B01 RFP Attachment J01b LSSU Roof Replacement Specifications 06062024.pdf

APPLICATION: ROOFING

ASSEMBLY: FABRIC REINFORCED

215 MILS

PART I GENERAL

1.01 SUMMARY

A. This specification is prepared in accordance with the CSI three-part section format and shall be included as a separate section under DIVISION 7 - Thermal and Moisture Protection. Improvements and other changes to the contents shall be made only with the written approval of the architect.

1.02 RELATED SECTIONS (Note to Specifier: Edit to project requirements)

A. DIVISION 3 - Concrete [Section 03300] - Roof Deck Surface/Substrate

The coordination of this section is necessary to facilitate the successful installation of the waterproofing membrane.

*REFER TO SECTION 3.02 PREPARATION FOR ADDITIONAL DECK TYPES.*

C. DIVISION [ ] - Wood blocking and curbing D. DIVISION [ ] - Insulation E. DIVISION [ ] - Sheet metal flashing and counterflashing F. DIVISION [ ] - Prefabricated roof specialties G. DIVISION [ ] - Caulking and sealants H. DIVISION [ ] - Plumbing specialties I. DIVISION [ ] - Roof hatches

1.03 REFERENCES

A. American Society for Testing and Materials (ASTM).

B. Canadian General Standards Board CGSB-37.50-M89, Standard for "Asphalt, Rubberized, Hot Applied, for Roofing and Waterproofing."

C. Underwriters Laboratories (UL) Class A.

D. Factory Mutual Research Corporation (FM).

E. DuPont™, TechSolutions 508.3 Ballast Design Guide for PMR Systems.

F. American National Standards Institute/Single Ply Roofing Institute (ANSI/SPRI) RP-4

Wind Design Standard for Ballasted Single-Ply Roofing Systems.

G. International Concrete Repair Institute (ICRI) Concrete Surface Profile (CSP) Scale.

1.04 SYSTEM DESCRIPTION

A. Furnish and install a completed protected roof membrane assembly including roof substrate board (if required), surface conditioner (if required), monolithic membrane and related flashings, protection course, Styrofoam™ brand insulation (if required), filter fabric, drainage course (if required) and ballast/pavers/wood tile.

1.05 SUBMITTALS

A. Certification from an approved independent testing laboratory experienced in testing this type material, that the material meets the CGSB-37.50-M89 standard for rubberized asphalt membranes, including applicable ASTM procedures.

B. Certification that the roofing membrane has current validation by Underwriters

Laboratories, or other approved independent validation service provider, of a minimum 40% (post-consumer) recycled content.

C. Certification showing full time quality control of production facilities responsible for the manufacture of the rubberized asphalt and that each batch of material is tested to insure conformance with the manufacturers published physical properties.

D. Certification that the plant manufacturing this material has IS0 9001-2015 approval as evidenced by a copy of the official certificate.

E. Certification showing that all roofing components are being supplied and warranted by a single-source manufacturer.

F. Certification that the roof membrane assembly is currently Class A listed with

Underwriters Laboratories.

G. Certification that the roof membrane assembly is currently listed as a Class 1 Roof Cover with Factory Mutual Research Corporation when required.

H. Certification that the extruded polystyrene insulation if used is free from CFC's.

1.06 QUALITY ASSURANCE

A. The Roofing Contractor shall demonstrate qualifications to perform the work of this

Section by submitting the following documentation:

1. Certification or license by the membrane manufacturer as a locally based, authorized applicator of the product the installer intends to use, for a minimum of five (5) years.

2. List of at least three (3) projects, satisfactorily completed within the past five (5) years, of similar scope and complexity to this project. Previous experience submittal shall correspond to specific membrane system proposed for use by applicator.

B. Refer to Section 1.04 SYSTEM DESCRIPTION. Include single-source for all components from the manufacturer.

C. The rubberized asphalt membrane product shall contain an inert filler and crumb rubber to enable the product to be resistant to acids (fertilizers, building washes and acid rain) and maintain membrane thickness during application respectively.

D. Membrane Manufacturer shall have available an in-house technical staff to assist the contractor, when necessary, in application of the products and final inspection of the assembly.

E. Membrane Manufacturer Qualifications: Manufacturer shall demonstrate qualifications to supply materials of this section by certifying the following:

1. Membrane Manufacturer shall show evidence that the specified rubberized asphalt has been manufactured by the same source for thirty five (35) years and successfully installed on a yearly basis for a minimum of thirty five (35) years on projects of similar scope and complexity.

