2-KW Library Roof Replacement Specifications 4 May 2026 (Rev).pdf

SPECIFICATIONS

for

KEY WEST PUBLIC LIBRARY

ROOF REPLACEMENT

Prepared for

MONROE COUNTY BOARD OF COUNTY COMMISSIONERS

January 2026

Prepared by:

Bender & Associates Architects, P.A.

Key West, Florida

KW PUBLIC LIBRARY REROOFING

TABLE OF CONTENTS 00001-1

TABLE OF CONTENTS

GENERAL SPECIFICATIONS

DIVISION 1 - GENERAL REQUIREMENTS (BOUND SEPARATELY)

TECHNICAL SPECIFICATIONS

DIVISION 2 - SITE WORK

02070 Selective Demolition

DIVISION 3 - CONCRETE

(Not Used)

DIVISION 4 – MASONRY

(Not Used)

DIVISION 5 – METALS

05500 Metal Fabrications

DIVISION 6 - WOOD AND PLASTICS

06100 Rough Carpentry 06200 Finish Carpentry

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

07411 Metal Roofing 07600 Flashing and Sheet Metal 07920 Sealants and Caulking

DIVISION 8 - DOORS AND WINDOWS

(Not Used)

TABLE OF CONTENTS 00001-2

DIVISION 9 – FINISHES

09900 Painting

DIVISION 10 – SPECIALTIES

(Not Used)

DIVISION 11 - EQUIPMENT

(Not Used)

DIVISION 12 - FURNISHINGS

(Not Used)

DIVISION 13 - SPECIAL CONSTRUCTION

(Not Used)

DIVISION 14 - CONVEYING SYSTEMS

(Not Used)

DIVISION 15 - MECHANICAL

(Not Used)

DIVISION 16 - ELECTRICAL

(Not Used)

END TABLE OF CONTENTS

Selective Demolition 02070-1

SECTION 02070

SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 DESCRIPTION

A. Work included: Carefully demolish and remove from the site those items scheduled to be so demolished and removed.

B. Related work:

1. The Work of this Section must comply with all other Sections of these

Specifications.

2. Division 1, General Conditions.

1.2 QUALITY ASSURANCE

A. The work of this project involves a significant historic site. The Key West Public Library was constructed in 1958. All work activities must be undertaken with sufficient care to protect this historic resource and must be supervised by personnel who are familiar with the Secretary of Interior’s Standards for Rehabilitation.

B. Due to the sensitive historic nature of this project, general contractors and certain trades must meet prequalification requirements.

C. Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

D. Take all appropriate measures necessary to correct inferior work as identified by the architect. Protect historic fabric during all operations. No historic materials shall be removed from the site without prior approval of architect.

The architect reserves the right to have individual workmen removed from individual activities or the project entirely, if in the architect's judgment, the quality of work being performed is inappropriate, inferior, or detrimental to historic materials.

Selective Demolition 02070-2

E. Refer to photographic details in the Specifications and/or on the Drawings for additional historic preservation information and project requirements.

F. All work must comply with the Secretary of the Interiors Standards for

Rehabilitation, as administered by the Florida Department of State, Division of Historic Resources.

G. Remove all areas identified by the architect as inappropriate or not matching the adjacent historic fabric.

H. Historic roofing and finishes may be intact under contemporary finishes.

Consult architect before removal of questionable historic or non-historic material.

1.3 PRODUCT HANDLING/SUBMITTALS

A. Comply with pertinent provisions of Section 01640 of these Specifications.

B. Catalog and maintain records of all demolished material. Identify all material that will be reused on this project, salvaged for reuse by others, recycled, or is to be discarded due to excessive deterioration.

PART 2 - PRODUCTS

(No products are required in this Section)

PART 3 - EXECUTION

3.1 SURFACE CONDITIONS

A. Examine the areas and conditions under which work of this Section will be performed. Correct conditions detrimental to timely and proper completion of the Work. Do not proceed until unsatisfactory conditions are corrected.

3.2 DEMOLITION

A. By careful study of the Contract Documents, determine the location and extent of selective demolition to be performed.

SELECTIVE DEMOLITION 02070-3

B. In company with the Architect, visit the site and verify the extent and location of selective demolition required.

1. Carefully identify limits of selective demolition.

2. Mark interface surfaces as required to enable workmen also to identify items to be removed and items to be left in place intact.

C. Prepare and follow an organized plan for demolition and removal of items.

1. Shut off, cap, and otherwise protect existing public utility lines in accordance with the requirements of the public agency or utility having jurisdiction.

2. Completely remove items scheduled to be so demolished and removed, leaving surfaces clean, solid, and ready to receive new materials specified elsewhere.

3. In all activities, comply with pertinent regulations of governmental agencies having jurisdiction.

D. Except for Owner requested material and artifacts or materials demolished for reuse on this project, demolished material shall be considered to be recycled, or salvaged for reuse by others.

E. Use means necessary to prevent dust becoming a nuisance to the public, to neighbors, and to other work being performed on or near the site.

F. Use protective measures as necessary to protect all materials to remain.

3.3 REPLACEMENTS

A. In the event of demolition of items not so scheduled to be demolished, promptly replace such items to the approval of the Architect and at no additional cost to the Owner.

END OF SECTION

METAL FABRICATIONS 05500 - 1

SECTION 05500

METAL FABRICATIONS

PART 1 - GENERAL

1.1 DESCRIPTION

A. Work included: Provide miscellaneous metal work shown on the Drawings, as specified herein, and as needed for a complete and proper installation.

