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- SECTION 09940
-
- DECORATIVE COATINGS
-
- NOTE ** Sto Finish Systems exterior and interior decorative
- coatings.
- NOTE **
- NOTE ** This section is based on products manufactured by
- Sto Finish Systems Division of Sto Corporation,
- which is located at the following address:
- NOTE ** P.O. Box 44609
- NOTE ** Atlanta GA 30336-5609
- NOTE ** Tel: (800) 221-2397
- NOTE ** Tel: (404) 346-3666
- NOTE ** Fax: (404) 346-3119
- NOTE **
- NOTE ** Sto Finish Systems Division offers a complete line
- of decorative coating products for exterior and
- interior surfaces.
- NOTE **
- NOTE ** SECTION 09940 - DECORATIVE COATINGS, Copyright
- 1997, The Architect's Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Enter a description of the surfaces to be finished
- with the coatings specified in this section. If
- more than one exterior or interior coating is
- specified, edit the following list to indicate
- where each type of coating is to be applied.
-
- A. Coating to be applied to the following exterior surfaces:
- 1. ___________________.
- 2. ___________________.
- 3. ___________________.
- 4. ___________________.
-
- B. Coating to be applied to the following interior surfaces:
- 1. ___________________.
- 2. ___________________.
- 3. ___________________.
- 4. ___________________.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete any sections below not relevant to this
- project; add others as required.
-
- A. Section 03300 - Cast-In-Place Concrete.
-
- B. Section 04810 - Unit Masonry Assemblies.
-
- C. Section 07620 - Sheet Metal Flashing and Trim.
-
- D. Section 07900 - Joint Sealers.
-
- E. Section 09210 - Gypsum Plaster.
-
- F. Section 09215 - Gypsum Veneer Plaster.
-
- G. Section 09210 - Portland Cement Plaster.
-
- H. Section 09260 - Gypsum Board Assemblies.
-
- 1.3 REFERENCES
- NOTE ** Delete references from the list below that are not
- actually required by the text of the edited
- section.
-
- A. ASTM B 117 - Standard Practice for Operating Salt Spray
- (Fog) Testing Apparatus.
-
- B. ASTM C 67 - Standard Test Methods of Sampling and Testing
- Brick and Structural Clay Tile.
-
- C. ASTM C 150 - Standard Specification for Portland Cement.
-
- D. ASTM C 297 - Standard Test Method for Tensile Strength of
- Flat Sandwich Constructions in Flatwise Plane.
-
- E. ASTM D 412 - Standard Test Methods for Vulcanized Rubber
- and Thermoplastic Rubbers and Thermoplastic Elastomers-
- Tension.
-
- F. ASTM D 522 - Standard Test Methods for Mandrel Bend Test
- of Attached Organic Coatings.
-
- G. ASTM D 968 - Standard Test Methods for Abrasion
- Resistance of Organic Coatings by Falling Abrasive.
-
- H. ASTM D 1653 - Standard Test Methods for Water Vapor
- Transmission of Organic Coating Films.
-
- I. ASTM D 2240 - Standard Test Method for Rubber Property --
- Durometer Hardness.
-
- J. ASTM D 2247 - Standard Practice for Testing Water
- Resistance of Coatings in 100% Relative Humidity.
-
- K. ASTM D 2794 - Standard Test Method for Resistance of
- Organic Coatings to the Effects of Rapid Deformation
- (Impact).
-
- L. ASTM D 2805 - Standard Test Method for Hiding Power of
- Paints by Reflectometry.
-
- M. ASTM D 3273 - Standard Test Method for Resistance to
- Growth of Mold on the Surface of Interior Coatings in an
- Environmental Chamber.
-
- N. ASTM D 3274 - Standard Test Method for Evaluating Degree
- of Surface Disfigurement of Paint Films by Microbial
- (Fungal or Algal) Growth or Soil and Dirt Accumulation.
-
- O. ASTM D 4060 - Standard Test Method for Abrasion
- Resistance of Organic Coatings by the Taber Abraser.
-
- P. ASTM D 4214 - Standard Test Methods for Evaluating the
- Degree of Chalking of Exterior Paint Films.
-
- Q. ASTM D 4258 - Standard Procedure for Surface Cleaning of
- Concrete for Coating.
-
- R. ASTM D 4261 - Standard Procedure for Surface Cleaning of
- Concrete Unit Masonry for Coating.