2. Membrane Manufacturer shall not issue warranties for terms longer than they have been manufacturing their hot fluid rubberized asphalt membrane.

F. Pre-Construction Conferences. The manufacturer shall meet with the necessary parties at the jobsite to review and discuss project conditions as it relates to the integrity of the roofing assembly.

1.07 DELIVERY, STORAGE AND HANDLING

A. Deliver materials in original unopened containers of packaging clearly labeled with manufacturer's name, brand name, instructions for use, all identifying numbers, and U.L.

labels.

B. Materials shall be stored in a neat, safe manner, not to exceed the allowable structural capacity of the storage area.

C. Store materials in a clean, dry area protected from water and direct sunlight.

D. Store all adhesives at temperatures between 60°F (15.5°C) and 80°F (26.6°C). If exposed to lower temperatures, restore materials to 60°F (15.5°C) minimum temperature before using.

E. Keep roof substrate board dry before, during, and after installation. Outside storage shall be off ground and protected by a breathable waterproof covering. Roof substrate board shall be roofed the same day as installed.

1.08 PROJECT CONDITIONS

A. Application of the membrane shall not commence nor proceed during inclement weather.

All surfaces to receive the membrane shall be free of water, dew, frost, snow and ice.

B. Application of membrane shall not commence nor proceed when the ambient temperature is below 0°F (-17.7°C).

C. Preparation and application of membrane shall be conducted in well ventilated areas.

D. Over its service life, do not expose membrane or accessories to a constant temperature in excess of 180°F (82°C) (i.e., hot pipes and vents or direct steam venting, etc.).

E. Adhesives contain petroleum distillates and are extremely flammable. Do not breathe vapors or use near an open fire. Do not use in confined areas without adequate ventilation.

Consult container or packaging labels and Material Safety Data Sheets (MSDS) for specific safety information.

F. Do not allow waste products (petroleum, grease, oil, solvents, vegetable or mineral oil, animal fat, etc.) to come in contact with the roof membrane. Any exposure to foreign materials or chemical discharges shall be presented to membrane manufacturer for evalua-tion to determine any impact on the roof membrane assembly performance.

G. Concrete Deck Surface Condition. IMPORTANT - Refer to 1.02 Related Sections.

H. Deck Preparation; refer to Section 3.02 Preparation.

I. For typical Protected Membrane Roof (PMR) applications, deck slopes in excess of 2 inches in 12 inches (10 degrees or 17%) shall be avoided.

J. The project design professional shall design the roofing/waterproofing assembly to properly locate the dew point condition and determine the need and location for a vapor retarder to prevent excessive condensation contamination within the roofing/waterproofing assembly and/or delamination of the roofing/waterproofing membrane from the substrate.

K. The project design professional shall design the roofing/waterproofing assembly to remain in place withstanding the wind speeds and uplift pressures as determined for the roof sections of the project.

L. General Contractor shall assure that adequate protection is provided after installation of the membrane and accessories to prevent damage from subsequent trade traffic.

1.09 WARRANTY

A. Upon completion of the work, the contractor shall supply the owner with a single-source warranty of U.S. origin direct from the manufacturer.

B. Warranties available from the manufacturer: (Note to Specifier: Edit to project requirements)

1. Material Warranties; excludes labor.

Duration: 5-, 10-, 15-, 20-year

2. Watertightness Warranties; includes labor and material to maintain watertight condition and replacement of Hydrotech supplied roof substrate board.

Duration: 5-, 10-, 15-, 20-year

3. Thermal Warranties; includes 90% retention of the original thermal value.

Duration 5-, 10-, 15-, 20-year

Note to specifier: A limited wind resistance warranty, to a maximum 70 mph gust wind speed, may also be available for the insulation. The roof ballast design requirements must follow the DuPont TechSolutions 508.3 Ballast Design Guide for PMR Systems. Contact Hydrotech DURING THE DESIGN PHASE for project specific ballasting assistance or guidelines.

