A. General: Extend vapor retarder to extremities of areas to be protected from vapor transmission. Secure in place with adhesives or other anchorage system as indicated. Extend vapor retarder to cover miscellaneous voids in insulated substrates, including those filled with loose-fiber insulation.
B. Seal vertical joints in vapor retarders over framing by lapping not less than two wall studs. Fasten vapor retarders to wood framing at top, end, and bottom edges; at perimeter of wall openings; and at lap joints. Space fasteners 16 inches (400 mm) o.c.
AASF PX ADDITION THERMAL INSULATION 072100-5 C. Before installing vapor retarder, apply urethane sealant to flanges of metal framing including
runner tracks, metal studs, and framing around door and window openings. Seal overlapping joints in vapor retarders with vapor-retarder tape according to vapor-retarder manufacturer's written instructions. Seal butt joints with vapor-retarder tape. Locate all joints over framing members or other solid substrates.
D. Firmly attach vapor retarders to metal framing and solid substrates with vapor-retarder fasteners as recommended by vapor-retarder manufacturer.
E. Seal joints caused by pipes, conduits, electrical boxes, and similar items penetrating vapor retarders with vapor-retarder tape to create an airtight seal between penetrating objects and vapor retarder.
F. Repair tears or punctures in vapor retarders immediately before concealment by other work. Cover with vapor-retarder tape or another layer of vapor retarder.
AAFS PX ADDITION EXTERIOR INSULATION & FINISH SYSTEMS 072400 - 1 SECTION 072400 - EXTERIOR INSULATION AND FINISH SYSTEMS
1.1 - GENERAL:
A. System in this section refers to Class PB insulation and finish system consisting of adhesive mixture, insulation board, reinforcing mesh, base coat and finish. Plywood supporting substrate is specified in section 06100.
1. Class PB is the designation developed by the Exterior Insulation Manufacturers Association (EIMA).
a. System shall include venting layer in accordance with details provided and manufacturer's recommendations for moisture discharge.
2. See Section 072710 - Air Infiltration Barrier requirements. B. Submittals: In addition to product data, submit the following:
1. Samples of protective finish coating for each finish, color, and texture indicated. Minimum of four colors and/or textures will be used.
a. Test reports for system from independent testing laboratory. b. Installer certificates signed by system manufacturer.
2. Installer Qualifications: Certified in writing by system manufacturer as qualified for installation of systems indicated.
C. Field-Constructed Mock-Up: Upon approval of system, applicator/contractor shall erect a 3'x 3' sample wall panel that shall fully represent the completed EIFS, demonstrating proposed colors, textures and workmanship and all ancillary details including window abutments. This panel will be approved in writing by the architect and retained throughout the construction process to serve as a guide for completed EIFS work.
D. Warranty: After satisfactory completion the manufacturer shall issue a 7 year limited warranty for materials and a lifetime warranty against rust.
E. System shall have been tested to meet or exceed the following:
1. Abrasion Resistance: (ASTM D 968); no deleterious effects after 114 gallons of sand. 2. Absorption Freeze: Accelerated Weathering ASTM G 23 5000 hour, no deterioration 3. Impact Resistance: ASTM E 695, no cracks up to 6 feet
4. Mildew Resistance: Mil Standard 810B - no growth
5. Moisture Resistance: ASTM D 2247; no deleterious effects for 14 days 6. Water Infiltration: ASTM E 547 Full scale mock-up test
7. Water Vapor Transmission ASTM E 96 Water methods procedure Structural Tests: Full scale structural tests: ASTM E 330
8. Fire Tests: ASTM E 84 on coatings and insulation board. Modified ASTM E 108. ASTM E 119 Standard Fire test for building materials. ULC - S101 Type exposure for 15 minutes.
1.2 - PRODUCTS:
A. Manufacturers: Subject to compliance with requirements, provide Class PB systems of one of the following:
1. Bonsal; W.R. Bonsal Co. 2. Dryvit Systems, Inc. 3. ISPO USA, Inc. 4. Pleko Products, Inc. 5. Senergy Inc.
AAFS PX ADDITION EXTERIOR INSULATION & FINISH SYSTEMS 072400 - 2 6. Simplex Div., Anthony Industries, Inc.
7. STO Industries, Inc.
8. TEC Inc., an H.B. Fuller Co. 9. Thoro System Products.
10. Vitricon Div., Polymer Plastics Corp.
B. Provide colors and texture of protective coating selected by Architect from manufacturer's full range of standard colors and textures. A minimum of four colors/textures will be used for this project. C. Surface Sealer: System manufacturer's standard adhesion intermediary for improving bond between
supporting substrates and adhesive for application of insulation.
D. Adhesive for Application of Insulation: System manufacturer's standard formulation complying with the following requirements:
1. Job-mixed formulation of portland cement complying with ASTM C 150, Type 1, and polymer- based adhesive specified for base coat.
2. Factory-mixed formulation designed for adhesive attachment of insulation to substrates of type indicated.
3. Either job-mixed or ready-mixed formulation indicated above.
E. Molded Polystyrene Board Insulation: ASTM C 578, Type I; thickness as indicated (not less than 1- 1/2"), and complying with system manufacturer's requirements for material qualities.
F. Ventilation layer: Provide manufacturer's recommended venting mesh layer in accordance with details provided for moisture discharge.
G. Reinforcing Fabric: Balanced, alkali-resistant open-weave glass-fiber fabric approved by system manufacturer and complying with ASTM D 578 and the following requirements for minimum weight: 1. Intermediate Reinforcing Fabric: 15.0 oz. per sq. yd.
2. Strip Reinforcing Fabric: 3.75 oz. per sq. yd.
H. Base Coat Materials: System manufacturer's standard, job-mixed formulation of portland cement complying with ASTM C 150, Type I, white or natural color; and system manufacturer's standard polymer-based adhesive designated for base coat use.
I. Finish Coat Materials: System manufacturer's standard mixture complying with the following requirements:
1. Factory-mixed formulation of polymer emulsion admixture, colorfast mineral pigments, sound stone particles, and fillers.
a. Water: Clean and potable.
J. Mechanical Fasteners: System manufacturer's standard corrosion-resistant fastener assemblies, complete with washer and shaft attachments of type required for secure attachment to substrates provided.
K. Elastomeric Sealants: Chemically curing, elastomeric sealant as listed and recommended by system manufacturer for use indicated, compatible with joint fillers, joint substrates, and other related
materials, and complying with requirements of Division 7 Section "Joint Sealers" for products corresponding to description indicated below.