MPS Master
SECTION 07 42 12
CONCEALED FASTENER METAL WALL PANELS
PART 1 - GENERAL
1.01
A.
B.
SUMMARY
Section Includes:
1.
Provide concealed fastener, field assembled, factory formed, profile metal wall panel system
on exterior vertical surfaces of exterior walls where noted on Drawings.
2.
Provide associated flashings, foam closures, concealed fasteners, aluminum trim, sealant,
and other accessories required for a complete, secure, and weathertight installation.
3.
Provide high temperature sheet membrane waterproofing over plywood wall sheathing.
Related Sections:
1.
1.02
A.
Section 06 10 00: Rough Carpentry.
PERFORMANCE REQUIREMENTS
Structural Performance: Provide exterior/interior wall cladding assemblies capable of
withstanding the effects of load and stresses from dead loads, wind loads, snow loads, and normal
thermal movement without evidence of permanent defects of assemblies or components.
1.
Dead Load: As required by applicable building code.
2.
Live Load: As required by applicable building code.
3.
Wind Load: Uniform pressure of 20 pounds per square foot, acting inward or outward.
4.
Thermal Movement: Provide assemblies that allow for thermal movements resulting from the
following maximum changes (range) in ambient and surface temperatures by preventing
buckling, opening of joints, over-stressing of components, and other detrimental effects:
a.
Temperature Change (Range): 120 degrees F (67 degrees C), ambient; 180 degrees F
(100 degrees C), material surfaces.
B.
Wall Panel System: Wall panel system, as specified by 2006 IBC 1403.2, must be an air and
water resistant barrier. Design of air and water resistant barrier shall be completed by a qualified
air and water membrane specialist.
C.
Joint Seals: Sealed joints shall allow free and silent movement of panels during expansion and
contraction while preventing uncontrolled penetration of moisture.
D.
Deformation: Manufacturing and installation shall prevent deformation of exposed surfaces.
E.
Tolerances: Design panel system to accommodate substructure tolerance of plus 0 to minus
1/8 inch.
F.
Not Permitted: Vibration harmonics; wind whistles; noises caused by thermal movement; thermal
movement transmitted to other building elements; loosening, weakening or fracturing of
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SECTION 07 42 12
attachments or components of system.
G.
Structural Performance/Uniform Load Deflection Test: Provide panel system which has been
tested in accordance with ASTM E330 at a design pressure of at least 60 psf without deformation
or failures of structural members. Maximum allowable deflection of span shall be L/180.
1.
Panels shall be tested in accordance with ASTM E1592 structural testing at load span of at
least 5 feet on center and shall perform at a design pressure of no less than 35 psf without
deformation or failures of structural members.
H.
Air Infiltration: Panel system shall not have air infiltration rate more than 0.06 cfm per square foot
of fixed wall area when tested in accordance with ASTM E283 at static air pressure differential of
6.24 psf.
I.
Static Water Penetration: Panel system shall have no water penetration as defined in test method
when tested in accordance with ASTM E331. ASTM E331 test shall be conducted at inward static
pressure differential of not less than 15.0 psf.
J.
Dynamic Water Penetration: Panel system shall have been tested in accordance with AAMA 501
and shall have passed with no uncontrolled water leakage at 15.00 psf dynamic pressure
differential, with water application rate of 5 gallons per hour per square foot.
1.03
SUBMITTALS
A.
General Requirements: Provide submittals in accordance with Section 01 33 00.
B.
Product Data: Manufacturer’s product literature for concealed fastener profiled wall panel system
as specified.
C.
Shop Drawings:
D.
E.
1.
Provide Shop Drawings of installation and sheet metal details.
2.
Shop Drawings shall clearly indicate materials, fastening and anchoring devices, finishes,
dimensions, flashings, termination details, relationship to adjacent materials and construction,
and sealant locations.
Samples:
1.
Provide samples for color selection.
2.
Provide samples of selected prefinished coating color(s) on not less than 8-inch by 8-inch
metal panels, for approval.
3.
Provide samples of sheet metal section shapes for Architect’s approval, if requested.
Quality Assurance Submittals:
1.
1.04
Certificates: Product certificates signed by manufacturer certifying materials meet specified
performance characteristics and criteria, and physical requirements.