-
- S. ASTM D 4541 - Standard Test Method for Pull-Off Strength
- of Coatings Using Portable Adhesion-Testers.
-
- T. ASTM E 84 - Standard Test Method for Surface Burning
- Characteristics of Building Materials.
-
- U. ASTM E 96 - Standard Test Methods for Water Vapor
- Transmission of Materials.
-
- V. ASTM E 119 - Standard Test Methods for Fire Tests of
- Building Construction and Materials.
-
- W. ASTM E 313 - Standard Test Method of Indexes of Whiteness
- and Yellowness of Near-White Opaque Materials.
-
- X. ASTM G 21 - Standard Practice for Determining Resistance
- of Synthetic Polymeric Materials to Fungi.
-
- Y. ASTM G 53 - Standard Practice for Operating Light- and
- Water-Exposure Apparatus (Fluorescent UV-Condensation
- Type) for Exposure of Nonmetallic Materials.
-
- Z. DIN 52617 - The Determination of Water Absorption
- Coefficient of Building Materials; Deutsche Industrie
- Norm.
-
- AA. EIMA 101.01 - Standard Test Method for Freeze-Thaw
- Resistance of Exterior Insulation and Finish Systems
- (EIFS) (modified ASTM C 67); EIFS Industry Members
- Association (EIMA).
-
- BB. FS TT-C-555B - Coating, Textured (For Interior and
- Exterior Masonry Surfaces).
-
- 1.4 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's descriptive literature and
- specifications for specified decorative coatings,
- demonstrating compliance of products with specified
- requirements.
- NOTE ** Delete the following paragraph if specifying custom
- colors or finishes.
-
- C. Selection Samples: For each coating type specified, two
- sets of color chips representing manufacturer's full
- range of available colors and finishes.
-
- D. Verification Samples: For each color and finish
- selected, two samples, minimum size 8 inches (200 mm)
- square, representing actual color and finish of products
- to be installed.
-
- E. Manufacturer's Qualifications.
-
- F. Specimen of manufacturer's warranty.
-
- G. Installer's Qualifications: Include list of previous
- projects which identifies the following for each
- project:
- 1. Project location and date of completion.
- 2. Architect's name, address, and telephone number.
- 3. Owner's name, address, and telephone number.
-
- H. Manufacturer's printed installation instructions for each
- specified product, including product storage requirements
- and recommendations for specific project conditions.
-
- I. Operation and Maintenance Data: Manufacturer's printed
- instructions and recommendations for maintaining and
- cleaning of coatings.
-
- 1.5 QUALITY ASSURANCE
-
- A. Manufacturer Qualifications: Minimum fifteen years
- documented experience as single-source producer of
- products specified in this section, and current member in
- good standing of Sealant Waterproofing and Restoration
- Institute (SWRI).
-
- B. Installer Qualifications: Minimum three years documented
- experience installing finishes specified in this section,
- capable of demonstrating successful completion of a
- minimum of three previous projects of similar size and
- complexity, and employing applicators having minimum
- three years experience applying products specified in
- this section.
-
- C. Mock-Up: Construct mock-up for each specified coating
- color and texture, using materials specified in this
- section.
- NOTE ** Retain one of the following two sub-paragraphs.
- 1. Construct mock-up as directed, at location indicated
- or directed.
- 2. Construct each mock-up at location indicated or
- directed, size __ feet (__ m) by __ feet (__ mm).
- 3. Obtain Architect's acceptance of mock-up before
- beginning construction activities of this section;
- accepted mock-up will be standard by which completed
- construction activities of this section is judged.
- NOTE ** Retain one of the following two sub-paragraphs.
- 4. Mock-up may not remain as part of Work.
- 5. Accepted mock-up may remain as part of Work.
- NOTE ** Delete the following paragraph if not required.
-
- D. Pre-Installation Meeting:
- 1. Convene at job site seven calendar days prior to
- scheduled beginning of construction activities of
- this section to review requirements of this section.
- 2. Require attendance by representatives of the
- following:
- a. Installer of this section.
- b. Other entities directly affecting, or affected
- by, construction activities of this section.
- 3. Notify Architect four calendar days in advance of
- scheduled meeting date.
-
- 1.6 DELIVERY, STORAGE, AND HANDLING
-
- A. Store products of this section in manufacturer's unopened
- packaging until installation.
