07_56_10.pdf

CONSTRUCT VARIABLE HEIGHT TOWER, C-86 FTFA 13-3005

EGLIN AFB 13BK

Section 07 56 10 Page 1

SECTION 07 56 10

FLUID APPLIED ROOFING

1 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.

AMERICAN NATIONAL STANDARDS INSTITUTE

ANSI/UL 790 Standard Test Methods for Fire Tests of Roof

Coverings

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

ASCE 7 (2010; Change 2010; Change 2011; Errata 2011;

Change 2011) Minimum Design Loads for

Buildings and Other Structures

ASTM INTERNATIONAL (ASTM)

ASTM D638/D638M (2011) Standard Test Method for Tensile

Properties of Plastics

ASTM D4258/D4258M (2011) Standard Practice for Surface Cleaning

Concrete for Coating

ASTM D4259/D4259M (2006) Standard Practice for Abrading

Concrete

ASTM D4541/D4541M (2011) Standard Test Method for Pull-Off

Strength of Coatings Using Portable Adhesion

Testers

ASTM E96/E96M (2011) Standard Test Methods for Water Vapor

Transmission of Materials

ASTM E108/E108M (2011) Standard Test Methods for Fire Tests of Roof Coverings

NATIONAL ROOFING CONTRACTORS ASSOCIATION (NRCA)

NRCA 0405 (2011) Roofing and Waterproofing Manual

THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)

Section 07 56 10 Page 2

1.2 QUALITY ASSURANCE

a. Membrane Manufacturer: Company specializing in manufacturing fully reinforced cold fluid applied liquid resin waterproofing membrane systems with a minimum of ten (10) years of documented applications in the United States. Membrane Manufacturer shall submit the following certifications for review:

1. Substrates and conditions are acceptable for purpose of providing specified warranty.

2. Materials supplied shall meet the specified requirements.

b. Applicator: Company specializing in performing the work of this section with (3) years documented experience and approved by system manufacturer for warranted membrane installation. Applicator shall submit the following certification for review:

1. Applicator shall submit documentation from the membrane manufacturer to verify contractor’s status as an approved applicator for warranted installations.

c. Evaluate moisture content of substrate materials. Contractor shall determine substrate moisture content throughout the work and record with Daily Inspection Reports or other form of reporting acceptable to the Owner or designated Representative, and Membrane Manufacturer.

d. Random tests to determine tensile bond strength of membrane to substrate shall be conducted by the Contractor at the job site using an Elcometer Adhesion Tester Model 106 or similar device, or by the performance of a manual pull test. Contractor shall perform tests at the beginning of the Work, and at intervals as required to assure specified adhesion with a minimum of three (3) tests per 5000 square feet. Smaller areas shall receive a minimum of three (3) tests. Test results shall be submitted to the Owner or his designated

Representative and the Membrane Manufacturer. Contractor shall immediately notify the Owner or his designated Representative and

Membrane Manufacturer in the event bond test results are below specified values.

1. Adequate surface preparation will be indicated by tensile bond strength of membrane to substrate greater than or equal to 220 psi (1.5 N/mm ), as determined by use of an adhesion tester.

2. Adequate surface preparation will be indicated by 135 peel bond strength of membrane to substrate such that cohesive failure of substrate or membrane occurs before adhesive failure of membrane/substrate interface.

3. In the event the bond strengths are less than the minimum specified, additional substrate preparation is required.

Repeat testing to verify suitability of substrate preparation.

Section 07 56 10 Page 3

e. Monitor quantities of installed materials. Monitor application of resin mixture, reinforcing fleece and flashing. Perform Work in accordance with manufacturer's instructions.

1.3 REGULATORY REQUIREMENTS

a. Conform to applicable building and jurisdictional codes for roofing/waterproofing assembly and fire resistance requirements.

b. Comply with requirements of OSHA, NIOSH or local governing authority for work place safety.

1.4 PRE-INSTALLATION MEETING

a. Convene a pre-installation meeting at the job site (1) week before starting work of this section. Require attendance of parties directly affecting work of this section, including but not limited to, Roofing/Waterproofing Specifier, Owner's Representative, Roofing/Waterproofing Contractor, and Membrane Manufacturer's

Representative. Review roofing/waterproofing preparation and installation procedures, coordination and scheduling required with related work, and condition and structural loading limitations of deck/substrate.

1.5 FIELD INSPECTION SERVICES

a. Manufacturer’s technical representative shall provide the following inspections of the membrane application:

1. Jobstart inspection at the beginning of each phase of the project, to review special detailing conditions and substrate preparation.

2. Periodic in-progress inspections throughout duration of the project to evaluate membrane and flashing application.

3. Final punch-list inspection at the completion of each phase of the project prior to installation of any surfacing materials.

4. Warranty inspection to confirm completion of all punch list items and surfacing application.

1.6 SUBMITTALS

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

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

SD-01 Preconstruction Submittals

Qualification of Manufacturer; G

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Section 07 56 10 Page 4

Qualification of Installer; G

SD-02 Shop Drawings

Submit shop drawings of cold fluid-applied reinforced polyurethane system showing all a project plan, size, flashing details, and attachment for review and approval by the Owners Representative and

Membrane Manufacturer; G

Flashing and Accessories; G

SD-03 Product Data

Membrane System; G

Flashing Materials; G

Accessories; G

SD-04 Samples

Membrane System; G

Flashing Materials; G

Manufacturer's Color Charts and Chips; G

SD-08 Manufacturer's Instructions

Installation of Membrane System; G

SD-11 Closeout Submittals

Manufacturer’s Warranty; G

Applicator’s Warranty: G

Information Form and Placard; G

Manufacturer's Field Inspection Reports; G

Instructions; G

Material Safety Data Sheets for all components; G

Date Of Installation Wall-Mounted Placard; G

20 year "No-Dollar-Limit" Warranty for Labor and Materials; G

1.7 PROJECT CONDITIONS

A. Do not apply roofing/waterproofing membrane during or with the

Section 07 56 10 Page 5 threat of inclement weather.

