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39 KB
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SECTION 07 40 00
ROOFING AND SIDING PANELS
SPEC WRITER NOTE:
if not applicable
any other item or
applicable in the
the paragraphs.
Delete between //
//
to project. Also delete
paragraph not
section and renumber
PART 1 - GENERAL
1.1 DESCRIPTION:
A. This section specifies // insulated // // uninsulated // metal
// wall // // and roof panels // // and fire rated composite metal wall
and roof systems // as shown on contract documents.
1.2 RELATED WORK:
//A. Sustainable Design Requirements: Section 01 81 13, SUSTAINABLE DESIGN
REQUIREMENTS.//
B. Sealant: Section 07 92 00, JOINT SEALANTS.
C. Color and texture of finish: Section 09 06 00, SCHEDULE FOR FINISHES.
1.3 QUALITY ASSURANCE:
A. Manufacturer’s Qualifications: Provide metal wall and roof panels //
and composite metal wall and roof systems // products of a manufacturer
regularly engaged for not less than five (5) years in the fabrication
of metal panels // and composite metal wall and roof systems // of the
type and design indicated.
B. Installer: A firm with three (3) years of successful experience with
installation of roofing and siding panels of type and scope equivalent
to Work of this Section. Submit installer qualifications.
1.4 FIRE RATING:
A. Composite metal wall // and roof // systems to have a fire rating of
//
// hours when tested in accordance with ASTM E119.
1.5 SUBMITTALS:
A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT
DATA, AND SAMPLES.
// B. Sustainable Design Submittals, as described below:
// 1. Postconsumer recycled content as specified in
PART 2 - PRODUCTS. // //
C. Samples: Metal panel, 152 mm (6 inch) square, showing finish, each
color and texture.
D. Shop Drawings: // Wall // // and roof // panels, showing details of
construction and installation. // Collateral steel framing // // U
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value // thickness and kind of material, closures, flashing, fastenings
and related components and accessories. Show interfaces and
relationships to work at other trades and continuity with adjacent
thermal, weather, air and vapor barriers.
E. Manufacturer's Literature and Data: // Wall // // and roof // panels
F. Fire Test Report: Report of fire test by recognized testing laboratory
for fire rating specified, showing details of construction.
G. Manufacturer’s Certificates: Indicating manufacturer’s qualifications
specified.
H. Installer qualifications.
I. Manufacturer warranty.
1.6 QUALITY ASSURANCE:
A. Approval by Contracting Officer Representative (COR) is required of
products of proposed manufacturer.
B. Certify manufacturer has five (5) years continuous documented
experience in fabrication of metal roofing and siding panels.
C. Source: For each material type required for work of this section,
provide primary materials, which are products of one manufacturer.
Provide secondary or accessory materials, which are acceptable to
manufacturers of primary materials.
D. Installer: A firm with a minimum of three (3) years’ experience in type
of work required by this section and which is acceptable to
manufacturers of primary materials.
1.7 WARRANTY:
A. Construction Warranty: Comply with FAR clause 52.246-21 “Warranty of
Construction”.
B. Manufacturer Warranty: Manufacturer shall warranty their metal //
roofing // // and wall panels // for a minimum of ten (10) years
//
// from the date of installation and final acceptance by the
Government. Submit manufacturer warranty.
C. Warranty on Panel Finishes: Manufacturer’s shall warrant their
// roofing // // and wall panel // finish and provide standard
agreement to repair finish or replace metal panels that show evidence
of deterioration of factory-applied finishes within specified warranty
period.
1. Exposed Panel Finish: Deterioration includes, but is not limited to,
the following:
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a. Color fading more than 5 Hunter units when tested according to
ASTM D2244.
b. Chalking in excess of a No. 8 rating when testing according to
ASTM D4214.
c. Cracking, checking, peeling, or failure of paint to adhere to
bare metal.
2. Finish Warranty Period: // 20 // // 10 // years from date of
installation and final acceptance by the COR.
1.8 APPLICABLE PUBLICATIONS:
A. The publications listed below form a part of this specification to the
extend referenced. The publications are referenced in the text by the
basic designation only.