QUALITY ASSURANCE
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SECTION 07 42 12
A.
Installer Qualifications: Installation shall be done by an authorized agent of manufacturer,
experienced in installation of metal panel systems.
B.
Wind Load Design Criteria: Panel system shall meet applicable governing code requirements for
wind loading for geographical area in which installation is occurring.
1.05
A.
B.
C.
1.06
A.
1.07
A.
DELIVERY, STORAGE, AND HANDLING
Packing and Delivery:
1.
Do not deliver materials before installation is scheduled.
2.
Deliver materials in such a fashion as to not cause damage to finish of components which
make up system.
3.
Remove materials which are damaged or marred from site.
Storage and Protection:
1.
If storage of materials is required on-site, store materials in a manner to provide protection
against weather and physical damage.
2.
Handle materials at all times in such a manner as to protect finish. Materials which are
scratched or marred in any way that would permit corrosion of base metal shall not be
installed, or if installed, shall be removed and new installed at no expense to Owner.
Handling of Materials:
1.
Handle sheet metal carefully and treat with respect for its quality and importance of good
appearance.
2.
Blemishes and damage due to careless handling will be cause for rejection.
PROJECT CONDITIONS
Field Measurements:
1.
Verify actual supporting and adjoining construction by field measurements before fabrication,
and indicate recorded measurements on final Shop Drawings.
2.
Coordinate construction to ensure that panels fit properly to supporting and adjoining
construction and coordinate schedule with construction progress to avoid delaying the work.
3.
Where field measurements cannot be made without delaying the work, guarantee dimensions
and proceed with fabrication of panels corresponding to established dimensions.
WARRANTY
General:
1.
Refer to Documents 00 72 00, General Conditions, and 00 73 00, Supplementary Conditions,
for project warranty provisions.
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SECTION 07 42 12
2.
Submit, for Owner’s acceptance, manufacturer=s standard warranty documents executed by
authorized company official.
3.
Manufacturer’s warranty is in addition to, and not a limitation of, other rights Owner may have
under the Contract Documents.
B.
Contractor Warranty: Contractor shall warrant the materials to be free of faults and defects in
accordance with the General Conditions, except that the warranty shall be extended by paint
manufacturer’s standard multi-year warranty. Warranty shall be in writing and shall be signed by
manufacturer.
C.
Materials Manufacturers: Repair or replace defective materials for a period of 2 years.
D.
Panel System Manufacturer: Repair or replace fabricated products which fail due to faulty
workmanship for a period of 5 years.
E.
Panel System Installer: Repair or replace products or components which fail due to faulty
workmanship for a period of 2 years.
F.
Painted Finish: Coatings manufacturer and applicator to warrant paint for a period of 20 years
after date of Substantial Completion, that the factory applied finish applied by applicator will not:
1.
Chip, crack, or peel (lose adhesion), but does not include minute fracturing which may occur in
proper fabrication of building parts.
2.
Chalk in excess of ASTM D4214, Number 8 rating, determined by procedure outlined in ASTM
D4214 specification test.
3.
Change color more than 5 Delta-E Hunter units as determined by ASTM D2244. It is
acknowledged that fading or color changes may not be uniform if surfaces are not equally
exposed to sun and elements.
PART 2 - PRODUCTS
2.01
A.
2.02
A.
CONCEALED FASTENER PROFILED WALL PANELS
General: Provide factory-formed metal wall panels designed to be field assembled and
mechanically attached panels to supports using concealed fasteners in interlocking side laps.
Include accessories required for weathertight installation.
MANUFACTURERS
Basis-of-Design Product: Subject to compliance with requirements of the Contract Documents,
provide the following manufacturer’s product or Owner approved equal:
1.
2.03
A.
Firestone Metal Products, Delta Series Concealed Fastener Wall Panel System, No. CPP-16C
Panel Profile
PANEL MATERIALS
Prefinished Galvanized Steel Sheet Metal:
1.
Description:
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SECTION 07 42 12
a.
b.
c.
d.
e.
f.
2.04
A.
B.
Base Metal Material: 24 gauge (0.0217 inch) thick, G90 hot-dip zinc-coated (galvanized)
structural quality steel sheet metal in accordance with ASTM A653, primed.
Surface Texture: Smooth.