B. Application of cold fluid-applied reinforced polyurethane roofing/waterproofing membrane may proceed while air temperature is between 40°F (5°C) and 85°F (30°C) providing the substrate is a minimum of 5°F above the dew point.

C. When ambient temperatures are at or expected to fall below 50°F

(10°C), or reach 85°F (30°C) or higher, follow Membrane System

Manufacturer's recommendations for weather related additives and application procedures.

D. Ensure that substrate materials are dry and free of contaminants.

DO NOT commence with the application unless substrate conditions are suitable. Contractor shall demonstrate that substrate conditions are suitable for the application of the materials.

E. Odor control and elimination measures are not typically necessary, but if required by the Owner or his designated

Representative, Contractor shall implement odor control and elimination measures prior to and during the application of the roofing/waterproofing materials. Control/elimination measures shall be field tested at off-hours and typically consists of one

(1) or a multiple of the following measures:

1. Sealing of air intakes with activated carbon filters. Install filters in accordance with requirements and recommendations of the filter manufacturer. Seal filters at joints and against building exterior walls to prevent leakage of unfiltered air.

2. Erection and use of moveable enclosure(s) sized to accommodate work area(s) and stationary enclosure for resin mixing station. Enclosure shall be field constructed or pre-manufactured of fire retardant materials in compliance with local code requirements in accordance with requirements of the

Owner or his designated Representative. Equipment enclosure(s) with mechanical air intake/exhaust openings and

Odor Control Air Cleaners, as required to clean enclosed air volume and to prevent odor migration outside the enclosure.

Exhaust opening shall be sealed with activated carbon filter.

3. Protection of Contractor personnel and occupants of the structure and surrounding buildings as necessary to comply with requirements of OSHA, NIOSH and/or governing local authority.

F. When disposing of all refuse or unused materials, observe all

EPA, OSHA or local disposal requirements.

1.8 COORDINATION AND PROTECTION

A. Coordinate the work with the installation of associated metal flashings, accessories, appurtenances, etc. as the work of this section proceeds.

Section 07 56 10 Page 6

B. Building components shall be protected adequately (with tarp or other suitable material) from soil, stains, or spills at all hoisting points and areas of application. Contractor shall be responsible for preventing damage from any operation under its

Contract. Any such damage shall be repaired at Contractor's expense to Owner's satisfaction or be restored to original condition.

C. Provide barricades, retaining ropes, safety elements

(active/passive) and any appropriate signage required by OSHA, NIOSH, and NSC and/or the Owner or designated Representative.

D. Protect finished roofing/waterproofing membrane from damage by other trades by the use of a cushioning layer such as 1” thick expanded polystyrene insulation and an impact layer such as ½” thick exterior-grade plywood.

E. Do not allow waste products containing petroleum, grease, acid, solvents, vegetable or mineral oil, animal oil, animal fat, etc.

or direct steam venting to come into direct contact with the membrane unless approved by manufacturer’s chemical resistance chart.

1.9 DELIVERY, STORAGE, AND PROTECTION

A. The Contractor together with the Owner or his designated

Representative shall define a storage area for all components.

The area shall be cool, dry, out of direct sunlight, and in accordance with manufacturer‘s recommendations and relevant regulatory agencies. Materials shall not be stored in quantities that will exceed design loads, damage substrate materials, hinder installation or drainage.

B. Store solvent-bearing solutions, resins, additives, inhibitors or adhesives in accordance with the MSDS and/or local fire authority. After partial use of materials replace lids promptly and tightly to prevent contamination.

C. Roll goods shall be stored horizontally on platforms sufficiently elevated to prevent contact with water and other contaminants. DO

NOT use rolls that are wet, dirty or have damaged ends.

D. Roofing/waterproofing materials must be kept dry at all times.

If stored outside, raise materials above ground or roof level on pallets and cover with a tarpaulin or other waterproof material.

Plastic wrapping installed at the factory should not be used as outside storage covers.

E. Follow manufacturer's directions for protection of materials prior to and during installation. Do not use materials that have been damaged to the point that they will not perform as specified. Fleece reinforcing materials must be clean, dry and free of all contaminants.

F. Copies of all current MSDS for all components shall be kept on site. Provide any and all crew members with appropriate safety

Section 07 56 10 Page 7 data information and training as it relates to the specific chemical compound he or she may be expected to deal with. Each crew member shall be fully aware of first-aid measures to be undertaken in case of incidents. Comply with requirements of

OSHA, NIOSH or local governing authority for work place safety.

1.10 WARRANTY

A. Manufacturer's Full Assembly Premier Warranty: Provide [(10)

(15) (20)] year manufacturer's premier warranty under provisions of this section. This warranty provides for cost of labor and materials for loss of watertightness, limited to amounts necessary to effect repairs necessitated by either defective material or defects in related installation workmanship, with no dollar limitation (“NDL”). Removal and reinstallation of insulation, pavers, ballast, and vegetated overburden is included in warranty coverage.

B. Waterproofing Contractor's Warranty: Provide 5 year "Applicator

Maintenance Warranty" covering workmanship for all work of this section including installation of membrane, flashings, metal work, and roofing/waterproofing accessories.

C. Submit (2) executed copies of both the manufacturer and applicator warranties for the periods stipulated, starting from the date of substantial completion. Each warranty must be signed by an authorized representative of the issuing company.