B. Related work:

Documents affecting work of this Section include, but are not necessarily limited to, General Conditions, Supplementary Conditions, and Sections in Division 1 of these Specifications.

1.2 QUALITY ASSURANCE

A. The work of this project involves a significant historic site. The Key West Public Library was constructed in 1958. All work activities must be undertaken with sufficient care to protect this historic resource and must be supervised by personnel who are familiar with the Secretary of Interior’s Standards for Rehabilitation.

B. Due to the sensitive historic nature of this project, general contractors and certain trades must meet prequalification requirements.

C. Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

D. Take all appropriate measures necessary to correct inferior work as identified by the architect. Protect historic fabric during all operations. No historic materials shall be removed from the site without prior approval of architect. The architect

METAL FABRICATIONS 05500 - 2

reserves the right to have individual workmen removed from individual activities or the project entirely, if in the architect's judgment, the quality of work being performed is inappropriate, inferior, or detrimental to historic materials.

F. All work must comply with the Secretary of the Interiors Standards for

G. Match original historic material, textures and finishes.

H. The architect will be the sole judge as to what constitutes an appropriate match.

I. Remove all areas identified by the architect as inappropriate or not matching the

J. Historic finishes and roofing may be intact under contemporary finishes. Consult architect before removal of questionable historic or non-historic material.

K. Perform shop and/or field welding required in connection with the work of this

Section in strict accordance with pertinent recommendations of the American Welding Society.

1.3 SUBMITTALS

A. Comply with pertinent provisions of Conditions of Contract and Division 1

Specification Sections.

B. Product data: Within 35 calendar days after the Contractor has received the Owner’s Notice to Proceed, submit:

1. Materials list of items proposed to be provided under this Section;

2. Manufacturer’s specifications and other data needed to prove compliance with the specified requirements;

3. Shop Drawings in sufficient detail to show fabrication, installation, anchorage, and interface of the work of this Section with the work of adjacent trades;

4. Manufacturer’s recommended installation procedures which, when

METAL FABRICATIONS 05500 - 3

approved by the Architect, will become the basis for accepting or rejecting actual installation procedures used on the Work.

1.4 PRODUCT HANDLING

A. Comply with pertinent provisions of Section 01640.

2.1 MATERIALS

A. In fabricating items which will be exposed to view, limit materials to those which are free from surface blemishes, pitting, rolled trade names, and roughness.

B. Comply with following standards, as pertinent.

1. Steel plates, shapes, and bars; ASTM A36;

2. Steel plates to be bent or cold-formed; ASTM A283, grade C;

3. Steel tubing (hot formed, welded, or seamless): ASTM A501;

4. Steel bars and bar-size shapes: ASTM A306, grade 65, or ASTM A36;

5. Cold-finished steel bars: ASTM A108;

6. Cold-rolled carbon steel sheets: ASTM 336;

7. Galvanized carbon steel sheets: ASTM A526, with G90 zinc coating in accordance with ASTM A525;

8. Stainless steel sheets; AISI type 302 or 304, 24 gage, with number 4 finish;

9. Gray iron castings: ASTM A48, class 10;

10. Malleable iron castings: ASTM A47;

11. Steel pipe: ASTM A53, grade A, schedule 40, black finish unless otherwise noted;

12. Concrete insets:

a. Threaded or wedge type galvanized ferrous castings of malleable iron complying with ASTM A27;

b. Provide required bolts, shims, and washers, hot-dip galvanized in accordance with ASTM A153.

2.2 FASTENERS

METAL FABRICATIONS 05500 - 4

A. General:

1. For exterior use and where built into exterior walls, provide hot dip galvanized zinc-coated fasteners, unless noted otherwise.

2. Provide fasteners of type, grade, and class required for the particular use.

B. Comply with following standards as pertinent.

1. Bolts and nuts; Provide hexagon-head regular type complying with ASTM A307, grade A;

2. Lag bolts: Provide hex or square-head type complying with Fed Spec FF-B- 561;

3. Machine screws: Provide cadmium plated steel type complying with Fed Spec FF-S-111;

4. Washers:

a. Plain washers: Comply with Fed Spec FF-W-92, round, carbon steel;

b. Lock washers: Comply with Fed Spec FF-W-84, helical spring type carbon steel;

5. Toggle bolts: Provide type, class, and style needed but complying with Fed

Spec FF-B-588;

6. Anchorage devices: Provide expansion shield complying with Fed Spec FF-S-

325.

2.3 OTHER MATERIALS

A. Provide other materials, not specifically described but required for a complete and proper installation, as selected by the Contractor subject to the approval of the Architect.

2.4 SHOP PAINT

A. Primer: Use “10-99 Tnemec Primer” or “Rustoleum Number 5769 Primer.”

B. For repair of galvanizing, use a high zinc-dust content paint complying with MIL- P-21035.

2.5 FABRICATION

A. Except as otherwise shown on the Drawings or the approved Shop Drawings, use materials of size, thickness, and type required to produce reasonable strength and durability in the work of this Section.

METAL FABRICATIONS 05500 - 5

B. Fabricate with accurate angles and surfaces which are true to the required lines and levels, grinding exposed welds smooth and flush, forming exposed connections with hairline joints, and using concealed fasteners wherever possible.

C. Prior to shop painting or priming, properly clean metal surfaces as required for the applied finish and for the proposed use of the item.

D. On surfaces inaccessible after assembly or erection, apply two coats of the specified primer. Change color of second coat to distinguish it from the first.

A. Examine the areas and conditions under which work of this Section will be performed. Correct conditions detrimental to timely and proper completion of the Work. Do not proceed until unsatisfactory conditions are corrected.

