AHS Roof Bid.pdf

SECTION 07 53 23

ADHERED EPDM ROOFING SYSTEM

60 Mil – 20 Year Warranty

PART 1 GENERAL

1.01 SUMMARY

A. Furnish and install elastomeric sheet roofing system, including:

1. Roofing manufacturer's requirements for the specified warranty.

2. Preparation of roofing substrates.

3. Wood nailers for roofing attachment.

4. Insulation

5. Coverboards

6. Elastomeric membrane roofing.

7. Metal roof edging.

8. Flashings.

9. Walkway pads.

10. Other roofing-related items specified or indicated on the drawings or otherwise necessary to provide a complete weatherproof roofing system.

B. Disposal of demolition debris and construction waste is the responsibility of Contractor. Perform disposal in manner complying with all applicable federal, state, and local regulations.

C. Comply with the published recommendations and instructions of the roofing membrane manufacturer, at www.firestonebpco.com

D. Commencement of work by the Contractor shall constitute acknowledgement by the Contractor that this specification can be satisfactorily executed, under the project conditions and with all necessary prerequisites for warranty acceptance by roofing membrane manufacturer. Any modification of the Contract Sum will be made in accordance with the stipulations of the Contract Documents stated elsewhere.

1.02 RELATED SECTIONS

A. Section 06 10 00 - Rough Carpentry: Wood nailers associated with roofing and roof insulation.

B. Section 07 62 00 - Sheet Metal Flashing and Trim: Formed metal flashing and trim items associated with roofing.

C. Section 07 72 00 - Roof Accessories: Roof hatches, vents, and manufactured curbs.

D. Section 22 10 00 - Plumbing Piping and Roof Drains.

1.03 REFERENCES

A. Referenced Standards: These standards form part of this specification only to the extent they are referenced as specification requirements.

A. ASTM C 1289 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board; 2013.

B. ASTM D 3273 - Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber; 2012.

C. ASTM D 4637 - Standard Specification for EPDM Sheet used in Single-Ply Roof Membrane; 2004.

D. ASTM D 4811 - Standard Specification for Nonvulcanized (Uncured) Rubber Sheet Used as Roof Flashing; 2004.

E. ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials; 2013a.

F. ASTM E 136 - Standard Test Method for Behavior of Materials in a Vertical Tube Furnace At 750 Degrees C; 2012.

G. FM 1-28 - Design Wind Loads; Factory Mutual System; 2007.

H. FM 1-29 - Roof Deck Securement and Above Deck Roof Components; Factory Mutual System; 2006.

I. FM 4470 - Approval Standard - Class I Roof Covers; current version.

J. PS 1 - Construction and Industrial Plywood; 2009.

K. PS 20 - American Softwood Lumber Standard; 2010.

L. SPRI ES-1 - Wind Design Standard for Edge Systems Used with Low Slope Roofing Systems; 2007. (ANSI/SPRI ES-1).

1.04 SUBMITTALS

A. Product Data:

1. Provide membrane manufacturer's printed data sufficient to show that all components of roofing system, including insulation and fasteners, comply with the specified requirements and with the membrane manufacturer's requirements and recommendations for the system type specified; include data for each product used in conjunction with roofing membrane.

2. Where UL or FM requirements are specified, provide documentation that shows that the roofing system to be installed is UL-Classified or FM-approved, as applicable; include data itemizing the components of the classified or approved system.

3. Installation Instructions: Provide manufacturer's instructions to installer, marked up to show exactly how all components will be installed; where instructions allow installation options, clearly indicate which option will be used.

B. Shop Drawings: Provide:

1. The roof membrane manufacturer's standard details customized for this project for all relevant conditions, including flashings, base tie-ins, roof edges, terminations, expansion joints, penetrations, and drains.

C. Pre-Installation Certification: Copy to show that manufacturer has accepted and approved the specified system to meet warranty and install requirements.

D. Executed Warranty.

1.05 QUALITY ASSURANCE

A. Applicator Qualifications: Roofing installer shall have the following:

1. Current Firestone Master Contractor status or ESP Applicator status.

2. At least five years’ experience in installing specified system.

3. Capability to provide payment and performance bond to building owner.

B. Pre-Installation Conference: Before start of roofing work, Contractor shall hold a meeting to discuss the proper installation of materials and requirements to achieve the warranty.

