Attachment P - Section 07 22 00 ROOF AND DECK INSULATION.pdf

P131 Communications Center eProjects No.: 1615269 NSA Souda Bay, Greece

SECTION 07 22 00

ROOF AND DECK INSULATION

02/16

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 C208 (2012; R 2017; E 2017; E 2019) Standard Specification for Cellulosic Fiber Insulating Board

ASTM D41/D41M (2011; R 2016) Standard Specification for Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing

ASTM D312 (2000; R 2006) Standard Specification for Asphalt Used in Roofing

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

ASTM D4586/D4586M (2007; E 2012; R 2012) Asphalt Roof Cement, Asbestos-Free

EUROPEAN COMMITTEE FOR STANDARDIZATION (CEN/CENELEC)

EN 206 (2013+A1:2016) Concrete - Specification, performance, production and conformity

EN 12970 (2000) Mastic asphalt for waterproofing - Definitions, requirements and test methods

SIST EN 1928 (2001) Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof waterproofing - Determination of watertightness

INTERNATIONAL CODE COUNCIL (ICC)

ICC IBC (2018) International Building Code

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 4898 (2018) Rigid cellular plastics -- Thermal insulation products for buildings -- Specifications

ISO 8145 (1994) Thermal insulation -- Mineral wool board for overdeck insulation of roofs --

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Specification

ISO 9705-1 (2016) Reaction to fire tests -- Room corner test for wall and ceiling lining products -- Part 1: Test method for a small room configuration

ISO 11600 (2002) Building construction -- Jointing products -- Classification and requirements for sealants

ISO 16000-9 (2006) Indoor air — Part 9: Determination of the emission of volatile organic compounds from building products and furnishing — Emission test chamber method

ISO 17749 (2018) Thermal insulation products — Sheep wool mat and board — Specification

SCIENTIFIC CERTIFICATION SYSTEMS (SCS)

SCS SCS Global Services (SCS) Indoor Advantage

UNDERWRITERS LABORATORIES (UL)

UL 2818 (2013) GREENGUARD Certification Program For Chemical Emissions For Building Materials, Finishes And Furnishings

1.2 SUBMITTALS

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

submittals not having a "G" designation are for Contractor Quality Control approval. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Insulation Board Layout and Attachment; G

SD-03 Product Data

Insulation; G

Fasteners; G

Recycled Content For Insulation; S

SD-06 Test Reports

Flame Spread Rating; G

SD-07 Certificates

Installer Qualifications; G

Indoor Air Quality For Insulation; S

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SD-08 Manufacturer's Instructions

Nails and Fasteners; G

Roof Insulation; G

1.3 SHOP DRAWINGS

Submit insulation board layout and attachment indicating methods of attachment and spacing, transitions, tapered components, thicknesses of materials, and closure and termination conditions. Show locations of interface with, and slope to, roof drains. Show location and spacing of wood nailers required for securing of insulation and backnailing of roofing felts.

1.4 PRODUCT DATA

Include data for material descriptions, recommendations for product shelf life, requirements for coatings, and precautions for flammability and toxicity. Include data to verify compatibility of sealants with insulation.

1.5 MANUFACTURER'S INSTRUCTIONS

Include field of roof and perimeter attachment requirements.

Provide a complete description of installation sequencing for each phase of the roofing system. Include weatherproofing procedures.

1.6 QUALITY CONTROL

Provide certification of installer qualifications from the insulation manufacturer confirming the specific installer has the required qualifications for installing the specific roof insulation system(s) indicated.

Provide certificates of compliance for felt materials.

1.7 EUROPEAN ORGANISATION FOR TECHNICAL ASSESSMENT (EOTA) REQUIREMENTS

Provide fastening patterns in accordance with the wind uplift pressures as indicated on the Drawings.

1.8 FIRE PERFORMANCE REQUIREMENTS

1.8.1 Insulation in Roof Systems

Roof insulation to have a flame spread rating of 75 or less when tested in accordance with ISO 9705-1 .

1.8.2 Fire Resistance Ratings for Roofs

Provide in accordance with ICC IBC Chapter 7 and Table 721.1(3) Min Fire and Smoke Protection For Floor and Roof Systems.

1.9 CERTIFICATIONS

Provide products certified to meet indoor air quality requirements by

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UL 2818 (Greenguard) Gold or ISO 16000-9 , SCS Global Services Indoor Advantage Gold or provide certification by other third-party programs.

Provide current product certification documentation from certification body.

1.10 DELIVERY, STORAGE, AND HANDLING

1.10.1 Delivery

Deliver materials to the project site in manufacturer's unopened and undamaged standard commercial containers bearing the following legible information:

a. Name of manufacturer

b. Brand designation

c. Specification number, type, and class, as applicable, where materials are covered by a referenced specification

Deliver materials in sufficient quantity to allow continuity of the work.

1.10.2 Storage and Handling

Store and handle materials in accordance with manufacturer's printed instructions. Protect from damage, exposure to open flame or other ignition sources, wetting, condensation, and moisture absorption. Keep materials wrapped and separated from off-gassing materials (such as drying paints and adhesives). Do not use materials that have visible moisture or biological growth. Store in an enclosed building or trailer that provides a dry, adequately ventilated environment. Replace damaged material with new material.

