07410 preformed roofing 0610 Attch 2.pdf

FA4417-10-R-0012 Amendment 2, Attachment 2 MS0610

07410-1

SECTION 07410 PREFORMED ROOFING, WALL SIDING AND ACCESSORIES

PART 1 GENERAL

1.01 RELATED SPECIFICATION SECTIONS:

A. Section 01000 – GENERAL REQUIREMENTS

B. Section 07213 - BATT & BLANKET INSULATION

C. SECTION 09111 – METAL STUD FRAMING SYSTEM

1.02 SECTION INCLUDES

A. Preformed, prefinished "Galvalume" roofing and aluminum roofing, wall siding and associated integral flashings, trim and underlayment. The completed roof installation shall meet UL 90 Uplift as a minimum.

B. Prefinished "Galvalume" and aluminum counterflashings.

C. Prefinished "Galvalume" and aluminum gutters and downspouts.

D. Preformed, prefinished "Galvalume" and aluminum Fascia Panels.

E. Light-gauge galvanized steel, sloped retrofit roof structure over existing roof structure.

1.03 PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

A. See applicable section of the Specifications and the Drawings.

1.04 PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

A. See applicable sections of the Specifications and the Drawings.

1.05 REFERENCES

A. AISC - Specification for the Design, Fabrication and Erection of Structural Steel for Buildings.

B. ASTM A36 - Structural Steel.

C. ASTM A153 - Zinc Coating (Hot Dip) on Iron and Steel Hardware.

D. ASTM A307 - Carbon Steel Externally Threaded Standard Fasteners.

E. ASTM A325 - High Strength Bolts for Structural Steel Joints.

F. ASTM A386 - Zinc-coating (Hot-Dip) on Assembled Steel Products.

G. ASTM A446 - Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, Structural (Physical) Quality.

H. ASTM A490 - Quenched and Tempered Alloy Steel Bolts for Structural Steel Joints.

I. ASTM A500 - Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and

Shapes.

J. ASTM A501 - Hot Formed Welded and Seamless Carbon Steel Structural Tubing.

K. ASTM A525 - Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, General Requirements.

L. ASTM A529 - Structural Steel with 42,000 psi (290 MPa) Minimum Yield Point.

M. ASTM A572 - High Strength Low Alloy Columbium-Vanadium Steel of Structural Quality.

N. ASTM A792 - Steel Sheet, Aluminum-Zinc Coated "Galvalume".

O. AWS A2.0 - Standard Welding Symbols.

07410-2

P. AWS D1.1 - Structural Welding Code.

Q. FS HH-I-558 - Insulation, Blocks, Boards, Blankets, Felts, Sleeving (Pipe and Tube Covering), and Pipe Fitting Covering, Thermal (Mineral Fiber, Industrial Type).

R. SSPC - Steel Structures Painting Council.

S. ASTM E1592-94 – Standard Test Method for Structural Performance of Sheet Metal Roof and Siding

Systems by Uniform Static Air Pressure.

T. ASCE 7-98 – Minimum Design Loads for Buildings and Other Structures.

U. AISC-MB Certification

1.06 SYSTEM DESCRIPTION

A. Soffit System: Preformed and factory prefinished galvanized steel or aluminum sheet, perforated soffit panels of manufacturers standard profile, with required framing/anchorage assembly, insulation, and accessory components. (Manufacturer’s standard perforated metal siding is not acceptable.)

B. Wall Siding System: Preformed and factory prefinished "Galvalume" steel sheet panels or aluminum panels of manufacturers standard profile, with required framing/anchorage assembly, insulation, and accessory components.

C. Roof and Fascia System: Preformed and factory prefinished "Galvalume" steel sheet or aluminum sheet, standing seam roof/fascia panels, metal gutters with exposed downspouts as shown on the drawings, low profile screened venting ridge or low profile non-venting ridge, insulation and thermal blocking between roof sheets and structural elements, and accessory components. Roof and fascia panels that are field formed at the construction site are not acceptable unless the manufacturer of the rolling machine provides a warranty meeting the requirements of 1.13.B below.

