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- SECTION 07240
-
- EXTERIOR INSULATION AND FINISH SYSTEM
-
- NOTE ** Sto Finish Systems Toughwall Class PM, Class PB,
- and RainScreen EIF Systems.
- 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 ** Systems specified in this section are not for
- installation on substrates subjected to
- intermittent or constant hydrostatic pressure; for
- below-grade installations, specify Sto Flexyl.
- NOTE **
- NOTE ** Design sloped surfaces at 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 Sto Flexyl is also required.
- NOTE **
- NOTE ** For specific project conditions, consult the
- manufacturer's detail manual or technical
- representative.
- NOTE **
- NOTE ** SECTION 07240 - EXTERIOR INSULATION AND FINISH
- SYSTEM, Copyright 1997, The Architect's Catalog,
- Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
-
- A. Exterior Insulation and Finish System (EIFS), Class PM,
- in accordance with EIMA (PM).
-
- B. Exterior Insulation and Finish System (EIFS), Class PB,
- in accordance with EIMA (PB).
-
- C. Exterior Insulation and Finish System (EIFS), Class PB,
- in accordance with EIMA (PB), with drainage cavity and
- secondary weather-resistive barrier.
-
- 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 05400 - Cold Formed Metal Framing.
-
- D. Section 06100 - Rough Carpentry.
-
- E. Section 07620 - Sheet Metal Flashing and Trim.
-
- F. Section 07900 - Joint Sealers.
-
- G. 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 for 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 C 578 - Standard Specification for Rigid, Cellular
- Polystyrene Thermal Insulation.
-
- F. ASTM C 1063 - Standard Specification for Installation of
- Lathing and Furring to Receive Interior and Exterior
- Portland Cement-Based Plaster.
-
- G. ASTM D 226 - Standard Specification for Asphalt-Saturated
- Organic Felt Used in Roofing and Waterproofing.
-
- H. ASTM D 968 - Standard Test Methods for Abrasion
- Resistance of Organic Coatings by Falling Abrasive.
-
- I. ASTM D 1784 - Standard Specification for Rigid PolyVinyl
- Chloride (PVC) Compounds and Chlorinated PolyVinyl
- Chloride (CPVC) Compounds.
-
- J. ASTM D 2247 - Standard Practice for Testing Water
- Resistance of Coatings in 100% Relative Humidity.
-
- K. ASTM D 3273 - Standard Test Method for Resistance to
- Growth of Mold on the Surface of Interior Coatings in an
- Environmental Chamber.
-
- L. ASTM D 4258 - Standard Practice for Surface Cleaning
- Concrete for Coating.
-
- M. ASTM D 4261 - Standard Practice for Surface Cleaning
- Concrete Unit Masonry for Coating.
-
- N. ASTM E 84 - Standard Test Method for Surface Burning
- Characteristics of Building Materials.
-
- O. ASTM E 108 - Standard Test Methods for Fire Tests of Roof
- Coverings.
-
- P. ASTM E 119 - Standard Test Methods for Fire Tests of
- Building Construction and Materials.
-
- Q. ASTM E 330 - Standard Test Method for Structural
- Performance of Exterior Windows, Curtain Walls, and Doors
- by Uniform Static Air Pressure Difference.
-
- R. ASTM E 331 - Standard Test Method for Water Penetration
- of Exterior Windows, Curtain Walls, and Doors by Uniform
- Static Air Pressure Difference.
-
- S. ASTM E 695 - Standard Method of Measuring Relative
- Resistance of Wall, Floor, and Roof Construction to
- Impact Loading.
-
- T. ASTM G 23 - Standard Practice for Operating Light-
- Exposure Apparatus (Carbon-Arc Type) With and Without
- Water for Exposure of Nonmetallic Materials.
-
- U. ASTM G 53 - Standard Practice for Operating Light- and
- Water-Exposure Apparatus (Fluorescent UV-Condensation
- Type) for Exposure of Nonmetallic Materials.
-
- V. BOCA National Building Code, Section 1406.0; Building
- Officials and Code Administrators International (BOCA).
-
- W. C & I 2000 - Carry & Ivey Test Method 2000 for Drainage
- Performance of Exterior Finish Systems.
