COMH Tech Amendment 0007 - 07 27 19.01_Amended.pdf

CONSOLIDATED OPERATIONS AND MAINTENANCE HANGAR W91236-21-R-2003

Langley Air Force Base

SECTION 07 27 19.01

SELF-ADHERING AIR BARRIERS

05/17

AMENDMENT 19 NOV 21

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.

AIR BARRIER ASSOCIATION OF AMERICA (ABAA)

ABAA Accreditation Accreditation

ABAA QAP Quality Assurance Program

ASTM INTERNATIONAL (ASTM)

ASTM D146/D146M (2004; E 2012; R 2012) Sampling and Testing Bitumen-Saturated Felts and Woven Fabrics for Roofing and Waterproofing

ASTM D412 (2016) Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - Tension

ASTM D570 (1998; E 2010; R 2010) Standard Test Method for Water Absorption of Plastics

ASTM D903 (1998; R 2017) Standard Test Method for Peel or Stripping Strength of Adhesive Bonds

ASTM D1876 (2008; R 2015; E 2015) Standard Test Method for Peel Resistance of Adhesives (T-Peel Test)

ASTM D4263 (1983; R 2018) Standard Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method

ASTM D4541 (2017) Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers

ASTM E84 (20 20) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM E96/E96M (2016) Standard Test Methods for Water Vapor Transmission of Materials

ASTM E154/E154M (2008a; R 2013; E 2013) Water Vapor Retarders Used in Contact with Earth Under

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Concrete Slabs, on Walls, or as Ground Cover

ASTM E283 (2019) Standard Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen

ASTM E331 (2000; R 2016) Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference

ASTM E2178 (2013) Standard Test Method for Air Permeance of Building Materials

ASTM E2357 (2017) Standard Test Method for Determining Air Leakage of Air Barrier Assemblies

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 285 (2012) Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Non-Load-Bearing Wall Assemblies Containing Combustible Components

1.2 RELATED REQUIREMENTS

Coordinate the requirements of Section 07 27 10.00 10 BUILDING AIR BARRIER SYSTEM, Section 07 05 23 PRESSURE TESTING AN AIR BARRIER SYSTEM FOR AIR TIGHTNESS and other building enclosure sections to provide a complete building air barrier system. Submit all materials, components, and assemblies of the air barrier system together as one complete submittal package.

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1.3 SUBMITTALS

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

submittals not having a "G" designation are for Contractor Quality Control approval. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.

"G, AE" code is applied where Architect/Engineer review and approval is required. "G, RO" code is applied where Government, Resident Office review and approval is required. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section

01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Qualifications of Manufacturer ; G, AE

Qualifications of Installer ; G, AE

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SD-02 Shop Drawings

Self-adhering Air and Vapor Barrier ; G, AE

SD-03 Product Data

Self-adhering Air and Vapor Barrier ; G, AE

Self-adhering Sheet Waterproofing ; G, AE

Primers, Adhesives, and Mastics ; G, AE

Safety Data Sheets ; G, AE

Pr e- Appl i ed Sheet Membr ane Wat er pr oof i ng; G, AE

SD-04 Samples

Self-adhering Air and Vapor Barrier Mockup; G, AE

SD-06 Test Reports

Field Peel Adhesion Test ; G, AE

Flame Propagation of Wall Assemblies ; G, AE

Flame Spread and Smoke Developed Index Ratings ; G, AE

Site Inspections and Testing ; G, AE

SD-07 Certificates

Self-adhering Air and Vapor Barrier ; G, AE

Self-adhering Sheet Waterproofing ; G, AE

Qualifications of Manufacturer ; G, AE

Qualifications of Installer ; G, AE

Pr e- Appl i ed Sheet Membr ane Wat er pr oof i ng; G, AE

SD-08 Manufacturer's Instructions

Self-adhering Air and Vapor Barrier ; G, AE

Self-adhering Sheet Waterproofing ; G, AE

Primers, Adhesives, and Mastics ; G, AE

Pr e- Appl i ed Sheet Membr ane Wat er pr oof i ng; G, AE

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1.4 MISCELLANEOUS REQUIREMENTS

For self-adhering air and vapor barrier provide the following:

SECTION 07 27 19.01 Page 3

1.4.1 Shop Drawings

Submit self-adhering air barrier shop drawings showing locations and extent of air barrier assemblies and details of all typical conditions, intersections with other building enclosure assemblies and materials, and membrane counterflashings. Show details for bridging of gaps in construction, treatment of inside and outside corners, expansion joints, methods of attachment of materials covering the self-adhered barrier without compromising the barrier. Indicate how miscellaneous penetrations such as conduit, pipes, electric boxes, brick ties, and similar items will be sealed.