1. Require attendance with all parties directly influencing the quality of roofing work or affected by the performance of roofing work.

2. Notify Architect well in advance of meeting.

1.06 DELIVERY, STORAGE AND HANDLING

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

B. Store materials clear of ground and moisture with weather protective covering.

C. Keep combustible materials away from ignition sources.

1.07 WARRANTY

A. Comply with all warranty procedures required by manufacturer, including notifications, scheduling, and inspections.

B. Warranty: 20-year NDL Warranty covering membrane, roof insulation, and membrane accessories.

1. Limit of Liability: No dollar limitation.

2. Scope of Coverage: Repair leaks in the roofing system caused by:

a. Ordinary wear and tear of the elements.

b. Manufacturing defect in manufacturers brand materials.

c. Defective workmanship used to install these materials.

d. Damage due to winds up to 55 mph.

e. Roof Edge Metal including Fascia and Coping. (Edge-to-Edge Warranty)

3. Not Covered:

a. Damage due to winds in excess of 55 mph.

b. Damage due to hurricanes or tornadoes.

c. Hail.

d. Intentional damage.

e. Unintentional damage due to normal rooftop inspections, maintenance, or service.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. Acceptable Manufacturer - Roofing System:

1. Firestone Building Products Co., Nashville, TN. www.firestonebpco.com B. Roofing systems manufactured by others may be acceptable provided the roofing system is completely equivalent in materials and warranty conditions and the manufacturer meets the following qualifications:

a. Specializing in manufacturing the roofing system to be provided.

b. Minimum ten years of experience manufacturing the roofing system to be provided.

c. Able to provide polyisocyanurate insulation that is produced in own facilities.

B. Manufacturer of Insulation: Same manufacturer as roof membrane.

C. Manufacturer of Metal Roof Edging:

1. Hickman Edge Systems.

2. Metal roof edging products by other manufacturers are not acceptable.

3. Field- or shop-fabricated metal roof edgings are not acceptable.

D. Substitution Procedures: No Substitutions Allowed

2.02 ROOFING SYSTEM DESCRIPTION

A. Roofing System:

1. Membrane: Ethylene propylene diene monomer (EPDM).

2. Thickness: As specified elsewhere.

3. Membrane Attachment: Fully adhered.

4. Slope: None

5. Comply with applicable local building code requirements.

6. Provide assembly having Underwriters Laboratories, Inc. (UL) Class A Fire Hazard

Classification.

B. Insulation:

1. Areas A,B,C,D,E,G,H,J,K,L,M,N,P

a. Total System R Value: 20, minimum.

b. Maximum Board Thickness: 3 inches; use as many layers as necessary; stagger joints in adjacent layers.

a. Base Layer: Polyisocyanurate foam board, non-composite.

i. Attachment: Commonly fastened.

b. Top Layer: Polyisocyanurate foam board, non-composite.

i. Attachment: Mechanically fastened.

c. Tapered: 1/8” per foot tapered polyisocyanurate foam board, non-composite where designated.

i. Designed by MWA Commercial Roofing Solutions.

ii. Attachment: Low-rise polyurethane adhesive.

2. Area 0

a. Total System R Value: 20, minimum.

b. Maximum Board Thickness: 3 inches, use as many layers as necessary; stagger joints in adjacent layers.

a. Base Layer: Polyisocyanurate foam board, non-composite.

i. Attachment: Commonly fastened.

b. Top Layer : Polyisocyanurate foam board, non-composite.

i. Attachment: Mechanically fastened.

d. Tapered: 1/8” per foot tapered polyisocyanurate foam board, non-composite where designated.

i. Designed by MWA Commercial Roofing Solutions.

ii. Attachment: Low-rise polyurethane adhesive.

D. Crickets and Saddles: Tapered insulation of same type as specified for top layer; slope as indicated.

1. Attachment: Low-rise polyurethane adhesive.

E. Cover Board: Fiberglass Mat, Water Resistant Gypsum Roof Board

1. Areas F,I

a. Attachment:Low-rise polyurethane adhesive.

2.03 EPDM MEMBRANE MATERIALS

A. Roofing and Flashing Membrane: Black cured synthetic single-ply membrane composed of ethylene propylene diene terpolymer (EPDM) with the following properties:

1. Reinforcement: None; membrane complying with ASTM D 4637 Type I.

2. Thickness: 0.060 inch.

3. Nominal Thickness Tolerance: Plus/minus 10 percent.

4. Sheet Width: Provide the widest available sheets to minimize field seaming.

5. Acceptable Product:

a. RubberGard EPDM Membrane by Firestone.