-
- B. Maintain storage area conditions for products of this
- section in accordance with manufacturer's instructions
- until installation.
-
- 1.7 PROJECT CONDITIONS
- NOTE ** Retain paragraphs that apply to project.
-
- A. Do not apply coating materials to exterior surfaces until
- ambient temperature, and surface temperature of surfaces
- to receive coating materials, is above 40 degrees F (4
- degrees C) and is expected to remain so for 24 hours
- after application of finish coating.
-
- B. Do not apply coating materials to interior surfaces until
- structure is weathertight and maintains ambient
- temperature, and surface temperature of surfaces to
- receive coating materials, above 40 degrees F (4 degrees
- C).
-
- 1.8 SEQUENCING
- NOTE ** Delete any of the following paragraphs that do not
- apply to project.
-
- A. Sequence construction activities of this section with
- construction activities of other sections to prevent
- penetration of substrates after application of finish
- coatings, and to prevent damage to finish coatings by
- subsequent construction activities.
-
- B. Ensure that sheet metal flashings and trim adjacent to
- coating applications are installed immediately after
- finish coating has dried.
-
- C. Ensure that joint sealers adjacent to coating
- applications are installed immediately after finish
- coating has dried.
-
- 1.9 WARRANTY
-
- A. Manufacturer's Warranty: Manufacturer's standard
- warranty against defects in materials.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Manufacturer: Sto Finish Systems Division of Sto
- Corporation; P.O. Box 44609, Atlanta GA 30336-5609; ASD.
- Tel: (800) 221-2397 or (404) 346-3666, Fax: (404) 346-
- 3119.
- NOTE ** Delete one of the two following paragraphs;
- coordinate with Division 1 requirements.
-
- B. Requests for substitution will be considered in
- accordance with provisions of Section 01600.
-
- C. Substitutions: Not permitted.
-
- D. Unless otherwise specified for an individual product or
- material, supply all products specified in this section
- from the same manufacturer.
-
- 2.2 MATERIALS
- NOTE ** Delete coating materials not required. If more
- than one exterior or interior coating is required,
- it may be useful to give each a Type designation,
- for ease of identifying the location of each.
- NOTE **
- NOTE ** Below is a summary of the coatings in this section,
- with some characteristics that may be applicable to
- selection:
- NOTE **
- NOTE ** Coating Type Texture Aggregate
- NOTE **
- NOTE ** StoSilco Shield ________ Smooth none
- Exterior
- NOTE ** StoSilco Lastic ________ Smooth none
- Exterior
- NOTE ** StoSilco LIT ________ Textured Marble
- Exterior
- NOTE ** StoSilco FlexFinish ________ Textured Marble
- Exterior
- NOTE ** Stolit Acrylic ________ Marble
- Exterior
- NOTE ** FlexFinish Acrylic ________ none
- Exterior
- NOTE ** Decocoat Acrylic Textured none
- Interior
-
- A. Smooth Exterior Coating: StoSilco(R) Shield; silicone-
- enhanced coating.
- 1. Minimum solids content: 55 percent by weight; 37
- percent by volume.
- 2. Surface burning, when tested in accordance with ASTM
- E 84: Flame spread 0; smoke developed 5.
- 3. Flexibility, when tested in accordance with ASTM D
- 522: Pass 1/2-inch (13 mm) mandrel bend test at 20
- degrees F (-7 degrees C), 50 degrees F (10 degrees
- C), and at 77 degrees F (25 degrees C).
- NOTE ** The following test is based on a scale of 0-100,
- with 100 being optimum rating.
- 4. Hiding power, when tested in accordance with ASTM D
- 2805: 99.6 contrast ratio.
- 5. Water vapor transmission, when tested in accordance
- with modified ASTM E 96: 56 perms (3203 ng/Pa s sq
- m) for 6-mil (0.15 mm) dry film thickness at 28 days.
- 6. Accelerated weathering resistance, when tested in
- accordance with ASTM G 53: No deterioration,
- cracking or noticeable yellowing after 5000 hours.
- NOTE ** The following test is based on a scale of 1-10,
- with 10 being optimum rating.
- 7. Chalking, when tested in accordance with ASTM D 4214:
- 9 rating after 5000 hours.
- NOTE ** The following test is based on a scale in which 0
- indicates no yellowing, and 2 indicates barely
- discernible yellowing.