1.11 MATERIAL SUBSTITUTIONS

A. Materials proposed for use in the performance of the work that are not specified herein must be submitted to the Owner/Owner’s

Representative for evaluation no later than ten days prior to bid.

2 PART 2 PRODUCTS

2.1 GENERAL

The products herein specified are totally pre-engineered products of the listed manufacturer and establish criteria for the approval of substitutions. Products must be part of a virtually odorless, pre-engineered, low VOC fully reinforced cold liquid applied polymeric resin waterproofing membrane system, equivalent in function, quality, composition and method of application to be considered for approval as an

"Approved Substitute". Substitute materials must meet or exceed the physical performance characteristics of the specified materials. PMMA or single component primers or resin systems will not be accepted. A minimum 165 g/m fleece reinforcement is required.

Section 07 56 10 Page 8

2.1.1 APPROVED MANUFACTURES

Fluid-applied roof membrane system shall be KEMPEROL 2K-PUR by Kemper

System, Inc. 1 Reuten Drive Closter, NJ 07624 (800)541-5455, or approved equivalent.

2.2 MEMBRANE

Membrane: Two-component, cold fluid-applied reinforced polyurethane waterproofing membrane with a 360 degree needle punched non-woven

165 g/m polyester reinforcing fleece, for a finished dry film membrane thickness of .070 inch nominal per ply. Provide products manufactured and supplied by the following:

1. Kemper System America’s Kemperol 2K-PUR resin for use in an adhered waterproofing system.

B. Physical Properties:

Property Value Test Method

Color Gray-Green -

Physical state Cures to solid -

Nominal thickness (165 fleece) 70 mils -

Tensile strength @ break 120 lb/in ASTM D-751

Elongation 50% ASTM D-751

Tearing strength 5.0 lbs ASTM D-751

Puncture resistance 140 lbf FTMS 101-2031

Dimensional stability 0.1% ASTM D-1204

Water absorption 2.2% ASTM D-471

Surface hardness Shore A 85 ASTM D-2240

Water vapor transmission 0.04 perms ASTM E-96

Usage time* 30 minutes -

Rainproof after* 2 hours -

Solid to walk on after* 24 hours -

Solid to drive on with air rubber tires after*

48 hours -

Surfacing to be applied between* 16-48 hours

Overburden may be applied after 2 days -

Completely hardened after 3 days -

Crack spanning 2mm/0.08 inch -

Resistance to temperatures up to

(short term)

250°C/482°F -

*all times are approximate and depend upon air flow, humidity and temperature.

2.3 FLASHINGS

Membrane Flashings: A composite of the same resin material as field membrane with 165 g/m fleece reinforcement.

Section 07 56 10 Page 9

2.4 SUBSTRATE PRIMERS AND RESIN ADDITIVES

Polyurethane Primer: Two-component, solvent-free polyurethane resin for use in improving adhesion of membrane to wood, metal and bituminous substrate surfaces, as provided by the following manufacturer:

1. Kemper System America, Inc.’s Kempertec D primer.

i) Epoxy Primer: Two-component, solvent-free epoxy resin for use in improving adhesion of membrane to cementitious/masonry substrate surfaces, as provided by the following manufacturer:

1. Kemper System America, Inc.’s Kempertec EP/EP5 primer.

ii) Cold Weather Additive: Additive specifically designed to accelerate the resin reaction time at ambient temperatures below

50ºF (10ºC). Accelerator to be used with cream resin Component A prior to mixing of multi-component resin, as provided by the following manufacturer:

1. Kemper System America Inc.’s Kemperol A 2K-PUR Accelerator.

2.5 SURFACINGS AND COATING

A. Aggregate Finish Bonding Resin: Two-component polyurethane-based coating suitable for bonding aggregate, as provided by the following Manufacturer:

1. Kemper System America, Inc.’s Kemperol 2K-PUR Resin (without fleece)

B. Aggregate Finish Coating: Water-borne polyurethane-based coating suitable for use to both bond and seal aggregate, as provided by the following Manufacturer:

1. Kemper System America, Inc.’s Kemperdur ECO Finish

(transparent)

C. Aggregate Finish Coating: Water-borne acrylic-based coating suitable for use to both bond and seal aggregate, as provided by the following Manufacturer:

1. Kemper System America, Inc.’s Kemperdur BSF-R Finish

D. Aggregate Finish Coating: Polyurethane-based coating suitable for use to both bond and seal aggregate, as provided by the following

Manufacturer:

1. Kemper System America, Inc.’s Kemperdur Deko Transparent

2. Kemper System America, Inc.’s Kemperdur Deko 2KS-FR Finish

2.6 TRAFFIC-BEARING AGGREGATE SURFACING

A. Coating: Two-component polyurethane-based resin with graded

Section 07 56 10 Page 10 mineral filler, as provided by the following Manufacturer:

1. Kemper System America, Inc.’s Kemperdur TC Traffic Coating, Components A, B and C

B. Sealer: Single component polyurethane-based sealer, as provided by the following Manufacturer:

1. Kemper System America, Inc.’s Kemperdur Deko Transparent

2. Kemper System America, Inc.’s Kemperdur ECO Finish

(transparent)

C. Sealer: Two component epoxy-based sealer, as provided by the following Manufacturer:

1. Kemper System America, Inc.’s Kemperdur EP-FR Finish

2.7 ACCESSORIES

A. Application Tools, Accessories, and Cleaners: Supplied and/or approved by membrane manufacturer for product installation.

B. Solvent-Based Cleaner for Tools and Membrane Tie-Ins: Methyl

Ethyl Ketone (MEK) or acetone.

