HomeMy WebLinkAbout077200 Roof Accessories.pdf smallkane
ROOF ACCESSORIES 077200 - 1
SECTION 077200 - ROOF ACCESSORIES
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Roof curbs.
2. Equipment supports.
3. Pipe supports.
4. Preformed flashing sleeves.
B. Related Sections:
1. Division 05 Section "Metal Fabrications" for metal vertical ladders, ships' ladders, and
stairs for access to roof hatches.
2. Division 05 Section "Pipe and Tube Railings" for safety railing systems not attached to
roof-hatch curbs.
3. Division 07 low-slope roofing Sections for roofing accessories.
4. Division 07 Section "Sheet Metal Flashing and Trim" for shop- and field-formed metal
flashing, roof-drainage systems, roof expansion-joint covers, and miscellaneous sheet
metal trim and accessories.
5. Division 07 Section "Roof Specialties" for manufactured fasciae, copings, gravel stops,
gutters and downspouts, and counterflashing.
6. Division 07 Section "Manufactured Roof Expansion Joints" for manufactured roof
expansion-joint covers.
7. Division 23 Section "HVAC Power Ventilators" for power roof-mounted ventilators.
1.3 PERFORMANCE REQUIREMENTS
A. General Performance: Roof accessories shall withstand exposure to weather and resist
thermally induced movement without failure, rattling, leaking, or fastener disengagement due to
defective manufacture, fabrication, installation, or other defects in construction.
1.4 SUBMITTALS
A. Product Data: For each type of roof accessory indicated. Include construction details, material
descriptions, dimensions of individual components and profiles, and finishes.
smallkane
ROOF ACCESSORIES 077200 - 2
B. Shop Drawings: For roof accessories. Include plans, elevations, keyed details, and attachments
to other work. Indicate dimensions, loadings, and special conditions. Distinguish between
plant- and field-assembled work.
C. Samples: For each exposed product and for each color and texture specified, prepared on
Samples of size to adequately show color.
D. Coordination Drawings: Roof plans, drawn to scale, and coordinating penetrations and roof-
mounted items. Show the following:
1. Size and location of roof accessories specified in this Section.
2. Method of attaching roof accessories to roof or building structure.
3. Other roof-mounted items including mechanical and electrical equipment, ductwork,
piping, and conduit.
4. Required clearances.
E. Operation and Maintenance Data: For roof accessories to include in operation and maintenance
manuals.
F. Warranty: Sample of special warranty.
1.5 COORDINATION
A. Coordinate layout and installation of roof accessories with roofing membrane and base flashing
and interfacing and adjoining construction to provide a leakproof, weathertight, secure, and
noncorrosive installation.
B. Coordinate dimensions with rough-in information or Shop Drawings of equipment to be
supported.
1.6 WARRANTY
A. Special Warranty on Painted Finishes: Manufacturer's standard form in which manufacturer
agrees to repair finishes or replace roof accessories that show evidence of deterioration of
factory-applied finishes within specified warranty period.
1. Fluoropolymer Finish: Deterioration includes, but is not limited to, the following:
a. Color fading more than 5 Hunter units when tested according to ASTM D 2244.
b. Chalking in excess of a No. 8 rating when tested according to ASTM D 4214.
c. Cracking, checking, peeling, or failure of paint to adhere to bare metal.
2. Finish Warranty Period: 20 years from date of Substantial Completion.
smallkane
ROOF ACCESSORIES 077200 - 3
PART 2 - PRODUCTS
2.1 METAL MATERIALS
A. Copper Sheet: ASTM B 370, manufacturer's standard temper.
2.2 MISCELLANEOUS MATERIALS
A. General: Provide materials and types of fasteners, protective coatings, sealants, and other
miscellaneous items required by manufacturer for a complete installation.
B. Wood Nailers: Softwood lumber, pressure treated with waterborne preservatives for
aboveground use, acceptable to authorities having jurisdiction, containing no arsenic or
chromium, and complying with AWPA C2; not less than 1-1/2 inches (38 mm) thick.
C. Bituminous Coating: Cold-applied asphalt emulsion complying with ASTM D 1187.
D. Underlayment:
1. Felt: ASTM D 226, Type II (No. 30), asphalt-saturated organic felt, nonperforated.
2. Polyethylene Sheet: 6-mil- (0.15-mm-) thick polyethylene sheet complying with
ASTM D 4397.