-
- X. EIMA 101.01 - Standard Test Method for Freeze-Thaw
- Resistance of Exterior Insulation and Finish Systems
- (EIFS), Class PB (modified ASTM C 67); EIFS Industry
- Members Association (EIMA).
-
- Y. EIMA 101.02 - Standard Test Method for Resistance to
- Water Penetration of Exterior Insulation and Finish
- Systems (EIFS), Class PB (modified ASTM E 331); EIFS
- Industry Members Association (EIMA).
-
- Z. EIMA 101.03 - Standard Test Method for Determining
- Tensile Adhesion Strength of Exterior Insulation and
- Finish Systems (EIFS) and Components, Class PB (modified
- ASTM C 297); EIFS Industry Members Association (EIMA).
-
- AA. EIMA 101.86 - Standard Test Method for Resistance of
- Exterior Insulation and Finish Systems (EIFS), Class PB,
- to the Effects of Rapid Deformation (Impact); EIFS
- Industry Members Association (EIMA).
-
- BB. EIMA 105.01 - Standard Test Method for Alkali Resistance
- of Glass Fiber Reinforcing Mesh Used in Exterior
- Insulation and Finish Systems (EIFS), Class PB; EIFS
- Industry Members Association (EIMA).
-
- CC. EIMA 300.01 - Guide for Use of Sealants with Exterior
- Insulation and Finish System (EIFS), Class PB; EIFS
- Industry Members Association (EIMA).
-
- DD. EIMA (PB) - Guideline Specification for Exterior
- Insulation and Finish System (EIFS), Class PB; EIFS
- Industry Members Association (EIMA).
-
- EE. EIMA (PM) - Guideline Specification for Exterior
- Insulation and Finish System (EIFS), Class PM; EIFS
- Industry Members Association (EIMA).
-
- FF. EIMA Guideline Specification for Expanded Polystyrene
- (EPS) Insulation Board; EIFS Industry Members Association
- (EIMA).
-
- GG. GA-253 - Application of Gypsum Sheathing; Gypsum
- Association (GA).
-
- HH. GA-600 - Fire Resistance Design Manual; Gypsum
- Association (GA).
-
- II. MIL-STD-810 - Environmental Test Methods and Engineering
- Guidelines; Fungus.
-
- JJ. SBCCI Standard Building Code, Section 2603.5; Southern
- Building Code Congress International (SBCCI).
-
- KK. UBC Standard 26-4 (formerly UBC 17-6) - Method of Test
- for the Evaluation of Flammability Characteristics of
- Exterior, Nonload-Bearing Wall Panel Assemblies Using
- Foam Plastic Insulation; Uniform Building Code;
- International Conference of Building Officials (ICBO).
-
- 1.4 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's descriptive literature and
- specifications for components of specified EIF systems,
- demonstrating compliance of products to specified
- requirements.
- NOTE ** Delete the following paragraph if specifying custom
- colors or finishes.
-
- C. Selection Samples: For each finish coating 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. Test reports: Certified reports from independent testing
- laboratory supporting compliance of EIF systems to
- specified requirements.
-
- F. Manufacturer Qualifications.
-
- G. Installer 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. Specimen of manufacturer's warranty documents.
-
- I. Manufacturer's printed installation instructions for each
- specified product, including product storage requirements
- and recommendations for specific project conditions.
-
- J. Operation and Maintenance Data: Manufacturer's printed
- instructions and recommendations for maintaining and
- cleaning of finish 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 indicated in the Contract Documents, and
- employing applicators having minimum three years
- experience applying products specified in this section.
-
- C. Mock-Up: Construct mock-up for each specified finish
- 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 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-ups may not remain as part of Work.
- 5. Accepted mock-ups 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
-
- 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.
-
- 1.8 SEQUENCING
- NOTE ** Retain paragraphs that 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
- EIF system installations are installed immediately after
- finish coating has dried.
-
- C. Ensure that joint sealers adjacent to EIF system
- installations 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. Acceptable 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.
- NOTE ** Select one of the following three systems and
- delete the other articles. If more than one system
- is required on the project, use the Schedule at the
- end of the section to identify locations of each,
- or indicate locations on the drawings.
