A0002 SPEC 07 26 30.pdf

SECTION 07 26 30

SPRAY POLYURETHANE FOAM INSULATING AIR BARRIER SYSTEM (ABR)

02/12

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C1029 Standard Specification for Spray-Applied Rigid Cellular Polyurethane Thermal Insulation

ASTM C518 (2010) Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus

ASTM D 1621 (2010) Compressive Properties of Rigid Cellular Plastics

ASTM D 1622 (2008) Apparent Density of Rigid Cellular Plastics

ASTM D 1623 (2009) Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics

ASTM D 2856 (1994; R 1998) Open-Cell Content of Rigid Cellular Plastics by the Air Pycnometer

ASTM D 4263 (1983; R 2005) Indicating Moisture in Concrete by the Plastic Sheet Method

ASTM D 4541 (2009e1) Pull-Off Strength of Coatings Using Portable Adhesion Testers

ASTM E 1105 (2000; R 2008) Standard Test Method for Field Determination of Water Penetration of Installed Exterior Windows, Skylights, Doors, and Curtain Walls, by Uniform or Cyclic Static Air Pressure Difference

ASTM E1186 (2017) Standard Practices for Air Leakage Site Detection in Building Envelopes and Air Barrier Systems

ASTM E2178 Standard Test Method for Air Permeance of Building Materials

ASTM E2357 Standard Test Method for Determining Air Leakage of Air Barrier Assemblies

ASTM E 783 (2002; R 2010) Standard Test Method for Field Measurement of Air Leakage Through Installed Exterior Windows and Doors

ASTM E 84 (2011a) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM E 96 (2010) Standard Test Methods for Water Vapor Transmission of Materials

INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)

IEC 1215 Crystalline Silicone Terrestrial Photovoltaic (PV) Modules Design Qualification and Type Approval

UNDERWRITERS LABORATORIES (UL)

UL 1703 Safety for Flat-Plate Photovoltaic Modules

UL 1741 Static Inverters and Charge Controllers for Use in Photovoltaic Power Systems.

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 2008 National Electrical Code

U.S. GREEN BUILDING COUNCIL (USGBC)

LEED (2009) Leadership in Energy and Environmental Design(tm) Green Building Rating System for New Construction (LEED-NC Version 3)

1.2 SECTION INCLUDES

This Section specifies a closed-cell spray polyurethane foam that is one coomponent of the air and vapor barrier in the building air barrier assemblies.

Related Work in other Sections include the following:

1. Section 01 45 00.00 50 QUALITY CONTROL; Contractor Quality Control for construction projects or design-build construction projects.

2. Section 01 50 00 TEMPORARY CONSTRUCTION FACILITIES; requirement to schedule work to prevent sunlight and weather exposure of materials beyond limits established by manufacturer; requirement to protect materials from damage after installation and prior to installation of enclosing work.

3. Section 04 20 00 MASONRY; requirement that backup masonry joints are flush and completely filled with mortar, and that excesss mortar on brick ties be removed; requirement for gap at deflection joints and fillers; coordination with sequencing of through-wall flashing.

4. Section 07 13 53 ; ELASTOMERIC SHEET WATERPROOFING; self-adhering membrane air barrier; requirement for material overlap.

5. Section 09 29 00 GYSPUM BOARD: Glass mat gypsum sheathing; requirement that backup gypsum sheathing has been installed with damaged corners repaired, joints filled and surface flush with compatible material as acceptable to the self-adhering air and vapor barrier manufacturer;

requirement for gap at deflection joints and fillers.

1.3 SYSTEM DESCRIPTION

1.3.1 Local/Regional Content Materials

See Section 01 33 29 LEED(tm) DOCUMENTATION for cumulative total local/regional material requirements. Documentation shall indicate percentage of local/regional content per unit of product. Indicate relative dollar value of regional content products to total dollar value of products included in the project.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES

SD-02 Shop Drawings

Air Barrier ; G; NAO A/E

Submit shop drawings showing locations and extent of air barrier assemblies and details of all typical conditions, intersections with other envelope assemblies and materials, membrane counter-flashings, and details showing how gaps in the construction will be bridged, how inside and outside corners are negotiated, how materials that cover the air barrier are secured with air-tight condition maintained, and how miscellaneous penetrations such as conduits, pipes electric boxes and similar items are sealed.