1.11 ENVIRONMENTAL CONDITIONS

Do not install roof insulation during inclement weather or when air temperature is below 4 degrees C and interior humidity is 45 percent or greater, or when there is visible ice, frost, or moisture on the roof deck.

1.12 PROTECTION

1.12.1 Completed Work

Cover completed work with cover board for the duration of construction.

Avoid traffic on completed work particularly when ambient temperature is above 27 degrees C. Replace crushed or damaged insulation prior to roof surface installation.

PART 2 PRODUCTS

2.1 INSULATION

2.1.1 Insulation Types

Provide one, or an assembly of a maximum of three, of the following roof insulation materials. Provide roof insulation that is compatible with attachment methods for the specified insulation and roof membrane.

a. Polystyrene Board: In accordance with ISO 4898 .

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ASTM C208 Type II, Grade 1 or 2 or ISO 17749 , and ISO 8145 , roof insulating board, treated with sizing, wax or bituminous impregnation.

Limit bituminous impregnation to 4 percent by weight when used over steel decks. Maximum board size: 1.2 meters by 1.2 meters.

2.1.2 Recycled Materials

Provide thermal insulation materials containing recycled content. Unless specified otherwise, the minimum required recycled content for listed materials are:

Plastic or Plastic/Rubber composite: 90 percent recovered content

Provide data identifying percentage of recycled content for insulation.

2.1.3 Indoor Air Quality

Provide certification of indoor air quality for insulation.

2.1.4 Insulation Thickness

As necessary to provide the thermal resistance (R-value) indicated for average thickness of tapered system. Base calculation on the R-value for aged insulation.

2.1.5 Tapered Roof Insulation

One layer of the tapered roof insulation assembly must be factory tapered to a slope as indicated on the Drawings. Factory fabricate mitered joints from two diagonally cut boards or one board shaped to provide required slopes.

2.1.6 Cants and Tapered Edge Strips

Provide preformed cants and tapered edge strips of the same material as the roof insulation. When unavailable, provide pressure-preservative treated wood, wood fiberboard, or rigid perlite board cants and edge strips as recommended by the roofing manufacturer for the specific application, unless otherwise indicated. Face of cant strips to incline at 45 degrees with a minimum vertical height of 102 mm. Taper edge strips at a rate of 38 mm per meter down to approximately 3.2 mm thick.

2.2 BITUMENS

2.2.1 Asphalt Primer

Provide in accordance with ASTM D41/D41M or SIST EN 1928 .

2.2.2 Asphalt

Provide in accordance with ASTM D312, Type III or IV or ISO 11600 .

Asphalt flash point, finished blowing temperature, and equiviscous temperature (EVT) for mop and mechanical spreader application must be indicated on each container.

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2.2.3 Asphalt Roof Cement

Provide in accordance with ASTM D4586/D4586M , Type I, for horizontal surfaces and surfaces sloped from 0 by 76.2 mm per meter or EN 12970 .

Type II for vertical and surfaces sloped more than 76.2 mm per meter.

2.3 FASTENERS

Provide flush-driven fasteners through flat round or hexagonal steel or plastic plates. Provide zinc-coated steel plates, flat round not less than 35 mm diameter, hexagonal not less than 0.4 mm. Provide high-density plastic plates, molded thermoplastic with smooth top surface, reinforcing ribs and not less than 76.2 mm in diameter. Fully recess fastener head into plastic plate after it is driven. Form plates to prevent dishing.

Do not use bell or cup shaped plates. Provide fasteners in accordance with insulation manufacturer's recommendations for holding power when driven and in accordance to European Organisation for Technical Assessment (EOTA) requirements.

2.3.1 Fasteners for Poured Concrete Decks

Approved hardened fasteners or screws to penetrate deck at least 25 mm but not more than 38 mm, in accordance with European Organisation for Technical Assessment (EOTA) requirements.

2.4 WOOD NAILERS

Pressure-preservative treated as specified in Section 06 10 00 ROUGH

CARPENTRY.

PART 3 EXECUTION

3.1 EXAMINATION AND PREPARATION

3.1.1 Surface Inspection

Ensure surfaces are clean, smooth, and dry prior to application. Check roof deck surfaces, including surfaces sloped to roof drains and outlets, for defects before starting work.

The Contractor must inspect and approve the surfaces immediately before starting installation. Prior to installing insulation, perform the following:

a. Examine precast concrete decks to ensure that joints between precast units are properly grouted and leveled to provide suitable surfaces for installation of insulation.

b. In the presence of the Contracting Officer perform the following surface dryness test on concrete substrates:

(1) Foaming: When poured on the deck, one pint of asphalt when heated in the range of 176 to 204 degrees C, does not foam upon contact.

(2) Strippability: After asphalt used in the foaming test application has cooled to ambient temperatures, test coating for adherence.