B. American Architecture Manufacturers Association (AAMA):
611-14 ................. Anodized Architectural Aluminum
621-02 ................. Voluntary Specifications for High Performance
Organic Coatings on Coil Coated Architectural
Hot Dipped Galvanized (HDG) and Zinc-Aluminum
Coated Steel Substrates
2605-13 ................ Voluntary Specification, Performance
Requirements and Test Procedures for Superior
Performing Organic Coatings on Aluminum
Extrusions and Panels
C. American Iron and Steel Institute (AISI):
SG03-02 ................ Cold-Formed Steel Design Manual
D. ASTM International (ASTM):
A463/A463M-10 .......... Steel Sheet, Cold-Rolled, Aluminum-Coated, by
the Hot-Dip Process
A653/A653M-13 .......... Steel Sheet, Zinc-Coated (Galvanized), or ZincIron Alloy-Coated (Galvannealed) by the Hot-Dip
Process.
A924/A924M-14 .......... Steel Sheet, Metallic Coated by the Hot-Dip
Process
A1008/A1008M-10 ........ Steel, Sheet, Cold-Rolled, Carbon, Structural,
High Strength Low Alloy
B209-14 ................ Aluminum and Aluminum Alloy Sheet and Plate
B209M-14 ............... Aluminum and Aluminum Alloy Sheet and Plate
(Metric)
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C553-13 ................ Mineral Fiber Blanket Thermal Insulation for
Commercial and Industrial Applications
C591-13. ............... Unfaced Preformed Rigid Cellular
Polyisocyanurate Thermal Insulation
C612-14 ................ Mineral Fiber Block and Board Thermal
Insulation
C1396/C1396M ........... Gypsum Board
D2244-14 ............... Calculation of Color Tolerances and Color
Differences from Instrumentally Measured Color
Coordinates
D4214-07 ............... Test Methods for Evaluating the Degree of
Chalking of Exterior Paint Films
E119-14 ................ Fire Test of Building Construction and
Materials
E283-04(R2012) ......... Test Method for Determining Rate of Air Leakage
Through Exterior Windows, Curtain Walls, and
Doors Under Specified Pressure Differences
Across the Specimen
E331-00(R2009) ......... Test Method for Water Penetration of Exterior
Windows, Skylight, Doors, and Curtain Walls by
Uniform Static Air Pressure Difference
E1592-10 ............... Terminology Relating to Occupational Health and
Safety
E1646-95(R2011) ........ Test Method for Water Penetration of Exterior
Metal Roof Panel Systems by Uniform Static Air
Pressure Difference
E1680-11 ............... Test Method for Rate of Air Leakage Through
Exterior Metal Roof Panel Systems
E1980-11 ............... Calculating Solar Reflectance Index of
Horizontal and Low-Sloped Opaque Surfaces
E2140-01(R2009) ........ Test Method for Water Penetration of Metal Roof
Panel Systems by Static Water Pressure Head
E. Cool Roof Rating Council (CRRC):
1 Standard-14
F. FM Global:
4471-10 ................ Class 1 Panel Roofs
G. Underwriters Laboratories (UL):
580-05(R2013) .......... Tests for Uplift Resistance of Roof Assemblies
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Fire Resistance Directory
PART 2 - PRODUCTS
SPEC WRITER NOTE: Delete this entire
paragraph if roof panels are not used.
2.1 PERFORMANCE REQUIREMENTS ROOF PANELS:
A. Energy Performance: Provide roof panels according to one of the
following when tested according to CRRC-1:
1. Three-year, aged solar reflectance of not less than 0.55 and
emissivity of not less than 0.75.
2. Three-year, aged Solar Reflectance Index (SRI) of not less than 64
//
// when calculated according to ASTM E1980.
SPEC WRITER NOTE: Coordinate wind and
other design with that identified on
drawings or required by code for location
of project.
B. Structural Performance: Provide metal panel systems capable of
withstanding the effects of the following loads, based on testing
according to ASTM E1592.
1. Wind Loads: //
//.
2. Other Design Loads: //
//.
3. Deflection Limits: For wind loads, no greater than // 1/180 //
// 1/240 // of the span.
C. Air Infiltration: Air leakage of not more than 0.3 L/s per sq. m
(0.06 cfm/sq. ft.) when tested according to ASTM E1680 or ASTM E283 at
the following test-pressure difference:
1. Test-Pressure Difference: // 75 Pa (1.57 lbf/sq. ft.) // // 300 Pa
(6.24 lbf/sq. ft.) //.
D. Water Penetration under Static Pressure: No water penetration when
tested according to ASTM E1646 or ASTM E331 at the following
test-pressure difference:
1. Test-Pressure Difference: // 137 Pa (2.86 lbf/sq. ft.) // // 300 Pa
(6.24 lbf/sq. ft.) //.