3. Slip Sheet: Building paper, 3-lb/100 sq. ft. (0.16-kg/sq. m) minimum, rosin sized.
E. Fasteners: Roof accessory manufacturer's recommended fasteners suitable for application and
metals being fastened. Match finish of exposed fasteners with finish of material being fastened.
Provide nonremovable fastener heads to exterior exposed fasteners. Furnish the following
unless otherwise indicated:
1. Fasteners for Zinc-Coated or Aluminum-Zinc Alloy-Coated Steel: Series 300 stainless
steel or hot-dip zinc-coated steel according to ASTM A 153/A 153M or ASTM F 2329.
2. Fasteners for Aluminum Sheet: Aluminum or Series 300 stainless steel.
3. Fasteners for Copper Sheet: Copper, hardware bronze, or passivated Series 300 stainless
steel.
4. Fasteners for Stainless-Steel Sheet: Series 300 stainless steel.
F. Gaskets: Manufacturer's standard tubular or fingered design of neoprene, EPDM, PVC, or
silicone or a flat design of foam rubber, sponge neoprene, or cork.
G. Elastomeric Sealant: ASTM C 920, elastomeric polyurethane or silicone polymer sealant as
recommended by roof accessory manufacturer for installation indicated; low modulus; of type,
grade, class, and use classifications required to seal joints and remain watertight.
H. Butyl Sealant: ASTM C 1311, single-component, solvent-release butyl rubber sealant;
polyisobutylene plasticized; heavy bodied for expansion joints with limited movement.
I. Asphalt Roofing Cement: ASTM D 4586, asbestos free, of consistency required for application.
smallkane
ROOF ACCESSORIES 077200 - 4
2.3 ROOF CURBS
A. Roof Curbs: Internally reinforced roof-curb units with integral spring-type vibration isolators
and capable of supporting superimposed live and dead loads, including equipment loads and
other construction indicated on Drawings; with welded or mechanically fastened and sealed
corner joints, integral metal cant, and integrally formed deck-mounting flange at perimeter
bottom.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. AES Industries, Inc.
b. Curbs Plus, Inc.
c. Custom Solution Roof and Metal Products.
d. Greenheck Fan Corporation.
e. LM Curbs.
f. Metallic Products Corp.
g. Milcor Inc.; Commercial Products Group of Hart & Cooley, Inc.
h. Pate Company (The).
i. Roof Products, Inc.
j. Safe Air of Illinois.
k. Thybar Corporation.
l. Vent Products Co., Inc.
B. Size: Coordinate dimensions with roughing-in information or Shop Drawings of equipment to
be supported.
C. Loads: See Mechanical.
D. Material: Aluminum sheet, 0.090 inch (2.28 mm) thick.
1. Finish: Mill.
2. Color: Dark bronze.
E. Construction:
1. Insulation: Factory insulated with 1-1/2-inch- (38-mm-) thick cellulosic or glass-fiber
board insulation.
2. Liner: Same material as curb, of manufacturer's standard thickness and finish.
3. Factory-installed wood nailer at top of curb, continuous around curb perimeter.
4. On ribbed or fluted metal roofs, form deck-mounting flange at perimeter bottom to
conform to roof profile.
5. Fabricate curbs to minimum height of 12 inches (300 mm) unless otherwise indicated.
6. Top Surface: Level around perimeter with roof slope accommodated by sloping the
deck-mounting flange.
7. Sloping Roofs: Where roof slope exceeds 1:48, fabricate curb with perimeter curb height
tapered to accommodate roof slope so that top surface of perimeter curb is level. Equip
unit with water diverter or cricket on side that obstructs water flow.
8. Security Grille: Provide where indicated.
smallkane
ROOF ACCESSORIES 077200 - 5
2.4 EQUIPMENT SUPPORTS
A. Equipment Supports: Internally reinforced metal equipment supports capable of supporting
superimposed live and dead loads, including equipment loads and other construction indicated
on Drawings; with welded or mechanically fastened and sealed corner joints, integral metal
cant, and integrally formed deck-mounting flange at perimeter bottom.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. AES Industries, Inc.
b. Curbs Plus, Inc.
c. Custom Solution Roof and Metal Products.
d. Greenheck Fan Corporation.
e. LM Curbs.
f. Milcor Inc.; Commercial Products Group of Hart & Cooley, Inc.
g. Pate Company (The).
h. Roof Products, Inc.
i. Thybar Corporation.
j. Vent Products Co., Inc.