B. Insulation Fasteners: Type and size as required by roof membrane manufacturer for roofing system and warranty to be provided; use only fasteners furnished by roof membrane manufacturer.

C. Low Rise Polyurethane Adhesive: Two-component, low-rise polyurethane adhesive designed to attach roofing insulation to a variety of acceptable substrates; Manufacturer’s standard.

D. Use accessories and flashings of like color to the primarily specified field EPDM membrane.

E. Flashing Membrane: Self-curing, non-reinforced membrane composed of nonvulcanized EPDM rubber, complying with ASTM D 4811 Type II, and with the following properties:

1. Thickness: 0.055 inch (1.4 mm).

2. Acceptable Product: Manufacturer’s standard.

F. Self-Adhesive Flashing Membrane: Semi-cured 45 mil EPDM membrane laminated to 35 mil (0.9

mm) EPDM tape adhesive; Manufacturer’s standard.

G. Pre-Molded Pipe Flashings: EPDM, molded for quick adaptation to different sized pipes;

Manufacturer’s standard.

H. Self-Adhesive Lap Splice Tape: 35 mil (0.9 mm) EPDM-based, formulated for compatibility with EPDM membrane and high-solids primer; Manufacturer’s standard.

I. Splice Adhesive: Synthetic polymer-based, formulated for compatibility with EPDM membrane and metal surfaces; Manufacturer’s standard.

J. Bonding Adhesive: Neoprene-based, formulated for compatibility with EPDM membrane and wide variety of substrate materials, including masonry, wood, and insulation facings;

Manufacturer’s standard.

K. Adhesive Primer: Synthetic rubber based primer formulated for compatibility with EPDM membrane and tape adhesive, with VOC content less than 2.1 lb/gal (250 g/L); Manufacturer’s standard.

L. Seam Edge Treatment: EPDM rubber-based sealant, formulated for sealing exposed edges of membrane at seams; Manufacturer’s standard.

M. Pourable Sealer: One-part polyurethane; Manufacturer’s standard.

N. Water Block Seal: Butyl rubber sealant for use between two surfaces, not exposed;

Manufacturer’s standard.

O. Metal Plates and Strips Used for Fastening Membrane and Insulation: Steel with Galvalume coating; corrosion-resistance meeting FM 4470 criteria.

P. Termination Bars: Aluminum bars with integral caulk ledge; 1.3 inches (33 mm) wide by 0.10 inch (2.5 mm) thick; Manufacturer’s standard.

Q. Roof Walkway Pads: EPDM, 0.30 inch (7.6 mm) thick by 30 by 30 inches (760 by 760 mm) with EPDM tape adhesive strips laminated to the bottom; Manufacturer’s standard.

2.05 ROOF INSULATION AND COVER BOARDS

A. Polyisocyanurate Board Insulation: Closed cell polyisocyanurate foam with black glass reinforced mat laminated to faces, complying with ASTM C 1289 Type II Class 1, with the following additional characteristics:

1. Thickness: As indicated elsewhere.

2. Size: 48 inches (1220 mm) by 96 inches (2440 mm), nominal.

a. Exception: Insulation to be attached using adhesive may be no larger than 48 inches (1220 mm) by 48 inches (1220 mm), nominal.

3. R-Value (LTTR): 1.0 inch (25 mm) Thickness: 5.7 R, minimum.

4. Compressive Strength: 20 psi (138 kPa) when tested in accordance with ASTM C 1289.

5. Acceptable Product: Firestone Iso 95+ GL insulation.

B. Glass Mat, Water Resistant Gypsum Roof Board: Non-combustible, water-resistant gypsum core with embedded glass mat facers, complying with ASTM C 1177/C 1177M, and with the following additional characteristics:

1. Size: 48 inches (1220 mm) by 96 inches (2440 mm), nominal.

2. Exception: Board to be attached using adhesive or asphalt may be no larger than 48 inches

(1220 mm) by 48 inches (1220 mm), nominal.