-
- 2.2 EXTERIOR INSULATION AND FINISH SYSTEM - CLASS PM
-
- A. Exterior Insulation and Finish System: Sto Toughwall
- Class PM System, with the following properties:
- 1. Listed in GA-600.
- 2. Abrasion resistance, when tested in accordance with
- ASTM D 968: No cracking, checking, or loss of film
- integrity at 528 quarts (500 l) sand.
- 3. Accelerated weathering resistance, when tested in
- accordance with ASTM G 23 or ASTM G 53: No
- deleterious effects at 5-power magnification after
- 2000 hours.
- 4. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No deleterious effects after 50
- cycles.
- 5. Mildew resistance, when tested in accordance with Mil
- Std 810, Method 508: No growth supported after 28
- days.
- 6. Salt spray resistance, when tested in accordance with
- ASTM B 117: No deleterious effects after 300 hours.
- 7. Water penetration, when tested in accordance with
- ASTM E 331: No water penetration.
- 8. Water resistance, when tested in accordance with ASTM
- D 2247: No deleterious effects after 14 days.
- 9. Fire resistance rating effect on wall assembly, when
- tested in accordance with ASTM E 119: No change.
- 10. Full-scale diversified fire test, in accordance with
- ASTM E 108 (modified): No significant contribution
- to vertical or horizontal flame spread.
- 11. Full-scale multi-story fire test, in accordance with
- UBC Std 26-4: Pass the following:
- a. Resistance to vertical spread of flame within
- core of panel from one story to the next.
- b. Resistance to flame propagation over exterior
- surface.
- c. Resistance to vertical spread of flame interior
- surface from one story to the next.
- d. Resistance to significant lateral spread of flame
- from compartment of fire origin to adjacent
- spaces.
- 12. Radiant heat exposure, in accordance with National
- Building Code, Section 1406.0, and Standard Building
- Code, Section 2603.5: No ignition at 20 minutes.
- 13. Impact resistance, when tested in accordance with
- ASTM E 695: No cracking or denting after 6-foot (1.8
- m) drop of 30-pound (13.6 kg) weight.
- 14. Impact classification, in accordance with EIMA
- 101.86: High.
- 15. Wind load resistance of assembly on 18 gage (1.27 mm)
- metal framing spaced at 16 inches (400 mm) on center,
- when tested in accordance with ASTM E 330: 200
- pounds per square foot (9.6 kPa) positive pressure,
- 180 pounds per square foot (8.6 kPa) negative
- pressure.
- 16. Surface burning characteristics, when tested in
- accordance with ASTM E 84: Adhesive, insulation
- board, reinforced base coat, and finish coat each
- have flame spread of 25 or less, and smoke developed
- of 450 or less.
-
- B. Insulation Board: STYROFOAM(R) Brand extruded
- polystyrene board, manufactured by Dow Chemical Company;
- extruded polystyrene (XEPS) insulation board complying
- with ASTM C 578, Type IV.
-
- C. Mechanical Fastening Components: Mechanical fasteners of
- type and size specified in EIFS manufacturer's
- instructions for indicated substrate, and having pull-out
- strength required for indicated windload requirements,
- with EIFS manufacturer's recommended proprietary
- fastening accessories.
-
- D. Trim: Provide casing beads, corner beads, starter track,
- expansion joint assemblies, and control joint assemblies
- indicated on drawings.
- 1. Comply with ASTM C 1063.
- NOTE ** Delete all but one of the following three sub-
- paragraphs to specify material. Vinyl or zinc
- alloy is recommended for high-humidity or salt-
- laden atmospheric conditions; zinc alloy or
- galvanized steel is recommended for freeze/thaw
- climates.
- 2. Material: Vinyl, conforming to ASTM D 1784.
- 3. Material: Zinc alloy, conforming to ASTM B 69.
- 4. Material: Galvanized steel, conforming to ASTM A
- 653/A 653M.
-
- E. Base Coat: Sto Toughwall; single-component, fiber-
- reinforced, polymer-modified cementitious base coat
- material.
-
- F. Reinforcing Mesh: Sto Mesh C; nominal 5.4 ounces per
- square yard (183 g/sq m) symmetrical, interlaced, open-
- weave glass-fiber fabric, with alkaline-resistant coating
- for compatibility with coating materials.