4. Total System Warranties; covers components of the roof assembly, including membrane, flashing, insulation and pavers. Includes removal and replacement of the insulation and pavers when installed per Hydrotech's requirements and replacement of Hydrotech supplied roof substrate board.

a. Duration of Membrane/Flashing and replacement of Hydrotech supplied roof substrate board from date of installation: 5-, 10-, 15-, 20-year (watertight condition)

b. Duration of Insulation from date of purchase: 5-, 10-, 15-, 20-year (90% of original thermal value)

c. Duration of Pavers from date of purchase: 5-, 10-year (will not crack, split or delaminate due to freeze-thaw)

d. Duration of Wood Tile from date of purchase: 5-year (free of defects in material and workmanship)

**CONTACT HYDROTECH FOR EXACT WARRANTY TERMS AND CONDITIONS.**

PART II PRODUCTS

2.01 GENERAL

A. Refer to Section 1.04, SYSTEM DESCRIPTION. All components shall be obtained as a single-source from the membrane manufacturer to ensure total system compatibility and integrity.

2.02 MATERIALS

A. Membrane

1. Membrane shall be a hot, fluid applied, rubberized asphalt membrane meeting the CGSB-37.50-M89 standard and other pertinent physical properties:

PROPERTY TEST METHOD REQUIREMENT

Flash point

CGSB-37.50-M89

ASTM D-92

> 500°F* (260°C)

Penetration

CGSB-37.50-M89

ASTM D-5329

@ 77°F (25°C) max. 110 @ 122°F (50°C) max. 200

Flow CGSB-37.50-M89 ASTM D-5329 @ 140°F (60°C) max. 3.0mm

Toughness

≥ 5.5 Joules

Ratio of Toughness to Peak Load

≥ 0.040

Water Vapor Permeability

ASTM E-96, Procedure E

≤ 1.7 ng/Pa.s.m2

(0.027 perm)

Water Absorption

CGSB-37.50-M89 Gain in weight 0.35 g max.

Loss in weight 0.18 g max.

Low Temperature Flexibility (-25°C)

No delamination, adhesion loss, or cracking

Low Temperature Crack Bridging Capability

CGSB-37.50-M89 No cracking, adhesion loss, or splitting

Heat Stability CGSB-37.50-M89 No change in viscosity, penetration, flow or low temperature flexibility

Viscosity

2 - 15 seconds

Water Resistance (5 days/50°C) CGSB-37.50-M89

No delamination, blistering, emulsification, or deterioration

Softening Point ASTM D-36 180°F (82°C)

Elongation ASTM D-5329 1000% minimum

Resiliency

ASTM D-5329 40% minimum

Bond to Concrete 0°F (-18°C)

ASTM D-5329

Pass

Resistance to Acid ASTM D-896 Procedure 7.1 (N-8)

Pass - 50% Nitric Acid Pass - 50% Sulfuric Acid

Resistance to Hydrostatic Pressure

ASTM D-08.22

Draft 2

100 psi (equals 231 foot of head water)

Resistance to Salt Water (20% Sodium carbonate calcium chloride)

ASTM D-896 similar No delamination, blistering, emulsification or deterioration

Resistance to Fertilizer (Undiluted 15/5/5, nitrogen/phosphorus/potash)

ASTM D-896 similar No delamination, blistering, emulsification or deterioration

Resistance to Animal Waste

3-year exposure

No deterioration

Solids Content 100% - no solvents

Recycled Content UL Validated 40% (post-consumer) (30% REACH compliant)

Shelf Life 10 years (sealed)

Specific Gravity

1.15 + .02

* Or alternatively not less than 25oC above the manufacturer’s maximum recommended application temperature

B. Roof Substrate Board (if required) (Note to Specifier: Edit to project requirements)

1. Impact resistant, nonstructural, fiber-reinforced, gypsum panels made from 95% recycled content.

- Securock Gypsum-Fiber Roof Board as marketed by American Hydrotech, Inc.

a. Miscellaneous

i. Fasteners and Plates Provide size and type in accordance with Factory Mutual and/or applicable codes and to maintain structural integrity. Only 3 inch round metal plates shall be used.

ii. Adhesive Provide adhesive compatible with roof substrate board and insulation to comply with Factory Mutual and/or applicable codes and to maintain structural integrity.

iii. Vapor Barrier Provide suitable vapor retarder as required by design professional.

2. Other approved fire rated type "X" gypsum roof substrate board.

C. Surface Conditioner

1. Asphaltic surface conditioner for concrete surfaces only

- American Hydrotech, Inc., Surface Conditioner

D. Reinforcing

1. Spunbonded polyester fabric reinforcing sheet.

- American Hydrotech, Inc., Flex Flash F®

2. 60-mil (1.5 mm) thick, uncured neoprene reinforcing sheet (heavy duty).

- American Hydrotech, Inc., Flex Flash UN®

E. Flashing (Note to Specifier: Edit to project requirements)

1. 60-mil (1.5 mm) thick, uncured neoprene sheet.