Mock-up ; G; NAO A/E

Submit shop drawings of proposed mock-ups showing plans, elevations, large-scale details, and connections to the test apparatus.

SD-03 Product Data

Submit manufacturer's product data, manufacturer's printed instructions for evaluating, preparing, and treating substrate, temperature and other limitations of installation conditions, technical data, and tested physical and performance properties.

Materials

Submit letter from primary materials manufacturer indicating approval of products not manufactured by primary manufacturer.

Include statement that materials are adhesively and chemical compatible with adjacent materials proposed for use.

Peel-adhesion

Submit reports indicating that field peel-adhesion test on all materials to which sealants are adhered have been performed and the changes made, if required, to other approved materials, in order to achieve successful adhesion.

Submit research / evaluation report for foam plastic insulation from ICC-ES or equivalent.

Include VOC content of each material.

Include statement that materials are compatible with adjacent material proposed for use.

Include recommended values for field adhesion test on each substrate.

Local/Regional Content Materials ( LEED)

SD-04 Samples

Materials

Submit clearly labeled samples, 3 by 4 inch (75 mm by 100 mm) minimum size of each material specified.

SD-06 Test Reports

Field Test Results of Mock-up

Submit test results of air leakage test and water leakage test of mock-up in accordance with specified standards, including retesting if initial results are not satisfactory.

SD-07 Certificates

Contractor Qualifications

Submit certificates of completion for all workers for Center For Polyurethane Industry (CPI) Health And Safety Training Course.

Quality Assurance Program

Submit evidence of current accreditation and certification under the Air Barrier Association of America's (ABAA) Quality Assurance Program. Submit accreditation number of manufacturer and certification number of installers at time of submittal.

1.5 PERFORMANCE REQUIREMENTS

Material Performance: Provide materials which have an air permeance not to exceed 0.004 cubic feet per minute per square foot under a pressure differential of 0.3 in. water (1.57 psf) (0.02 L/m2 @ 75 Pa.) when tested according to ASTM E2178.

System Performance. Substantiate that air barrier material used as/in a system, will have an air permeance not to exceed .15 L/m2 @75 Pa. when tested according to ASTM E2357.

Connections to Adjacent Materials: Provide connections to prevent air leakage migration at the following locations:

1. Foundation and walls, including penetrations, ties and anchors.

2. Walls, windows, curtain walls, storefronts, louvers or doors.

3. Different wall assemblies, and fixed openings within those assemblies.

4. Wall and roof connections.

5. Walls, floor and roof across construction, control and expansion joints.

6. Walls, floors and roof to utility, pipe and duct penetrations.

7. All other leakage pathways in the building envelope.

1.6 QUALITY ASSURANCE

1.6.1 Air Barrier Installer Qualifications

Currently accredited by the Air Barrier Association of America (ABAA) whose applicators are certified in accordance with the ABAA Quality Assurance Program.

1. Installers shall also be certified by ABAA. Installers shall have their photo-identification certification cards in their possession and available on the project site, for inspection upon request.

2. Installers shall show evidence of having basic training in foam application and materials.

1.6.2 Manufacturer

Obtain primary materials from a single manufacturer regularly engaged in manufacturing air barrier membranes. Obtain secondary materials from a source acceptable to the primary materials manufacturer. Manufacturer shall be SPFA accredited and ISO 9002 Certified.

1.6.3 Accredited Laboratory Testing for Materials

Laboratory accredited by International Code Council (ICC), International Accreditation Service Inc. (IAS), American Association for Laboratory Accreditation (A2LA), or the Standards Council of Canada (SCC).

1.6.4 VOC Regulations

Provide products which comply with applicable regulations controlling the use of volatile organic compounds.

1.6.5 Preconstruction Meeting

General Contractor to organize and convene a minimum of two weeks prior to commencing Work of this Section. Agenda shall include, at a minimum, construction and testing of mock-up, sequence of construction, coordination with substrate preparation, materials approved for use, compatibility of materials, coordination with installation of adjacent and covering materials, and details of construction. Construction site safety will be discussed to review hazards or fire risks during application.