- 8. Yellowing index, when tested in accordance with ASTM
- E 313: 0.41 rating after 5000 hours.
- 9. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No delamination or deterioration
- after 25 cycles.
- 10. Mildew resistance, when tested in accordance with
- ASTM D 3274: No mildew growth after 60 days.
- 11. Salt spray resistance, when tested in accordance with
- ASTM B 117: No deleterious effects after 500 hours.
- 12. Water penetration, when tested in accordance with FS
- TT-C-555B: No water penetration after 24 hours of
- driving rain.
- 13. Abrasion resistance, when tested in accordance with
- ASTM D 4060, with Taber CS-10 wheel: 0.0196 ounce
- (0.56 g) weight loss at wear through.
- 14. Adhesion to concrete, when tested in accordance with
- ASTM D 4541: 300 pounds per square inch (2068 kPa)
- after 28 days.
- 15. Tensile strength, when tested in accordance with ASTM
- D 412: 50 pounds per square inch (345 kPa) after 28
- days.
- NOTE ** Delete all but one of following three sub-
- paragraphs. Coordinate selection method with
- requirements for samples.
- 16. Color: Selected from full range of manufacturer's
- standard colors.
- 17. Color: _________________.
- 18. Colors: Specified in SCHEDULES Article of this
- section.
-
- B. Smooth Exterior Coating: StoSilco(R) Lastic Coating;
- silicone-enhanced elastomeric coating.
- 1. Minimum solids content: 63 percent by weight; 50
- percent by volume.
- 2. Dry-to-touch time: 40-51 minutes at 90 degrees F (32
- degrees C), 60-90 minutes at 75 degrees F (24 degrees
- C), 8-12 hours at 40 degrees F (4.4 degrees C),
- 3. Surface burning, when tested in accordance with ASTM
- E 84: Flame spread 5; smoke developed 5.
- 4. Elongation, when tested in accordance with ASTM D
- 412: Minimum 540 percent.
- 5. Flexibility, when tested in accordance with ASTM D
- 522: Pass 180-degree 1/8-inch (3 mm) mandrel bend
- test at -30 degrees F (-34 degrees C).
- 6. Water absorption, when tested in accordance with DIN
- 52617: 0.177 ounces per square foot per 24-hour
- period (0.0254 kg/sq m/24-hr).
- 7. Water vapor transmission, when tested in accordance
- with ASTM E 96 (modified ASTM D 1653): 14 perms (800
- ng/Pa s sq m) for 15-mil (0.38 mm) dry film thickness
- at 28 days.
- 8. Accelerated weathering resistance, when tested in
- accordance with ASTM G 53: No deterioration,
- cracking or noticeable yellowing after 2000 hours.
- NOTE ** The following test is based on a scale of 1-10,
- with 10 being optimum rating.
- 9. Chalking, when tested in accordance with ASTM D 4214:
- 9 rating after 2000 hours.
- NOTE ** The following test is based on a scale in which 0
- indicates no yellowing, and 2 indicates barely
- discernible yellowing.
- 10. Yellowing index, when tested in accordance with ASTM
- E 313: 1.1 rating after 2000 hours.
- 11. Dirt pick-up resistance, when tested in accordance
- with ASTM D 3274: 97 percent reflectance retained
- after 1 hour.
- 12. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No cracking, delamination or
- deterioration after 25 cycles.
- 13. Mildew resistance, when tested in accordance with
- ASTM G 53: No mildew growth after 21 days.
- 14. Salt spray resistance, when tested in accordance with
- ASTM B 117: No deleterious effects after 300 hours.
- 15. Water penetration, when tested in accordance with FS
- TT-C-555B: No water penetration after 24 hours of
- driving rain.
- 16. Adhesion to concrete, when tested in accordance with
- ASTM D 4541: 135 pounds per square inch (931 kPa)
- after 28 days.
- 17. Durometer Shore A hardness, when tested in accordance
- with ASTM D 2240: 35-40 at 28 days.
- 18. Tensile strength, when tested in accordance with ASTM
- D 412: 120 pounds per square inch (827 kPa) after 28
- days.
- NOTE ** Delete all but one of following three sub-
- paragraphs. Coordinate selection method with
- requirements for samples.
- 19. Color: Selected from full range of manufacturer's
- standard colors.
- 20. Color: _________________.
- 21. Colors: Specified in SCHEDULES Article of this
- section.