3. Thickness: 0.50 inch.

4. Surface Water Absorption (ASTM C 473): Nominal 1.0 g.

5. Water Absorption (ASTM C 473): Less than 5% of weight.

6. Spanning Capability: Recommended by manufacturer for following minimum flute spans:

7. Surface Burning Characteristics: Flame spread of 0, smoke developed of 0, when tested in accordance with ASTM E 84.

8. Combustibility: Non-combustible, when tested in accordance with ASTM E 136.

9. Factory Mutual approved for use with FM 1-60 and 1-90 rated roofing assemblies.

10. Mold Growth Resistance: Zero growth, when tested in accordance with ASTM D 3273 for minimum of 4 weeks.

11. Acceptable Product: DensDeck Prime with Eonic Technology by Georgia Pacific

C. Insulation Fasteners: Type and size as required by roof membrane manufacturer for roofing system and warranty to be provided; use only fasteners furnished by roof membrane manufacturer.

D. Adhesive for Insulation Attachment: Type as required by roof membrane manufacturer for roofing system and warranty to be provided; use only adhesives furnished by roof membrane manufacturer.

2.06 METAL ACCESSORIES

A. Metal Roof Edging and Fascia: Continuous metal edge member serving as termination of roof membrane and retainer for metal fascia; watertight with no exposed fasteners; mounted to roof edge nailer.

1. Wind Performance:

a. Membrane Pull-Off Resistance: 110 lbs/ft (1460 N/m), minimum, when tested in accordance with ANSI/SPRI ES-1 Test Method RE-1, current edition.

b. Fascia Pull-Off Resistance: At least the minimum required when tested in accordance with ANSI/SPRI ES-1 Test Method RE-2, current edition.

2. Description: Three-piece; galvanized steel sheet edge member securing top and bottom edges of formed metal fascia; Hickman TerminEdge

3. Fascia Face Height: Field Verify. To extend min. 0.5” beyond extend of existing edge metal.

4. Edge Member Height Above Nailer: Maximum 3/4 inch.

5. Length: Maximum 120 inches.

6. Functional Characteristics: Fascia retainer supports while allowing for free thermal cycling of fascia.

7. Fascia Material and Finish: 24 gage steel with Kynar 500 finish in manufacturer’s standard color.

8. Anchor Bar Cleat: 20 gauge, 0.036 inch (0.9 mm) G90 coated commercial type galvanized steel with pre-punched holes.

9. Curved Applications: Factory modified.

10. Fasteners: Factory-provided corrosion resistant fasteners, with drivers; no exposed fasteners permitted.

11. Special Shaped Components: Provide factory-fabricated pieces necessary for complete installation, including miters, scuppers, and end caps; minimum 12 inch long legs on corner pieces.

12. Scuppers: Welded watertight.

13. Accessories: Provide matching brick wall cap, downspout, extenders, and other special fabrications as shown on the drawings.

2.07 ACCESSORY MATERIALS

A. Wood Nailers: PS 20 dimension lumber, Structural Grade No. 2 or better Southern Pine, Douglas Fir; or PS 1, APA Exterior Grade plywood; pressure preservative treated.

1. Width: 3-1/2 inches (90 mm), nominal minimum, or as wide as the nailing flange of the roof accessory to be attached to it.

2. Thickness: Same as thickness of roof insulation.

PART 3 INSTALLATION

3.01 GENERAL

A. Install roofing, insulation, flashings, and accessories in accordance with roofing manufacturer's published instructions and recommendations for the specified roofing system. Where manufacturer provides no instructions or recommendations, follow good roofing practices and industry standards. Comply with federal, state, and local regulations.

B. Obtain all relevant instructions and maintain copies at project site for duration of installation period.

C. Do not start work until Pre-Installation Notice or Notice of Award has been submitted to manufacturer as notification that this project requires a manufacturer's warranty.

D. Perform work using competent and properly equipped personnel.

E. Temporary closures, which ensure that moisture does not damage any completed section of the new roofing system, are the responsibility of the applicator. Completion of flashings, terminations, and temporary closures shall be completed as required to provide a watertight condition.

F. Install roofing membrane only when surfaces are clean, dry, smooth and free of snow or ice; do not apply roofing membrane during inclement weather or when ambient conditions will not allow proper application; consult manufacturer for recommended procedures during cold weather. Do not work with sealants and adhesives when material temperature is outside the range of 60 to 80 degrees F (15 to 25 degrees C).