Should a portion of the sample be readily stripped clean from surface, do not consider surface to be dry and do not start application. Should rain occur during application, stop work and

SECTION 07 22 00 Page 6 do not resume until surface has been re-tested by method above and found dry.

c. Prior to installing any roof system on a concrete deck, moisture test the deck in accordance with ASTM D4263 or EN 206 . The deck is acceptable for roof system application when there is no visible moisture on underside of plastic sheet after 24 hours.

3.1.2 Surface Preparation

Correct defects and inaccuracies in roof deck surface to eliminate poor drainage from hollow or low spots, perform the following:

a. Provide wood nailers of the same thickness as the insulation at edges, curbs, walls, and roof openings for securing of cant strips, gravel stops, and flashing flanges. Space nailers in accordance with approved shop drawings.

b. Solidly apply asphalt primer to poured concrete decks at the rate of

3.8 liters per 9.3 square meters of roof surface. Allow primer to dry thoroughly.

3.2 INSULATION INSTALLATION

Apply insulation in two layers with staggered joints when total required thickness of insulation exceeds 13 mm. Lay insulation so that continuous longitudinal joints are perpendicular to direction of roofing and end joints of each course are staggered with those of adjoining courses. When using multiple layers of insulation, provide joints of each succeeding layer that are parallel and offset in both directions with respect to the layer below. Keep insulation 13 mm clear of vertical surfaces penetrating and projecting from roof surface. Verify required slopes to each roof drain.

3.2.1 Installation Using Asphalt

Firmly embed each layer in solid asphalt mopping; mop only sufficient area to provide complete embedment of one board at a time. Provide 10 to 18 kgs of asphalt per 10 square meters of roof deck for each layer of insulation. Apply asphalt when temperature is within plus or minus 15 degrees C of EVT. Do not heat asphalt above asphalt's FBT or 275 degrees C, whichever is less, for longer than 4 consecutive hours. Use thermometers to check temperatures during heating and application.

3.2.2 Installation of Protection for Asphalt Work

Before starting asphalt work, protect surrounding areas and surfaces from spillage and migration of asphalt onto other work. Provide non-combustible protective coverings at surfaces adjacent to hoists and kettles. Lap protective coverings at least 150 mm, secure against wind, and vent to prevent collection of moisture on covered surfaces. Keep protective coverings in place for the duration of asphalt work.

3.2.3 Installation Using Only Mechanical Fasteners

Secure total thickness of insulation with penetrating type fasteners.

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3.2.4 Cant Strips

Where indicated, provide cant strips at intersections of roof with walls, parapets, and curbs extending above roof. Wood cant strips must bear on and be anchored to wood blocking. Fit cant strips flush to vertical surfaces. Where possible, nail cant strips to adjoining surfaces. Where cant strips are installed against non-nailable materials, install in heavy mopping of asphalt or set in a heavy coating of asphalt roof cement an approved adhesive.

3.2.5 Tapered Edge Strips

Where indicated, provide edge strips in the right angle formed by the juncture of roof and wood nailing strips that extend above the level of the roof. Install edge strips flush to vertical surfaces of wood nailing strips. Where possible, nail edge strips to adjoining surfaces. Where installed against non-nailable materials, install in a heavy mopping of asphalt or set in a heavy coating of asphalt roof cement.

3.3 PROTECTION

3.3.1 Protection of Applied Insulation

Completely cover each day's installation of insulation with finished roofingon same day. Phased construction is not permitted. Protect open spaces between insulation and parapets or other walls and spaces at curbs until permanent roofing and flashing are applied. Storing, walking, wheeling, or trucking directly on insulation or on roofed surfaces is not permitted. Provide smooth, clean board or plank walkways, runways, and platforms near supports, as necessary, to distribute weight in accordance with indicated live load limits of roof construction. Protect exposed edges of insulation with cutoffs at the end of each work day or whenever precipitation is imminent. Cutoffs must be two layers of bituminous-saturated felt set in plastic bituminous cement or single ply set in roof cement. Fill all profile voids in cutoffs to prevent trapping moisture below the membrane. Remove cutoffs when work resumes.

3.3.2 Damaged Work and Materials

Restore work and materials that become damaged during construction to original condition or replace with new materials.

3.4 INSPECTION

Establish and maintain inspection procedures to assure compliance of the installed roof insulation with contract requirements. Remove, replace, correct in an approved manner, any work found not in compliance. Quality control must include, but is not limited to, the following:

a. Observation of environmental conditions; number and skill level of insulation workers; start and end time of work.

b. Verification of proper storage and handling of insulation materials before, during, and after installation .

c. Inspection of mechanical fasteners; type, number, length, and spacing.

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e. Coordination with other materials, cants, sleepers, and nailing strips.

e. Inspection of insulation joint orientation and laps between layers, joint width and bearing of edges of insulation on deck.

f. Installation of cutoffs and proper joining of work on subsequent days.

g. Continuation of complete roofing system installation to cover insulation installed same day.

h. Verification of required slope to each roof drain.

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2.4 WOOD NAILERS

3.4 INSPECTION