D. Roof Slope: 3 inches in 12 inches, unless shown otherwise. (See 1.11.A.d.)

E. Thermal Insulation, see Section 07213.

1.07 DESIGN REQUIREMENTS

A. Roof system, wall system, etc., shall be designed to withstand dead loads and design loads due to pressure and suction (uplift) of wind, 140 mph, in accordance with ASCE 7-98, and the above references.

B. Exterior roof system and wall system shall withstand imposed loads with maximum allowable deflection of span: 1/180.

C. Provide drainage to exterior for water entering or condensation occurring within roof system.

D. Assembly to permit movement of components without buckling, failure of joint seals, undue stress on fasteners or other detrimental effects, when subject to temperature range of 100 degrees F.

E. Size and fabricate roof system and wall system free of distortion or defects detrimental to appearance or performance.

1.08 SUBMITTALS

A. Submit under provisions of Section 01300.

B. Roofing and Siding:

a. Shop Drawings: Indicate material profile, jointing pattern, jointing details, fastening methods, all flashing conditions, terminations, installation details, component dimensions, trim shapes, and manufacturer's written installation instructions. The roofing manufacturer must prepare the shop drawings.

b. Product Data: Provide manufacturer's data on metal types, finishes, characteristics, roof and siding panel certification and other information as may be requested by the Contracting Officer.

c. Submit one sample 12” x 12” size illustrating metal finishes color.

d. Manufacturer's Installation Instructions: Indicate preparation requirements, assembly sequence, etc.

1.09 QUALITY ASSURANCE

07410-3

A. Provide preformed roof, fascia and siding panel systems, which have been pretested and certified by the manufacturer to provide resistance to air and water infiltration and structural deflection and failure in accordance with paragraph 1.07 Design Requirements.

B. Prior to issuance of the warranties, the roofing manufacturer’s representative shall inspect the installation and provide the Contracting Officer a written report as to the quality of the installation. All work identified as being not acceptable to the manufacturer’s representative, shall be corrected. Upon completion of the corrected work and acceptance by the manufacturer’s representative, the representative shall provide the Contracting Officer a written report indicating that all defective work has been corrected and that the warranties will be issued. The written report shall be attached to the roof system warranty.

1.10 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing the products specified in this Section with minimum three years documented experience.

B. Installer: Subcontractor specializing in erection of pre-engineered metal building systems with a minimum of three years documented experience and approved by the metal building manufacturer.

C. Design Work under direct supervision of a Professional Structural Engineer experienced in design of this work. Structural design drawings and documents shall be signed, sealed and dated by a Professional Structural Engineer currently licensed in the State of Florida.

1.11 STORAGE BUILDINGS IN THE MUNITIONS STORAGE AREA:

A. Storage buildings in the Munitions Storage Area to receive new roofing and siding shall comply with this specification with the following exceptions:

a. Roof, wall and fascia colors shall be selected from the manufacturer's standard range of colors. The color shall be "Light Tan".

b. Overhangs are not required.

c. Provide manufacturer's standard gutters, rake trim, downspouts, etc. Provide pre-cast concrete splash blocks at each downspout.

d. Roof Slope: Existing.

1.12 WARRANTIES

A. General Warranty Modified Silicone Finish (Siding): Submit three copies of manufacturer's written warranty providing 5 year guarantee that pre-finished color coated surfaces of wall siding will not chip, crack, craze, blister, peel, chalk, or fade (color change) for the same time period. Warranty shall commence on the date of acceptance by the Contracting Officer.

B. General Warranty Kynar Finish (Roof, Fascia and Wall Siding): Submit three copies of manufacturer's written warranty providing twenty (20) year guarantee that exterior pre-finished color coated surfaces of wall siding, fascia, or roof panels will not chip, crack, craze, blister, or peel, and without chalking in excess of 8 (ASTM D659) and without fading (color change) in excess of 5 NBS units for the same time period.