Attendance is required by representatives of related trades including covering materials, substrate materials and adjacent materials.

1.6.6 Field Quality Assurance

Implement the ABAA Quality Assurance Program requirements. Cooperate with ABAA auditors and independent testing and inspection agencies engaged by the Owner. Do not cover air barrier until it has been inspected, tested and accepted.

1.6.7 Sample Wall Panel

General Contractor is responsible for coordinating the construction and testing of the mock-up per Division I and Section 07 05 23 PRESSURE TESTING AN AIR BARRIER SYSTEM FOR AIR TIGHTNESS. Mock-up shall be representative of primary exterior wall assemblies and glazing assemblies including backup wall and typical penetrations as acceptable to the Architect. Mock-up shall be approximately 8 feet long by 8 feet high and include all components in the exterior wall assembly.

1.6.8 Mock-Up

Tests for Air and Water Infiltration: Test mock-up for air and water infiltration in accordance with ASTM E1186 (air leakage location) or ASTM E 783 (air leakage quantification), and ASTM E 1105 (water penetration). Use smoke tracer to locate sources of air leakage. If deficiencies are found, reconstruct mock-up and retest until satisfactory results are obtained. Deficiencies include air leakage beyond values specified, uncontrolled water leakage, unsatisfactory workmanship.

1. Perform the air leakage tests and water penetration test of mock-up prior to installation of cladding and trim but after installation of all fasteners for cladding and trim and after installation of other penetrating elements.

1.6.9 Mock-Up Tests for Adhesion

Test mock-up of materials for adhesion in accordance with manufacturer's recommendations. Perform test after curing period recommended by the manufacturer. Record mode of failure and area which failed in accordance with ASTM D 4541 . When the air barrier material manufacturer has established a minimum adhesion level for the product on the particular substrate, the inspection report shall indicate whether this requirement has been met. Where the manufacturer has not declared a minimum adhesion value for their product/substrate combination, then the inspector shall simply record the value.

1.7 DELIVERY, STORAGE, AND HANDLING

Deliver materials to Project site in original packages with seals unbroken, labeled with manufacturer's name, product, date of manufacture, and directions for storage.

Store materials in their original undamaged packages in a clean, dry, protected location and within temperature range required by air barrier membrane manufacturer. Protect stored materials from direct sunlight.

Empty containers, excess materials and debris should be removed from site as soon as possible for recycling. Recycle and disposal should follow all applicable regulatory requirements.

Handle materials in accordance with manufacturer's recommendations and applicable regulatory requirements.

1.8 PROJECT CONDITIONS

Temperature: Install air barrier to within range of ambient and substrate temperatures recommended by SPF air barrier manufacturer. Do not apply air barrier to a damp or wet substrate.

Field Conditions: Do not install air barrier to substrates in areas exposed to or contaminated by, snow, rain, fog, or mist. Do not install air barrier when the temperature of substrate surfaces and surrounding air temperatures are below those recommended by the manufacturer. It is recommended that spray foam application not be done within 5 degrees F of dew point.

1.9 WARRANTY

Material Warranty: Provide manufacturer's standard product warranty, for a minimum 3 year from date of Substantial Completion of spray foam application.

Installation Warranty: Provide installer's 3 year warranty from date of Substantial Completion of spray foam application, including all components of the air barrier assembly, against failures including loss of air tight seal, loss of watertight seal, loss of adhesion, loss of cohesion, failure to cure properly.

