SECTION 07533

ELASTOMERIC SHEET ROOFING - MECHANICALLY ATTACHED -CONVENTIONAL

PART 1 GENERAL

SECTION INCLUDES

[Sheathing over metal deck surface] [and] [vapor retarder].

Insulation, mechanically attached membrane roofing, base flashings, roofing membrane expansion joints [, cant strips] [, ballast cover] [and counterflashings].

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [_____-__________]: Placement of strip reglet devices.

PRODUCTS INSTALLED BUT NOT FURNISHED IN THIS SECTION

[Section 05311 - Steel Roof Deck: Supply of acoustical insulation for deck flutes.]

Section [______-____________]: [In-situ flashing devices] [Special coated metal counterflashings].

RELATED SECTIONS

Section [______-____________]:	Roof deck substrate.

Section 06114 - Wood Blocking and Curbing: Wood nailers [and cant strips].

[Section 07565 - Preparation for Re-Roofing.]

Section 07620 - Sheet Metal Flashing and Trim: Counterflashing and [________].

Section 07710 - Prefabricated Roof Specialties: Counterflashing and [________].

Section 07724 - Roof Hatches: Counterflashing and [________].

Section 07810 - Plastic Skylights: Skylight frame [and integral curb]: Counterflashing and [________].

Section [08952 - Translucent Panel System] [08960 - Sloped Glazing]: Counterflashing and [________].

Section 15430 - Plumbing Specialties: Roof [drains] [sumps] [hoppers] [________].

Section [______-____________]: Prefabricated curb for mechanical equipment.

Section [_____-__________]: Lightning protection.

REFERENCES

ANSI/ASTM C707 - Gypsum Board Substrate for Floor or Roof Assemblies.

ASTM C177 - Test Method for Steady-State thermal Transmission Properties by Means of the Guarded Hot Plate.

ASTM C578 - Preformed, Cellular Polystyrene Thermal Insulation.

ASTM C728 - Perlite Thermal Insulation Board.

ANSI/ASTM D412 - Rubber Properties in Tension.

ANSI/ASTM D746 - Brittleness Temperature of Plastics and Elastomeric by Impact.

ASTM D624 - Rubber Property - Tear Resistance.

ASTM D822 - Practice for Operating Light and Water-Exposure Apparatus (Carbon-Arc) Type for Testing Paint, Varnish, Lacquer, and Related Products.

ASTM D1004 - Initial Tear Resistance of Plastic Film and Sheeting.

ASTM D2240 - Rubber Property - Durometer Hardness.

ASTM E96 - Water Vapor Transmission of Materials.

Factory Mutual (FM) Engineering Corporation - Roof Assembly Classifications.

FS HH-I-526 - Insulation Board, Thermal (Mineral Fiber).

FS HH-I-529 - Insulation Board, Thermal (Mineral Aggregate).

FS HH-I-530 - Insulation Board, Thermal (Urethane).

FS HH-I-551 - Insulation Block and Boards, Thermal (Cellular Glass).

FS LLL-I-535 - Insulation Board, Thermal (Cellulosic Fiber).

National Roofing Contractors Association (NRCA) - Roofing and Waterproofing Manual.

SPRI - Wind Design Guide for Ballasted Single Ply Roofing Systems.

Underwriters Laboratories (UL) - Fire Hazard Classifications.

SYSTEM DESCRIPTION

Elastomeric Sheet Membrane Conventional Roofing System: One ply membrane system with [vapor retarder,] insulation, mechanically attached membrane and [ballast cover] [surface color coated finish].

NRCA Specification Plate: [________________].

Criteria for Ballasting Membrane System:	SPRI - Wind Design Guide for Ballasted Single Ply Roofing Systems System [1] [2] [3], Exposure [E.] [P.]

SUBMITTALS

Submit under provisions of Section [01300] [________].

Shop Drawings: Indicate [setting plan for tapered insulation,] [joint or termination detail conditions,] [conditions of interface with other materials] [paver ballast cover pattern].

Product Data: Provide characteristics on membrane materials, flashing materials, insulation [, vapor retarders] [, pavers] [, colored coating] and [________].

Samples:	Submit [two] [_______], [____x____] inch ([____x____] mm) in size illustrating [insulation] [, paver] [, colored coating] [and] [________].

Manufacturer's Installation Instructions: Indicate special precautions required for seaming the membrane [and applying colored coating].

Manufacturer's Certificate: Certify that [products] [________] meet or exceed [specified requirements] [___________________].

Manufacturer's Field Reports: Submit under provisions of Section [01400] [________].

Reports:	Indicate procedures followed, ambient temperatures, humidity, wind velocity during application, [and] [________________].