3.2 COORDINATION

A. Coordinate as required with other trades to assure proper and adequate provision in the work of those trades for interface with the work of this Section.

3.3 INSTALLATION

1. Set work accurately into position, plumb level, true, and free from rack.

2. Anchor firmly into position.

3. Where field welding is required, comply with AWS recommended procedures of manual-shielded metal-arc welding for appearance and quality of weld and for methods to be used in correcting welding work.

4. Grind exposed welds smooth, and touch up shop prime coats.

5. Do not cut, weld, or abrade surfaces which have been hot-dip galvanized after fabrication and which are intended for bolted or screwed field connections.

METAL FABRICATIONS 05500 - 6

B. Immediately after erection, clean the field welds, bolted connections, and abraded areas of shop priming. Paint the exposed areas with same material used for shop priming.

Rough Carpentry 06100-1

SECTION 06100

ROUGH CARPENTRY

A. Work included: Provide wood, nails, bolts, screws, framing anchors and other rough hardware, and other items needed, and perform rough carpentry for the construction shown on the Drawings, as specified herein, and as needed for a complete and proper installation.

1. Documents affecting work of this Section include, but are not necessarily limited to, General Conditions, Supplementary Conditions, and Sections in Division 1 of these Specifications.

sufficient care to protect this historic resource and must be supervised by the architect. Protect historic fabric during all operations. No historic materials shall be removed from the site without prior approval of architect.

The architect reserves the right to have individual workmen removed from individual activities or the project entirely, if in the architect's judgment, the

Rough Carpentry 06100-2

G. Codes and standards:

1. In addition to complying with the pertinent codes and regulations of governmental agencies having jurisdiction, unless otherwise specifically directed or permitted by the Architect comply with:

a. The most current applicable specifications of the American

Institute of Timber Construction;

b. PS 20 “American Softwood Lumber Standard” and with the applicable rule of inspection agencies certified by American Lumber Standard. Factory mark each piece of lumber with grade stamp of inspection agency evidencing compliance with grading rule requirements.

c. All “Parallam PSL” lumber shall conform to the most current specification of the American Plywood Association with at least the following minimum design stresses:

1) Fb (Bending) 2,900 PSI

2) Fv (Shear) 290 PSI

3) E 2,000,000 PSI

4) Fc (Compression) Parallel to grain 2,900 PSI Perpendicular to grain 750 PSI

5) Ft (Tension) 2,400 PSI

d. All plywood shall comply with the most current applicable specification and supplements of the American Plywood Association (APA).

e. "Product Use Manual" of the Western Wood Products Association for selection and use of products included in that manual;

f. "Plywood Specification and Grade Guide" of the American Plywood Association;

g. "Standard Specifications for Grades of California Redwood Lumber" of the Redwood Inspection Bureau for Redwood, when used.

Rough Carpentry 06100-3

B. Protection:

1. Deliver the materials to the job site and store, in a safe area, out of the way of traffic, and shored up off the ground surface.

2. Identify framing lumber as to grades, and store each grade separately from other grades.

3. Protect metals with adequate waterproof outer wrapping.

4. Use extreme care in off loading of lumber to prevent damage, splitting, and breaking of materials.

1.5 SUBMITTALS

A. Provide documentation that all pressure treated lumber used inside the weather barrier is arsenic free.

2.1 GRADE STAMPS

A. Comply with PS 20 “American Softwood Lumber Standard” and with the applicable rule of inspection agencies certified by American Lumber Standard.

Factory mark each piece of lumber with grade stamp of inspection agency evidencing compliance with grading rule requirements.

B. Identify framing lumber by the grade stamp of the West Coast Lumber

Inspection Bureau, or such other grade stamp as is approved in advance by the Architect.

C. Identify plywood as to species, grade, and glue type by the stamp of the

American Plywood Association.

D. Identify other materials of this Section by the appropriate stamp of the agency approved in advance by the Architect.

2.2 MATERIALS

A. Provide materials in the quantities needed for the Work shown on the drawings, and meeting or exceeding the following standards of quality

1. Horizontal framing members: Douglas Fir-Hemlock, Table 1, No. 1

ROUGH CARPENTRY 06100-4

dense, pressure treated. When concealed or painted, use antique heart pine for exposed members to receive a clear or natural finish.

2. Vertical framing members: Southern Yellow Pine, Table 1, Standard grade. When concealed or painted, use antique heart pine for exposed members to receive a clear or natural finish.

3. Plywood for shear walls: Structural II, GC, Exterior; or standard sheathing with exterior glue.

a. Sheathing: Board sheathing to match existing.

b. Siding: Antique heart pine or Southern Yellow Pine, milled to match existing sizes, pressure treated, for lap siding and antique heart pine or Southern Yellow Pine, pressure treated, milled to match existing sizes and details for board and batten siding.

4. Building paper: Kraft paper complying with Fed Spec UU-B-790a.

5. Wood preservative: Outside of the weatherproof membrane and as allowed by local and Federal regulation, ammoniacal copper arsenite, or 5% solution of pentachlorophenol may be used. ACQ arsenic free treatment at exposed members or interior spaces will be required.

6. Rough hardware:

a. Steel items:

(1) Comply with ASTM A7 or ASTM A36.

(2) Use galvanized at all locations.

b. Machine bolts: Comply with ASTM A307.

c. Lag bolts: Comply with Fed Spec FF-B-561.

d. Nails:

(1) Use common except as otherwise noted.

(2) Comply with Fed Spec FF-N-1.

(3) Use galvanized at all locations.

e. Joist hangers: Simpson, Teco, or equal as approved by the Architect, galvanized.