PART 2 PRODUCTS

2.1 MATERIALS

Spray Polyurethane Foam Air Barrier (ABR): Spray-applied materials as specified. Subject to compliance with ASTM C1029 and the following properties:

1. Properties

a. Density: Nominal 2.0 lbs/cf per ASTM D 1622

b. Closed-cell content: Greater than 90% per ASTM D 2856

c. Design R-Value: R-6.7 per inch thickness per ASTM C518

d. Flame spread: Less than 25 per ASTM E 84

e. Smoke developed: Less than 450 per ASTM E 84

f. Compressive strength: 22 psi per ASTM D 1621

g. Tensile strength: 28 psi per ASTM D 1623 Type C

h. Incorporating a zero ozone depleting blowing agent

i. Water vapor transmission: 1.82 perms per inch thickness per

ASTM E 96

2.2 AUXILIARY MATERIALS

Air-barrier Sealant at Transitions in Substrate and Connections to Adjacent Elements: Low-modulus pre-cured silicone extrusion and sealant for bonding extrusions to substrates as required to maintain continuity .

Transition Membrane Between Air Barrier Membrane and Roofing and Other Adjacent Materials: Comply with both air barrier manufacturer's recommendations and material manufacturer's recommendations. Transit ion membrane shall be compatible with spray polyurethane air and vapor barrier.

Air Barrier Transition Membrane shall meet the following performance criteria:

Self-adhered water resistive air barrier membrane comprised of rubberized asphalt integrally laminated to a blue engineered thermoplastic film surface; having the following typical physical properties:

a. Thickness, nominal: 40 mils (1.0 mm)

b. Minimum Application Temperature: 41°F (5 °C)

c. Service Temperature: -40 °F to 158 °F (-40 °C to 70 °C)

d. Water Vapor Permeance (ASTM E96 Method B): 0.08 Perms

e. Air Permeance (ASTM E2178): <0.0002 cfm/ft2 (0.0011 L/s.m.2)

f. Air leakage:

Assembly (ASTM E2357): Pass Air Leakage Rate (CAN/ULC-S742) Classification A1

g. Nail Sealability (AAMA 711, ASTM D1970 modified): Pass

h. Fire Testing (NFPA 285): Compliant in various wall assemblies

i. Declaration Status: LBC Red List Free

Self-Adhered Membrane Air Barrier:

In all areas that do not receive SPF air barrier, and as indicated in drawings, provide a self-adhered membrane air barrier and all applicable accessories, flashings, etc. for a complete and airtight assembly.

Self-adhered vapor permeable, water resistive air barrier consisting of a reinforced, modified polyolefin tri-laminate film surface and patented permeable adhesive technology with split-back poly-release film; having the following typical physical properties:

a. Thickness: 23 mils (0.58 mm)min.

b. Water Vapor Permeance (ASTM E96): 29 perms

c. Air Leakage of Air Barrier Assemblies (ASTM E2357): Pass

d. Air Permeance (ASTM E2178): Pass

e. Nail Sealability (ASTM D1970): Pass

f. Dry Tensile Strength (ASTM D882):

41 lbf /182N MD 29 lbf /129N CD

g. Surface Burning Characteristics (ASTM E84):

Flame Spread: Class A Smoke Development: Class A

h. Low Application Temperature: 20 degrees F (-7 degrees C) e4ecedgg Polygon

Counter flashing for Masonry Through-Wall Flashing: One of the following and as acceptable to the spray polyurethane foam air barrier manufacturer through wall flashing and shall be compatible with spray polyurethane air and vapor barrier.

1. Air-Shield by W. R. Meadows, Inc. (Basis of Design)

2. Blueskin TWF by Henry. (Basis of Design)

3. Hyload S/A Through Wall Flashing by Hyload, Inc. (Basis of Design)

4. CCW 705 by Carlisle Coatings & Waterproofing (Basis of Design)

Foam stop angle: Metal or plastic angle used for foam stop may be utilized to maintain specified foam thickness, but is not required. Indicate foam stop angle in shop drawings as needed.

1. Cold rolled galvanized metal

2. Aluminum

3. Stainless steel

4. Extruded plastic

Primers: Use primers when deemed necessary for SPF adhesion to substrates.

Portable SPF Application Units: Class 1, nominal 2 lb per cubic foot density, closed-cell SPF

1. Versi-Foam by RHH (Basis of Design)

2. Touch n' Foam by Convenience Products (Basis of Design)

PART 3 EXECUTION

3.1 EXAMINATION

The general contractor shall examine substrates, areas, and conditions under which air barrier assemblies will be applied, with installer present, for compliance with requirements.