Exposed Surface Finish: High Performance Organic Finish
1)
Prepare, pretreat, and apply coating on metal surfaces in accordance with coating
and resin manufacturer’s written instructions.
2)
Fluoropolymer 2-Coat System: Manufacturer’s standard 2-coat thermo-cured system
consisting of specially formulated inhibitive primer and fluoropolymer color topcoat
containing not less than 70 percent polyvinylidene fluoride resin by weight; meeting
physical properties and coating performance requirements of AAMA 2605; factory
applied over pretreated base metal by coil-coating process in accordance with ASTM
A755.
Protective Film: Provide strippable film on top side of coated sheet metal to protect finish
during fabrication, shipping, and field handling. Strippable film will be removed just before
installation of sheet metal.
Exposed Surface Color: Architect will select from manufacturer’s standard colors.
Appearance of Exposed Finishes: Variations in appearance of abutting or adjacent
pieces are acceptable if they are within 1/2 of range of approved samples. Noticeable
variations in same piece are not acceptable. Variations in appearance of other
components are acceptable if they are within range of approved samples and are
assembled or installed to minimize contrast.
ACCESSORY MATERIALS
Flashing and Trim:
1.
Fabricate to meet recommendations in SMACNA “Architectural Sheet Metal Manual” that apply
to design, dimensions, metal, and other characteristics of item indicated.
2.
Same material and gauges as for panels.
3.
Form exposed sheet metal accessories that are without excessive oil canning, buckling, and
tool marks and that are true to line and levels indicated, with exposed edges folded back to
form hems.
4.
Seams: Fabricate non-moving seams in accessories with flat-lock seams. Tin edges to be
seamed, form seams, and solder.
5.
Sealed Joints: Form non-expansion but movable joints in metal to accommodate elastomeric
sealant in accordance with SMACNA standards.
Fasteners:
1.
As recommended by wall panel manufacturer.
2.
Fasteners shall be non-corrosive type, cadmium plated carbon steel or Series 300 stainless
steel with bonded neoprene washers.
3.
Provide self-tapping screws and other suitable fasteners designed to withstand design loads.
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C.
Panel Sealants:
1.
Hidden Sealant Type: Pressure sensitive, gray isobutylene compound sealant tape with
release-paper backing. Provide permanently elastic, non-sag, non-toxic, non-staining tape,
1/8 inch thick and 1 inch wide.
2.
Hidden Joint Sealant: ASTM C90; elastomeric polyurethane, polysulfide, or silicone sealant;
of type, grade, class, and use classifications required to seal joints in metal wall panels and
remain weathertight; and as recommended in writing by metal wall panel manufacturer.
3.
Non-Skinning Butyl Sealant: ASTM C734 non-hardening, non-drying, non-oxidizing butyl
rubber based sealant.
4.
Accessory Attachment Tape: Pressure sensitive, 1/8-inch thick and 1-inch wide VHB tape.
D.
Foam Closure Strips: Closed-cell, expanded, cellular, rubber or cross-linked, polyolefin-foam or
closed cell laminated polyethylene; minimum 1 inch thick, flexible closure strips; cut or pre-molded
to match metal wall panel profile. Provide closure strips where indicated or necessary to ensure
weathertight construction.
E.
Metal Closure Strips: Unless otherwise noted, shall be same material and gauge as panel.
F.
Self-Adhering, High Temperature Sheet Underlayment/Waterproofing:
1.
Acceptable Manufacturers: Subject to compliance with requirements of the Contract
Documents, acceptable manufacturers are as follows or Owner approved equal:
a.
b.
c.
d.
2.
Description: 30 to 40 mils thick, consisting of slip-resisting polyethylene film top surface
laminated to layer of butyl or SBS-modified asphalt adhesive, with release-paper backing; cold
applied. Self-adhering so membrane will bond firmly to substrate surface and will seal to itself
at lapped joints without need for use of heat or special adhesives. Self-sealing so membrane
will seal water tight around fasteners used to secure sheet metal roofing system installed over
membrane. Provide primer when recommended by underlayment manufacturer.
a.
b.
2.05
A.