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this section with [three] [_______] years [documented] experience.

Applicator: Company specializing in performing the work of this section [with [____] years [documented] experience] [and] [approved by system manufacturer].

Work of this section to conform to [NRCA Roofing and Waterproofing Manual] [manufacturer's instructions]

[________].

REGULATORY REQUIREMENTS

Conform to [applicable] [________] code for roof assembly fire hazard requirements.

Underwriters Laboratories, Inc. (UL): Class [A] [____] Fire Hazard Classification.

Factory Mutual Engineering Corporation (FM):	Roof Assembly Classification, of Class [1] [____] Construction, wind uplift requirement of [I60] [I90], in accordance with FM Construction Bulletin 1-28.

MOCKUP

Provide mockup of roof membrane system and associated components and accessories under provisions of Section [01400.] [________.]

Mockup Size:	[10 x 10] [________] feet ([3 x 3] [________] m), [including vapor retarder,] insulation, [ballast cover] [colored coating], and typical base and counter flashings; at location designated.

Mockup may [not] remain as part of the Work.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing work of this section, under provisions of Section [01039.] [________.]

Review installation procedures and coordination required with related Work.

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Deliver products in manufacturer's original containers, dry, undamaged, seals and labels intact.

Store products in weather protected environment, clear of ground and moisture.

ENVIRONMENTAL REQUIREMENTS

Do not apply roofing membrane during [inclement weather] [ambient temperatures below [____] degrees F ([____] degrees C) or above [____] degrees F ([____] degrees C)].

Do not apply roofing membrane to damp or frozen deck surface.

Do not expose materials vulnerable to water or sun damage in quantities greater than can be weatherproofed during same day.

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate the work with the installation of associated metal flashings, as the work of this section proceeds.

WARRANTY

Provide [two] [____] year warranty under provisions of Section [01700.] [________.]

Warranty: Cover damage [to building] resulting from failure to prevent penetration of water.

PART 2 PRODUCTS

MANUFACTURERS - MEMBRANE MATERIAL

[__________________________________] System [_________].

Other acceptable manufacturers offering equivalent products.

[______________________________] System [_________].

[______________________________] System [_________].

[______________________________] System [_________].

Substitutions: Under provisions of Section [01600.] [________.]

MEMBRANE AND ASSOCIATED MATERIALS

Membrane: [EPDM] [PVC] [Neoprene] [CPE] [CSPE] [PIB] [Composite lamination of [________] and [________] materials]; [____] inch ([____] mm) thick, [____] inch ([____] mm) wide roll; [________] color [as selected]; conforming to the following criteria:

Properties_________	Test_________	Results

Tensile Strength:	ANSI/ASTM D412	[________]

Elongation:	ANSI/ASTM D412	[________]

Hardness - Shore A:	ASTM D2240	[________]

Tear Strength:	ASTM [D624] [D1004] [________]

Water Absorption:	[________]	[________]

Moisture Vapor Perms:	ASTM E96	[________]

Exposure:	ASTM D822	[________]

Low Temperature	ANSI/ASTM D746	[________]

Brittleness:

Seaming Materials: [As recommended by membrane manufacturer] [________].

[Protective Coating:	[Neoprene/hypalon] [________], [with aluminum powder concentrate]; finish coat of [________] color [as selected].]

MEMBRANE FASTENERS

Battens: [________________].

Disc Washers and Screws: [________________].

SUBSTRATE COVERING MATERIALS

Gypsum Sheathing: [ANSI/ASTM C707;] [1/2] [____] inch ([12.7] [____] mm) thick; uncoated face, fire rated.

[Fire Resistant] Sheet Vapor Retarder: Conforming to [UL] [FM] requirements; [reinforced asphalt/kraft paper laminate] [non-bituminous foil and fibrous mesh type] [plastic sheet]; including compatible fire retarder adhesive, [________] manufactured by [________________]

MANUFACTURERS - INSULATION

[________________________________] Product [_________].

[________________________________] Product [_________].

[________________________________] Product [_________].

Substitutions: Under provisions of Section [01600] [________].

INSULATION

Insulation: [FS LLL-I-535, Class C,] Cellulose fiber board, with the following characteristics:

Board Density:	[____] lb/cu ft ([____] kg/cu m)

Board Size:	[__ x __] inch ([__ x __] mm)

Board Thickness:	[____] inches ([____] mm)

Thermal Conductivity:	K factor of [0.36] [____] (KSI

factor of [0.62] [____]) as

determined by ASTM C177.

Board Edges:	[square] [ship lapped].