1.4.2 Product Data

Submit manufacturer's technical data indicating compliance with performance and environmental requirements, manufacturer's printed instructions for evaluating, preparing, and treating substrates, temperature and other limitations of installation conditions, safety requirements for installation, and Safety Data Sheets . Indicate flame and smoke spread ratings for all products.

1.4.3 Mockup

Provide a mockup of the self-adhering air barrier system specified. Apply product in an area designated by the Contracting Officer. Apply an area of not less than 54 square feet . Include all components specified as representative of the complete system. Notify the Contracting Officer a minimum of 48 hours prior to the test application. Select a test area representative of conditions to be covered including window or door openings, wall to ceiling transitions, flashings, and penetrations, as applicable.

1.4.4 Test Reports

Submit test reports indicating that field peel-adhesion tests on all materials have been performed and the changes made, if required, in order to achieve successful and lasting adhesion. Submit test reports for flame propagation of wall assemblies tested in accordance with NFPA 285 . Submit test reports for flame spread and smoke developed index ratings of barrier system materials tested in accordance with ASTM E84.

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery

Deliver and store materials in sufficient quantity to allow for uninterrupted flow of work. Inspect materials delivered to the site for damage and store out of weather. Deliver materials to the jobsite in their original unopened packages, clearly marked with the manufacturer's name, brand designation, description of contents, and shelf life of containerized materials. Store and handle to protect from damage.

1.5.2 Storage

Inspect materials delivered to the site for damage; unload and store out of weather in manufacturer's original packaging. Store only in dry locations, not subject to open flames or sparks, and easily accessible for inspection and handling. Protect stored materials from direct sunlight.

Keep materials sealed and separated from absorptive materials, such as

SECTION 07 27 19.01 Page 4 wood and insulation.

1.6 FIELD PEEL ADHESION TEST

Perform a field peel-adhesion test on the construction mockup. Test the self-adhering air barrier for adhesion in accordance with ASTM D4541 using a Type II pull tester except use a disk that is 4 inches in diameter and cut through the membrane to separate the material attached to the dish from the surrounding material. Perform test after curing period in accordance with manufacturer's written recommendations. Record mode of failure and area which failed in accordance with ASTM D4541. Compare adhesion values with the manufacturer's established minimum values for the particular combination of material and substrate. Indicate on the inspection report whether the manufacturer's requirement has been met.

Where the manufacturer has not declared a minimum adhesion value for their product and substrate combination, the inspector must record actual values.

1.7 AIR BARRIER TESTING

Perform air barrier testing in accordance with Section 07 27 10.00 10 BUILDING AIR BARRIER SYSTEM and Section 07 05 23 PRESSURE TESTING AN AIR

BARRIER SYSTEM FOR AIR TIGHTNESS.

1.8 QUALITY ASSURANCE

1.8.1 Qualifications of Manufacturer

Submit documentation verifying that the manufacturer of the self-adhering air barrier is currently accredited by Air Barrier Association of America ( ABAA Accreditation https://www.airbarrier.org/ ).

1.8.2 Qualifications of Installer

Submit documentation verifying that installers of the self-adhering air barrier are currently certified in accordance with the ABAA QAP Quality Assurance Program ( https://www.airbarrier.org/qap/ ).

1.9 PRECONSTRUCTION MEETING

Conduct a preconstruction meeting a minimum of two weeks prior to commencing work specified in this Section. Agenda must include, at a minimum, construction and testing of mockup, 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. Attendance is required by representatives of related trades including covering materials, substrate materials, adjacent materials, and materials and components of the air barrier system.

1.10 ENVIRONMENTAL CONDITIONS

1.10.1 Temperature

Install air barrier within the range of ambient and substrate temperatures as recommended in writing by the air barrier manufacturer. Verify that the surface to receive self-adhering air barrier is dry for a minimum of 48 hours prior to the installation of the barrier. Do not apply air barrier to damp or wet substrates. Do not apply during inclement weather or when ice, frost, surface moisture, or visible dampness is present on

SECTION 07 27 19.01 Page 5 surfaces to be covered, or when precipitation is imminent.