C. Water-Based Cleaner for Membrane: Simple Green HD.

D. Topcoat Surfacing Aggregate: Silica sand, ceramic-coated quartz, or specialty aggregate shall be washed, kiln-dried, and dust-free with the following size specification:

(1) Utility/Fire Rating: 0.5 - 1.2 mm

2. Alkalinity/Adhesion Key: 0.5 - 1.2 mm

3. Aesthetic/Pedestrian Traffic: 0.4 - 1.0 mm

E. Leveling and Patching Aggregate: Silica sand shall be washed, kiln-dried, and dust-free, suitable for troweling or pourable self-leveling, round grain or angular with the following size specification:

(1) For voids less than 1” in depth: #00 (0.3 - 0.6 mm)

(2) For voids 1” to 2” in depth: #0 (0.5 - 1.2 mm)

Mixing Proportions shall be a ratio of resin to sand at 1:2 by volume for leveling, 1:4 by volume for patching, or as approved by membrane manufacturer.

F. Backer Rod: Expanded, closed-cell polyethylene foam designed for use with cold-applied joint sealant.

G. Caulking: Single component, non-sag elastomeric polyurethane sealant meeting ASTM C920,Type S, Grade NS, Class 35 for use in sealing cracks and joints, and making watertight seals where required.

Section 07 56 10 Page 11

H. Wood Nailers and Cant Strips: New wood nailers and cant strips shall be pressure treated for rot resistance (e.g., "Wolmanized" or "Osmose K-33"), #2 or better lumber. Asphaltic or creosote treated lumber is not acceptable.

2.8 INSULATION COVER BOARD

Cementitious Cover Board (Permabase): High compressive strength underlayment board consisting of aggregated portland cement slurry with polymer-coated glass-fiber mesh, with the following characteristics:

1. Board Weight 2.5 lb/sq. ft

2. Board Size [48 x 96] inches

3. Board Thickness 1/2 inch

4. Thermal Conductivity R-value of 0.39 as determined by ASTM

C518

5. Board Edges square

2.9 INSULATION

Polyisocyanurate Insulation with Coated Glass Facers: With heavy-duty coated glass non-perforated facers meeting or exceeding the requirements for ASTM C1289-06, Type II, Class 2, Grade 2 (20 psi), 1.5 inch minimum thickness, with the following characteristics:

1. Board Density 2.0 lb/cu ft

2. Board Size 48x48 inches

3. Board Thickness 1 1/2 inches

4. Thermal Conductivity K factor of 0.17 as determined by

ASTM C177, aged 12 months at 75 degrees F

5. Board Edges square

2.10 INSULATION AND COVER BOARD SECUREMENT

Mechanical Fasteners: FM-approved corrosion resistant insulation fasteners of appropriate length with plates. Securement pattern shall be in accordance with specified wind uplift rating for system application. Roofing fasteners shall be a type approved by membrane and insulation manufacturer.

3 PART 3 EXECUTION

3.1 EXAMINATION

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

b. Verify deck/substrate openings, curbs, and protrusions through deck/substrate, wood cant strips and reglets are in place and solidly set.

Section 07 56 10 Page 12

c. Verify deck/substrate is structurally supported, secure and sound.

d. Submit to the Contracting Officer a written report, endorsed by

Installer, listing conditions detrimental to performance of the work.

e. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION OF SUBSTRATE

General: Surfaces to be prepared as a substrate for the new waterproofing system as follows:

(1) The contractor shall determine the condition of the existing structural deck/substrate. All defects in the deck or substrate shall be corrected before new waterproofing work commences. Areas of deteriorated deck/substrate, porous or other affected materials must be removed and replaced with new to match existing.

(2) Prepare flashing substrates as required for application of new waterproofing membrane flashings.

(3) Inspect substrates, and correct defects before application of new waterproofing. Fill all surface voids greater than 1/8 inch wide with an acceptable fill material.

(4) Remove all ponded water, snow, frost and/or ice from the work substrate prior to installing new waterproofing materials.

(5) The final substrate for waterproofing shall be clean, dry, free of loose, spalled or weak material including coatings, mineral aggregate, and flood coat/gravel surfacing, oil, grease, contaminants, abrupt changes in level, waterproofing agents, curing compounds, and free of projections which could damage membrane materials.

B. Steel/Metal:

1. Clean and prepare metal surfaces to near white metal in accordance with SSPC - SP3 (power tool clean) or as required by membrane manufacturer. Extend preparation a minimum of one

(1) inch beyond the termination of the membrane flashing materials.

2. In addition to cleaning, all metal surfaces shall be abraded to provide a rough open surface. A wire brush finish is not acceptable.

C. Wood/Plywood:

1. Plywood shall be identified with American Plywood Association

(APA) grade trade marks and shall meet the requirements of product standard PS1. Strip plywood joints with four inch

(4") wide strip of flashing membrane. Cover knot holes or cracks with strips of flashing membrane.

Section 07 56 10 Page 13

D. Other Flashing Surfaces:

1. Remove all contaminants as required by membrane manufacturer.

Surface preparation shall be performed by means approved by

Owner or his designated Representative.

E. Finish Leveling, Patching and Crack Preparation:

1. General: epoxy primer/sand mix is the preferred material for all concrete and masonry substrate finish leveling, crack and wall/deck preparation and patching. Epoxy primer/sand patching mix provides a set time of approximately twelve (12) hours and does not require surface grinding. Kemperol primer/sand mix is typically applied in conjunction with general surface priming.

3. Joint and Crack Preparation: Joints, cracks and fractures in the structural deck/substrate shall be prepared as defined below prior to installation of the waterproofing membrane.