E. Hydrostatic-Head Resistance: No water penetration when tested according
to ASTM E2140.
F. Wind-Uplift Resistance: Provide metal roof panel assemblies that comply
with UL 580 for wind-uplift-resistance class indicated.
1. Uplift Rating: // UL 30 // // UL 60 // // UL 90 //.
G. FM Global Listing: Provide metal roof panels and composite component
materials that comply with requirements FM Global 4771 as part of a
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panel roofing system and that are listed in FM Global’s “Approval
Guide” for Class 1 or noncombustible construction, as applicable.
Identify materials with FM Global markings.
1. Fire/Windstorm Classification: Class 1A- // 60 // // 75 // // 90 //
// 120 // // 105 //.
2. Hail Resistance: // MH // // SH //.
H. Thermal Movements: Allow for thermal movements from ambient and surface
temperature changes by preventing buckling, opening of joints,
overstressing of components, failure of joints sealants, failure of
connections, and other detrimental effects. Base calculations on
surface temperatures of materials due to both solar heat gain and
nighttime-sky heat loss.
1. Temperature Change (Range): 67 degrees C (120 degrees F), ambient;
100 degrees C (180 degrees F), material surfaces.
SPEC WRITER NOTE: Delete this entire
paragraph if wall panels are not used.
2.2 PERFORMANCE REQUIREMENTS FOR WALL PANELS:
SPEC WRITER NOTE: Coordinate wind load
and other design load requirements with
that identified on drawings or required
by code for location of project.
A. Structural Performance: Provide metal panel systems capable of
withstanding the effects of the following loads, based on testing
according to ASTM E1592.
1. Wind Loads: //
//.
2. Other Design Loads: //
//.
3. Deflection Limits: For wind loads, no greater than // 1/180 //
// 1/240 // of the span.
B. Air Infiltration: Air leakage of not more than 0.3 L/s per sq. m
(0.06 cfm/sq. ft.) when tested according to ASTM E283 at the following
test-pressure difference:
1. Test-Pressure Difference: // 75 Pa (1.57 lbf/sq. ft.) // // 300 Pa
(6.24 lbf/sq. ft.) //.
C. Water Penetration under Static Pressure: No water penetration when
tested according to ASTM E331 at the following test-pressure
difference:
1. Test-Pressure Difference: // 137 Pa (2.86 lbf/sq. ft.) // // 300 Pa
(6.24 lbf/sq. ft.) //.
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D. Thermal Movements: Allow for thermal movements from ambient and surface
temperature changes by preventing buckling, opening of joints,
overstressing of components, failure of joints sealants, failure of
connections, and other detrimental effects. Base calculations on
surface temperatures of materials due to both solar heat gain and
nighttime-sky heat loss.
1. Temperature Change (Range): 67 degrees C (120 degrees F), ambient;
100 degrees C (180 degrees F), material surfaces.
//E. Fire-Resistance Ratings: Comply with ASTM E119; testing by a
qualified testing agency. Identify products with appropriate markings
of applicable testing agency.
1. Indicate design designations from UL’s Fire Directory or from the
listings of another qualified testing agency. //
SPEC WRITER NOTE: Make material
requirements agree with applicable
requirements specified in the referenced
Applicable Publications. Update and
specify only that which applies to the
project.
2.3 SHEET STEEL:
A. Minimum 0.8 mm (0.31 inch) thick for wall and roof panels.
B. Steel, Sheet, Galvanized: ASTM A653/A653M and AISI SG03-3, Structural.
1. Grade 40, galvanized coating conforming to ASTM A924/A924M, Class Z
275 G-90.
C. Steel, Sheet, Commercial: ASTM A1008, Type C.
D. Steel, Sheet, Aluminized: ASTM A463/A463M and AISI SG03-3. Steel to be
coated on both sides with 0.15 Kg/sq. m (0.5 ounce of aluminum per
square foot).