-
- G. Finish Coating:
- NOTE ** Delete one of the following two paragraphs.
- 1. Type: Acrylic-based textured coating, with acrylic
- primer tinted to match.
- 2. Type: Silicone-enhanced textured coating, with
- silicone-enhanced primer tinted to match.
- NOTE ** Specify finish coat with lightness value of 20,
- minimum; darker colors not recommended over
- polystyrene insulation board.
- NOTE **
- NOTE ** Delete all but one of the following three
- paragraphs. Coordinate with sample submittals
- specified.
- 3. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 4. Color _________________; ___________ texture.
- 5. Colors and textures: Specified in SCHEDULES Article
- of this section.
-
- 2.3 EXTERIOR INSULATION AND FINISH SYSTEM - CLASS PB
-
- A. Exterior Insulation and Finish System: Sto Class PB
- System, with the following properties:
- 1. Listed in GA-600.
- 2. Abrasion resistance, when tested in accordance with
- ASTM D 968: No cracking, checking, or loss of film
- integrity at 1057 quarts (1000 l) sand.
- 3. Accelerated weathering resistance, when tested in
- accordance with ASTM G 23: No deleterious effects at
- 5-power magnification after 2000 hours.
- 4. Accelerated weathering resistance, when tested in
- accordance with ASTM G 53: No deleterious effects at
- 10-power magnification after 5000 hours.
- 5. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No deleterious effects after 90
- cycles.
- 6. Mildew resistance, when tested in accordance with
- ASTM D 3273: No growth supported after 42 days.
- 7. Salt spray resistance, when tested in accordance with
- ASTM B 117: No deleterious effects after 700 hours.
- 8. Water penetration, when tested in accordance with
- EIMA 101.02: No water penetration.
- 9. Water resistance, when tested in accordance with ASTM
- D 2247: No deleterious effects after 28 days.
- 10. Fire resistance rating effect on wall assembly, when
- tested in accordance with ASTM E 119: No change.
- 11. Full-scale diversified fire test, in accordance with
- ASTM E 108 (modified): No significant contribution
- to vertical or horizontal flame spread.
- 12. Full-scale multi-story fire test, in accordance with
- UBC Standard 25-4: Pass the following:
- a. Resistance to vertical spread of flame within
- core of panel from one story to the next.
- b. Resistance to flame propagation over exterior
- surface.
- c. Resistance to vertical spread of flame interior
- surface from one story to the next.
- d. Resistance to significant lateral spread of flame
- from compartment of fire origin to adjacent
- spaces.
- 13. Radiant heat exposure, in accordance with National
- Building Code, Section 1406.0, and Standard Building
- Code, Section 2603.5: No ignition at 20 minutes.
- 14. Impact resistance: Conform to the following EIMA
- 101.86 classifications:
- a. Standard: 25 inch-pounds (2.83 J) to 49 inch-
- pounds (5.54 J).
- b. Medium: 50 inch-pounds (5.65 J) to 89 inch-
- pounds (10.1 J).
- c. High: 90 inch-pounds (10.2 J) to 150 inch-pounds
- (17.0 J).
- d. Ultra-high: Over 150 inch-pounds (17.1 J).
- 15. Wind load resistance of assembly on 18 gage (1.27 mm)
- metal framing spaced at 16 inches (400 mm) on center,
- when tested in accordance with ASTM E 330: 323
- pounds per square foot (15.5 kPa) positive pressure,
- 239 pounds per square foot (11.4 kPa) negative
- pressure.
- 16. Surface burning characteristics, when tested in
- accordance with ASTM E 84: Adhesive, insulation
- board, reinforced base coat, and finish coat each
- have flame spread of 25 or less, and smoke developed
- of 450 or less.
- 17. Alkali resistance of reinforcing mesh, in accordance
- with EIMA 105.01: Greater than 120 pounds per linear
- inch (21 dN/cm) tensile strength retained.
- 18. Tensile adhesion, in accordance with EIMA 101.03: No
- failure in adhesive, base coat, or finish coat;
- minimum 5 pounds per square inch (34 kPa) before and
- after accelerated weathering and freeze/thaw
- exposure.