- American Hydrotech, Inc., Flex Flash UN®

2. 157-mil (4 mm) thick, torch-grade, modified asphalt, reinforced flashing membrane.

- American Hydrotech, Inc., Flex-Flash MB®

3. Two-component, liquid applied resin membrane flashing system.

a. American Hydrotech, Inc., HydroSeal Resin

- poly methyl-methacrylate (PMMA) resin

b. American Hydrotech, Inc., HydroSeal Matrix

- acrylic resin with integral chopped polymer fiber reinforcement

c. American Hydrotech, Inc., HydroSeal Flashing Accessories

- resin based primers, additives, reinforcing fleece, surfacing topcoats (Note to Specifier: CONSULT Hydrotech for recommended products and uses.)

F. Adhesives/Sealant (Note to Specifier: Edit to project requirements)

1. Contact adhesive to bond elastomeric flashing together.

- American Hydrotech, Inc., Splicing Cement

2. Pressure sensitive butyl tape to bond elastomeric flashing together.

- American Hydrotech, Inc., Splice Tape

3. Contact adhesive to bond flashing to an approved substrate.

- American Hydrotech, Inc., Bonding Adhesive

4. Sealant to seal flashing seam edge.

- American Hydrotech, Inc., Lap Sealant

G. Separation Sheet/Protection Course (Note to Specifier: Edit to project requirements)

1. Fiberglass reinforced rubberized asphalt sheet.

a. American Hydrotech, Inc., Hydroflex® 10

b. American Hydrotech, Inc., Hydroflex® 30

2. Fire resistant, fiberglass reinforced, granular surfaced, rubberized asphalt cap sheet.

a. American Hydrotech, Inc., Hydrocap 160FR

b. American Hydrotech, Inc., Hydrocap 90FR (Note to Specifier: req’d. for

FM Class1 Roof Cover)

H. Prefabricated Drainage Course (if required) (Note to Specifier: Edit to project requirements)

1. Composite drainage system consisting of a three-dimensional, crush-proof, drainage core and a filter fabric meeting the following physical properties.

-American Hydrotech, Inc., Hydrodrain 300, 400, 700 or 1000 series

PROPERTY TEST METHOD VALUES

CORE:

Compressive Strength ASTM D-1621 300/302/1000 - 30,000 psf

(14.66 kg/cm2) 400/420 - 15,000 psf (7.32 kg/cm2) 700 - 18,000 psf (8.79 kg/cm2)

Thickness ASTM D-1777 1000 - .25 in (.64 cm) 300/302 - .22 in (.56 cm) 400/420/700 - .40 in (1.016 cm)

Flow, Q @ 3600 psf & hydraulic gradient of 1

ASTM D-4716 300/1000 - 7 gpm/ft width (72.00 lpmin/m width)

302 - 5.5 gpm/ft width (68.30 lpmin/m width) 400/420 - 15 gpm/ft width (183.3 lpmin/m width) 700 - 18 gpm/ft width (223.52 lpmin/m width)

FABRIC:

Flow ASTM D-4491 300/302/1000 - 150 gpm/ft2

(6105 lpmin/m2) 400/420 - 150 gpm/ft2 (6105 lpmin/m2) 700 - 110 gpm/ft2 (4475 lpmin/ft2)

U.V. Resistance ASTM D-4355 Fully Stabilized Apparent Opening Size (EOS) CW-02215 300/302/400/420/1000 – 70 (.212mm)

700 – 30 (.60 mm)

Grab Tensile ASTM D-4632 300/302/400/420/1000 - 90 lbs.

(0.4 kN) 700 – 360x260 lbs.

(445x355 N)

I. Insulation (Note to Specifier: Edit to project requirements)

1. Extruded polystyrene rigid board insulation for use above membrane.

-Styrofoam™ brand insulation [TYPE] as manufactured by DuPont™, marketed by American Hydrotech, Inc.

a. Insulation shall meet ASTM C-578, Type VI or VII.

b. Minimum compressive strength, ASTM D-1621, 40 or 60 psi (276 or 414 kPa) (variance by type of product)

c. Maximum water absorption by volume per ASTM C-272, 0.3%

d. Water vapor permeance for 1" product per ASTM E-96, 0.8 perm (max.)