//E. Recycled Content of Steel Products: Postconsumer recycled content not
less than // 30 // //
// percent. //
2.4 ALUMINUM PLATE AND SHEET:
A. ASTM B209M (B209).
2.5 FASTENERS:
//A. Fasteners for Steel Panels: Galvanized or cadmium plated steel.//
//B. Fasteners for Aluminum Panels to be aluminum or stainless steel.//
//C. Fasteners of size, type and holding strength as recommended by panel
manufacturer. //
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2.6 GYPSUM BACKING BOARD:
A. ASTM C1396/C1396M, Type X, Plain face, Square edge.
2.7 THERMAL INSULATING MATERIALS:
A. Urethane or Isocyanurate Board: ASTM C591, Type I.
B. Mineral Fiber Blankets: ASTM C553, Type I.
C. Mineral Fiber Board: ASTM C612, Class I.
2.8 FABRICATION:
A. General:
1. Furnish panels in one continuous length for full height, // or at
least one story height for wall panels // with no horizontal joints,
except at cut-outs or openings as required for the passage of pipes,
conduits, vents and the like.
2. Construct panels by pressing members together to form a structural
unit with closed ends.
3. Overall thickness of panels is shown of the contract documents.
4. Provide connection between panels by // interlocking male and female
joints // // interlocking joints filled with sealant //. Seal joints
between related components as required to make the work water-tight.
Refer to Section 07 92 00, JOINT SEALANTS for sealing compounds.
5. Provide // collateral steel framing, // metal and bituminous
closures, fastenings, flashing, clip, caulking, // panel
reinforcements for support of mechanical and electrical work as
shown on the contract documents, // and related components and
accessories.
a. Sub-girts: 1.0 mm (0.0396 inches) thick galvanized steel hat
channels deigned to receive panel fasteners or clips.
b. Accessories, fastenings, and flashings to be the same material
and finish as the panels. Thickness and installation of
accessories and flashing to be as recommended by the panel
manufacturer.
B. Insulated Metal Panels:
1. Panels to consist of a structurally reinforced insulated core,
fastened between an exterior face sheet and an interior liner sheet.
2. Exterior Face Sheets:
a. // 0.8 // // 1.0 // // 1.25 // // mm (// 0.032 // // 0.040 //
// 0.050 // inch) thick aluminum.
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b. // 1.2 // // 0.9 // // 0.6 // // 0.5 // mm (// 0.0478 //
// 0.0359 // // 0.0229 // // 0.0239 // inch) thick uncoated
steel.
c. // 1.3 // // 1.0 // // 0.85 // // 0.7 // // 0.6 // mm
(// 0.0516 // // 0.0396 // // 0.0336 // // 0.0276 // // 0.0247 //
inch) thick galvanized steel.
d. // 0.8 // // 1.25 // mm (// 0.032 // // 0.050 // inch) thick
aluminized steel.
3. Interior Liner Face Sheet:
a. // 0.8 // // 1.0 // // 1.25 // // mm (// 0.032 // // 0.040 //
// 0.050 // inch) thick aluminum.
b. // 1.2 // // 0.9 // // 0.6 // // 0.5 // mm (// 0.0478 //
// 0.0359 // // 0.0229 // // 0.0239 // inch) thick uncoated
steel.
c. // 1.3 // // 1.0 // // 0.85 // // 0.7 // // 0.6 // mm
(// 0.0516 // // 0.0396 // // 0.0336 // // 0.0276 // // 0.0247 //
inch) thick galvanized steel.
SPEC WRITER NOTE: Verify use of urethane
or isocyanurate insulation in VA hospital
patient and other public areas.
4. Insulation:
a. Provide // urethane board //
fiber blanket //
// isocyanurate //
// mineral
// mineral fiber board // having a “U” value of
// 0.85 //
// 1.2 // //
// 0.21 //
//
// W/ (sq. meter x K) (// 0.15 //
// Btu/ [h x sq. ft. x degrees F]).
C. Uninsulated Metal Panels:
1. Panels to consist of a structurally reinforced air-space fastened
between two metal face sheets.
2. Panels:
a.
// 0.8 //
// 1.0 //
// 0.040 //
b. // 1.2 //
// mm (// 0.032 //
// 0.050 // inch) thick aluminum.
// 0.9 //
// 0.0359 //
// 1.25 //
// 0.6 //
// 0.0229 //
// 0.5 // mm (// 0.0478 //
// 0.0239 // inch) thick uncoated
steel.
c. // 1.3 //
// 1.0 //
(// 0.0516 //
// 0.85 //
// 0.0396 //
// 0.7 //
// 0.0336 //
// 0.0247 // inch) thick galvanized steel.
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// 0.6 // mm
// 0.0276 //
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d. // 0.8 //
// 1.25 // mm (// 0.032 //
// 0.050 // inch) thick
aluminized steel.
D. Composite Metal Wall Systems:
1. Panels consisting of an exterior face sheet, sub-girts, gypsum
backing board panels, insulation, and interior liner sheet.