G. Protect adjacent construction, property, vehicles, and persons from damage related to roofing work; repair or restore damage caused by roofing work.

1. Protect from spills and overspray from bitumen, adhesives, sealants and coatings.

2. Particularly protect metal, glass, plastic, and painted surfaces from bitumen, adhesives, and sealants within the range of wind-borne overspray.

3. Protect finished areas of the roofing system from roofing related work traffic and traffic by other trades.

H. Until ready for use, keep materials in their original containers as labeled by the manufacturer.

I. Consult membrane manufacturer's instructions, container labels, and Material Safety Data Sheets (MSDS) for specific safety instructions. Keep all adhesives, sealants, primers and cleaning materials away from all sources of ignition.

3.02 EXAMINATION

A. Examine roof deck to determine that it is sufficiently rigid to support installers and their mechanical equipment and that deflection will not strain or rupture roof components or deform deck.

B. Verify that surfaces and site conditions are ready to receive work. Correct defects in the substrate before commencing with roofing work.

C. Examine roof substrate to verify that it is properly sloped to drains.

D. Verify that the specifications and drawing details are workable and not in conflict with the roofing manufacturer's recommendations and instructions; start of work constitutes acceptable of project conditions and requirements.

3.03 PREPARATION

A. Take appropriate measures to ensure that fumes from adhesive solvents are not drawn into the building through air intakes.

B. Prior to proceeding, prepare roof surface so that it is clean, dry, and smooth, and free of sharp edges, fins, roughened surfaces, loose or foreign materials, oil, grease and other materials that may damage the membrane.

C. Fill all surface voids in the immediate substrate that are greater than 1/4 inch (6 mm) wide with fill material acceptable insulation to membrane manufacturer.

D. Seal, grout, or tape deck joints, where needed, to prevent material seepage into building.

3.05 INSULATION AND COVERBOARD INSTALLATION

A. Install insulation in configuration and with attachment method(s) specified in PART 2, under Roofing System.

B. Install only as much insulation as can be covered with the completed roofing system before the end of the day's work or before the onset of inclement weather.

C. Lay roof insulation in courses parallel to roof edges.

D. Neatly and tightly fit insulation to all penetrations, projections, and nailers, with gaps not greater than 1/4 inch (6 mm). Fill gaps greater than 1/4 inch (6 mm) with acceptable insulation. Do not leave the roofing membrane unsupported over a space greater than 1/4 inch (6 mm).

E. Mechanical Fastening: Using specified fasteners and insulation plates engage fasteners through insulation into deck to depth and in specified in PART 2 and membrane manufacturer, whichever is more stringent.

F. Adhesive Attachment: Apply in accordance with membrane manufacturer's instructions and recommendations; "walk-in" individual roof insulation boards to obtain maximum adhesive contact.

3.06 SINGLE-PLY MEMBRANE INSTALLATION

A. Beginning at low point of roof, place membrane without stretching over substrate and allow to relax at least 30 minutes before attachment or splicing; in colder weather allow for longer relax time.

B. Lay out the membrane pieces so that field and flashing splices are installed to shed water.

C. Install membrane without wrinkles and without gaps or fishmouths in seams; bond and test seams and laps in accordance with membrane manufacturer's instructions and details.

D. Install membrane adhered to the substrate, with edge securement as specified.

E. Adhered Membrane: Bond membrane sheet to substrate using membrane manufacturer's recommended bonding material, application rate, and procedures.

1. Edge Securement: Secure membrane at all locations where membrane terminates or goes through an angle change greater than 2 in 12 inches (1:6 ) using mechanically fastened reinforced perimeter fastening strips, plates, or metal edging as indicated or as recommended by roofing manufacturer.

2. Exceptions: Round pipe penetrations less than 18 inches (460 mm) in diameter and square penetrations less than 4 inches (200 mm) square.

F. Metal edging is not merely decorative; ensure anchorage of membrane as intended by roofing manufacturer.

3.07 FLASHING AND ACCESSORIES INSTALLATION

A. Install flashings, including laps, splices, joints, bonding, adhesion, and attachment, as required by membrane manufacturer's recommendations and details.

B. Metal Accessories: Install metal edgings, gravel stops, and copings in locations indicated on the drawings, with horizontal leg of edge member over membrane and flashing over metal onto membrane.