1. Verify that surfaces and conditions are suitable prior to commencing work of this section. Do not proceed with installation until unsatisfactory conditions have been corrected.

2. Do not proceed with installation until after minimum concrete curing period recommended by air barrier manufacturer.

3. Ensure that the following conditions are met:

a. Surfaces are sound, dry, even, and free of oil, grease, dirt, excess mortar or other contaminants

b. Concrete surfaces are cured and dry, smooth without large voids, spalled areas or sharp protrusions.

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c. Masonry joints are flush and completely filled with mortar, and all excess mortar sitting on masonry ties has been removed.

4. Verify substrate is visibly dry and free of moisture. Test for capillary moisture by plastic sheet method according to ASTM D 4263 and take suitable measures until substrate passes moisture test or moisture meters.

5. Verify sealants used in sheathing are compatible with membrane proposed for use. Perform field peel-adhesion test on materials to which sealants are adhered.

6. Notify Architect or designated representative in writing of anticipated problems using air barrier over substrate prior to proceeding.

3.2 SURFACE PREPARATION

Clean, prepare, and treat substrate according to manufacturer's written instructions. Provide clean, dust-free, and dry substrate for air barrier application.

1. Ensure that penetrating work and clean up by other trades is in place and complete.

2. Prepare surfaces by air blast, vacuum, brushing, scrubbing, scraping, or grinding to remove loose mortar, dust, oil, grease, oxidation, mill scale and other contaminants which will affect adhesion and integrity of the spray polyurethane foam.

3. Wipe down metal surfaces to remove release agents or other non-compatible coatings, ( prime if necessary to insure adhesion ), using clean sponges or rags soaked in a cleaning material compatible with the spray polyurethane foam.

4. Ensure veneer anchors are in place and compatible with the spray foam.

Prime substrate for application of sheet membrane transition strips as recommended by manufacturer and as follows:

1. Prime masonry, concrete substrates with conditioning primers.

2. Prime glass-fiber surfaced gypsum sheathing an adequate number of coats to achieve required bond, with adequate drying time between coats.

3. Prime wood, metal, and painted substrates with primer.

4. Prepare, treat, and seal vertical and horizontal surfaces at terminations and penetrations through air barrier and at protrusions.

5. Follow industry safety practices as outlined on www.spraypolyurethane.com.

6. Read all material safety data sheets (if applicable) for being installed and coordinate requirements with other trades.

7. Discuss the spray areas and plans for safely protecting workers performing the application and keeping others out of that area during the application (spraying).

Protection from Spray Applied Materials on project conditions and as follows:

1. Mask and cover adjacent areas to protect from over spray.

2. Ensure any required foam stop or back up material are in place to prevent over spray and achieve complete seal.

3. Seal off existing ventilation equipment. Install temporary ducting and fans to ensure exhaust fumes. Provide for make-up air if necessary.

4. Erect barriers, isolate area and post warning signs to advise non-protected personnel to avoid the spray area.

3.3 INSTALLATION

3.3.1 Transition Strip Installation

Install transition strip materials to provide continuity throughout the building envelope. Install materials in accordance with manufacturer's recommendations and the following:

1. Position subsequent sheets of transition strips applied above so that membrane overlaps the membrane sheet below by a minimum of 3 inches, unless greater overlap is recommended by manufacturer. Roll into place with roller.

2. Overlap horizontally adjacent pieces of transition strips a minimum of 3 inches, unless greater overlap is recommended by manufacturer.

Roll seams with roller.

3. Seal around all penetrations with termination mastic, extruded silicone sealant, membrane counterflashing or other procedure in accordance with manufacturer's recommendations.

4. Connect air barrier in exterior wall assembly continuously to the air barrier of the roof, to concrete below-grade structures, to windows, curtain wall, storefront, louvers, exterior doors and other intersection conditions and perform sealing of penetrations, using accessory materials and in accordance with the manufacturer's recommendations.

5. At changes in substrate plane, provide transition material (bead of sealant, mastic, extruded silicone sealant, membrane counterflashing or other material recommended by manufacturer) under membrane to eliminate all sharp 90 degree inside corners and to make a smooth transition from one plane to another.