Include coverage for weather-tightness of building enclosure after installation. Warranty shall commence on the date of acceptance by the Contracting Officer.

1.13 ROOF SYSTEM WARRANTY

A. Submit two copies of the manufacturer’s written warranty providing twenty (20) year guarantee that the entire roofing system including but not limited to sub-framing, roof panels, fascia panels, flashings, gutters and downspouts, curb, etc. will not leak for the same time period. Warranty shall commence on the date of acceptance by the Contracting Officer.

B. Roof and fascia panels that are rolled and formed at the construction site must be warranted for a period of twenty years as per the above paragraph. The manufacturer of the rolling machine must provide the Roof System Warranty. In lieu of the warranty provided by the rolling machine manufacturer, the warranty may be provided by an independent entity that routinely provides warranties of this type. The form of the warranty must be acceptable to the government.

1.14 PRIME CONTRACTOR / INSTALLER WARRANTY

A. Submit two copies of written warranty providing two (2) year guarantee against defects in the installation, workmanship and materials, leaking (see paragraph 1.12 & 1.13) and further guarantee the installation to

07410-4 be in accordance with manufacturer's instructions. Warranty shall commence on the date of acceptance by the Contracting Officer.

PART 2 - PRODUCTS

2.01 MATERIALS: WALL SIDING SYSTEM

A. Sheet Steel Stock: ASTM A792 Galvalume AZ55 coating, factory pre-finished.

B Pre-finished wall panels, corner trim, sill flashing, etc., within one-half mile of Santa Rosa Sound shall be 0.032 aluminum, factory pre-finished. Verify location of building with Base Civil Engineer.

C. Joint Seal Gaskets: Manufacturer’s standard type.

D. Fasteners: Manufacturer's standard type, stainless steel, finishes to match adjacent surfaces when exposed to the exterior/weather. Fasteners not exposed to the exterior/weather shall be manufacturer’s standard type, galvanized to ASTM A386 2.0 oz/sf finish.

E. Bituminous Paint asphaltic type.

F. Sealant: One or two-part high performance urethane type, non-staining, elastomeric, skinning.

2.02 MATERIALS: FASCIA AND ROOF SYSTEM

A. Sheet Steel Stock: ASTM A792 Galvalume AZ55 coating, factory pre-finished.

B. Pre-finished roofing panels, flashings, fascia panels, soffit panels, ridge caps, etc., within one-half mile of Santa Rosa Sound shall be 0.032 aluminum, factory pre-finished. Verify location of building with Base Civil Engineer.

C. Joint Seal Gaskets: Manufacturer’s standard type.

D. Fasteners: Manufacturer's standard type, stainless steel, finishes to match adjacent surfaces when exposed to the exterior/weather. Fasteners not exposed to the exterior/weather may be manufacturer’s standard type, galvanized to ASTM A386 2.0 oz/sf finish.

E. Clips: Clips shall be heavy duty, galvanized to ASTM A386 2.0 oz/sq ft finish, and able to accommodate simultaneous horizontal and vertical movement due to thermal and wind loading.

F. Underlayment: ASTM D226, asphalt saturated felt as indicated on the drawings, or if not indicated on the drawings, a minimum of # 15.

G. Bituminous Paint asphaltic type.

H. Sealant: Manufacturer's standard gun grade, one or two part high performance urethane type, non-staining elastomeric, skinning.

I. Equipment Curbs. Factory pre-formed one piece curbs, welded construction, with integral water deflecting cricket, minimum 3” attachment flanges, minimum 8” high curbs and built-in rib configurations designed to fit the specific panel to which they will mount. . Curbs must be fabricated from galvalume coated steel sheet compatible with the roof panels. They must provide a watertight seal.

2.03 FABRICATION

A. FASCIA, WALL SIDING AND ROOF SYSTEMS

1. Fascia: Same panel as standing seam roofing below. Roof seams and fascia seams shall be in alignment. (Gable end wall panels same as fascia.)