****** [OR] ******

Insulation: [FS HH-I-526;] Glass fiber rigid board; top surface coated with 28 lb/square (137 kg/100 sq m) asphalt and Kraft paper, with the following characteristics:

Board Density:	[____] lb/cu ft ([____] kg/cu m)

Board Size:	[__ x __] inch ([__ x __] mm)

Board Thickness:	[____] inches ([____] mm)

Thermal Conductivity:	K factor of [0.36] [____] (KSI

factor of [0.62] [____]) as

determined by ASTM C177.

Board Edges:	[square] [ship lapped].

****** [OR] ******

Insulation: [FS HH-I-530, Type [I] [II], Class 2;] [Urethane] [Polyisocyanurate] rigid board, both faces surfaced with polyethylene treated kraft paper, with the following characteristics:

Board Density:	[____] lb/cu ft ([____] kg/cu m)

Board Size:	[__ x __] inch ([__ x __] mm)

Board Thickness:	[____] inches ([____] mm)

Thermal Conductivity:	K factor of [0.36] [____] (KSI factor of [0.62] [____]) as determined by ASTM C177, aged [12] [____] months at 75 degrees F.

Board Edges:	[square] [ship lapped].

****** [OR] ******

Insulation: [ASTM C728;] [FS HH-I-529;] Expanded perlite mineral aggregate board; with the following characteristics:

Board Density:	[____] lb/cu ft ([____] kg/cu m)

Board Size:	[__ x __] inch ([__ x __] mm)

Board Thickness:	[____] inches ([____] mm)

Thermal Conductivity:	K factor of [0.36] [____] (KSI

factor of [0.62] [____]) as

determined by ASTM C177.

Board Edges:	[square] [ship lapped].

****** [OR] ******

Insulation: [FS HH-I-551;] Cellular glass board; with the following characteristics:

Board Density:	[____] lb/cu ft ([____] kg/cu m)

Board Size:	[__ x __] inch ([__ x __] mm)

Board Thickness:	[____] inches ([____] mm)

Thermal Conductivity:	K factor of [0.36] [____] (KSI

factor of [0.62] [____]) as

determined by ASTM C177.

Board Edges:	[square] [ship lapped].

****** [OR] ******

Insulation: [ASTM C578 Type VI,] extruded polystyrene board with natural skin surfaces; drainage channels one face, [________] manufactured by [________________], with the following characteristics:

Board Density:	[____] lb/cu ft ([____] kg/cu m)

Board Size:	[__ x __] inch ([__ x __] mm)

Board Thickness:	[____] inches ([____] mm)

Thermal Conductivity:	K factor of [0.20] [____] (KSI factor of [0.35] [____]) as determined by ASTM C177.

Board Edges:	square.

****** [OR] ******

Insulation: Composite insulation of [sandwich] [two material] lamination of top [and bottom] layer of [________] and [middle] [bottom] layer of [________________] factory bonded; with the following characteristics:

Board Density:	[____] lb/cu ft ([____] kg/cu m)

Board Size:	[__ x __] inch ([__ x __] mm)

Board Thickness:	[____] inches ([____] mm)

Thermal Conductivity:	K factor of [0.36] [____] (KSI factor of [0.62] [____]) as determined by ASTM C177.

Board Edges:	[square] [ship lapped].

Separation Sheet: [________________].

Cushion Sheet:	[_______________]

FLASHINGS

Flexible Flashings: [Same material as membrane] [EPDM] [Butyl] [Neoprene] [________]; [black] [white] color; [________] manufactured by [________________].

***** [OR] *****

Flexible Flashings: [Same material as membrane] [EPDM] [Butyl] [Neoprene] [________]; conforming to the following:

Thickness:	[____] mil ([____] mm).

Maximum Perm Rate:	[____].

Tensile Strength: [1,200] [____] psi ([8.3] [____] MPa).

Elasticity: 50 percent with full recovery without set.

Color:	[black] [white] [________].

Counterflashings: [____] metal, as specified in Section [07620.] [________.]

Prefabricated Roof Specialties: As specified in Section [07710.] [________.]

****** [OR] ******

Prefabricated Control or Expansion Joint Flashing: Sheet [butyl] [________] over close cell foam backing seamed to metal flanges; [________] manufactured by [_____________].

***** [OR] *****

Control or Expansion Joint Flashing:	[Sheet [butyl] [________], metal counter flashings and [wood] [________] materials, as detailed.

***** [OR] *****

Control or Expansion Joint Flashing:	[Sheet [butyl] [________], metal counter flashings and [wood] [________] materials, in accordance with NRCA Construction Details [____], [____] and [____].