7. Exterior gypsum sheathing: Butt edge, 1/2" thick, complying with ASTM C630.

ROUGH CARPENTRY 06100-5

3.2 DELIVERIES

A. Stockpile materials sufficiently in advance of need to assure their availability in a timely manner for this Work.

B. Make as many trips to the job site as are needed to deliver materials of this

Section in a timely manner to ensure orderly progress of the Work.

3.3 COMPLIANCE

A. Do not permit materials not complying with the provisions of this Section to be brought onto or to be stored at the job site.

B. Promptly remove non-complying materials from the job site and replace with materials meeting the requirements of this Section.

3.4 WORKMANSHIP

A. Produce joints which are tight, true, and well nailed, with members assembled in accordance with the Drawings and with pertinent codes and regulations.

B. Selection of lumber pieces:

1. Carefully select the members.

2. Select individual pieces so that knots and obvious defects will not interfere with placing bolts or proper nailing, and will allow making of proper connections.

3. Cut out and discard defects which render a piece unable to serve its intended function.

4. Lumber may be rejected by the Architect, whether or not it has been installed, for excessive warp, twist, bow, crook, mildew, fungus, or mold, as well as for improper cutting and fitting.

C. Do not shim any framing component.

ROUGH CARPENTRY 06100-6

3.5 GENERAL FRAMING

A. General

1. In addition to framing operations normal to the fabrication and erection indicated on the drawings, install wood blocking and backing required for the work of other trades.

2. Set horizontal and sloped members with crown up.

3. Do not notch, cut, or bore members for pipes, ducts, or conduits, or for other reasons except as shown on the Drawings or as specifically approved in advance by the Architect.

4. Where new members replace existing, and will be exposed to view, mill and dress to match existing members as to size and texture.

B. Bearings:

1. Make bearings full unless otherwise indicated on the Drawings.

2. Finish bearing surfaces on which structural members are to rest so as to give sure and even support.

3. Where framing members slope, cut or notch the ends as required to give uniform bearing surface.

3.6 BLOCKING AND BRIDGING

A. Install blocking as required to support items of finish and to cut off concealed draft openings, both vertical and horizontal, between ceiling and floor areas.

B. Bridging:

1. Install wood cross bridging (not less than 2" x 3" nominal), metal cross bridging of equal strength, or solid blocking between joists where the span exceeds 8' -0.

2. Provide maximum distance of 8"-0" between a line of bridging and a bearing.

3. Cross bridging may be omitted for roof and ceiling joists where the omission is permitted by code, except where otherwise indicated on the Drawings.

4. Install solid blocking between joists at points of support and wherever sheathing is discontinuous. Blocking may be omitted where joists are supported on metal hangers.

3.7 ALIGNMENT

A. On framing members to receive a finished surface, align the finish subsurface to

ROUGH CARPENTRY 06100-7

vary not more than 1/8" from the plane of surfaces of adjacent furring and framing members.

3.8 INSTALLATION OF PLYWOOD SHEATHING

A. Placement:

1. Place plywood with face grain perpendicular to supports and continuously over at least two supports, except where otherwise shown on the Drawings.

2. Center joints accurately over supports, unless otherwise shown on the Drawings.

B. Protect plywood from moisture by use of waterproof coverings until the plywood in turn has been covered with the next succeeding component or finish.

3.9 FASTENINGS

A. Nailing:

1. Use only common wire nails or spikes of the dimension shown on the

Nailing Schedule, except where otherwise specifically noted on the Drawings.

2. For conditions not covered in the Nailing Schedule provide penetration into the piece receiving the point of not less than 1/2 the length of the nail or spike, provided, however, that 16d nails may be used to connect two pieces of 2" (nominal) thickness.

3. Nail without splitting wood.

4. Pre-bore as required.

5. Remove split members and replace with members complying with the specified requirements.

B. Bolting:

1. Drill holes 1/16" larger in diameter than the bolts being used.

2. Drill straight and true from one side only.

3. Do not bear bolt threads on wood, but use washers under head and nut where both bear on wood, and use washers under all nuts.

C. Screws:

1. For lag screws and wood screws, pre-bore holes same diameter as root of threads, enlarging holes to shank diameter for length of shank.

Finish Carpentry 06200-1

SECTION 06200

FINISH CARPENTRY

A. Work included: Install wood, nails, screws, and other items as needed, and perform finish carpentry for the construction shown on the Drawings, as specified herein, and as need for a complete and proper installation.

sufficient care to protect this historic resource and must be supervised by materials shall be removed from the site without prior approval of architect.

The architect reserves the right to have individual workmen removed from individual activities or the project entirely, if in the architect's judgment, the

Finish Carpentry 06200-2

G. Match original historic material, textures and finishes.

H. The architect will be the sole judge as to what constitutes an appropriate match.

I. Remove all areas identified by the architect as inappropriate or not matching the

J. Historic finishes and roofing may be intact under contemporary finishes.

Consult architect before removal of questionable historic or non-historic material.

1.5 SUBMITTALS

A. Heart pine lumber may be obtained from:

Goodwin Heart Pine, 106 SW 109th Pl., Micanopy, FL 32667-3441, Tel. 352-466-0339.

2.1 GRADE STAMPS

A. Identify lumber by the grade stamp of the West Coast Lumber Inspection Bureau, or such other grade stamp as is approved in advance by the Architect.

B. Identify plywood as to species, grade, and glue type by the stamp of the

American Plywood Association.