-
- C. Textured Exterior Coating: StoSilco(R) LIT Textured
- Coating; silicone-enhanced, with marble aggregate finish.
- 1. Surface burning, when tested in accordance with ASTM
- E 84: Flame spread 0; smoke developed 15.
- 2. Flexibility, when tested in accordance with ASTM D
- 522: Pass 4-inch (100 mm) mandrel bend test.
- 3. Water absorption, when tested in accordance with DIN
- 52617: 0.016 ounces per square foot per hour (0.005
- kg/sq m/hr).
- 4. Water vapor transmission, when tested in accordance
- with modified ASTM E 96: 42 perms (2402 ng/Pa s sq
- m) at 28 days.
- 5. Accelerated weathering resistance, when tested in
- accordance with ASTM G 53: No deterioration,
- cracking or noticeable yellowing at 10-power
- magnification after 5000 hours.
- NOTE ** The following test is based on a scale of 1-10,
- with 10 being optimum rating.
- 6. Chalking, when tested in accordance with ASTM D 4214:
- 9 rating after 2000 hours, 8 rating after 5000 hours.
- NOTE ** The following test is based on a scale in which 0
- indicates no yellowing, and 2 indicates barely
- discernible yellowing.
- 7. Yellowing index, when tested in accordance with ASTM
- E 313: 0.77 rating after 5000 hours.
- 8. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No delamination or deterioration
- after 90 cycles.
- 9. Mildew resistance, when tested in accordance with
- ASTM D 3273: No mildew growth after 60 days.
- 10. Salt spray resistance, when tested in accordance with
- ASTM B 117: No deleterious effects after 700 hours.
- 11. Water penetration, when tested in accordance with FS
- TT-C-555B: No water penetration after 24 hours of
- driving rain.
- 12. Water resistance, when tested in accordance with ASTM
- D 2247: No deleterious effects after 42 days.
- 13. Abrasion resistance, when tested in accordance with
- ASTM D 968: No cracking, checking, or loss of film
- integrity at 1057 quarts (1000 l) sand.
- 14. Adhesion to concrete, when tested in accordance with
- ASTM D 4541: 120 pounds per square inch (827 kPa)
- after 28 days.
- NOTE ** Delete all but one of following three sub-
- paragraphs. Coordinate selection method with
- requirements for samples.
- 15. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 16. Color _________________; ______________ texture.
- 17. Colors and textures: Specified in SCHEDULES Article
- of this section.
-
- D. Textured Exterior Coating: StoSilco(R) FlexFinish
- Elastomeric Textured Coating; silicone-enhanced, with
- marble aggregate finish.
- 1. Surface burning, when tested in accordance with ASTM
- E 84: Flame spread 5; smoke developed 5.
- 2. Elongation, when tested in accordance with ASTM D
- 412: Minimum 500 percent at 28 days.
- 3. Flexibility, when tested in accordance with ASTM D
- 522: Pass 1/2-inch (13 mm) and 1/8-inch (3 mm)
- mandrel bend tests at -30 degrees F (-34 degrees C).
- 4. Water absorption, when tested in accordance with DIN
- 52617: 0.27 ounces per square foot per hour (0.830
- kg/sq m/hr).
- 5. Water vapor permeability, when tested in accordance
- with ASTM D 1653: 16 perms (915 ng/Pa s sq m) at 28
- days.
- 6. Accelerated weathering resistance, when tested in
- accordance with ASTM G 53: No deterioration,
- cracking or noticeable yellowing after 2000 hours.
- NOTE ** The following test is based on a scale of 1-10,
- with 10 being optimum rating.
- 7. Chalking, when tested in accordance with ASTM D 4214:
- 9 rating after 2000 hours.
- NOTE ** The following test is based on a scale in which 0
- indicates no yellowing, and 2 indicates barely
- discernible yellowing.
- 8. Yellowing index, when tested in accordance with ASTM
- E 313: 0.26 rating after 2000 hours.
- 9. Dirt pick-up resistance, when tested in accordance
- with ASTM D 3274: 96 percent reflectance retained
- after 1 hour.
- 10. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No deleterious effects after 25
- cycles.
- 11. Mildew resistance, when tested in accordance with
- ASTM G 21: No mildew growth after 21 days.
- 12. Water penetration, when tested in accordance with FS
- TT-C-555B: No water penetration after 24 hours of
- driving rain.