ACCESSORIES

Fiber Cant and Tapered Edge Strips: Asphalt impregnated wood fiberboard, preformed to [45 degree angle] [tapered edge strip] [configuration as detailed].

****** [OR] ******

Wood Cant Strips: Specified in Section [06114.] [________.]

[Sheathing Adhesive:	Non-combustible type, for adhering gypsum sheathing to metal deck.]

Sheathing Joint Tape: [Paper] [Heat resistant] [________] type.

[Insulation Adhesive: As recommended by insulation manufacturer.]

Insulation Joint Tape: Asphalt treated glass fiber reinforced; [6] [____] inches ([150] [____] mm) wide; self adhering.

Roofing Nails: Galvanized [, hot dipped] or non-ferrous type, size as required to suit application.

Insulation Fasteners: Appropriate for purpose intended and approved by [Factory Mutual] [and] [system manufacturer]; length required for thickness of material [with metal washers]; [________] manufactured by [________________].

Sealants: [As recommended by membrane manufacturer] [________________].

Strip Reglet Devices: [Galvanized steel] [Extruded plastic] [________________]; maximum possible lengths per location, with attachment flanges.

BALLAST COVER

[Place cushion sheet over sheet membrane prior to placing ballast.]

Aggregate Ballast: Apply dry at [1,000] [____] lb/square ([490] [____] kg/10 sq m), evenly distributed.

Evenly distribute aggregate cover.

Paver Ballast: Place pavers [at roof areas indicated] [________________].

Install pavers [directly on insulation] [on leveling pads]. Provide approximately [1/4] [3/8] [____] inch ([6] [9] [____] mm) space between pavers to permit surface water drainage.

Paver System: [________] manufactured by [___________].

PART 3 EXECUTION

EXAMINATION

Verify that surfaces and site conditions are ready to receive work.

Verify deck is supported and secure.

Verify deck is clean and smooth, free of depressions, waves, or projections, properly sloped to [drains] [valleys,] [or] [eaves].

Verify deck surfaces are dry and free of snow or ice. [Confirm dry deck by moisture meter with [12] [____] percent moisture maximum.]

[Verify adjacent precast concrete roof members do not vary more than 1/4 inch (6 mm) in height.] [Verify grout keys are filled flush.]

Verify roof openings, curbs, pipes, sleeves, ducts, and vents through roof are solidly set, and [wood cant strips] [wood nailing strips] [and reglets] are in place.

PREPARATION - WOOD DECK

Verify flatness and tight joints of wood decking.

Seal joints of decking with tape.

Fill knot holes with latex filler.

****** [OR] ******

PREPARATION - CONCRETE DECK

Fill surface honeycomb and variations with latex filler.

****** [OR] ******

PREPARATION - METAL DECK

[Install preformed sound absorbing glass fiber insulation strips supplied by Section 05311, in acoustic deck flutes; in accordance with manufacturer's instructions.]

Install gypsum sheathing on metal deck [using continuous mopping of adhesive on each flute] [________________].

Lay with long side at right angle to flutes; stagger end joints; provide support at ends.

Cut sheathing cleanly and accurately at roof breaks and protrusions to provide smooth surface. Tape joints.

Mechanically fasten sheathing at full roof area using [6] [8] [____] fasteners with washers per sheathing board.

****** [OR] ******

Mechanically fasten sheathing at roof perimeter to a distance of [4] [____] ft ([1.5] [____] m) in from edges using [6] [8] [____] fasteners with washers per board.

****** [OR] ******

Mechanically fasten sheathing to roof deck, in accordance with [Factory Mutual] [manufacturer's instructions] [________].

VAPOR RETARDER APPLICATION

Apply vapor retarder to [deck] [sheathing] surface with adhesive in accordance with manufacturer's instructions.

Extend vapor retarder under cant strips and blocking to deck edge.

Lap [flexible flashing] [________] over vapor [and air] barrier of wall construction to provide continuity of vapor [and air] barrier seal. Coordinate with Section [07190] [________].

INSULATION APPLICATION

[Ensure vapor retarder is clean and dry.]

Apply adhesive to deck in accordance with [adhesive] [and] insulation] manufacturer's instructions. Embed insulation into adhesive with full contact.

Apply adhesive to the top surface of insulation.	Embed the second layer of insulation into adhesive, with joints staggered [minimum [6] [____] inch ([150] [____] mm)] from joints of first layer.

[Place [the constant thickness first layer and] the tapered thickness insulation [second layer] to the required slope pattern in accordance with manufacturer's instructions.]