2.2 MATERIALS

A. Air dry all finish lumber to maximum 19% moisture content. Do not install "wet" lumber for finish carpentry applications. Provide materials in the quantities needed for the Work as shown on the Drawings, and meeting or

Finish Carpentry 06200-3 exceeding the following standards of quality:

1. All finish lumber which will be left exposed to view and is to be

“unfinished” or is called for (including ceilings, walls, wainscots, trim, flooring, casings, etc.) shall be antique heart pine, premium grade, milled to match existing components exactly.

2. All finish lumber which will be left exposed to view but to be painted (including porch posts, siding, casings, flooring, fascias, railings, stair treads and stringers, etc.) shall be full-dimension, pressure treated Southern Yellow Pine, # 1 grade for exterior and non-pressure treated for interior trim.

3. Other materials as specifically identified in the Drawings.

3.2 WORKMANSHIP

A. Produce joints which are true, tight, and well nailed with all members assembled in accordance with the Drawings.

B. Jointing:

1. Make joints to conceal shrinkage; miter exterior joints; cope interior joints; miter or scarf end-to-end joints.

2. Install trim in pieces as long as possible, jointing only where solid support is obtained.

C. Fastening:

1. Install items straight, true, level, plumb, and firmly anchored in place.

2. Where blocking or backing is required, coordinate as necessary with other trades to ensure placement of required backing and blocking in a timely manner.

Finish Carpentry 06200-4

3. Nail trim with finish nails of proper dimension to hold the member firmly in place without splitting the wood.

4. Nail exterior trim with galvanized nails, making joints to exclude water and setting in waterproof glue or the sealant described in Section 07920 of these Specifications.

5. On exposed work, set nails for putty.

6. Screw, do not drive, wood screws; except that screws may be started by driving and then screwed home.

7. Use other fasteners as specifically identified in the Drawings.

3.3 INSTALLATION OF OTHER ITEMS

A. Install items in strict accordance with the Drawings and the recommended methods of the manufacturer as approved by the Architect, anchoring firmly into position at the prescribed locations, straight, plumb, and level.

3.4 FINISHING

A. Sandpaper finished wood surfaces thoroughly as required to produce a uniformly smooth surface, always sanding in the direction of the grain; except do not sand wood which is designed to be left rough.

B. No coarse grained sandpaper mark, hammer mark, or other imperfection will be accepted.

3.5 CLEANING UP

A. Keep the premises in a neat, safe, and orderly condition at all times during execution of this portion of the Work, free from accumulation of sawdust, cut-ends, and debris.

B. Sweeping:

1. At the end of each working day, and more often if necessary, thoroughly sweep surfaces where refuse from this portion of the Work has settled.

2. Remove the refuse to the area of the job site set aside for its storage.

3. Upon completion of this portion of the Work, thoroughly broom clean all surfaces.

METAL ROOFING 07411-1

SECTION 07411

METAL ROOFING

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Roll-formed metal roof panels and related flashing/trim, sealant, and other accessories to provide complete roofing system.

1.2 RELATED REQUIREMENTS

A. Division 5 Section “Metal Fabrications” for sheet metal.

B. Division 6 Section “Wood Decking for wood frame structure supporting the metal roof.

C. Division 7 Section “Sheet Metal Flashing and Trim” for flashing items not covered in this section.

1.3 REFERENCES

A. 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 design only.

B. American Society of Civil Engineers (ASCE)

1. ASCE 7 Minimum Design Loads for Buildings and Other Structures

C. ASTM International (ASTM)

1. ASTM A792/A792M Standard Specification for Steel Sheet, 55% Aluminum-

Zinc Alloy-Coated by the Hot-Dip Process

2. ASTM A924/A924M Standard Specification for General Requirements for Steel

Sheet, Metallic-Coated by the Hot-Dip Process

3. ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus

4. ASTM B209 Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

5. ASTM C920 Standard Specification for Elastomeric Joint Sealants

6. ASTM D1308 Effect of Household Chemicals on Clear and Pigmented Organic

Finishes

7. ASTM D1970/D1970M Standard Specification for Self-Adhering Polymer

Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for

Ice Dam Protection

8. ASTM D2244 Standard Practice for Calculation of Color Tolerances and Color

Differences from Instrumentally Measured Color Coordinates

9. ASTM D2247 Testing Water Resistance of Coatings in 100% Relative

Humidity

10. ASTM D2794 Resistance of Organic Coatings to the Effects of Rapid

Deformation (Impact)

11. ASTM D3359 Standard Test Methods for Rating Adhesion by Tape Test

12. ASTM D3363 Film Hardness by Pencil Test

13. ASTM D4214 Standard Test Method for Evaluating the Degree of Chalking of

Exterior Paint Films

14. ASTM D4587 Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings

15. ASTM D522/D522M Mandrel Bend Test of Attached Organic Coatings

16. ASTM D523 Standard Test Method for Specular Gloss

17. ASTM D610 Evaluating Degree of Rusting on Painted Steel Surfaces

18. ASTM D822 Filtered Open-Flame Carbon-Arc Exposures of Paint and Related

Coatings

19. ASTM D968 Abrasion Resistance of Organic Coatings by Falling Abrasive

METAL ROOFING 07411-2

20. ASTM E1592 Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference

21. ASTM E84 Standard Test Method for Surface Burning Characteristics of

Building Materials

22. ASTM G152 Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials

23. ASTM G153 Operating Enclosed Carbon Arc Light Apparatus for Exposure of

Nonmetallic Materials

B. Metal Building Manufacturers Association (MBMA):

1. MBMA RSDM Metal Roofing Systems Design Manual

C. National Roofing Contractors Association (NRCA)

1. NRCA 0420 Architectural Metal Flashing, Condensation Control and Reroofing

2. The NRCA Roofing Manual

D. Sheet Metal and Air Conditioning Contractor’s National Association (SMACNA)

1. SMACNA Architectural Sheet Metal Manual

E. Underwriter’s Laboratory (UL)

1. UL 580 Tests for Uplift Resistance of Roof Assemblies

1.4 PREINSTALLATION MEETINGS

A. After approval of submittals and before performing roofing system installation work, hold a pre-roofing conference to review the following:

1. Drawings, specifications, and submittals related to the roof work.

2. Submit, as a minimum; sample profiles of roofing panels, with factory-applied color finish samples, flashing and accessories, typical fasteners and pressure sensitive tape, sample gaskets and sealant/insulating compounds. Also include manufacturer's installation manual.