Note: Joints, cracks, and fractures may telegraph through the waterproofing membrane.

a) Non-Moving Cracks, Joints, and Voids: Determine that crack/joint is non-moving. Clean out crack/joint by brushing and oil-free compressed air. Fill crack/joint with polyurethane sealant. Voids require the installation of backer rod or other backing material prior to application of the polyurethane sealant. Allow for a minimum of twelve (12) hours cure or as required by sealant Manufacturer.

b) Moving Cracks: Determine that crack is moving. Clean out crack by brushing and oil-free compressed air. Fill crack with polyurethane sealant. Allow for a minimum of twelve (12) hours cure or as required by sealant

Manufacturer. Following full curing of primer, apply waterproofing resin and 4 inch (10 cm) wide strip of membrane (resin and fleece) in strict accordance with

Membrane manufacturer’s written instructions.

3.3 WOOD NAILER LOCATION AND INSTALLATION

a. Install pressure-treated wood nailers as specified, and as required by the Membrane manufacturer. Wood nailers are required to match the thickness of insulation and cover board, and are to be secured directly to the structural deck. Wood nailers shall be installed at all roof edges and on either side of expansion joints, as well as beneath any equipment flanges.

b.Secure Wood Nailer: Wood nailers shall be firmly fastened to the deck. The wood nailer attachment must be able to resist a minimum force of 200 lbs. per lineal foot, in any direction. Mechanically fasten wood nailers as required to resist a force of 200 lbs per lineal foot, but with no less than 5 fasteners per 8 foot or 6

Section 07 56 10 Page 14 fasteners per 10 foot length of nailer. Refer to current FM Loss

Prevention Bulletin 1-49 for additional attachment recommendations.

3.4 INSULATION/COVER BOARD INSTALLATION

a. General: Insulation and cover board shall be installed in accordance with the insulation/cover board manufacturer's current published specifications and recommendations for use with adhered roofing.

b. Install Insulation/Cover Board: Install only as much insulation and cover board as can be primed, sealed, and protected before the end of the day's work or before the onset of inclement weather.

c. Fit Insulation/Cover Board: Neatly fit insulation/cover board to all penetrations, projections, and nailers.

Insulation shall be loosely butted, with gaps not greater than 1/4". All gaps greater than 1/4" shall be filled with acceptable insulation. Cover board shall be loosely butted, with gaps not greater than 1/4”. All gaps greater than 1/8” shall be filled with primer; all gaps greater than ¼” shall be filled with polyurethane sealant.

d. Strip In Insulation/Cover Board Joints: Strip all insulation/cover board joints with four inch (4") wide strip of flashing membrane. Under no circumstances shall the membrane be left unsupported over a space greater than

1/4".

e. Stagger Insulation/Cover Board Joints: When installing multiple layers of insulation, all joints between succeeding layers shall be staggered a minimum of 6" in each direction.

f. Steel Deck Substrates: Place boards perpendicular to steel deck flutes with edges over flute surface for bearing support. Edges shall be checked so that no edges are left substantially unsupported along the flutes.

g. Mechanical Attachment: Follow insulation/cover board and fastener manufacturers’ recommendations for the appropriate fastener and plate type, size and length.

Reference FM approvals for fastening patterns that satisfy

FM wind uplift requirements. Typical application is one fastener and plate per 2 square feet of insulation/cover board to be attached. Note: additional fasteners are required in the corner and perimeter regions of the roof.

Secure insulation/cover board in accordance with approval requirements.

Section 07 56 10 Page 15

3.5 PRIMER APPLICATION

A. General:

1. Mix and apply single and two-component primer in strict accordance with written instructions of Membrane

Manufacturer. Use only proprietary materials, as supplied by the membrane manufacturer.

2. The substrate surface must be dry, with any remaining dust or loose particles removed using clean, dry, oil-free compressed air, industrial vacuum, cloth wipe or a combination of methods.

3. Do not install primer on any substrate containing newly applied and/or active asphalt, coal-tar pitch, creosote or penta-based materials unless approved in writing by Membrane

Manufacturer. Some substrates may require additional preparation before applying primer.

B. Mixing of Kempertec EP and Kempertec D Primers:

1. Premix primer Component A thoroughly with a spiral agitator or stir stick. Pour primer Component B into Component A and mix the components for approximately 2 minutes with a clean spiral agitator on slow speed or stir stick without creating any bubbles or streaks. DO NOT AERATE. The Primer solution should be a uniform color, with no light or dark streaks present.

2. Do not thin primer. Determine required primer coverage for each substrate material/condition and apply in strict accordance with written instructions of Membrane

Manufacturer.

3. Mix only that amount of primer components A & B that can be used in 30 minutes.

C. Application of Primer:

1. Roll or brush the primer evenly onto the surface to fully saturate the substrate in one application. Do not allow primer to pond or collect in low areas. Follow manufacturer’s recommended application rates to ensure that a thin layer of cured primer remains on the substrate surface.

2. Apply primer only up to the edge of the membrane flashing terminations. Primer application past the membrane terminations requires surfacing with an approved material.

3. For EP/EP5 primer applications over cementitious substrates where protection from substrate wetness is required, apply primer coat at a heavier application rate until pore saturation is achieved.

Section 07 56 10 Page 16

4. For all EP/EP5 primer applications, apply kiln-dried sand into the final coat of EP/EP5 primer while still wet at the rate of 50 lbs. per 100 square feet.

5. Allow standard primers to cure for a minimum of twelve (12) hours before membrane application. Allow quick-dry primers to cure for a minimum of four (4) hours before membrane application. Membrane must be applied to primer only when completely dry and without tack.

6. Exposure of the primer in excess of eight (8) days or premature exposure to moisture may require removal and application of new primer. DO NOT apply new primer over exposed primer older than eight (8) days, primer prematurely exposed to moisture, or primer used as temporary waterproofing, unless approved in writing by the Membrane

D. Disposal of Primer:

1. Cured primer may be disposed of in standard landfills. This is accomplished by thoroughly mixing all components.

2. Uncured primer is considered a hazardous material and must be handled as such, in accordance with local, state and federal regulation. Do not through uncured resin away.