(63 ng/Pa/s/m2)

e. Insulation shall have an R value of 5.0°F ft2 h/Btu/in. (0.88 K m2/W) of thickness when tested at 75°F (23.9°C) mean temperature in accordance with ASTM C-518

f. Product shall be free of CFC's

Product types available: Styrofoam™ brand Roofing Material; Ribbed Roofing Material; Plaza Deck; and High Load 100. (Note to Specifier: CONSULT Hydrotech for recommended product type.)

2. Extruded polystyrene rigid board insulation for use as flat fill and tapered insulation below roof substrate board.

- Styrofoam™ brand insulation [TYPE] as manufactured by DuPont™, marketed by American Hydrotech, Inc.

a. Insulation shall meet ASTM C-578, Type IV.

b. Minimum compressive strength, ASTM D-1621, 25 psi (172.4 kPa)

c. Maximum water absorption by volume per ASTM D-2842, 0.7%

d. Water vapor permeance for 1" product per ASTM E-96, 1.1 perm (max.)

(63 ng/Pa/s/m2)

e. Insulation shall have an R value of 5.0°F ft2 h/Btu/in. (0.88 K m2/W) of thickness when tested at 75°F (23.9°C) mean temperature in accordance

f. Product shall be free of CFC's

Product types available: Styrofoam™ brand, DeckMate Plus, DeckMate Plus FA, Tapered DeckMate Plus FA. (Note to Specifier: CONSULT Hydrotech for recommended product type.)

J. Filter Fabric

1. Water permeable polymeric fabric.

-American Hydrotech, Inc., Stone Filter Fabric

K. Roof Ballast (Note to Specifier: Edit to project requirements)

1. Pavers

a. Ballast Pavers

-American Hydrotech, Inc., Ballast Pavers, meeting the following physical properties:

Compressive Strength ASTM C140 >8,500 psi average min.

Flexural Strength ASTM C293 >1,100 psi average min.

Water Absorption ASTM C140 Not greater than 5% Freeze/Thaw ASTM C67 <1% loss/dry weight (50 cycles) Centerload - Min. 1,750 lbs.

b. Architectural Finish Pavers

-American Hydrotech, Inc., Architectural Pavers, meeting the following physical properties:

Compressive Strength ASTM C140 >8,500 psi average min.

Flexural Strength ASTM C293 >1,100 psi average min.

Water Absorption ASTM C140 Not greater than 5% Freeze/Thaw ASTM C67 <1% loss/dry weight (50 Cycles) Centerload - Min. 1,750 lbs.

c. Paver Accessories

1. Fixed Height Pedestals as supplied by American Hydrotech, Inc.

2. Adjustable Height Pedestals as supplied by American Hydrotech, Inc.

2. Stone Ballast

Well screened and washed stone gravel meeting ASTM D-448-80, gradations #2, 4 or 5 as required.

3. Concrete Pour Topping

(Note to specifier: DuPont™, manufacturers of Styrofoam™ brand insulation, recommends the incorporation of an air layer between the insulation and concrete.

Hydrotech suggests the use of Hydrodrain AL for this purpose.)

L. Self-Ballasted Insulation (Note to Specifier: Edit to project requirements)

1. Extruded polystyrene rigid board insulation panels, topped with latex-modified concrete.

-American Hydrotech, Inc., Hydroguard or Hydroguard Heavy

a. Insulation shall meet ASTM C-578, Type VI

b. Minimum compressive strength, ASTM D-1621, 40 (276 kPa)

c. Maximum water absorption by volume per ASTM C-272, 0.3%

d. Water vapor permeance for 1" product per ASTM E-96, 0.8 perm (max.)

(63 ng/Pa/s/m2)

e. Insulation shall have an R value of 5.0 F ft2 h/Btu/in. (0.88 K m2/W) of thickness when tested at 75°F (23.91°C) mean temperature in accordance

f. Product shall be free of CFC's.

g. Latex-modified concrete topping shall be 3/8” thick for Hydroguard or

15/16” thick for Hydroguard Heavy.

h. Panels to be manufactured with tongue and groove edges along long side.

M. Wood Tile Assembly (Note to Specifier: Edit to project requirements)

1. Roof tiles of tropical hardwood for installation on adjustable pedestals.

-Bison Wood Tiles as marketed by American Hydrotech, Inc.

a. Model:WT-IPE-24RIBBED Ipê Wood Tile Dimensions: 23 7/8” x 23 7/8” x 1.69” nominal Weight per tile: 24 lbs; Weight per square foot: 6 lbs.

Color: Brown (Note: Tiles are a natural product and have variations in color and grain).