3. Roof system installation;

4. Procedure for the roof manufacturer's technical representative's onsite inspection and acceptance of the roofing substrate, the name of the manufacturer's technical representatives, the frequency of the onsite visits, distribution of copies of the inspection reports from the manufacturer's technical representative;

5. Contractor's plan for coordination of the work of the various trades involved in providing the roofing system and other components secured to the roofing; and

6. Quality control plan for the roof system installation;

7. Safety requirements.

1.5 SUBMITTALS

A. Shop Drawings

1. Roofing Panels

2. Flashing and Accessories

3. Gutter/Downspout Assembly

B. Product Data: Submit manufacturer's catalog data for the following items:

1. Roof Panels

2. Factory-Applied Color Finish

3. Accessories

4. Fasteners

5. Underlayment

6. Gaskets and Sealing/Insulating Compounds

C. Samples

1. Roof Panels

2. Factory-applied Color Finish, Samples

D. Manufacturer's Instructions

1. Installation Manual

E. Closeout Submittals

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1. Warranties

1.6 QUALITY ASSURANCE

A. Qualification of Manufacturer: Submit documentation verifying metal roof panel manufacturer has been in the business of manufacturing metal roof panels for a period of not less than 25 years.

B. Manufacturer’s Quality Assurance Program: Submit documentation verifying metal roof panel manufacturer manages an internal quality assurance program designed to produce and deliver product in full and on time, in 95% of deliveries over a 12-month average.

C. Manufacturer's Technical Representative: The manufacturer's technical representative must be thoroughly familiar with the products to be installed, installation requirements and practices, and with any special considerations in the geographical area of the project. The representative must perform field inspections and attend meetings as specified herein.

D. Manufacturer’s Commitment to Safety: The manufacturer shall have an OSHA Total

Recordable Injury Rate of 2.95 or less over a rolling 13-month average.

E. Single Source: Roofing panels, fasteners, clips, closures, and other accessories must be standard products supplied by the manufacturer, and the most recent design of the manufacturer to operate as a complete system for the intended use.

F. Qualification of Installer: Metal roof system installer must be licensed in the state or municipality where the project will take place, and shall be factory trained by the manufacturer. Installer shall have a minimum of three years’ experience installing the specified roof system. Supply the names, locations and client contact information of 5 projects of similar size and scope constructed by applicator using the manufacturer's roofing products submitted for this project within the previous three years.

G. All trim shall be manufactured in a facility owned and operated by the manufacturer of the roofing system.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, and handle panel materials, bulk roofing products, accessories, and other manufactured items in a manner to prevent damage and deformation, as recommended by the manufacturer, and as specified.

B. Delivery: Package and deliver materials to the site in undamaged condition. Provide adequate packaging to protect materials during shipment. Do not uncrate materials until ready for use, except for inspection. Immediately upon arrival of materials at jobsite, inspect materials for damage, deformation, dampness, and staining. Remove affected materials from the site and immediately replace. Remove moisture from wet materials not otherwise affected, restack and protect from further moisture exposure.

C. Handling: Handle materials in a manner to avoid damage. Select and operate material handling equipment so as not to damage materials or applied roofing.

D. Storage: Stack materials stored on site on platforms or pallets, and cover with tarpaulins or other weathertight covering which prevents trapping of water or condensation under the covering. Store roof panels so that water which may have accumulated during transit or storage will drain off. Do not store panels in contact with materials that might cause staining. Secure coverings and stored items to protect from wind displacement.

E. Manufacturer must have a manufacturing facility within 400 miles of job location.

F. All roofing materials shall be delivered on trucks owned and operated by the manufacturer of the roof system.

1.8 WARRANTY

A. Furnish the metal roof panel manufacturer's warranty as described below and subject to the applicable terms, conditions, and exclusions:

1. Warrant that roofing system will not as a result of corrosion rupture, fail structurally, or perforate for a period of 20 years. (No Dollar Limit]

1.9 CONFORMANCE AND COMPATABILITY

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A. The entire metal roofing and flashing system must be in accordance with specified and indicated requirements, including wind requirements. Work not specifically addressed and any deviation from specified requirements must be in general accordance with recommendations of the MBMA RSDM, NRCA, the metal panel manufacturer's published recommendations and details, and compatible with surrounding components and construction. Submit any deviation from specified or indicated requirements to the project manager for approval prior to installation.

PART 2 PRODUCTS

2.1 MANUFACTURER

A. Basis of Design Manufacturer: See drawings.

1. 26ga steel5V Crimp with 7/16” tall seam 24” coverage.