-
- B. Surface Preparation Materials: Manufacturer's
- proprietary materials indicated, specified in
- manufacturer's instructions, or recommended by
- manufacturer to prepare substrates for correct
- application of EIFS materials, including the following:
- 1. Surface conditioner: Acrylic-based surface sealer
- and hardener for chalking substrates or highly-
- absorptive substrates.
- 2. 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.
- 3. 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.
-
- C. Adhesive: Type as recommended by system manufacturer for
- substrate and exposure.
-
- D. Insulation Board for Above-Grade Applications: Expanded
- polystyrene insulation board supplied by EIFS materials
- manufacturer, conforming to ASTM C 578, Type I, and EIMA
- Guideline Specification for Expanded Polystyrene (EPS)
- Insulation Board, nominal 1.0 pound per cubic foot (16
- kg/cu m) density.
- NOTE ** Delete one or both of the following paragraphs for
- below-grade insulation. Verify that local code
- allows below-grade installation.
-
- E. Insulation Board for Below-Grade Applications: Expanded
- polystyrene insulation board supplied by EIFS materials
- manufacturer, conforming to ASTM C 578, Type IV, nominal
- 2.0 pounds per cubic foot (32 kg/cu m) density.
-
- F. Insulation Board for Below-Grade Applications: Rigid
- extruded polystyrene (XEPS) insulation board supplied by
- EIFS materials manufacturer, conforming to ASTM C 578,
- Type IV, nominal 2.0 pounds per cubic foot (32 kg/cu m)
- density.
- NOTE ** Delete all but one base coat type below. Sto
- Flexyl is used for below-grade installations and
- where snow and ice accumulation is likely on sloped
- surfaces.
-
- G. Base Coat: Sto RFP; non-cementitious, fiber-reinforced,
- acrylic base coating.
-
- H. Base Coat: Sto BTS-B; single-component, polymer-modified
- cementitious base coating containing less than 33 percent
- Portland cement by weight.
-
- I. Base Coat: Sto Flexyl; fiber-reinforced acrylic base
- coating mixed with Portland cement.
-
- J. Reinforcing Mesh: Open-weave glass-fiber fabric with
- alkaline-resistant coating.
- 1. Standard Mesh: Sto Mesh; nominal 4.8 ounces per
- square yard (163 g/sq m) symmetrical, interlaced
- fabric, with minimum 25 percent by weight alkaline-
- resistant coating.
- 2. High-Impact Mesh: Sto Intermediate Mesh; nominal
- 11.2 ounces per square yard (380 g/sq m) interwoven
- fabric.
- NOTE ** Specify ultra high impact mesh at all ground floor
- locations and all other locations of anticipated
- impact or abuse.
- 3. Ultra High-Impact Mesh: Sto Armor Mat; nominal 15
- ounces per square yard (509 g/sq m) ultra high-
- impact, double-strand, interwoven fabric.
- NOTE ** If more than one type of mesh is required in
- different locations, edit the following paragraph
- to indicate locations. Otherwise, delete the
- following paragraph and the types above not
- required.
- 4. Use standard mesh over entire area; use high-impact
- mesh at ______; use ultra high-impact mesh at
- _______.
-
- K. Detailing Mesh: Sto Detail Mesh; nominal 4.5 ounces per
- square yard (153 g/sq m) flexible symmetrical,
- interlaced, glass-fiber fabric, with alkaline-resistant
- coating.
-
- L. Corner Reinforcing Mesh: Sto Corner Mat; nominal 6.25
- ounces per square yard (212 g/sq m) pre-creased open-
- weave woven glass-fiber fabric, with alkaline-resistant
- coating.
-
- M. Finish Coating:
- NOTE ** Delete one of the following two paragraphs.
- 1. Type: Acrylic-based textured coating, with acrylic
- primer tinted to match.
- 2. Type: Silicone-enhanced textured coating, with
- silicone-enhanced primer tinted to match.
- NOTE ** Specify finish coat with lightness value of 20,
- minimum; darker colors not recommended over
- polystyrene insulation board.
- NOTE **
- NOTE ** Delete all but one of the following three
- paragraphs. Coordinate with sample submittals
- specified.
- 3. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 4. Color _________________; ___________ texture.
- 5. Colors and textures: Specified in SCHEDULES Article
- of this section.