- 13. Adhesion to concrete, when tested in accordance with
- ASTM D 4541: 115 pounds per square inch (793 kPa)
- after 28 days.
- 14. Tensile strength, when tested in accordance with ASTM
- D 412: 55 pounds per square inch (379 kPa) after 28
- days.
- NOTE ** Delete all but one of following three sub-
- paragraphs. Coordinate selection method with
- requirements for samples.
- 15. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 16. Color _________________; ______________ texture.
- 17. Colors and textures: Specified in SCHEDULES Article
- of this section.
-
- E. Textured Exterior Coating: Stolit; acrylic coating with
- marble aggregate texture.
- 1. Surface burning, when tested in accordance with ASTM
- E 84: Flame spread 5; smoke developed 5.
- 2. Fire resistance rating effect on existing wall
- assembly, when tested in accordance with ASTM E 119:
- No change.
- 3. Flexibility, when tested in accordance with ASTM D
- 522: Pass 4-inch (100 mm) mandrel bend test.
- 4. Water absorption, when tested in accordance with DIN
- 52617: 0.162 ounces per square foot per hour (0.049
- kg/sq m/hr).
- 5. Water vapor transmission, when tested in accordance
- with ASTM E 96 (modified ASTM D 1653): 37 perms
- (2116 ng/Pa s sq m).
- 6. Accelerated weathering resistance, when tested in
- accordance with ASTM G 53: No deleterious effects at
- 10-power magnification after 5000 hours.
- NOTE ** The following test is based on a scale of 1-10,
- with 10 being optimum rating.
- 7. Chalking, when tested in accordance with ASTM D 4214:
- 9 rating after 2000 hours, 8 rating after 5000 hours.
- NOTE ** The following test is based on a scale in which 0
- indicates no yellowing, and 2 indicates barely
- discernible yellowing.
- 8. Yellowing index, when tested in accordance with ASTM
- E 313: 1.5 rating after 5000 hours.
- 9. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No cracking, delamination or
- deterioration after 90 cycles.
- 10. Mildew resistance, when tested in accordance with
- ASTM D 3273: No mildew growth after 42 days.
- 11. Salt spray resistance, when tested in accordance with
- ASTM B 117: No deleterious effects after 500 hours.
- 12. Water penetration, when tested in accordance with FS
- TT-C-555B: No water penetration after 24 hours of
- driving rain.
- 13. Water resistance, when tested in accordance with ASTM
- D 2247: No deleterious effects after 28 days.
- 14. Abrasion resistance, when tested in accordance with
- ASTM D 968: No cracking, checking, or loss of film
- integrity at 1057 quarts (1000 l) sand.
- 15. Adhesion to concrete, when tested in accordance with
- ASTM D 4541: 90 pounds per square inch (620 kPa)
- after 28 days.
- NOTE ** Delete all but one of following three sub-
- paragraphs. Coordinate selection method with
- requirements for samples.
- 16. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 17. Color _________________; ______________ texture.
- 18. Colors and textures: Specified in SCHEDULES Article
- of this section.
- NOTE ** Retain the following paragraph if specifying
- FlexFinish Coating.
-
- F. Textured Exterior Coating: Sto FlexFinish; acrylic
- elastomeric coating with marble aggregate texture.
- 1. Surface burning, when tested in accordance with ASTM
- E 84: Flame spread 15; smoke developed 5.
- 2. Elongation, when tested in accordance with ASTM D
- 412: Minimum 200 percent for neat film.
- 3. Flexibility, when tested in accordance with ASTM D
- 522: Pass 1/2-inch (13 mm) mandrel bend test at -30
- degrees F (-34 degrees C), 26 degrees F (-3.3 degrees
- C), 32 degrees F (0 degrees C), and at 86 degrees F
- (30 degrees C).
- 4. Water absorption, when tested in accordance with DIN
- 52617: 0.375 ounces per square foot per hour (0.113
- kg/sq m/hr).
- 5. Water vapor permeability, when tested in accordance
- with ASTM D 1653: 12 perms (686 ng/Pa s sq m).
- 6. Dirt pick-up resistance, when tested in accordance
- with ASTM D 3274: 89 percent reflectance retained
- after 1 hour.
- 7. Water penetration, when tested in accordance with FS
- TT-C-555B: No water penetration after 24 hours of
- driving rain.
