Care must be taken to provide adequate ventilation to prevent condensation and/or heat build up when using tarp or plastic as protection. Disclaimer Information contained in this specification conforms to standard detail and product recommendations for the installation of Ameristone products as of the date of publication of this document and is presented in good faith. Dryvit Systems Canada assumes no liability, expressed or implied, as to the architecture, engineering or workmanship of any project. To insure that you are using the latest, most complete information, contact Dryvit Systems Canada at: 129 Ringwood Drive Stouffville, Ontario Canada L4A 8A2 (800) Dryvit Systems Canada 129 Ringwood Drive Stouffville, Ontario Canada L4A 8A2 (800) Printed in Canada R6: Dryvit Systems Canada 1997