B. Size: Coordinate dimensions with roughing-in information or Shop Drawings of equipment to
be supported.
C. Loads: See Mechanical.
D. Material: Aluminum sheet, 0.090 inch (2.28 mm) thick.
1. Finish: Mill.
2. Color: Dark bronze.
E. Construction:
1. Insulation: Factory insulated with 1-1/2-inch- (38-mm-) thick cellulosic or glass-fiber
board insulation.
2. Liner: Same material as equipment support, of manufacturer's standard thickness and
finish.
3. Factory-installed continuous wood nailers 3-1/2 inches (90 mm) wide at tops of
equipment supports.
4. Metal Counterflashing: Manufacturer's standard, removable, fabricated of same metal
and finish as equipment support.
5. On ribbed or fluted metal roofs, form deck-mounting flange at perimeter bottom to
conform to roof profile.
6. Fabricate equipment supports to minimum height of 12 inches (300 mm) unless
otherwise indicated.
7. Sloping Roofs: Where roof slope exceeds 1:48, fabricate each support with height to
accommodate roof slope so that tops of supports are level with each other. Equip
supports with water diverters or crickets on sides that obstruct water flow.
8. Security Grille: Provide where indicated.
smallkane
ROOF ACCESSORIES 077200 - 6
2.5 GRAVITY VENTILATORS
A. Low-Profile, Cylindrical-Style Gravity Ventilators: Manufacturer's standard, fabricated as
indicated, with manufacturer's standard welded or sealed mechanical joints.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. Active Ventilation Products, Inc.
b. Greenheck Fan Corporation.
c. Loren Cook Company.
d. Metallic Products Corp.
e. Thaler Metal USA Inc.
2. Construction: Integral base flange, vent cylinder, cylinder bird screen, and rain cap.
3. Dimensions: As indicated on Drawings.
4. Configuration: As indicated on Drawings.
5. Bird Screens: Manufacturer's standard mesh with rewireable frame.
6. Insect Screens: Manufacturer's standard mesh with rewireable frame.
7. Vent Cylinder, Base Flange, and Rain-Cap Material: Aluminum sheet, of manufacturer's
standard thickness.
8. Finish: As indicated by manufacturer's designations.
2.6 PIPE SUPPORTS
A. Pipe Supports: Adjustable-height, extruded-aluminum tube, filled with urethane insulation; 2
inches (50 mm) in diameter; with aluminum baseplate, EPDM base seal, manufacturer's
recommended hardware for mounting to structure or structural roof deck as indicated, and
extruded-aluminum carrier assemblies; suitable for quantity of pipe runs and sizes.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. Thaler Metal USA Inc.
2. Pipe Support Height: As indicated on Drawings.
3. Roller Assembly: With stainless-steel roller, sized for supported pipes.
4. Pipe Support Flashing: Manufacturer's standard insulated sleeve flashing with integral
base flange; aluminum sheet, 0.063 inch (1.60 mm) thick.
5. Finish: Manufacturer's standard.
B. Light-Duty Pipe Supports: Extruded-aluminum base assembly and Type 304 stainless-steel
roller assembly for pipe sizes indicated, including manufacturer's recommended load-
distributing baseplate.
smallkane
ROOF ACCESSORIES 077200 - 7
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. Thaler Metal USA Inc.
2. Finish: Manufacturer's standard.
C. Duct Supports: Extruded-aluminum, urethane-insulated supports, 2 inches (50 mm) in
diameter; with manufacturer's recommended hardware for mounting to structure or structural
roof deck.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. Thaler Metal USA Inc.
2. Finish: Manufacturer's standard.
2.7 PREFORMED FLASHING SLEEVES
A. Exhaust Vent Flashing: Double-walled metal flashing sleeve or boot, insulation filled, with
integral deck flange, 12 inches (300 mm) high, with removable metal hood and slotted
perforated metal collar.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. Custom Solution Roof and Metal Products.
b. Thaler Metal USA Inc.
2. Metal: Copper sheet, 16 oz. (0.55 mm) thick.
3. Finish: Manufacturer's standard.
B. Vent Stack Flashing: Metal flashing sleeve, uninsulated, with integral deck flange.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
the following:
a. Custom Solution Roof and Metal Products.
b. Milcor Inc.; Commercial Products Group of Hart & Cooley, Inc.
c. Thaler Metal USA Inc.