2.2 PERFORMANCE REQUIREMENTS

A. Material:

1. Steel panels and accessory components must conform to the following standard(s): ASTM A792 and ASTM A924

2. Aluminum panels and accessory components must conform to the following standard(s): ASTM B209

B. Wind Uplift

1. Provide metal roof panel system tested according to UL 580. Uplift force due to wind action governs the design for panels. Roof system and attachments must resist the wind loads as determined by ASCE 7, in pounds per square foot.

C. Impact Resistance

1. Provide UL Class 4 metal roof panel system tested according to UL 2218.

D. Fire Testing

1. Provide a Class A metal roof panel system tested according to UL 790.

2.3 METAL ROOF PANEL ACCESSORIES

Accessories must be compatible with the metal roof panels. Sheet metal flashing, trim, metal closure strips, caps, and similar metal accessories must be not less than the minimum thicknesses specified for roof panels. Provide exposed metal accessories to match the panels furnished [except as otherwise indicated]. Molded foam rib, ridge and other closure strips must be closed-cell or solid-cell synthetic rubber or neoprene pre-molded to match configuration of the panels and not absorb or retain water. Pre-manufactured accessories must be manufacturer's standard for intended purpose, compatible with the metal roof system and approved for use by the metal roof panel manufacturer. Support all rooftop equipment/penetrations with curbs designed to structurally support the intended use. Construct curbs to match roof slope.

A. Fasteners:

1. Exposed Fasteners: Fasteners for roof panels must be corrosion resistant stainless steel, compatible with the sheet panel or flashing material and of the type and size recommended by the manufacturer to meet the performance requirements and design loads. Fasteners for accessories must be the manufacturer's standard. Provide an integral metal washer, matching the color of attached material with compressible sealing EPDM gasket.

2. Screws: Provide corrosion resistant screws, stainless steel of the type and size recommended by the manufacturer to meet the performance requirements.

3. Rivets: Provide blind rivets, corrosion resistant stainless steel, and color matched. Seat rivets in polyether sealant where watertight connections are required.

B. Sealants: Basis of Design Titebond WeatherMaster Metal Roof Sealant

1. Sealants shall be a polyether containing a minimum solid content of 99 percent of the total volume.

2. Shall be tested in accordance with ASTM C920 Type S, Grade NS, Class 50, Use NT, T, G, A and O.

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3. Sealant shall have an additive within it that allows it to stick to PVDF coated metal without applying a primer.

4. Field Applied Sealants: Color to match panel color.

5. Tape Sealants: Provide pressure sensitive, 100 percent solid tape sealant with a release paper backing; permanently elastic, non-sagging, non-toxic and non-staining as approved by the roof panel manufacturer.

C. Sheet Metal Flashing and Trim: All flashing shall be manufactured by the roof system manufacturer. Obtain and verify field measurements for accurate fit prior to shop fabrication. Fabricate flashing and trim without excessive oil canning, buckling, and tool marks, true to line and levels indicated, with exposed edges folded back to form hems.

D. Underlayment: Provide self-adhering modified underlayment material in compliance with

ASTM D1970/D1970M, suitable for use as underlayment for metal roofing, 60 mils thick.

Use membrane resistant to cyclical elevated temperatures for extended period of time in high heat service conditions. Provide membrane with integral non-tacking top surface of polyethylene film or other surface material to serve as separator between bituminous material and metal products to be applied above.

E. Gaskets: Gaskets and sealing/insulating compounds must be nonabsorptive and suitable for insulating contact points of incompatible materials. Sealing/insulating compounds must be non-running after drying.

F. Finish Repair Materials: Repair paint for color finish enameled roofing must be compatible paint of the same formula and color as the specified finish furnished by the manufacturer. Only use repair and touch-up paint supplied by the roof panel manufacturer and is compatible with the specified system.

2.4 FABRICATION

A. Fabricate and finish metal roof panels and accessories on a factory stationary roll former to the greatest extent possible, per manufacturer's standard procedures and processes, and as necessary to fulfill indicated performance requirements. Comply with indicated profiles, dimensional and structural requirements.

2.5 FINISHES

A. Finish quality and application processes must conform to the related standards specified within this section. Noticeable variations within the 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 any contrasting variations.

B. All panels are to receive a factory applied polyvinylidene fluoride/Kynar (PVDF) finish consisting of a baked topcoat with a manufacturer's recommended prime coat conforming to the following:

1. Manufacturer: Akzo Nobel

2. Color: The exterior finish chosen from the manufacturer's standard color chart.

3. Physical Properties: Coating must conform to the industry and manufacturer's standard performance criteria as listed by the following certified test reports:

i. Finish shall contain 70% PVDF

ii. Abrasion: ASTM D968

iii. Adhesion: ASTM D3359

iv. Chemical Pollution: ASTM D1308

v. Flame Spread: ASTM E84

vi. Flexibility: ASTM D522

vii. Formability: ASTM D522

viii. Specular Gloss: ASTM D523

ix. Humidity: ASTM D2247

x. Pencil Hardness: ASTM D3363

xi. Reverse Impact: ASTM D2794

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xii. Salt Spray: ASTM B117

xiii. Weatherometer: ASTM G152, ASTM G153 and ASTM D822 or ASTM

D3361, ASTM D4587, and ASTM G23

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas, and conditions for compliance with requirements for installation tolerances, metal roof panel supports, and other conditions affecting performance of the work. Ensure surfaces are suitable, dry and free of defects and projections which might affect the installation.

B. Examine primary and secondary roof framing to verify that rafters, purlins, angles, channels, and other structural support members for panels and anchorages have been installed within alignment tolerances required by metal roof panel manufacturer, UL, ASTM, and ASCE 7.