Surface: Ribbed

b. Model:WT-IPE-24SMOOTH Ipê Wood Tile Dimensions: 23 7/8” x 23 7/8” x 1.69” nominal Weight per tile: 24 lbs; Weight per square foot: 6 lbs.

Color: Brown (Note: Tiles are a natural product and have variations in color and grain).

Surface: Smooth

c. Model:WT-IPE-48 Ipê Wood Tile Dimensions: 47 7/8” x 23 7/8” x 1.69” nominal Weight per tile: 48 lbs; Weight per square foot: 6 lbs.

Color: Brown (Note: Tiles are a natural product and have variations in color and grain.)

Surface: Ribbed; Smooth by Special Order

d. Model: WT-FSC-MAS -24 Massaranduba Wood Tile (FSC Certified SCS-

COC-002585)

Dimensions: 23 7/8” x 23 7/8” x 1.69” nominal Weight per tile: 24 lbs; Weight per square foot: 6 lbs..

Color: Reddish Brown (Note: Tiles are a natural product and have variations in color and grain.)

Surface: Ribbed

e. Model: WT-FSC-IPE -24 Ipe Wood Tile (FSC Certified SCS-COC- 002585) Dimensions: 23 7/8” x 23 7/8” x 1.69” nominal Weight per tile: 25 lbs; Weight per square foot: 6.25 lbs.

Color: Reddish Brown (Note: Tiles are a natural product and have variations in color and grain.)

Surface: Smooth

2. Wood Tile Accessories

a. FS1 Fastening Kit as supplied by American Hydrotech, Inc.

b. Adjustable Height Pedestal as supplied by American Hydrotech, Inc.

N. Miscellaneous

1. Vegetative Roofing

Components of the Garden Roof® Assembly vary based upon project specifics.

- American Hydrotech, Inc. Garden Roof Assembly (Note to Specifier: Refer to

American Hydrotech, Inc. Garden Roof Assembly Long Form Guideline Specifications.)

2. Prefabricated Concrete Curbing

High density, hydraulically pressed, prefabricated concrete curbing units as shown on plans and details.

- Hanover Architectural Products Rock Curb® as marketed by American

Hydrotech, Inc. size as noted on plans and details. (Note to Specifier: Per standard product line: please indicate configuration, layout, size, color and edge profile of Rock Curb® on plans and details)

PART III EXECUTION

3.01 INSPECTION

A. The roofing contractor shall examine all surfaces to receive the roofing assembly to verify it is acceptable and proper for the application of the membrane. Refer to American Hydrotech's Pre-Installation & Application Guidelines.

B. The roofing contractor shall not proceed with the installation of the roof membrane assembly until all roof defects have been corrected.

3.02 PREPARATION

A. All surfaces shall be dry, smooth, free of depressions, voids, protrusions, clean and free of unapproved curing compounds, form release agents and other surface contaminants. (Note to Specifier: Edit to project requirements)

1. Cast in-place concrete/Composite deck

a. Poured in place concrete shall be monolithic, smooth, free of voids, spalled areas, laitance, honeycombs, and sharp protrusions.

b. Refer to Section 1.02 of this specification, Division 3.

2. Precast concrete decks

a. Precast units shall be mechanically secured to minimize differential movement and all joints between units shall be grouted or caulked.

b. Joints shall be pre-detailed with membrane and the appropriate manufacturer required reinforcing prior to full membrane application.

3. Plywood decks

a. Minimum thickness of 1/2" (12.7 mm) shall be required with adequate structural support.

b. Tongue and groove joint edges shall be required.

c. Adequate number and type of fasteners shall be used to comply with applicable codes and maintain structural integrity.

4. Metal Deck with roof substrate board

a. Roof substrate board shall be fire rated type "X" board attached to minimum 22 gauge steel decking with adequate structural support.

1. Minimum 5/8 inch thick substrate board shall be used directly to metal deck.

2. Minimum 1/2 inch thick substrate board shall be used over insulation.

b. Flat fill and sloped roof insulation shall be installed in accordance with layout indicated on shop drawings and insulation board manufacturer’s minimum requirements.

c. Adequate number and type of fasteners shall be used to comply with board manufacturers minimum requirements and applicable codes and maintain structural integrity.

1. A minimum of 10 fasteners per full-size roof board shall be used.

d. Appropriate roof adhesive shall be used in accordance with adhesive manufacturer requirements to comply with applicable codes and maintain structural integrity.