- 8. Adhesion to concrete, when tested in accordance with
- ASTM D 4541: 95 pounds per square inch (655 kPa)
- after 28 days.
- 9. Tensile strength, when tested in accordance with ASTM
- D 412: 60 pounds per square inch (414 kPa) after 28
- days.
- NOTE ** Delete all but one of following three sub-
- paragraphs. Coordinate selection method with
- requirements for samples.
- 10. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 11. Color _________________; ______________ texture.
- 12. Colors and textures: Specified in SCHEDULES Article
- of this section.
- NOTE ** Retain the following paragraph if specifying
- Decocoat Coating.
-
- G. Textured Interior Coating: Sto Decocoat; acrylic
- coating.
- 1. Surface burning, when tested in accordance with ASTM
- E 84: Flame spread 0; smoke developed 5.
- 2. Flexibility, when tested in accordance with ASTM D
- 522: Pass 1/8-inch (3 mm) mandrel bend test.
- 3. Water absorption, when tested in accordance with DIN
- 52617: 0.375 ounces per square foot per hour (0.113
- kg/sq m/hr).
- 4. Water vapor permeability, when tested in accordance
- with ASTM D 1653: 28 perms (1601 ng/Pa s sq m).
- 5. Volatile organic content (VOC): 3.85 ounces per
- quart (100 gm/l).
- 6. Mildew resistance, when tested in accordance with
- ASTM G 21: No mildew growth after 14 days.
- 7. Abrasion resistance, when tested in accordance with
- Ebner Abrasion Test: 1.50 percent weight loss.
- 8. Adhesion, when tested in accordance with ASTM D 4541,
- after 28 days: 15 pounds per square inch (103 kPa)
- to gypsum board prior to substrate failure, 125
- pounds per square inch (862 kPa) to concrete, and 100
- pounds per square inch (689 kPa) to primed metal.
- 9. Impact resistance, when tested in accordance with
- ASTM D 2794: No failure up to 70 inch-pounds
- (886,200 N m) at 28 days.
- 10. Tensile strength, when tested in accordance with ASTM
- D 412: 25 pounds per square inch (207 kPa) after 28
- days.
- NOTE ** Delete all but one of following three sub-
- paragraphs. Coordinate selection method with
- requirements for samples.
- 11. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 12. Color _________________; ______________ texture.
- 13. Colors and textures: Specified in SCHEDULES Article
- of this section.
-
- H. Surface Preparation Materials: Manufacturer's
- proprietary materials indicated, specified in
- manufacturer's instructions, or recommended by
- manufacturer for correct application of coating
- materials, including the following:
- 1. Surface conditioner: Acrylic-based surface sealer
- and hardener for chalking substrates or highly-
- absorptive substrates.
- 2. Primers: Silicone-enhanced or acrylic-based.
- 3. Crack repair material: Fiber-reinforced acrylic-
- based material formulated for mixing with Portland
- cement; used with specified fiber reinforcement
- material for repair of substrate cracks up to 1/8
- inch (3 mm) wide.
- 4. Filler material: Acrylic-based flat filler.
- 5. Patching and leveling material for applications up to
- 1/16 inch (1.5 mm) thick: Single-component, polymer-
- modified, cement-based material containing fiber
- reinforcement.
- 6. Patching and leveling material for applications up to
- 1/4 inch (6 mm) thick: Single-component, polymer-
- modified, cement-based material containing fiber
- reinforcement; used with or without specified fiber
- reinforcement material.
-
- I. Reinforcing Mesh: Symmetrical, interlaced, open-weave
- glass-fiber reinforcing fabric mesh, nominal weight 4.8
- ounces per square yard (163 g/sq m), with minimum 25
- percent by weight alkaline-resistant coating.
-
- J. Waterproofing Finish for Sloped Surfaces: Sto Flexyl;
- fiber-reinforced acrylic-based material formulated for
- mixing with Portland cement.
- NOTE ** Delete the following paragraph if specifying
- Decocoat coating only.
-
- K. Portland Cement: ASTM C 150, Type 1.
-
- L. Water: Clean, potable, not containing materials which
- would impair appearance or performance of coating
- materials.
-
- 2.3 MIXES
-
- A. Mix materials specified to be site-mixed in accordance
- with manufacturer's mixing instructions; do not dilute
- finish coatings except as instructed.
-
- B. Mix only enough materials that can be applied during
- working time recommended by manufacturer; do not retemper
- mixes.