-
- 2.4 EXTERIOR INSULATION AND FINISH SYSTEM - CLASS PB WITH
- DRAINAGE CAVITY AND SECONDARY WEATHER-RESISTIVE BARRIER
-
- A. Exterior Insulation and Finish System: Sto Rainscreen
- System, with the following properties:
- 1. Listed in GA-600.
- 2. Abrasion resistance, when tested in accordance with
- ASTM D 968: No cracking, checking, or loss of film
- integrity at 1057 quarts (1000 l) sand.
- 3. Accelerated weathering resistance, when tested in
- accordance with ASTM G 23: No deleterious effects at
- 5-power magnification after 2000 hours.
- 4. Accelerated weathering resistance, when tested in
- accordance with ASTM G 53: No deleterious effects at
- 5-power magnification after 5000 hours.
- 5. Freeze/thaw resistance, when tested in accordance
- with EIMA 101.01: No deleterious effects after 90
- cycles.
- 6. Mildew resistance, when tested in accordance with
- ASTM D 3273: No growth supported after 28 days.
- 7. Salt spray resistance, when tested in accordance with
- ASTM B 117: No deleterious effects after 700 hours.
- 8. Water penetration, when tested in accordance with
- EIMA 101.02: No water penetration beyond plane of
- base coat after 15 minutes at 6.24 pounds per square
- foot (299 Pa).
- 9. Water resistance, when tested in accordance with ASTM
- D 2247: No deleterious effects after 28 days.
- 10. Fire resistance rating effect on wall assembly, when
- tested in accordance with ASTM E 119: No change.
- 11. Impact resistance: Conform to the following EIMA
- 101.86 classifications:
- a. Standard: 25 inch-pounds (2.83 J) to 49 inch-
- pounds (5.54 J).
- b. Medium: 50 inch-pounds (5.65 J) to 89 inch-
- pounds (10.1 J).
- c. High: 90 inch-pounds (10.2 J) to 150 inch-pounds
- (17.0 J).
- d. Ultra-high: Over 150 inch-pounds (17.1 J).
- NOTE ** Retain one of the following two sub-paragraphs;
- first is for 1 pound per cubic foot (16 kg/ cu m)
- expanded polystyrene insulation, second is for 2
- pounds per cubic foot (32 kg/ cu m) expanded
- polystyrene insulation.
- 12. Wind load resistance of assembly on 18 gage (1.27 mm)
- metal framing spaced at 16 inches (400 mm) on center,
- when tested in accordance with ASTM E 330: 193
- pounds per square foot (9.24 kPa) positive pressure,
- 53 pounds per square foot (2.54 kPa) negative
- pressure.
- 13. Wind load resistance of assembly on 18 gage (1.27 mm)
- metal framing spaced at 16 inches (400 mm) on center,
- when tested in accordance with ASTM E 330: 193
- pounds per square foot (9.24 kPa) positive pressure,
- 82 pounds per square foot (3.93 kPa) negative
- pressure.
- 14. Surface burning characteristics, when tested in
- accordance with ASTM E 84: Adhesive, insulation
- board, reinforced base coat, and finish coat each
- have flame spread of 25 or less, and smoke developed
- of 450 or less.
- 15. Alkali resistance of reinforcing mesh, in accordance
- with EIMA 105.01: Greater than 120 pounds per linear
- inch (21 dN/cm) tensile strength retained.
- 16. Drainage efficiency, when tested in accordance with C
- & I 2000: 95 percent.
-
- B. Secondary Weather-Resistive Barrier: Either asphalt-
- impregnated glass-fiber felt conforming to ASTM D 226,
- Type I, or Kraft waterproof building paper.
-
- C. Flexible Flashing: Sto Flexible Flashing; rubberized
- asphalt cold-applied, self-adhering membrane flashing
- supplied by EIFS materials manufacturer.
-
- D. Sheet Metal Flashing: Galvanized or corrosion-resistant
- metal, minimum 26 gage (0.48 mm).
-
- E. Starter Track: Rigid polyvinyl chloride extrusion, with
- weepholes and drip edge; supplied by EIFS materials
- manufacturer.
-
- F. Insulation Board for Above-Grade Applications: Sto
- Drainage Expanded Polystyrene (EPS) Board; expanded
- polystyrene insulation board, with drainage grooves one
- face, supplied by EIFS materials manufacturer.