1. Size and spacing of adhesive beads shall be as required by adhesive manufacturer.

e. Roof substrate boards shall be installed such that all edge and end joints are supported by metal deck ribs and/or appropriate blocking.

f. Roof substrate board end joints of adjacent lengths shall be staggered.

g. Where required, a suitable vapor barrier membrane shall be applied as determined by the project design professional prior to installation of the roof substrate board and/or insulation.

h. Roof substrate board edges and ends shall be butt loosely in typical installations. Long, uninterrupted runs (greater than 200 feet) of roof substrate board may require slight gapping due to higher temperature gain.

Gapping shall not exceed 3/16 inch and all such gaps shall be filled flush with the surface of the roof board with an appropriate sealant. CONTACT Hydrotech for specifics.

i. Roof substrate board shall be cut to size using a sharp utility knife and straightedge. The surface of the roof substrate board shall be scored with the utility knife and the board bent up sharply towards the score cut. A keyhole-type drywall saw shall be used for penetration cutouts and radii. A low rpm circular saw shall be used for 5/8 inch thick roof board.

5. Re-Roof /Tear-Off Application

a. Asphalt, coal tar pitch or other existing membrane shall be removed.

CONTACT Hydrotech.

b. Deck type acceptable to Hydrotech.

B. Substrate cleaning

1. Thoroughly sweep the substrate which is to receive the roof membrane.

2. Substrate shall be blown clean using an air compressor to remove any remaining loose debris.

3. Final check to determine if concrete has been properly cleaned is to apply a test patch of Monolithic Membrane 6125 to the surface and check its adhesion.

3.03 INSTALLATION

A. Surface conditioner application (to concrete substrates only)

1. Apply the surface conditioner to the concrete using a hand held sprayer evenly at a rate of 300 to 600 SF/gallon (7.4 - 14.7 m2/L) depending on surface texture.

Surface conditioner shall "tan" the surface, not blacken it.

2. Allow sufficient time for the surface conditioner to thoroughly dry prior to the membrane application.

B. Membrane preparation

1. The membrane shall be heated in double jacketed, oil bath or hot air melter with mechanical agitation, specifically designed for the preparation of a rubberized asphalt membrane.

2. Heat membrane until membrane can be drawn-free flowing at a temperature range between 350°F (176°C) and 375°F (190°C).

C. Detailing/Flashing

1. All detailing and flashing shall be done in accordance with the manufacturer's standard guideline details.

2. All detailing and flashing shall be completed before installing the membrane over the field of the substrate.

3. Roof substrate board joints shall be pre-detailed with membrane and fabric reinforcing prior to full fabric reinforced membrane application.

4. All liquid-applied, resin flashings shall be applied over properly completed membrane flashing details in accordance with the manufacturer’s standard guideline details.

D. Membrane Application

1. Apply the rubberized asphalt membrane at a rate to provide a continuous, monolithic coat of 90 mil minimum (approximately 2.3 mm), into which is fully embedded a layer of the spunbonded polyester fabric reinforcing sheet, followed by another continuous monolithic coat of membrane at an average thickness of 125 mil (approx. 3.2 mm). Total membrane thickness shall be 215 mils average (approx. 5.5 mm), 180 mils minimum.

2. Overlap fabric reinforcing sheet 1-2 inches (25.4 mm - 50.8 mm) with membrane between sheets.

3.04 SEPARATION SHEET/PROTECTION COURSE INSTALLATION

A. Separation/Protection course shall be installed as follows: (Note to Specifier: Edit to project requirements)

1. Embed the separator sheet/protection course into the membrane while it is still warm to insure a good bond.

2. Overlap adjoining sheet edges a minimum of 2"-3" (50.8 mm - 76.2 mm) to insure complete coverage.

a. Laps and seams of Hydroflex 10 and 30 and Hydrocap 90FR protection sheet shall be installed dry or sealed with membrane.

b. Laps and seams of Hydrocap 160FR protection sheet shall be sealed with membrane or propane torch.

3. Hydroflex 10 and 30 and Hydrocap 90FR separator sheet/protection courses shall be covered by insulation, fabric and ballast as soon as possible, within 30 days of membrane installation.

4. Hydroflex 10 shall not be installed when Hydrodrain 300 is specified. Hydrodrain 1000, 400, 420 or 700 are appropriate directly over Hydroflex 10.

3.05 MEMBRANE INTEGRITY TEST

A. The roof area or portions thereof shall be leak tested by means of Electronic Leak

Detection (ELD) or by ponding water at a minimum depth of 2" (50.8 mm) for a period of 48 hours to check the integrity of the membrane installation.