3.6 MEMBRANE APPLICATION

1. It is recommended to apply the waterproofing membrane immediately following full curing of the primer in order to obtain the best bond between primer and membrane.

2. Mix and apply cold fluid-applied reinforced polyurethane waterproofing membrane in strict accordance with written instructions of Membrane Manufacturer. Use only proprietary membrane resins and materials, as supplied by the membrane manufacturer.

3. The primed substrate surface shall be dry, with any remaining dust or loose particles removed using clean, dry, oil-free compressed air, industrial vacuum, cloth-wipe or a combination.

4. Protect all areas where membrane has been installed. Do not work off installed membrane during application of remaining work before forty-eight (48) hours of curing. Movement of materials and equipment across installed membrane is not acceptable. If movement is necessary, provide complete protection of affected areas.

5. Closely follow the Membrane Manufacturer's recommendation for hot and cold weather application. Monitor surface and ambient

Section 07 56 10 Page 17 temperatures, including the effects of wind chill.

B. Mixing of Kemperol 2K-PUR Resin:

1. Mix resin Component A (cream formulation) with a spiral agitator until the liquid is a uniform cream color. If the ambient temperature is below 50°F (10°C), then a weather related additive should be combined and mixed into the

Component A.

a) Accelerator should be added to resin Component A when the ambient temperature is 50°F (10°C) and below. The accelerator should be mixed with the spiral agitator for

2 minutes or until both liquids are thoroughly blended.

2. Pour resin Component B into Component A at a 4:1 ratio (by weight) and thoroughly mix the components with a clean spiral agitator. The Resin solution should be a uniform color, with no light or dark streaks present.

3. Mix only that amount of resin components A & B that can be used in 30 minutes.

C. Application of Resin/Fleece:

1. Apply mixed resin to the prepared surface at the manufacturer’s recommended application rate. The resin should be rolled or brushed liberally and evenly onto the surface using a broad, even stroke. Cover one working area at a time, between 15 – 20 ft.

(1.4 – 1.9 m

2. Roll out dry polyester fleece onto the liquid resin mix, making sure the SMOOTH SIDE IS FACING UP (natural unrolling procedure), avoiding any folds and wrinkles. The fleece will begin to rapidly saturate with the liquid resin mix. Use a medium nap roller or brush to work the resin into the fleece, saturating from the bottom up, and eliminating air bubbles, wrinkles, etc. The appearance of the saturated fleece should be light opaque amber with no white spots. White spots are indications of unsaturated fleece or lack of adhesion. It is important to correct these faults before the resin cures.

3. Apply additional liquid resin mix on top of fleece at the manufacturer’s recommended application rate to finish the saturation of the fleece. Roll this final coating into the fleece, which will result in a glossy appearance. The fleece can only hold so much resin and all excess should be rolled forward to the unsaturated fleece, eliminating ponding or excessive build-up of the resin. The correct amount of resin will leave no whiteness in fleece and there will be a slightly fibrous surface texture. The final resin coating should be smooth and uniform.

Section 07 56 10 Page 18

4. Approximately 2/3 of the total resin should be applied to the substrate below the fleece reinforcement, and 1/3 of the total resin should be applied over the fleece reinforcement.

5. Prevent contact between mixed/unmixed resin and new/existing membrane. If any unmixed resin contacts membrane surface remove immediately and clean thoroughly with a cloth rag.

6. At all fleece seams, allow a 2” (5 cm) overlap for all side joints and a 4” (10 cm) overlap for all end joints.

7. At membrane tie-offs, clean in-place membrane with MEK

(methyl ethyl ketone) solvent or acetone once resin has cured. Allow solvents to fully evaporate before application of new resin.

D. Disposal of Resin:

1. Cured resin may be disposed of in standard landfills. This is accomplished by thoroughly mixing all components.

2. Uncured resin is considered a hazardous material and must be handled as such, in accordance with local, state and federal regulation. Do not throw uncured resin away.

3.7 FLASHING APPLICATION

1. Install flashing system in accordance with the requirements/recommendations of the Membrane manufacturer and as depicted on standard drawings and details. Provide system with base flashing, edge flashing, penetration flashing, counter flashing, and all other flashings required for a complete watertight system.

2. Wherever possible, install the flashings before installing the field membrane to minimize foot traffic over newly installed field membrane.

3. All membrane flashings shall be installed concurrently with the waterproofing membrane as the job progresses. Temporary flashings are not allowed without prior written approval from the Membrane manufacturer. Should any water penetrate the new waterproofing membrane because of incomplete flashings, the affected area shall be removed and replaced at the contractor's expense.

4. Provide a minimum vertical height of 8" for all flashing terminations. Flashing height shall be at least as high as the potential water level that could be reached as a result of a deluging rain and/or poor slope. Do not flash over existing through-wall flashings, weep holes and overflow scuppers.

Section 07 56 10 Page 19

5. All flashings shall be terminated as required by the Membrane

6. Alkalinity surface protection consisting of one application of EP primer and one application of approved broadcast mineral aggregate surfacing shall be applied wherever stone, concrete, or masonry elements will be placed directly over the flashing.

B. Metal Flashing – General:

1. Metal flashings shall be fabricated in accordance with the current recommendations of SMACNA and in accordance with standard drawings and project details.

2. Metal flashing flanges to which membrane is to be bonded shall be a minimum of four (4) inches in width, and secured to the substrate or wood nailers six (6) inches on center staggered with fasteners appropriate to the substrate type. The flanges shall be provided with a roughened surface that has been cleaned of all oil and other residue.