1.10.2 Exposure to Weather and Ultraviolet Light

Protect air barrier products from direct exposure to rain, snow, sunlight, mist, and other extreme weather conditions. Replace, at no additional cost to the government, barrier products that have been exposed to ultraviolet (sun)light longer than allowed by manufacturer's written requirements.

PART 2 PRODUCTS

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2.1 PRODUCT DESCRIPTION

a. Provide Self-Adhering Sheet Waterproofing at foundation walls/footings below grade and as indicated on drawings.

b. Provide self-adhered sheet membrane at all openings and as indicated on drawings.

c. Self-Adhering Barriers to be compatible with building's an air and vapor barrier system to perform as a continuous barrier to air infiltration/exfiltration and water vapor transmission and to act as a liquid water drainage plane flashed to discharge any incidental condensation or water penetration.

d. Pr ovi de Pr e- Appl i ed I nt egr al l y Bonded HDPE Sheet Wat er pr oof i ng Membr ane at el evat or pi t and as i ndi cat ed on dr awi ngs.

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2.2 SHEET WATERPROOFI NG

2.2.1 Pr e- Appl i ed Sheet Membr ane Wat er pr oof i ng

Pr e- Appl i ed I nt egr al l y Bonded HDPE Sheet Wat er pr oof i ng Membr ane f or ver t i cal or hor i zont al appl i cat i on. 1. 2mm ( 0. 046 i n) nomi nal t hi ckness composi t e sheet membr ane consi st i ng of 0. 8 mm ( 0. 030 i n. ) of hi gh densi t y pol yet hyl ene f i l m, a pr essur e- sensi t i ve adhesi ve and a t r af f i cabl e weat her r esi st ant coat i ng. The membr ane shal l be suppl i ed i n a k i ck- out r ol l or i ent at i on and shal l have no r el ease l i ner t o r educe wast e onsi t e. The membr ane shal l f or m an i nt egr al , adhesi ve and per manent bond t o pour ed concr et e t o pr event wat er mi gr at i on at t he i nt er f ace of t he membr ane and st r uct ur al concr et e and shal l i ncl ude dual adhesi ve seam t o compl et e s i de l aps and secur e adj acent sheet s. Pr ovi de membr ane wi t h t he f ol l owi ng physi cal pr oper t i es:

a. Thi ckness ( ASTM D 3767 Met hod A) : 0. 046 i nch. nomi nal .

b Lat er al Wat er Mi gr at i on Resi st ance ( ASTM D 5385 Modi f i ed) : Pass at

231 f eet of hydr ost at i c head pr essur e.

c. Low Temper at ur e Fl exi bi l i t y ( ASTM D 1970) : Unaf f ect ed at - 20° F

d. Resi st ance t o Hydr ost at i c Head ( ASTM D 5385 Modi f i ed) : 231 f eet .

e. El ongat i on ( ASTM D 412 Modi f i ed) : 400% f . Tensi l e St r engt h, f i l m ( ASTM D 412) : 4, 000 psi .

g. Cr ack Cycl i ng at - 9. 4° F, 100 Cycl es ( ASTM C 836) : Unaf f ect ed, Pass

SECTION 07 27 19.01 Page 6

h. Punct ur e Resi st ance ( ASTM E154) : 200 l bs.

i . Peel Adhesi on t o Concr et e ( ASTM D 903 Modi f i ed) : 5. 0 l bs/ i n.

j . Lap Peel Adhesi on ( ASTM D 1876 Modi f i ed) : 8. 0 l bs/ i n.

k. Per meance t o wat er vapor t r ansmi ssi on ( ASTM E 96 Met hod B) : 0. 01 perms.

2.2.2 SELF-ADHERING SHEET WATERPROOFING

A self-adhesive, cold-applied composite sheet consisting of a thickness of 0.056 inch of rubberized asphalt and 0.004 inch of cross-laminated, high density polyethylene film. Provide rubberized asphalt membrane covered with a release sheet, which is removed during installation and no special adhesive or heat shall be required to form laps.