2. Standing Seam Roofing: Structural architectural panel, steel minimum 24 gage metal thickness;

aluminum minimum 0.032, mechanically seamed to adjacent panels and roof clips, manufacturer's standard profile not to exceed 18" center to center of seams, lapped edges fitted with continuous gaskets. Roofing shall be in continuous lengths from eave edge to ridge. (Trapezoidal structural standing seam panels are not acceptable)

3. Soffit Panels: Minimum 26 gage metal thickness, manufacturer's standard soffit panel profile, perforated for ventilation. (Perforated wall siding is not acceptable.)

4. Wall Siding Panels/Girts: Minimum 26 gauge metal thickness, manufacturer's standard profile. Flush girts required at buildings to receive pre-formed metal wall siding and/or liner panels.

07410-5

5. Purlins, Eave Struts and other Miscellaneous Structural Shapes: Rolled formed structural shape to receive siding, standing seam roofing sheet.

6. Internal and external Corners: Same material thickness and finish as adjacent material, profile brake formed with hemmed edges, factory mitered to required angles.

7. Expansion Joints: Same material and finish as adjacent material, manufacturer's standard brake formed type, of profile to suit system.

B. Miscellaneous Flashings, Valley Flashings, Closure Pieces, In-fills, Vents, Stacks, Caps, and Special Trim

Shapes.

1. Same material and finish as adjacent material, profile to suit system or formed as detailed. Gauges of metals shall be as recommended by SMACNA for the specific application, and/or manufacturer’s written recommendations.

C. Fasteners: To maintain load requirements, and weathertight installation, same finish as cladding, non-corrosive type. (See above)

D. Ridge Vent: Same material and finish as adjacent material, manufacturer's standard low profile to suit roof system, complete with insect screen.

E. Ridge Cap: Same material and finish as adjacent material, manufacturer's standard low profile to suit roof system.

F. Gutters & downspouts:

a. Exposed gutters and downspouts on Storage Buildings in Munitions Storage Area. See 1.11. above.

1. Fabricate gutters of same material and finish as roofing metal.

2. Form gutters to profile and size indicated, or as required to safely collect and remove water. Size of gutter based on 3.5" per hour rainfall intensity, 60-minute duration, 10-year frequency.

3. Exposed downspouts shall be constructed from the same materials as roofing metal. Terminate downspouts at pre-cast concrete splash blocks. Number and size of downspouts shall be adequate to dispose of roof runoff without overflowing the gutter.

4. Form sections in maximum possible lengths. Hem exposed edges. Allow for expansion and provide expansion at joints.

5. Fabricate downspout support straps of same material and finish as roofing metal.

b. Exposed gutters and downspouts. (Not required on one-story buildings except as noted on the drawings).

1. Fabricate gutters of same material and finish as roofing metal.

2. Form gutters to profile and size indicated, or as required to safely collect and remove water. Size of gutter based on 3.5" per hour rainfall intensity, 60-minute duration, 10-year frequency.

3. Construct concealed downspouts from 6" minimum diameter PVC. Number of downspouts shall be adequate to dispose of roof runoff without overflowing gutter. Attach flanged PVC fittings, etc.

to the bottom of the gutter and connect to the downspout(s). Route concealed downspouts to exterior enclosure. See drawings for location of concealed downspouts. Terminate downspouts at pre-cast concrete splash blocks.

4. Form sections in maximum possible lengths. Hem exposed edges. Allow for expansion and provide expansion at joints.

5. Line interior of built-in gutters with elastomeric roofing membrane.

2.04 FINISHES

A. Wall Siding Components and Accessories:

1. Provide factory finished full-strength 70% "Kynar 500" coating baked on for 15 minutes at 450 degree F (232 degree C), 30% reflective gloss (ASTM D523), over minimum 0.3 mil baked on epoxy primer at exterior (weather) side. Total dry film thickness of 1.0 minimum.

B. Roof and Fascia Roof Components and Accessories:

1. Factory finished full-strength 70% "Kynar 500" coating baked on for 15 minutes at 450 degree F (232 degree C), 30% reflective gloss (ASTM D523), over minimum 0.3 mil baked on epoxy primer. Total dry film thickness of 1.0 minimum.