2. Panel Composition:
a. Exterior face sheet of 0.9 mm (0.0359 inch) thick sheet steel of
indicated configuration and pattern.
b. Gypsum backing board used for wall panels to be of the same type
for each layer.
c. Interior liner sheet of 0.7 mm (0.0276 inch) thick galvanized
sheet steel of flush pattern.
d. Insulation to be mineral fiber blankets installed on interior
face of liner sheet.
E. Fabricate wall louvers and frames used in conjunction with walls panels
to be of same material, thickness and finish as exterior face sheets of
wall system. Louver assembly to be designed and installed to prevent
infiltration of water into structure.
2.9 FINISH:
A. For insulated and uninsulated wall and roof panels // and composite
wall and roof panels //, provide finishes as follows for face sheets.
Prepare, pretreat, and apply coating to exposed metal surfaces to
comply with coating and resin manufacturers’ written instructions.
//B. Energy Performance: Provide roof panels with solar reflectance index
not less than //
// when calculated according to ASTM E1980 based on
testing identical products by a qualified testing agency.//
C. Provide aluminum alloy for color coating as required to produce
specified color. Provide color as specified in Section 09 06 00,
SCHEDULE FOR FINISHES. Color for sheet aluminum to not deviate more
than the colors of extrusion samples.
//1. Two-Coat Fluoropolymer: AAMA 2605. Fluoropolymer finish containing
not less than 70 percent PVDF resin by weight in color coat. //
//2. Three-Coat Fluoropolymer: AAMA 2605. Fluoropolymer finish coating
not less than 70 percent PVDF resin by weight in both color coat and
clear topcoat. //
//3. Mica Fluoropolymer: AAMA 2605. Two-coat fluoropolymer finish with
suspended mica flakes containing not less than 70 percent PVDF resin
by weight in color coat. //
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//4. Metallic Fluoropolymer: AAMA 2605. Three-coat fluoropolymer finish
with suspended metallic flakes containing not less than 70 percent
PVDF resin by weight in both color coat and clear topcoat. //
//5. FEVE Fluoropolymer: AAMA 2605. Two-coat fluoropolymer finish
containing 100 percent fluorinated ethylene vinyl ether resin in
color coat. //
//6. Siliconized Polyester: Epoxy primer and silicone-modified,
polyester-enamel topcoat; with a dry film thickness of not less than
0.005 mm (0.2 mil) for primer and 0.02 mm 0.8 mil for topcoat. //
//7. Exposed Anodized Finish: //
a. Clear Anodic Finish: AAMA 611, //AA-M12C22A41, Class I, 0.018 mm
(0.7 mil) (min.)// //M12C22A31, Class II, 0.010 mm (0.4 mil)
(min.)//
b. Color Anodic Finish: AAMA 611, //AA-M12C22A42/A44, Class I,
0.018 mm (0.7 mil) (min.)// //AA-M12C22A32/A34, Class II,
0.010 mm (0.4 mil) (min.)//.
D. Provide finishes for steel face sheets as follows. Prepare, pretreat,
and apply coating to exposed metal surfaces to comply with coating and
resin manufacturers’ written instructions.
//1. Two-Coat Fluoropolymer: AAMA 2605. Fluoropolymer finish containing
not less than 70 percent PVDF resin by weight in color coat. //
//2. Three-Coat Fluoropolymer: AAMA 2605. Fluoropolymer finish coating
not less than 70 percent PVDF resin by weight in both color coat and
clear topcoat. //
//3. Mica Fluoropolymer: AAMA 2605. Two-coat fluoropolymer finish with
suspended mica flakes containing not less than 70 percent PVDF resin
by weight in color coat. //
//4. Metallic Fluoropolymer: AAMA 2605. Three-coat fluoropolymer finish
with suspended metallic flakes containing not less than 70 percent
PVDF resin by weight in both color coat and clear topcoat. //
//5. FEVE Fluoropolymer: AAMA 2605. Two-coat fluoropolymer finish
containing 100 percent fluorinated ethylene vinyl ether resin in
color coat. //
//6. Siliconized Polyester: Epoxy primer and silicone-modified,
polyester-enamel topcoat; with a dry film thickness of not less than
0.005 mm (0.2 mil) for primer and 0.02 mm (0.8 mil) for topcoat. //
//7. Concealed Finish: Apply pretreatment and manufacturer’s standard
white or light-colored acrylic or polyester backer finish consisting
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of prime coat and wash coat with a minimum total dry film thickness
of 3 mm (0.5 mil).