1. ELD testing should be performed on all installed membrane assembly. Testing is to be performed in accordance with ASTM D7877 or ASTM D8231. Areas that are ELD tested should be covered immediately

2. VERIFY that the structure can support the deadload weight of a water test before testing.

3. If leaks should occur the water shall be drained completely and the membrane installation repaired.

B. In the event of excessive damage to the membrane assembly, Electronic Leak Detection testing shall be required prior to the placement of subsequent overburden.

3.06 DRAINAGE COURSE / INSULATION / FILTER FABRIC / BALLAST

PLACEMENT

A. General

1. Contractor shall examine the roof area to be covered with subsequent topping materials in order to insure that all roof areas have received the membrane, the membrane is free of damage, it is properly protected, and all flashing has been properly installed, before placing the insulation.

2. Drainage course (if required), insulation, fabric and ballast shall be installed as each section is completed.

B. Prefabricated Drainage Placement (if required)

1. Install drainage course on horizontal and vertical surfaces in accordance with the manufacturer's recommendations.

(Note to specifier: Hydrodrain 300 shall not be installed directly over Hydroflex 10 separation/protection sheet. If drainage mat is to be specified over Hydroflex 10, Hydrodrain 1000 or 420 shall be specified.)

2. Layout and position drainage course and allow to lay flat. Cut and fit drainage course to perimeter and penetrations.

3. The geotextile overlapped edges may be bonded to the adjacent drainage course geotextile with an appropriate adhesive to ensure continuous geotextile integrity.

4. Drainage course shall be covered with subsequent overburden within 10 – 14 days of installation.

C. Insulation Placement

1. Loose lay in a staggered manner and tightly butt together all insulation boards. The maximum acceptable opening between insulation boards shall be 3/8" (9.5 mm).

Insulation shall be installed within 3/4" (19 mm) of all projections, penetrations, etc.

2. When multi-layer insulation applications are involved the bottom layer of insulation shall be the thickest layer and must be a minimum of 2" thick (50.8 mm).

All layers shall be installed unadhered to each other and all joints staggered in relation to underlying layers.

D. Filter Fabric Placement

1. Position the fabric over the insulation as follows:

(Note to specifier: Fabric is not required under full paver installations, however, may be desirable to mask insulation color at joints between pavers.)

a. Overlap all edges a minimum of 1 foot (304.8 mm).

b. Install the fabric so that no joints will exist between the sheets parallel to and within 6 feet (1828.8 mm) of the roof perimeter.

c. Extend the fabric to 2" to 3" (50.8 mm - 76.2 mm) above the ballast at the perimeter and penetrations.

d. The fabric shall be extended to drain bases or bonnets, but should not cover drains or restrict water flow to the drain.

e. Additional fabric shall be installed around all penetrations in order to prevent stone entry into the space between the penetration and the insulation.

f. Black, fabric-covered insulation shall not be left exposed in ambient temperatures greater than or equal to 90°F. Measures to maintain temperatures at insulation surface below 165°F shall be implemented.

E. Ballast

1. Ballast shall be installed in accordance with project specifications and requirements.

F. Wood Tile Installation

1. Installation of Bison Wood Tiles over Styrofoam™ insulation shall be preceded by the application of appropriate ballast. Reference 3.06.E. above.

2. One FS1 Fastening Kit shall be required to secure the corners of two or more tiles to each Hydrotech Adjustable Pedestal without penetrating or damaging wood.

Contact American Hydrotech, Inc. for complete installation guidelines.

G. Self-Ballasted Insulation Placement

1. Installation of Hydroguard insulation panels requires analysis based upon project specifics. Contact American Hydrotech, Inc. for complete installation guidelines.

H. Green Roof Installation

1. Installation of the Garden Roof Assembly requires analysis based upon project specifics. Contact American Hydrotech, Inc. for complete installation guidelines.

3.07 PROTECTION

A. Roof walkways

1. Walkways shall be required at all traffic concentration points (i.e., roof hatches, access doors, ladders, etc.) regardless of traffic frequency.

a. Pavers shall be loose laid and weight 18 lbs/sqft minimum (88 kg/m2).

3.08 JOB COMPLETION

A. Contractor and a representative of the membrane manufacturer shall inspect the roof assembly and notify the contractor of any defects. All defects must be corrected.

B. Clean up all debris and equipment.

END OF SECTION