Minimum Total Insulation Thickness: [[____] inch ([____] mm)] [As required to achieve an insulation R value of [____] (RSI value of [____])] [To an average R value of [____] (RSI value of [____]) for tapered insulation].

Place boards [parallel] [perpendicular] to deck flutes with edges over flute surface for bearing support.

Lay boards with edges in moderate contact without forcing. Cut insulation to fit neatly to perimeter blocking and around penetrations through roof.

[Lay tapered boards] [Cut boards to slope] for a distance of [18] [24] [____] inches ([450] [600] [____] mm) back from roof drains for positive drainage.

Apply no more insulation than can be covered with membrane in same day.

Tape joints of insulation in accordance with insulation manufacturer's instructions.

****** [OR] ******

INSULATION APPLICATION

[Ensure vapor retarder is clean and dry.]

Mechanically fasten insulation to deck in accordance with insulation manufacturer's instructions.

Place the second layer of insulation with joints staggered [minimum [6] [____] inch ([150] [____] mm)] from joints of first layer.

Mechanically fasten boards [for distance of [____] inch ([____] mm) from roof edge] [over roof surface].

****** [OR] ******

Place [____] fasteners per [insulation board] [[____] sq ft ([____] sq m)].

[Place [the constant thickness first layer and] the tapered thickness insulation [second layer] to the required slope pattern in accordance with manufacturer's instructions.]

Minimum Total Insulation Thickness: [[____] inch ([____] mm)] [As required to achieve an insulation R value of [____] (RSI value of [____])] [To an average R value of [____] (RSI value of [____]) for tapered insulation].

Place boards [parallel] [perpendicular] to deck flutes

with edges over flute surface for bearing support.

Lay boards with edges in moderate contact without forcing. Cut insulation to fit neatly to perimeter blocking and around penetrations through roof.

[Lay tapered boards] [Cut boards to slope] for a distance of [18] [24] [____] inches ([450] [600] [____] mm) back from roof drains for positive drainage.

Apply no more insulation than can be covered with membrane in same day.

Tape joints of insulation in accordance with insulation manufacturer's instructions.

MEMBRANE APPLICATION

Apply membrane and mechanical attachment devices in accordance with manufacturer's instructions.

Install mechanical fasteners at [________________].

Roll out membrane, free from wrinkles or tears. Place sheet into place without stretching.

Overlap edges and ends and seal by [solvent] welding] [heat welding] [contact tape] [contact adhesive], minimum [3] [____] inches ([75] [____] mm). Seal permanently waterproof. [Apply uniform bead of sealant to joint edge.]

[Shingle joints on sloped substrate in direction of drainage] [Apply joint tape and seal].

Extend membrane up cant strips and minimum of [6] [____] inches ([150] [____] mm) onto vertical surfaces.

Seal membrane around roof penetrations.

FLASHINGS AND ACCESSORIES

Apply flexible flashings to seal membrane to vertical elements.

Secure to [nailing strips at 4 inches (100 mm) oc] [and] [reglets].

Install prefabricated roofing [control] [and] [expansion] joints to isolate roof into areas [as indicated] [in accordance with manufacturer's instructions].

***** [OR] *****

Fabricate roofing [control] [and] [expansion] joints to isolate roof into areas as indicated.

Coordinate installation of roof [drains] [sumps] [________] and related flashings.

Seal flashings and flanges of items penetrating membrane.

[Install walkway pads.]

PROTECTIVE COATING

Apply coating to exposed to view membrane materials in accordance with manufacturer's instructions.

***** [OR] *****

Apply coating to exposed to view membrane materials to the following requirements:

Prime membrane.

Apply [____] coats at rate of [____] to minimum thickness of [____] mils ([____] mm).

Finish with colored coating.

***** [OR] *****

BALLAST INSTALLATION

[Place cushion sheet over sheet membrane prrior to placing ballast.]

Aggregate Ballast: Apply dry at [1,000] [____] lb/square ([490] [____] kg/10 sq m), evenly distributed.

***** [OR] *****

Paver Ballast: Place pavers [at roof areas indicated] [________________].

FIELD QUALITY CONTROL

Field inspection [and testing] will be performed under provisions of Section [01410.] [________.]

Correct identified defects or irregularities.

Require site attendance of roofing [and insulation] materials' manufacturers [daily] [________] during installation of the Work.

CLEANING

In areas where finished surfaces are soiled by Work of this section, consult manufacturer of surfaces for cleaning advice and conform to their [documented] instructions.

Repair or replace defaced or disfigured finishes caused by Work of this section.

PROTECTION

Protect building surfaces against damage from roofing work.

Where traffic must continue over finished roof membrane, protect surfaces.

END OF SECTION