3. Metal edges that will be overlaid with membrane shall be provided with a 1/4” min. hemmed edge.

4. Apply primer, resin and fleece to metal flange, extending membrane to outside face of metal edging, and to vertical face of metal base/curb flashing.

C. Membrane Flashing – General:

1. Membrane flashings shall be fabricated with primer appropriate for the substrate surface, resin of the same base chemical type as the field membrane, and fleece of the same weight as the field membrane unless specified otherwise.

2. Primer, resin, and fleece mixing and application methods as specified for field membranes are also suitable for membrane flashing.

3. Fleece shall overlap 2” (5 cm) minimum for all joints.

Fleece shall be cut neatly to fit all flashing conditions without a buildup of multiple fleece layers. Work wet membrane with a brush or roller to eliminate blisters, openings, or lifting at corners, junctions, and transitions.

D. Pipes, Conduits, and Unusually Shaped Penetrations:

1. Flashing is typically constructed as a two part assembly consisting of a vertical wrap and a horizontal target patch. There must be a minimum of a two (2) inch (5

cm) overlap between vertical and horizontal flashing components.

E. Flexible Penetrations:

1. Provide a weathertight gooseneck of round cross-section for

Section 07 56 10 Page 20 each penetration or group of penetrations. Set in water cut-off mastic and secure to the structural substrate.

2. Acceptable gooseneck material is copper, of a sheet weight appropriate for the application.

3. Flashing is typically constructed as a two part assembly consisting of a vertical wrap and a horizontal target patch. There must be a minimum of a two (2) inch (5

cm) overlap between vertical and horizontal flashing components.

F. Walls, Curbs and Base Flashings:

1. Wall, curb and base flashings shall be installed to solid substrate surfaces only. Adhering to gypsum-based panels, cementitious stucco, synthetic stucco, wood or metal siding, and other similar materials is not acceptable.

2. Reinforce all transition locations and other potential wear areas with a four (4) inch wide membrane strip evenly positioned over the transition prior to installing the exposed flashing layer.

3. Reinforce all inside and outside corners with a four (4) inch diameter conical piece of membrane prior to installing the exposed flashing layer.

4. All pins, dowels and other fixation elements shall be flashed separately with a vertical flashing component prior to installing the exposed flashing layer.

5. Extend flashing a minimum of four (4) inches onto the field substrate surface.

G. Electrical Conduit, Gas Lines

1. Supports for electrical conduit and gas lines greater than one (1) inch in diameter require the use of a separate engineered support system.

2. Supports for electrical conduit and gas lines one (1) inch or less in diameter, can be adhered directly to the membrane surface with a single-component, high quality polyurethane sealant.

3.8 MEMBRANE PREPARATION FOR SURFACINGS AND COATINGS

A. Membrane must be clean and dry, and free of all contaminants that may interfere with the adhesion of the surfacing and coating to the membrane surface.

B. Membrane exposed less than 48 hours prior to application of surfacing and coating materials does not require special surface preparation. It is highly recommended that all surfacing and coating materials be applied to the membrane surface within 48 hours.

Section 07 56 10 Page 21

C. Membrane exposed longer than 48 hours will require sanding/scuffing of the surface to remove the hard gloss finish, followed by an MEK or acetone solvent wipe.

3.9 SURFACINGS AND FINISHES

A. Aggregate Finish Surfacing

1. Where specified, provide and install approved kiln-dried silica sand, or other approved mineral surfacing to achieve an aesthetic and/or non-skid surface.

2. Pre-mix single-component and two-component coatings prior to application to achieve an even consistency.

3. Broadcast specified and approved sand or aggregate in excess into a bonding coat application of Membrane Manufacturer’s approved urethane-based or acrylic-based aggregate coating system applied over clean, cured membrane at the manufacturer’s recommended application rate. Aggregate shall be applied to excess to obtain uniform and full coverage.

4. Following minimum 24 hour cure time remove loose/un-embedded mineral aggregate by blowing with oil-free compressed air or with a vacuum. Re-broadcast clean mineral aggregate as required to provide full embedment and coverage of membrane.

5. Seal aggregate surface with a sealing coat application of

Membrane Manufacturer’s approved aggregate coating, applied at the manufacturer’s recommended application rate. After completion of surfacing, avoid any traffic for a minimum of three (3) days to allow for surfacing to cure.

B. Coating-Type Finish Surfacing

1. Where specified, provide and install Membrane

Manufacturer’s approved urethane-based or acrylic-based coating applied over clean, fully cured membrane at the manufacturer’s recommended application rate.

2. Pre-mix single-component and two-component coatings prior to application to achieve an even consistency and color. Mix thoroughly for approximately 2 minutes with a clean spiral agitator or stir stick without creating any bubbles or streaks. DO NOT AERATE.

3. Apply coating at the manufacturer’s recommended application rate. Two coating applications are recommended for best coverage and appearance. After completion of coating, avoid any traffic for a minimum of two (2) days to allow for surfacing to cure.

C. Alkalinity Protection

1. Where placement of concrete, mortar or adhesive setting beds are required over sections of the waterproofing membrane

Section 07 56 10 Page 22 or flashing, apply manufacturer’s epoxy primer/coating at the manufacturer’s recommended coverage rate, with broadcast to excess of kiln-dried silica sand into wet primer/coating.

2. Protection shall extend a minimum of one (1) foot

(0.3m) past the concrete form on all sides.

3. Provide continuous cleaning with water and brush to eliminate settlement of concrete residues on in-place waterproofing membrane adjacent to area of concrete placement.

3.10 TRAFFIC SURFACING

A. Mixing of Kemperdur TC Traffic Coating

1. Mix Component A (light brown formulation) and Component B

(white formulation) in a separate clean mixing bucket with a spiral Kemperol agitator for 1 minute, until the liquid is a uniform beige color.