6. Provide mechanically fastened non-corrosive metal sheet to span gaps in substrate plane and to make a smooth transition from one plane to the other. Membrane shall be continuously supported by substrate.

7. At through-wall flashings, seal exposed top edge of strip with bead of mastic as recommended by manufacturer.

8. At deflection and control joints, provide backup for the membrane to accommodate anticipated movement.

9. At expansion and seismic joints provide transition to the joint assemblies.

10. Apply a bead or trowel coat of mastic along membrane seams at reverse lapped seams, rough cuts, and as recommended by the manufacturer.

11. At end of each working day, seal top edge of membrane to substrate with termination mastic.

12. Do not allow materials to come in contact with chemically incompatible materials.

13. Do not expose membrane to sunlight longer than as recommended by the manufacturer.

3.3.2 Spray Application of Polyurethane

Install materials in accordance with manufacturer's recommendations.

1. Equipment used to spray polyurethane foam shall comply with the manufacturer's recommendations for the specific type of application.

Record equipment settings on the Daily Work Record as per the ABAA Quality Assurance Program. Each proportioner unit shall supply only one spray gun.

2. Apply only when surfaces and environmental conditions are within limits prescribed by the material manufacturer.

3. Apply a " cove " of spray foam at all interior corners and transition membrane details using " picture frame" spray technique and let cool to within 10 degrees of ambient temperature before applying additional

SPF.

4. Apply in consecutive passes as recommended by manufacturer to thickness as indicated on drawings. Passes shall be not less than 1/2 inch unless feathering for tying in to existing installed SPF and not greater than 2 inches. Detail work/thickness, shall be performed in accordance with manufacturer's recommendations.

5. When applying to flexible plastic flashings and self-adhering flashings and membranes do not exceed 1inch thick on the first pass.

If such membranes are " Winter Grade ", do not exceed ½ inch thick.

6. Install within manufacturer's tolerances, but not more than minus 1/4 inch or plus 1/2 inch.

7. Do not install spray polyurethane foam within 3 inches of heat emitting devices such as light fixtures and chimneys.

8. Finished surface of foam insulation to be free of voids and embedded foreign objects.

9. Remove masking materials and over spray from adjacent areas immediately after foam surface has hardened. Ensure cleaning methods do not damage work performed by other sections.

10. Trim, as required, any excess thickness that would interfere with the application of cladding/covering system by other trades.

11. Clean and restore surfaces soiled or damaged by work of the section. Consult with section of work soiled before cleaning to ensure methods used will not damage the work.

12. Complete connections to other components and repair any gaps, holes or other damage using material as recommended by the manufacturer.

13. Care must be taken to avoid installations that result in non-restrained edges of the SPF when applied over self-adhering membranes.

3.4 FIELD QUALITY CONTROL

Installer self-inspection: The installer shall conduct daily inspections and record the results of these inspections on a Daily Work Record in accordance with the ABAA Quality Assurance Program. These Daily Work Records shall be made available upon request.

Owner's Inspection and Testing: Cooperate with Owner's testing agency, if utilized. Allow access to work areas and staging. Notify Owner's testing agency in writing of schedule for Work of this Section to allow sufficient time for testing and inspection. Daily inspection and testing may be required. Do not cover Work of this Section until testing and inspection is accepted.

ABAA Site Inspections: Arrange and pay for site audits by ABAA to verify conformance with the manufacturer's instructions, the ABAA Quality Assurance Program, and this section of the project specification .

1. Audits shall be carried out per ABAA protocol. Forward written inspection reports to the Architect within 3 working days of the receipt of the audit report.

2. If the inspections reveal any defects, promptly remove and replace defective work at no additional expense to the Owner.

3.5 PROTECTING AND CLEANING

Protect air barrier assemblies from damage during application and remainder of construction period, according to manufacturer's written instructions.

1. Coordinate with installation of materials which cover the SPF air barrier system, to ensure exposure period does not exceed that recommended by the air barrier manufacturer.

Clean spillage and soiling from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction and acceptable to the primary material manufacturer.

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