- 1. Comply with ASTM C 578, Type I, and EIMA Guideline
- Specification for Expanded Polystyrene (EPS)
- Insulation Board.
- 2. Density: 1.0 pound per cubic foot (16 kg/cu m)
- nominal.
- 3. Thickness: 1-1/2 inches (38 mm), minimum.
- NOTE ** Delete one or both of the following insulation
- types. Verify that local code permits below-grade
- insulation.
-
- G. Insulation Board for Below-Grade Applications: Sto
- Drainage Expanded Polystyrene (EPS) Board; expanded
- polystyrene insulation board, with drainage grooves one
- face, supplied by EIFS materials manufacturer.
- 1. Comply with ASTM C 578, Type IV.
- 2. Density: 2.0 pounds per cubic foot (32 kg/cu m)
- nominal.
- 3. Thickness: 1-1/2 inches (38 mm), minimum.
-
- H. Insulation Board for Below-Grade Applications: Rigid
- extruded polystyrene (XEPS) insulation board, with
- drainage grooves one face, supplied by EIFS materials
- manufacturer.
- 1. Comply with ASTM C 578, Type IV.
- 2. Density: 2.0 pounds per cubic foot (32 kg/cu m),
- nominal.
- 3. Thickness: 1-1/2 inches (38 mm), minimum.
- NOTE ** Delete all but one base coat type below. Sto
- Flexyl is used for below-grade installations and
- where snow and ice accumulation is likely on sloped
- surfaces.
-
- I. Base Coat: Sto RFP; non-cementitious, fiber-reinforced,
- acrylic base coating.
-
- J. Base Coat: Sto BTS-B; single-component, polymer-modified
- cementitious base coating containing less than 33 percent
- Portland cement by weight.
-
- K. Base Coat: Sto BTS-PLUS; single-component, polymer-
- modified high-build cementitious base coating containing
- less than 33 percent Portland cement by weight.
-
- L. Base Coat: Sto Flexyl; fiber-reinforced acrylic base
- coating mixed with Portland cement.
-
- M. Reinforcing Mesh: Open-weave glass-fiber fabric with
- alkaline-resistant coating.
- 1. Standard Mesh: Sto Mesh; nominal 4.8 ounces per
- square yard (163 g/sq m) symmetrical, interlaced
- fabric, with minimum 25 percent by weight alkaline-
- resistant coating.
- 2. High-Impact Mesh: Sto Intermediate Mesh; nominal
- 11.2 ounces per square yard (380 g/sq m) interwoven
- fabric.
- NOTE ** Specify ultra high impact mesh at all ground floor
- locations and all other locations of anticipated
- impact or abuse.
- 3. Ultra High-Impact Mesh: Sto Armor Mat; nominal 15
- ounces per square yard (509 g/sq m) ultra high-
- impact, double-strand, interwoven fabric.
- NOTE ** If more than one type of mesh is required in
- different locations, edit the following paragraph
- to indicate locations. Otherwise, delete the
- following paragraph and the types above not
- required.
- 4. Use standard mesh over entire area; use high-impact
- mesh at ______; use ultra high-impact mesh at
- _______.
-
- N. Detailing Mesh: Sto Detail Mesh; nominal 4.5 ounces per
- square yard (153 g/sq m) flexible symmetrical,
- interlaced, glass-fiber fabric, with alkaline-resistant
- coating.
-
- O. Corner Reinforcing Mesh: Sto Corner Mat; nominal 6.25
- ounces per square yard (212 g/sq m) pre-creased open-
- weave woven glass-fiber fabric, with alkaline-resistant
- coating.
-
- P. Finish Coating:
- NOTE ** Delete one of the following two paragraphs.
- 1. Type: Acrylic-based textured coating, with acrylic
- primer tinted to match.
- 2. Type: Silicone-enhanced textured coating, with
- silicone-enhanced primer tinted to match.
- NOTE ** Specify finish coat with lightness value of 20,
- minimum; darker colors not recommended over
- polystyrene insulation board.
- NOTE **
- NOTE ** Delete all but one of the following three
- paragraphs. Coordinate with sample submittals
- specified.