2. Gradually add Component C (white graded fillers) to the liquid while mixing continues for an additional 1 minute until a smooth, lump free mix is produced.

3. Mix only that amount of surfacing that can be used in 10 minutes. Do not exceed mixing times.

B. Application of Surfacing and Aggregate

1. Empty mixing bucket of all Kemperdur TC Traffic Coating mix onto the prepared surface and spread with a ¼” x ¼” x ¼” notched metal trowel at the manufacturer’s specified coverage rate.

2. Allow the surfacing mix to self-level and reach an initial set for 10-20 minutes until material will retain a peak after being touched by a finger.

3. Broadcast aggregate to excess into surfacing until a uniform dry aggregate layer has been achieved. Aggregate will initially sink into surfacing, requiring the application of additional aggregate.

4. Allow the aggregate-filled surfacing to cure for approximately

2 hours, then remove excess aggregate by brooming and vacuuming.

C. Sealing

1. Apply specified Kemperdur finish sealer at the manufacturer’s specified coverage rate to provide a sealed, maintainable surface finish.

2. After completion of mineral aggregate surfacing, avoid any traffic for a minimum of three (3) days.

Section 07 56 10 Page 23

3.11 TEMPORARY CLOSURES AND WATERSTOPS

A. Contractor shall be responsible to ensure that moisture does not damage any completed section of the new waterproofing system.

Completion of flashings, terminations, and temporary closures shall be completed as required to provide a watertight condition.

All temporary closures shall be made as recommended or required by the membrane manufacturer.

3.12 PROTECTION

A. Upon completion of waterproofing and flashings

(including all associated work), institute appropriate procedures for surveillance and protection of roofing during remainder of construction period. Protect all areas where membrane has been installed

3.13 FLOOD TEST

A. A flood test of the completed membrane and flashing system shall be conducted prior to the installation of any overburden/surfacing.

The flood test shall be of a 24 hr. minimum duration, and shall apply a water head of 2” over the entire application area. Any incidents of water entry shall be evaluated and all necessary repairs conducted, followed by an additional flood test.

3.14 MANUFACTURER’S INSPECTION

Ensure manufacturer's technical representative visits the site a minimum of three times during the installation for purposes of reviewing materials installation practices and adequacy of work in place. After each inspection, submit a report, signed by the manufacturer's technical representative to the Contracting Officer within 3 working days. Note in the report overall quality of work, deficiencies and any other concerns, and recommended corrective action.

Submit three signed copies of the manufacturer's field inspection reports to the Contracting Officer within one week of substantial completion.

3.15 CLOSEOUT

A. Correction of Work:

1. Work that does not conform to specified requirements including tolerances, slopes, and finishes shall be corrected and/or replaced. Any deficiencies of membrane application, termination and/or protection as noted during the Membrane

Manufacturer’s inspections shall be corrected and/or replaced at Contractor’s expense.

B. Clean-Up:

1. Site clean-up, including both interior and exterior building areas that have been affected by construction, shall be restored to preconstruction condition.

Section 07 56 10 Page 24

3.16 INFORMATION FORM AND PLACARD

For each roof, furnish a typewritten information card for facility records and a card laminated in plastic and framed for interior display at roof access point, or a photoengraved 0.032 inch thick aluminum card for exterior display. Format as directed in paragraph titled "Form One".

Provide an information card 8 1/2 by 11 inches minimum,identifying the facility name and number; location; contract number; approximate roof area;

detailed roof system description, including deck type, roof membrane manufacturer and product name, type underlayment(s), date of completion;

installing contractor identification and contact information; manufacturer warranty expiration, warranty reference number, and contact information.

Install card at location as directed by the Contracting Officer and provide a paper copy to the Contracting Officer.

3.11 FORM ONE

FORM 1 - FLUID APPLIED MEMBRANE ROOFING SYSTEM AND COMPONENTS

1. Contract Number:

2. Building Number & Location:

3. Deck/Substrate Type:

4. Slopes of Deck/Roof Structure:

5. Insulation Type & Thickness:

6. Insulation Manufacturer:

7. Vapor Retarder: ( )Yes ( )No

8. Vapor Retarder Type:

9. Preformed Steel Standing Seam Roofing Description:

a. Manufacturer (Name, Address, & Phone No.):

b. Product Name: c. Width: d. Gage:

e. Base Metal: f. Method of Attachment:

10. Repair of Color Coating:

a. Coating Manufacturer (Name, Address & Phone No.):

b. Product Name:

c. Surface Preparation:

d. Recoating Formula:

e. Application Method:

11. Statement of Compliance or Exception:_________________________________

12. Date Roof Completed:

Section 07 56 10 Page 25

13. Warranty Period: From_______________ To_______________

14. Roofing Contractor (Name & Address):

15. Prime Contractor (Name & Address):

Contractor's Signature _________________________ Date:

Inspector's Signature _________________________ Date:

3.12 DATE OF INSTALLATION WALL-MOUNTED PLACARD

For each fluid-applied roof membrane installation, furnish an exterior "Date of Installation Placard", 0.032 inch thick aluminum, 8-1/2 inches high by 11 inches wide, with mounting accessories, photoengraved to include the following information:

Facility Name and Number

Approximate Roof Area Newly Installed and Date of Completion

Manufacturer, Type of Roof Membrane and Name

Underlayment and Insulation System, R value

Installing Contractor and Contact Information

Warranty Expiration Date

Warranty Reference Number and Contact Information

Install placard as directed by the Contracting Officer.

3.13 USACE WARRANTY

CONTRACTOR'S FIVE (5) YEAR NO…