1. Follow roofing manufacturer's instructions.

2. Remove protective plastic surface film immediately before installation.

3. Install water block sealant under the membrane anchorage leg.

4. Flash with manufacturer's recommended flashing sheet unless otherwise indicated.

5. Where single application of flashing will not completely cover the metal flange, install additional piece of flashing to cover the metal edge.

6. If the roof edge includes a gravel stop and sealant is not applied between the laps in the metal edging, install an additional piece of self-adhesive flashing membrane over the metal lap to the top of the gravel stop; apply seam edge treatment at the intersections of the two flashing sections.

7. When the roof slope is greater than 1:12, apply seam edge treatment along the back edge of the flashing.

C. Flashing at Walls, Curbs, and Other Vertical and Sloped Surfaces: Install weathertight flashing at all walls, curbs, parapets, curbs, skylights, and other vertical and sloped surfaces that the roofing membrane abuts to; extend flashing at least 8 inches (200 mm) high above membrane surface.

1. Use the longest practical flashing pieces.

2. Evaluate the substrate and overlay and adjust installation procedure in accordance with membrane manufacturer's recommendations.

3. Complete the splice between flashing and the main roof sheet with specified splice adhesive before adhering flashing to the vertical surface.

4. Provide termination directly to the vertical substrate as shown on roof drawings.

D. Roof Drains:

1. Taper insulation around drain to provide smooth transition from roof surface to drain. Use specified pre-manufactured tapered insulation with facer or suitable bonding surface to achieve slope; slope not to exceed manufacturer's recommendations.

2. Position membrane, then cut a hole for roof drain to allow 1/2 to 3/4 inch (12 to 19 mm) of membrane to extend inside clamping ring past drain bolts.

3. Make round holes in membrane to align with clamping bolts; do not cut membrane back to bolt holes.

4. Apply sealant on top of drain bowl where clamping ring seats below the membrane

5. Install roof drain clamping ring and clamping bolts; tighten clamping bolts to achieve constant compression.

E. Flashing at Penetrations: Flash all penetrations passing through the membrane; make flashing seals directly to the penetration.

1. Pipes, Round Supports, and Similar Items: Flash with specified pre-molded pipe flashings wherever practical; otherwise use specified self-curing elastomeric flashing.

2. Pipe Clusters and Unusual Shaped Penetrations: Provide penetration pocket at least 2 inches (50 mm) deep, with at least 1 inch (25 mm) clearance from penetration, sloped to shed water.

3. Structural Steel Tubing: If corner radii are greater than 1/4 inch (6 mm) and longest side of tube does not exceed 12 inches (305 mm), flash as for pipes; otherwise, provide a standard curb with flashing.

4. Flexible and Moving Penetrations: Provide weathertight gooseneck set in sealant and secured to deck, flashed as recommended by manufacturer.

3.08 FINISHING AND WALKWAY INSTALLATION

A. Install walkways at access points to the roof, around rooftop equipment that may require maintenance, and where indicated on the drawings.

1. Use specified walkway pads unless otherwise indicated.

B. Walkway Pads: Adhere to the roofing membrane, spacing each pad at minimum of 1.0 inch (25

mm) and maximum of 3.0 inches (75 mm) from each other to allow for drainage.

1. If installation of walkway pads over field fabricated splices or within 6 inches (150 mm) of a splice edge cannot be avoided, adhere another layer of flashing over the splice and extending beyond the walkway pad a minimum of 6 inches (150 mm) on either side.

2. Prime the membrane, remove the release paper on the pad, press in place, and walk on pad to ensure proper adhesion.

3.09 FIELD QUALITY CONTROL

A. Inspection by Manufacturer: Provide final inspection of the roofing system by a Technical

Representative employed by roofing system manufacturer specifically to inspect installation for warranty purposes (i.e. not a sales person).

B. Perform all corrections necessary for issuance of warranty.

3.10 CLEANING

A. Clean all contaminants generated by roofing work from building and surrounding areas, including bitumen, adhesives, sealants, and coatings.

B. Repair or replace building components and finished surfaces damaged or defaced due to the work of this section; comply with recommendations of manufacturers of components and surfaces.

C. Remove leftover materials, trash, debris, equipment from project site and surrounding areas.

3.11 PROTECTION

A. Where construction traffic must continue over finished roof membrane, provide durable protection and replace or repair damaged roofing to original condition.

END OF SECTION