- 3. Color and texture: Selected from full range of
- manufacturer's standard selections.
- 4. Color _________________; ___________ texture.
- 5. Colors and textures: Specified in SCHEDULES Article
- of this section.
-
- 2.5 ACCESSORY MATERIALS
-
- A. Joint Sealant: Comply with EIMA Standard 300.01; minimum
- 50 percent elongation.
- NOTE ** Delete the following two paragraphs if only Class
- PM system is specified.
-
- B. Portland Cement: ASTM C 150, Type I.
-
- C. Water: Clean, potable, not containing materials which
- would impair appearance or performance of coating
- materials.
-
- 2.6 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 ** The EIFS manufacturer is not responsible for design
- of the substrate, including its structural support.
- The following are some design considerations for
- substrates:
- NOTE **
- NOTE ** Design for maximum allowable deflection, normal to
- wall plane, of L/240 for PB System, L/360 for PM
- System; include wind load requirements.
- NOTE **
- NOTE ** Prevent accumulation of water behind coating, by
- condensation within substrate or by water leakage.
-
-
- NOTE ** Delete requirements in the following paragraph not
- applicable to project.
-
- A. Inspect substrates to receive EIF systems 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.
- NOTE ** Delete substrates that are not required.
- 7. Installation of exterior gypsum sheathing conforming
- to GA 253.
- 8. Installation of Exterior Grade and Exposure 1 wood-
- based sheathing conforming to APA J20G.
- 9. Installation of glass-fiber mat faced gypsum
- sheathing conforming to sheathing manufacturer's
- instructions.
- 10. Installation of cementitious sheathing conforming to
- sheathing manufacturer's instructions.
- NOTE ** Provide minimum 3/4-inch (19 mm) wide expansion
- joints in EIFS where they exist in substrate or
- supporting construction, where EIFS abuts
- dissimilar construction or materials, at changes in
- building height, and at floorlines of multi-story
- wood construction; provide minimum 1/2-inch (13 mm)
- wide sealant joints at penetrations through EIFS
- system.
- NOTE **
- NOTE ** Do not allow coatings to be applied over joints.
-
- B. Verify that joints in substrates are in accordance with
- EIFS manufacturer's recommendations.
-
- 3.2 PREPARATION
-
- A. Correct unacceptable conditions before proceeding.
-
- B. Protect surfaces adjacent to locations of EIF system
- installation; do not allow EIF system materials on
- surfaces not indicated to receive them.
-
- C. Prepare substrates to receive EIF system 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. Replace damaged sheathing.
- 7. Apply surface conditioner to chalked or absorbent
- surfaces.
- 8. Apply skim coat to level substrates to required plane
- tolerances.
-
- 3.3 INSTALLATION
-
- A. Install EIF system components in accordance with
- manufacturer's instructions and recommendations.
-
- B. Apply prime and finish coats in accordance with
- manufacturer's instructions; do not exceed manufacturer's
- recommended spread rate for coating materials.
-
- C. Do not apply coatings over sealant joints, cold joints,
- expansion joints, or control joints.
-
- D. Finish final coats to match accepted mock-ups.
-
- E. Seal all joints between EIF system and adjacent materials
- using specified sealant.
-
- 3.4 PROTECTION
-
- A. Protect installed EIF system from damage by subsequent
- construction activities.
-
- B. Repair installed EIF system, if damaged by subsequent
- construction activities, in accordance with
- manufacturer's recommendations, to Architect's
- acceptance; if damaged areas of EIF system cannot be
- repaired to Architect's acceptance, replace system
- components to nearest adjacent joints.
- NOTE ** The following sample schedule may assist in
- establishing a schedule to identify locations of
- products in the project; coordinate with drawings.
- Delete entire Article if not required.
-
- 3.5 SCHEDULES
-
- A. Location: Exterior concrete walls.
- 1. System type: Class PM.
- 2. Color: _____________________.
- 3. Texture: ___________________.
-
- B. Location: Exterior metal stud framing with exterior
- glass-fiber mat gypsum sheathing.
- 1. System type: Class PB with drainage cavity and
- secondary weather-resistive barrier.
- 2. Color: _____________________.
- 3. Texture: ___________________.
-
-
- END OF SECTION
-