C. Examine solid roof sheathing to verify that sheathing joints are supported by framing or blocking; and that installation is within flatness tolerances required by metal roof panel manufacturer, or total variation less than ±1/2” from line of true slope in 10’.

D. Examine rough-in for components and systems penetrating metal roof panels to verify actual locations of penetrations relative to seam locations of panels prior to installation.

E. Submit a written report to the project manager listing conditions detrimental to the performance of the work. Proceed with installation only after defects have been corrected or the impacts identified have been accepted in writing.

3.2 METAL PANEL INSTALLATION

A. Installation must meet specified requirements and be in accordance with the manufacturer's installation instructions and approved shop drawings. Do not install damaged materials. Dissimilar materials which are not compatible when contacting each other must be insulated by means of gaskets or sealing/insulating compounds. Keep all exposed surfaces and edges clean and free from sealant, metal cuttings, hazardous burrs, and other foreign material. Remove stained, discolored, or damaged materials from the site.

B. Preparation:

1. Clean all substrate substances which may be harmful to roof panels including removing projections capable of interfering with roof panel attachment.

2. Install sub-purlins, eave angles, furring, decking, and other miscellaneous roof panel support members and anchorage according to manufacturer's written instructions, the project design, and applicable codes.

C. Underlayment:

1. Install underlayment according to the underlayment manufacturer’s written recommendations, the roof panel manufacturer's written recommendations and recommendation in NRCA "The NRCA Roofing and Waterproofing Manual".

2. Show the extent and location of the appropriate underlayment on the drawings.

The underlayment must ensure that any water penetrating below the roof panels will drain outside of the building envelope.

3. Install self-adhering sheet underlayment; wrinkle free on roof deck. Comply with temperature installation restrictions of manufacturer where applicable. Install at locations indicated on project drawings, lapped in a direction to shed water. Lap sides not less than 4 inches. Lap ends not less than 6 inches staggered 24 inches between courses. Cover underlayment within 30 days

D. Metal Panel Installation

1. Provide metal roof panels of full length from eave to ridge or eave to wall as indicated, unless otherwise indicated or restricted by shipping limitations. Anchor metal roof panels or other components of the Work securely in place, with

METAL ROOFING 07411-7

provisions for thermal and structural movement in accordance with NRCA 0420.

Use approved fasteners and clips as required by section 2.3.

2. Metal Protection: Where dissimilar metals contact each other or possibly corrosive substrates, protect against galvanic action by applying rubberized asphalt underlayment to each contact surface.

3. Joint Sealers: Install gaskets, joint fillers, and sealants where indicated and required for weatherproof performance of metal roof panel system. Provide types of gaskets, fillers, and sealants indicated or, if not indicated, types recommended by metal roof panel manufacturer.

4. Handling and Erection

i. Erect roofing system in accordance with the approved erection drawings, printed instructions and safety precautions of the manufacturer.

ii. Do not subject panels to overloading, abuse, or undue impact. Do not apply bent, chipped, or defective panels. Damaged panels must be replaced and removed from the site at the contractor’s expense. Erect panels true, plumb, and in exact alignment with the horizontal and vertical edges of the building, securely anchored, and with indicated rake, eave, and curb overhang. Allow for thermal movement of the roofing, movement of the building structure, and provide permanent freedom from noise due to wind pressure.

iii. Do not permit storage, walking, wheeling or trucking directly on applied roofing materials. Provide temporary walkways, runways, and platforms of smooth clean boards or planks as necessary to avoid damage to the installed roofing materials, and to distribute weight to conform to the indicated live load limits of the roof construction.

iv. Roof panels must be laid with corrugations in the direction of the roof slope. End laps of exterior roofing must not be less than 12 inches; side laps of standard exterior corrugated panels must not be less than 2-1/2 corrugations (or one rib for Gulf Rib or GulfPBR panels)

v. Field cutting of metal roof panels by torch or abrasive blades is not permitted. Field cut only as recommended by manufacturer's written instructions.

5. Closure Strips

i. Install closure strips at open ends of metal ridge rolls; open ends of corrugated or ribbed pattern roofs, and at intersection of wall and roof, unless open ends are concealed with formed eave flashing; rake of metal roof unless open end has a formed flashing member; and in other required areas.

ii. Install closure strips at intersection of the wall with metal roofing; top and bottom of metal siding; heads of wall openings; and in other required locations.

6. Workmanship

i. Make lines, arises, and angles sharp and true. Free exposed surfaces from any visible wave, warp, buckle and tool marks. Make sheet metal exposed to the weather watertight with provisions for expansion and contraction.

ii. Make surfaces to receive sheet metal plumb and true, clean, even, smooth, dry, and free of defects and projections which might affect the application. For installation of items not shown in detail or not covered by specifications conform to the applicable requirements of SMACNA.

Provide sheet metal flashing in the angles formed where roof decks abut

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walls, curbs, ventilators, pipes, or other vertical surfaces and wherever indicated and as necessary to make the work watertight.

3.3 ACCESSORY INSTALLATION

A. Fastener Installation: Anchor metal roof panels and other components of the Work securely in place, using approved fasteners according to manufacturer's written instructions.

B. Flashing, Trim, and Closure Installation

1. Comply with performance requirements, manufacturer's written installation instructions, and SMACNA. Provide concealed fasteners where possible. Set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently water tight and weather resistant. Work is to be accomplished to form weather tight construction without waves, warps, buckles, fastening stresses or distortion, and to allow for expansion and contraction.

Cutting, fitting, drilling, and other operations in connection with sheet metal required to accomplish the work must conform to the manufacturers written instructions.

2. Install exposed metal flashing at building corners, rakes, eaves, junctions…