PART 3 - EXECUTION
3.1 INSTALLATION:
A. General: Install panels in accordance with the manufacturer's approved
erection instructions and diagrams, except as specified otherwise.
B. Install panels in full and firm contact with supports and with each
other at side and end laps.
C. Where panels are cut in the field, or where factory applied coverings
or coatings are abraded or damaged in handling or installation, make
finish repairs with material of the same type and color as the weather
coating, before being installed.
D. Seal cut ends and edges, including those at openings through the
sheets.
E. Correct defects or errors in the materials in a manner approved by the
COR.
F. Replace defective materials which cannot be corrected with nondefective
material.
G. Provide molded closure strips where indicated and whenever sheets
terminate with open ends after installation.
H. Wall Panels:
1. Apply panels with the configuration in a vertical position.
2. Provide panels in // the longest obtainable lengths, with end laps
occurring only at structural members // full heights from base to
eave with no horizontal joints except at the junctions of door
frames, window frames, louver panels, and similar locations.//
3. Seal side and end laps with joint sealing material.
4. Flash and seal walls at the base, at the top, around windows, door
frames, framed louvers, and other similar openings. Install closure
strips, flashings, and sealing material in an approved manner that
will assure complete weather tightness.
5. Flashing is not required where approved "self-flashing" panels are
used. //
//I. Roof Panels:
1. Apply roofing panels with the configurations parallel to the slope
of the roof. Provide roofing panels in //the longest lengths
obtainable, with end laps occurring only at structural members //
full lengths from ridge (or ridge panel) to eaves // top to eaves on
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shed roofs, // with no transverse joints except at the junction of
ventilators, curbs, skylights, chimneys and similar openings //.
2. Lay side laps away from the prevailing wind, and seal side and end
laps with joint sealing material.
3. Flash and seal the roof at the ridge, at eaves and rakes, at
projections through the roof, and elsewhere as necessary.
4. Install closure strips, flashing, and sealing material in a manner
that will assure complete weather tightness.//
J. Flashing:
1. Provide flashing and related closures and accessories in connection
with the preformed metal panels as indicated and as necessary to
provide a watertight installation.
2. Install details of installation, which are not indicated, in
accordance with the panel manufacturer's printed instruction and
details, or the approved shop drawings.
3. Allow for expansion and contraction of flashing.
K. Fasteners:
1. Space fasteners in accordance with the manufacturer's
recommendations, and as necessary to withstand the design loads
indicated.
2. Install fasteners in valleys or crowns as recommended by the
manufacturer of the panel being used.
3. Install fasteners in straight lines within a tolerance of 13 mm
(1/2-inch) in the length of a bay.
4. Drive exposed penetrating type fasteners normal to the surface, and
to a uniform depth to seat gasketed washers properly, and drive so
as not to damage factory applied coating.
5. Exercise care in drilling pilot holes for fastenings to keep drills
perpendicular and centered in valleys, or crowns, as applicable.
After drilling, remove metal filings and burrs from holes prior to
installing fasteners and washers. Do not torque fasteners to exceed
values recommended by the manufacturer.
6. Remove panels deformed or otherwise damaged by over-torqued
fastenings, and provide new panels.
7. Remove metal shavings and filings from roofs on completion to
prevent rusting and discoloration of the panels.
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3.2 ISOLATION OF ALUMINUM:
A. Isolate aluminum in contact with or fastened to dissimilar metals other
than stainless steel, white bronze, or other metal compatible with
aluminum by one of the following:
1. Painting the dissimilar metal with a prime coat of Zinc-Molybdate
followed by two coats of aluminum paint.
2. Placing a non-abrasive tape or gasket between the aluminum and the
dissimilar metal.
B. Paint aluminum in contact with, or built into mortar, concrete,
plaster, or other masonry materials with a coat of alkali-resistant
bituminous paint.
C. Paint aluminum in contact with wood or other absorptive materials that
may become repeatedly wet, with two coats of bituminous paint, or two
coats of aluminum paint. Seal joints with caulking material.
3.3 PROTECTION AND CLEANING:
A. Protect panels and other components from damage during and after
erection, and until project is accepted by the COR.
B. After completion of work, all exposed finished surfaces of panels are
to be cleaned of soil, discoloration and disfiguration. Touch-up
abraded surfaces of panels.
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