2.2.2.1 Physical Properties

a. Thickness (ASTM D3767 Method A): 0.060 inch nominal

b. Permeance (ASTM E 96, Section 12 – Water Method): <0.1 perms.

c. Tensile Strength, Membrane Die C (ASTM D412): 325 psi minimum.

d. Tensile Strength,Film (ASTM D882): 5,000 psi minimum.

e. Elongation, Ultimate Failure of Rubberized Asphalt (ASTM D412): 300 percent minimum.

f. Puncture Resistance (ASTM E154/E154M): Not less than 40 lbs.

g. Crack Cycling at -25°F, 100 Cycles (ASTM C 836): Unaffected.

h. Lap Shear (ASTM D1002): 20 lbs minimum.

i. Peel Strength (ASTM D903): 9.0 lbs per inch minimum.

j. Puncture Resistance, Membrane (ASTM E154): 50 lbs minimum.

k. Resistance to Hydrostatic Head (ASTM D5385): >230 ft of water.

l. Water Absorption (ASTM D570): 0.1% maximum

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2.3 SELF ADHERING AIR AND VAPOR BARRIER

Provide minimum 0.040 inch thick self-adhering, vapor retarding, air barrier membrane comprised of 0.9 mm (0.036 in) of self-adhesive rubberized asphalt integrally bonded to 0.1 mm (.004 in) of cross-laminated, high-density polyethylene (HDPE) film. Provide membrane in rolls of various widths interleaved with disposable silicone release paper. Self-adhering air barrier must exhibit no visible water leakage when tested in accordance with ASTM E331 and must perform as a liquid water drainage plane flashed to discharge to the exterior any incidental condensation or water penetration. Use regular or low temperature formulation depending on site conditions, within temperature ranges specified by manufacturer. Provide products suitable for use in specified locations.

SECTION 07 27 19.01 Page 7

2.3.1 Physical Properties

a. Air Permeance ( ASTM E2178): In accordance with Section 07 27 10.00 10 BUILDING AIR BARRIER SYSTEM and l ess than 0.004 CFM per sf at 1.57 psf .

b. Air Leakage ( ASTM E2357, ASTM E283): In accordance with Section 07 27 10.00 10 BUILDING AIR BARRIER SYSTEM and Section 07 05 23 PRESSURE TESTING AN AIR BARRIER SYSTEM FOR AIR TIGHTNESS and less than

0.004 CFM per sf at 1.57 psf at one inch .

c. Water Vapor Permeance (ASTM E 96, Method B): less than 0.05 Perms.

d. Tensile Strength ( ASTM D412 die C modified): Not less than 400 psi .

e. Tensile Elongation ( ASTM D412 die C modified): Not less than 200 percent.

f . Puncture Resistance ( ASTM E154/E154M ): Not less than 40 lbs .

g. Tear Resistance Initiation - ASTM D 1004: 7.0 lbs. M.D.

Propagation - ASTM D1938: 4.0 lbs. M.D

h. Pliability ( ASTM D146/D146M): Unaffected at minus 25 degrees F , 0.063 inch mandrel.

i . Lap Adhesion ( ASTM D1876 modified): Not less than 4.0 lbs per inch .

j . Peel Adhesion ( ASTM D903): Not less than 5.0 lbs per inch .

k. Water Vapor Permeance (Vapor Impermeable Air Barrier) ( ASTM E96/E96M, desiccant method A): 0.1 perms or less.

l . Water Absorption ( ASTM D570): Not to exceed 0.1 percent by weight.

m. Flame propagation of wall assemblies ( NFPA 285 ): Pass

n. Surface Burning Characteristics ( ASTM E84):

(1) Flame Spread Index Rating not higher than 75.

(2) Smoke Developed Index Rating not higher than 150.

2.4 PRIMERS, ADHESIVES, AND MASTICS

Provide primers, adhesives, mastics and other accessory materials as recommended in writing by the manufacturer of the self-adhering air barrier for adequate bonding to each type of substrate.

2.5 SHEET METAL FLASHING

Provide as specified in Section 07 60 00 FLASHING AND SHEET METAL.

2.6 JOINT SEALANTS

Provide as specified in Section 07 92 00 JOINT SEALANTS. Verify compatibility with adjacent products that are or will be in contact with one another.

SECTION 07 27 19.01 Page 8

PART 3 EXECUTION

3.1 EXAMINATION

Before installing air barrier, examine substrates, areas, and conditions under which air barrier assemblies will be applied, with Installer present, for compliance with requirements. Ensure 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.

c. Verify substrate is visibly dry and free of moisture. Test for capillary moisture by plastic sheet method in accordance with ASTM D4263 and take suitable measures until substrate passes moisture test.