-
- C. Do not add anti-freeze admixtures or other admixtures
- which may adversely affect performance or appearance of
- coating materials.
-
-
- PART 3 EXECUTION
-
- 3.1 EXAMINATION
- NOTE ** Design considerations for substrates:
- NOTE **
- NOTE ** Design for maximum allowable deflection, normal to
- wall plane, of L/360; include wind load
- requirements.
- NOTE **
- NOTE ** Prevent accumulation of water behind coating, by
- condensation within substrate or by water leakage.
- NOTE **
- NOTE ** Design sloped surfaces 1:2 (27 degrees) minimum,
- and minimum 12 inches (300 mm) width; increased
- slope is required in climates where ice or snow
- accumulation is likely - the application of StoMesh
- embedded in StoFlexyl is also required.
- NOTE **
- NOTE ** Coatings specified in this section are not for
- application below-grade, or on substrates subjected
- to intermittent or constant hydrostatic pressure.
- NOTE **
- NOTE ** For specific project conditions, consult the
- manufacturer's detail manual or technical
- representative.
- NOTE **
- A. Inspect substrates to receive coatings for the following:
- 1. Contamination: Presence of foreign matter which
- might affect coating performance or appearance.
- 2. Delamination, damage, defects, or deterioration.
- 3. Cracking: Measure widths of cracks; record
- locations.
- 4. Surface absorption and chalking.
- 5. Moisture content: Use moisture meter of type
- recommended by manufacturer to determine if moisture
- content is within limits recommended by manufacturer.
- 6. Surface plane within tolerances required in
- manufacturer's instructions.
-
- 3.2 PREPARATION
-
- A. Correct unacceptable conditions reported by installer.
-
- B. Protect surfaces adjacent to locations of coating
- application; do not allow coating materials on surfaces
- not indicated to receive them.
-
- C. Prepare substrates to receive coating materials in
- accordance with manufacturer's instructions and as
- follows:
- NOTE ** Delete any of the following sub-paragraphs not
- applicable to project.
- 1. Remove loose, damaged, or deteriorated materials.
- 2. Remove surface contaminants on concrete surfaces in
- accordance with ASTM D 4258.
- 3. Remove surface contaminants on concrete masonry
- surfaces in accordance with ASTM D 4261.
- 4. Repair surface defects using patching and leveling
- material.
- 5. Repair surface cracks using patching and leveling
- material, or patching and leveling material with
- fabric reinforcement, according to manufacturer's
- recommendations for crack size.
- 6. Apply surface conditioner to chalked or absorbent
- surfaces.
- 7. Apply skim coat to level substrates to required plane
- tolerances.
- 8. Trowel-apply waterproofing material with fabric
- reinforcement to sloped surfaces; immediately embed
- fabric reinforcement, lapping seams 2-1/2 inches (64
- mm).
-
- 3.3 APPLICATION
-
- A. Apply prime and finish coats in accordance with
- manufacturer's instructions; do not exceed manufacturer's
- recommended spread rate for coating materials.
-
- B. Do not allow coatings to be applied over sealant joints,
- cold joints, expansion joints, or control joints.
-
- C. At sloped surfaces, use waterproofing finish coating with
- reinforcing mesh.
- NOTE ** Where coating is the sole weather barrier in wall
- assembly, specify a continuous void-free and
- pinhole-free finish coating.
-
- D. Apply continuous void-free and pinhole-free finish
- coating.
-
- E. Finish final coats to match accepted mock-up.
-
- 3.4 PROTECTION
-
- A. Protect installed coatings from damage by subsequent
- construction activities.
-
- B. Repair installed coatings, if damaged by subsequent
- construction activities, in accordance with
- manufacturer's recommendations, so repairs are not
- visible at a distance of 10 feet (3 m).
- NOTE ** The following sample schedule may assist in
- establishing a schedule to identify locations of
- different colors and finishes; coordinate with
- drawings. Delete entire Article if not required.
-
- 3.5 SCHEDULES
-
- A. Location: Exterior concrete walls.
- 1. Type _________________.
- 2. Color: _____________________.
- 3. Texture: ___________________.
-
- B. Location: Interior gypsum board walls at corridors.
- 1. Type _________________.
- 2. Color: _____________________.
- 3. Texture: ___________________.
-
-
- END OF SECTION
-