Carlisle Coatings & Waterproofing, Inc., Division of Carlisle Companies, Inc.,
CCW WIP 300HT
GAF Materials Corporation, “Metal-Mate”, Softening Point 260-265
Polyguard Products, Inc., “Deck Guard”
W. R. Grace & Co.-Conn, Construction Products Division, “Vycor Ultra”
Thermal Stability: Stable after testing at 240 degrees F (116 degrees C); ASTM D1970.
Low Temperature Flexibility: Passes after testing at minus 20 degrees F (29 degrees C);
ASTM D1970.
FABRICATION
General:
1.
Panels shall have an interlocking side lap feature which conceals fasteners requiring no panel
clips. Load span tables must include evaluation of side joint interaction.
2.
Panels shall have factory applied sealant concealed within interlocking joint.
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3.
B.
Panels shall have common interlocking side joints to allow for multiple panel profile
combinations.
4. Exposed panel fasteners are unacceptable.
Tolerances:
1.
Form panels in longest practical lengths, true to shape, accurate in size, square, and free from
distribution or manufacturing defects.
2.
Bend lines, breaks, and angles shall be sharp and true, and surfaces shall be free from warp
or buckle.
C.
Material surfaces shall be free of scratches or marks caused during fabrication.
D.
Panel shearing length to be plus or minus 1/16 inch.
E.
Ensure that entire project is manufactured from single color coil paint run to ensure color uniformity.
F.
Provide factory applied strippable plastic film for protection during fabrication and installation.
2.06
A.
B.
FINISHES
General Requirements:
1.
In accordance with NAAMM “Metal Finishes Manual for Architectural and Metal Products” for
recommendations for applying and designating finishes.
2.
Protect mechanical and painted finishes on exposed surfaces from damage by applying a
strippable, temporary protective covering before shipping.
Appearance of Finished Work: Variations in appearance of abutting or adjacent pieces are
acceptable if they are within 1/2 of range of approved samples. Noticeable variations in same
piece are not acceptable. Variations in appearance of other components are acceptable if they are
within range of approved samples and are assembled or installed to minimize contrast.
PART 3 - EXECUTION
3.01
A.
3.02
A.
EXAMINATION
Verification of Conditions:
1.
Examine construction to which metal panel system is being applied.
2.
Do not proceed with installation until deficiencies which would prevent a successful installation
have been corrected.
PREPARATION
General:
1.
Coordinate setting drawings, diagrams, templates, instructions, and directions for installation.
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3.03
2.
Panel substructure shall be level and plumb.
3.
Coordinate delivery of such items to site.
INSTALLATION
A.
General: Install metal wall panels in accordance with manufacturer’s written instructions in
orientation, sizes, and locations indicated on Drawings.
B.
Erect panel level and plumb, in proper alignment in relation to substructure framing and established
lines; follow SMACNA Architectural Sheet Metal Manual and standard practices.
C.
Panels shall be erected in accordance with approved Shop Drawings.
D.
Panel anchorage shall be structurally sound and in accordance with engineer’s recommendations.
E.
Where aluminum materials come in contact with dissimilar materials, an isolation shim or tape shall
be installed at fastening locations.
F.
Install sheet waterproofing membrane in accordance with manufacturer’s instructions.
G.
Completed system shall be free from over bending, deforming, stretching, distortion, waves, and
buckles.
H.
Install gaskets, joint fillers, and sealants where indicated and where required for weathertight
performance of metal wall panel assemblies. Provide types of gaskets, fillers, and sealants
indicated or if not indicated, types as recommended by metal wall panel manufacturer.
3.04
1.
Seal side joints where recommended by metal wall panel manufacturer.
2.
Prepare joints and apply sealants in accordance with manufacturer’s requirements.
CLEANING AND PROTECTING
A.
Clean exposed surfaces of panels that are not protected by temporary covering to remove
fingerprints and soil during construction period.
B.
Clean exposed surfaces with water and a mild soap or detergent not harmful to finishes.
Thoroughly rinse surfaces and dry.
C.
Protect panels from damage during construction. Use temporary protective coverings where
needed as approved by panel manufacturer.
D.
Clean and touch up minor abrasions in finish with air dried coating that matches color and gloss,
and is compatible with factory applied finish coating.
E.
Remove panels damaged beyond repair and replace with new panels to match adjacent
undamaged panels.
F.
Remove protective film immediately after installation.
END OF SECTION
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