2.05 COLORS: (See 1.11 for exception)

07410-6

A. The following colors shall be applied to the various components to be incorporated into the project. Items to be field finished shall conform to colors indicated or to the actual color of the prefinished item(s) supplied by the manufacturer.

1. Roof panels, fascia, gutters, soffits, low profile ridge vents, or low profile ridge cap, flashings, vents, equipment, trim and miscellaneous shapes in the plane of the roof; color "Medium Bronze".

2. Exterior personnel doors and door frames; “Dark Bronze" at Main Entry, match wall siding at other doors.

3. Exterior windows and frames; “Dark Bronze".

4. Louvers and louver frames; "Match Color of Wall".

5. Wall siding/components/accessories shall be selected from the manufacturer's standard colors, and shall match as close as possible, Devoe 2M54E, “Tortoise Shell”. If a custom color is indicated on the drawings, supplier shall provide in his proposal, the cost difference if any, between the "standard" color and the 'custom" color.

B. Interior Surfaces of Wall Siding, Fascia, Roof Components and Accessories: Pre-coated enamel steel, modified silicone finish, color white.

C. Vinyl Vapor Barrier at Exposed Interior Face of Insulation: White. (See Section 07213)

PART 3 EXECUTION

3.01 EXAMINATION

A. Verify site conditions, including but not limited to, all dimensions, field conditions that my affect the installation, etc., prior to commencement of work. Commencement of work will be interpreted that contractor has verified all field conditions and is responsible for all corrective work that may be required. .

3.02 ERECTION, ROOFING, FASCIA, AND WALL SYSTEM

A. Install in accordance with manufacturer's instructions and as indicated on the drawings.

B. Exercise care when cutting prefinished material to minimize damage to the prefinished surface and ensure cuttings does not remain on finish surface.

C. Fasten cladding system to structural supports, aligned level and plumb.

D. Locate end laps over supports. End laps shall be the minimum recommended by the manufacturer but in no event less than 2". Place sidelaps over bearing.

E. Provide expansion joints where required or indicated.

F. Use concealed fasteners at roof panels except as may be required at eave. Use exposed fasteners at siding.

G. Install insulation and vinyl vapor barrier in accordance with manufacturer's instructions utilizing framing members for attachment.

H. Install sealant and gaskets to prevent weather penetration.

I. System: Free of rattles, noise due to thermal movement and wind whistles.

J. Existing plumbing vents exhaust fans and ductwork, flues, stacks, roof mounted exhaust fans/curbs and other items that penetrate or on top of the existing roof must be extended up to and through the new roof.

Provide new curbs, support framing, flashings, electrical, etc. as needed to complete the installation.

Notify Contracting Officer immediately of inoperative equipment.

3.03 ERECTION, GUTTER AND DOWNSPOUT

A. Rigidly support and secure components. Join lengths with formed seams sealed watertight. Flash and seal gutters to downspouts.

B. Apply bituminous paint on surfaces in contact with cementitious materials.

07410-7

C. Slope gutters minimum 1/16 inch/ft.

D. Terminate downspouts at pre-formed concrete splash blocks.

3.04 INSTALLATION, ACCESSORIES

A. Seal wall and roof accessories watertight and weather tight with sealant.

3.05 TOLERANCES

A. Framing Members: 1/4 inch from level; 1/8 inch from plumb.

B. Fascia and Roofing: 1/8 from true position.

3.06 CLEANING

A. The exterior walls, doors, windows, etc., shall be cleaned of dirt, stains and other foreign matter.

Scratches or other defects, considered minor by the Contracting Officer, shall be repaired to the satisfaction of the Contracting Officer. Major defects shall be replaced with new material to match that of the defective item.

B. The interior of the building shall be swept broom clean and left in such a condition as to allow the government ready access to the building and capable of completing their portion of the work.

END OF SECTION