2. Metal: Copper sheet, 16 oz. (0.55 mm) thick.
3. Height: 7 inches (175 mm).
4. Diameter: As indicated.
smallkane
ROOF ACCESSORIES 077200 - 8
5. Finish: Manufacturer's standard.
2.8 GENERAL FINISH REQUIREMENTS
A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for
recommendations for applying and designating finishes.
B. Appearance of Finished Work: Noticeable variations in same piece are not acceptable.
Variations in appearance of adjoining components are acceptable if they are within the range of
approved Samples and are assembled or installed to minimize contrast.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, to verify actual locations,
dimensions, and other conditions affecting performance of the Work.
B. Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and securely anchored.
C. Verify dimensions of roof openings for roof accessories.
D. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. General: Install roof accessories according to manufacturer's written instructions.
1. Install roof accessories level, plumb, true to line and elevation, and without warping, jogs
in alignment, excessive oil canning, buckling, or tool marks.
2. Anchor roof accessories securely in place so they are capable of resisting indicated loads.
3. Use fasteners, separators, sealants, and other miscellaneous items as required to complete
installation of roof accessories and fit them to substrates.
4. Install roof accessories to resist exposure to weather without failing, rattling, leaking, or
loosening of fasteners and seals.
B. Metal Protection: Protect metals against galvanic action by separating dissimilar metals from
contact with each other or with corrosive substrates by painting contact surfaces with
bituminous coating or by other permanent separation as recommended by manufacturer.
1. Coat concealed side of uncoated aluminum or stainless-steel roof accessories with
bituminous coating where in contact with wood, ferrous metal, or cementitious
construction.
2. Underlayment: Where installing roof accessories directly on cementiti ous or wood
substrates, install a course of felt underlayment and cover with a slip sheet, or install a
course of polyethylene sheet.
smallkane
ROOF ACCESSORIES 077200 - 9
3. Bed flanges in thick coat of asphalt roofing cement where required by manufacturers of
roof accessories for waterproof performance.
C. Roof Curb Installation: Install each roof curb so top surface is level.
D. Equipment Support Installation: Install equipment supports so top surfaces are level with each
other.
E. Roof-Hatch Installation:
1. Install roof hatch so top surface of hatch curb is level.
2. Verify that roof hatch operates properly. Clean, lubricate, and adjust operating
mechanism and hardware.
3. Attach safety railing system to roof-hatch curb.
4. Attach ladder-assist post according to manufacturer's written instructions.
F. Heat and Smoke Vent Installation:
1. Install heat and smoke vent so top perimeter surfaces are level.
2. Install and test heat and smoke vents and their components for proper operation
according to NFPA 204.
G. Gravity Ventilator Installation: Verify that gravity ventilators operate properly and have
unrestricted airflow. Clean, lubricate, and adjust operating mechanisms.
H. Pipe Support Installation: Install pipe supports so top surfaces are in contact with and provide
equally distributed support along length of supported item.
I. Security Grilles: Weld bar intersections and, using tamper-resistant bolts, attach the ends of
bars to structural frame or primary curb walls.
J. Roof Walkway Installation:
1. Verify that locations of access and servicing points for roof -mounted equipment are
served by locations of roof walkways.
2. Remove ballast from top surface of low-slope roofing at locations of contact with roof-
walkway supports.
3. Install roof walkway support pads prior to placement of roof walkway support stands
onto low-slope roofing.
4. Redistribute removed ballast after installation of support pads.
K. Preformed Flashing-Sleeve Installation: Secure flashing sleeve to roof membrane according to
flashing-sleeve manufacturer's written instructions.
L. Seal joints with elastomeric or butyl sealant as required by roof accessory manufacturer.
smallkane
ROOF ACCESSORIES 077200 - 10
3.3 REPAIR AND CLEANING
A. Galvanized Surfaces: Clean field welds, bolted connections, and abraded areas and repair
galvanizing according to ASTM A 780.
B. Touch up factory-primed surfaces with compatible primer ready for field painting according to
Division 09 painting Sections.
C. Clean exposed surfaces according to manufacturer's written instructions.
D. Clean off excess sealants.
E. Replace roof accessories that have been damaged or that cannot be successfully repaired by
finish touchup or similar minor repair procedures.
END OF SECTION 077200