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

3.2 PREPARATION

Clean, prepare, and treat substrate in accordance with manufacturer's written instructions. Ensure clean, dust-free, and dry substrate for air barrier application.

a. Prime masonry and concrete substrates with conditioning primer.

b. Prime gypsum sheathing an adequate number of coats to achieve required bond, with adequate drying time between coats.

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

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

3.3 INSTALLATION

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3.3.1 Installation of Self-adhering Air and Vapor Barrier

Install materials in accordance with manufacturer's recommendations for each type of Self-Adhering Barrier and Wat er pr oof i ng and the following:

a. Apply primer at rate recommended by manufacturer prior to membrane installation. Allow primer to dry completely before membrane application. Apply as many coats as necessary for proper adhesion.

b. When membrane is properly positioned, press into place and roll membrane with roller immediately after placement.

c. Apply membrane sheets to shed water naturally without interception by a sheet edge, unless that edge is sealed with permanently flexible termination mastic.

SECTION 07 27 19.01 Page 9

d. Position subsequent sheets of membrane applied above so that membrane overlaps the membrane sheet below by a minimum of 2-1/2 inches , unless greater overlap is recommended by manufacturer. Roll into place with roller.

e. Make all side laps a minimum of 2-1/2 inches and all end laps a minimum of 5 inches , unless greater overlap is recommended by manufacturer. Roll seams with roller.

f. Roll membrane to adhere to substrate. Cover corners and joints with two layers of reinforcement by first applying a 12 inch width of membrane centered along the axis. Flash drains and projections with a second ply of membrane for a distance of 6 inches from the drain or projection.

g. Seal around all penetrations through the air barrier resulting from pipes, vents, conduit, electrical fixtures, structural members, or other construction passing through it. Seal with termination mastic, extruded silicone sealant, membrane counterflashing or other sealing methods in accordance with manufacturer's written recommendations.

h. Continuously connect the air barrier between walls, roof, floor and below grade assemblies to form a continuous integrated air barrier system around the entire building enclosure. Extend the air barrier membrane into rough openings such as doors, windows, louvers, and other exterior penetrations. Seal edges of barrier at junctures with rough openings.

i. At changes in substrate plane, provide transition material (e.g. 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.

j. 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. Continuously support membrane with substrate.

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

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

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

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

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

p. Counterflash upper edge of thru-wall flashing and air barrier.

Counter flashing and thru-wall flashing are specified in Section

07 60 00 FLASHING AND SHEET METAL.

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3.4 FIELD QUALITY CONTROL

3.4.1 Site Inspections and Testing

Provide site inspections and testing in accordance with ABAA protocol to verify conformance with the manufacturer's instructions, the ABAA QAP Quality Assurance Program ( https://www.airbarrier.org/qap/ ), Section 07 27 10.00 10 BUILDING AIR BARRIER SYSTEM,, Section 07 05 23 PRESSURE TESTING AN AIR BARRIER SYSTEM FOR AIR TIGHTNESS, and this section.

a. Conduct inspections and testing at 5, 50, and 95 percent completion of this scope of work. Forward written site inspections and testing reports to the Contracting Officer within five working days of the inspection and test being performed.

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

3.5 FIELD PEEL ADHESION TEST

Conduct in accordance with test protocol indicated in Part 1, paragraph

FIELD PEEL ADHESION TEST.

3.6 PROTECTION AND CLEANING

3.6.1 Protection

3.6.1.1 Adjacent Surfaces

Protect exposed adjacent surfaces that could be damaged by primers and adhesives associated with air barrier membrane. Provide protection during application and the remainder of construction in accordance with manufacturer's written instructions.

3.6.1.2 The Air Barrier Assembly

Protect finished portions of the air barrier assembly from damage during ongoing application and throughout the remainder of the construction period in accordance with manufacturer's written instructions. Coordinate timing of installation of materials that will cover the air barrier membrane to ensure the exposure period does not exceed that recommended by the air barrier manufacturer's written installation instructions. Remove and replace, at no additional cost to the government, membrane products that exceed the manufacturer's allowed exposure limits.

3.6.2 Cleaning

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

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