SECTION 07 42 13 – Preformed
(Manufactured) Flat Wall Panel Systems
PART 1 – GENERAL
1.01 SECTION INCLUDES
The work includes, but is not necessarily
limited to, furnishing and installation of all preformed metal walls, and
accessories as indicated on the drawings and specified herein.
1.02 RELATED SECTIONS
A. Structural Steel Supports: Section 05100
B. Structural Metal Roof and Floor Decking:
Section 05300
C. Miscellaneous Fabricated Steel: Section
05500
D. Structural Lumber Supports: Section
06100
E. Structural Glue Laminated Lumber
Supports: Section 06181
F. Thermal Insulation: Section 07200
G. Fireproofing: Section 07250
H. Sheet Metal Flashings and Trim Section
07600
I. Joint Sealants not specified herein:
Section 07900
J. Finish Painting not specified herein:
Section 09900
1.03 PERFORMANCE REQUIREMENTS
Panels that do not meet the following ASTM
standards are not acceptable.
Performance testing must be proprietary to manufacture’s specific panel
system.
A. Testing and Certification
1. Air Infiltration: Panel system to meet
the following standard when tested in accordance with ASTM E 283-04
a. With recommended joint sealant: 0.00 CFM
(No Leakage) at 6.24 psf.
2. Water Penetration: Panel system to meet
the following standard when tested in accordance with ASTM E 331-00
a. With recommended joint sealant: 0.00
CFM. (No Leakage) at15.0 psf.
3. Structural Performance: Individual panel
meet the following standard when tested in accordance with ASTM E 72
a. Using recommended fastener configuration
for maximum wind load (see manufacture’s recommended fastener chart):
average ultimate load (held for 1 minute) must exceed 115 lbs.
b. Manufacture must provide a transverse
load table utilizing data attained from ASTM E 72 structural testing.
4. Fastener Pull Through: Panel steel and
fasteners to meet the following standard when tested in accordance with
ASTM E 1761a
a. Using the recommended fastener (#8
modified truss head / Phillips wafer head screw) average pull through or
screw failure must exceed 875lbs.
5. Metposite
tm Webbcore panels meet ASTM E-84
Flame spread 0 or less, Smoke development <5
6. Metposite
tm Iso panels ASTM E84 Flame spread
25 or less, Smoke development <250
6. Zincalume® substrates ASTM A
792 and A250
7. Aluminum substrates meet ASTM B-209
8. Exterior finish includes a 0.2 mil thick
corrosion-resistant primer and a 0.8 mil thick finish coat of
polyvinylidine fluoride (PVF2), full 70% Kynar 500®/Hylar
5000® for a total 1.0 mil dry film thickness with a specular
gloss of 10-15% when tested in accordance with ASTM D-523-89 at 60o.
9. Protective coating conforms to ASTM
A792, AZ50 (Zincalume®).
B. Tolerances
1. Panel size and bow shall be a maximum
0.5 percent of panel dimension in width and length
1.04 SUBMITTALS
A. Product Data
1. Submit Manufacturer’s technical product
data, installation instructions and recommendations for each type of wall
panel required. Include data substantiating that materials comply with
requirements.
B. Samples
1. Prior to ordering products, submit
manufacturer’s standard color samples for architect’s/engineer’s
selection.
2. Prior to starting work, submit
(quantity) 12 inch by 12 inch long panel samples showing shape and a
representative color chip for architect’s/engineer’s acceptance.
C. Shop Drawings
1. Show panel layout, trim installation,
and panel attachment.
1.05 QUALITY ASSURANCE
A. Installer’s Qualifications
1. Installation of panels and accessories
by installers with a minimum of 5 years experience.
2. Applicator must be approved by panel
manufacturer in writing.
B. Manufacture’s Qualifications
1. Manufacturer shall have a minimum of 5
years experience supplying flat metal wall panels to the region where the
work is to be done.
2. Panel manufacturers without full
supporting literature, flashings & details guides, guide specifications
and Technical support shall not be considered equal to the specified
product.
C. Regulatory Agency Requirements
1. Comply with UBC and local building code
requirements if more restrictive than those specified herein
1.06. PRODUCT DELIVERY, STORAGE AND HANDLING
A. Keep panels dry.
B. Protect against damage and discoloration
C. Handle panels with non-marring slings.
D. Do not bend panels.
E, Store panels above ground, with one end
elevated for drainage.
F. Protect panels against standing water
and condensation between adjacent surfaces.
G. If panels become wet, immediately
separate sheets, wipe dry with clean cloth, and allow to air dry.
H. Remove all strippable film coating
immediately after installation and do not allow it to remain on the panels
in extreme cold, heat or in direct sunlight. (see manufacture’s
installation Instructions)
1.07 WARRANTY
A. Manufacture’s Warranty
1. Metposite LLC warrants its Metposite
tm Std, Metflush
tm and Metflush II
tm (Iso, Transfluted Pro
tm or Webbcore
tm E84 backed) panels to be free of
manufactures faults and defects for a period of 10 years, including
materials manufacturer’s 20-year paint warranty on painted products. (see
sample warranty in manufacture’s literature)
B. Contractor’s Warranty
1. Warrant panels, flashings, sealants,
fasteners and accessories against defective materials and/or workmanship,
to remain watertight and weatherproof with normal usage for ( )
years following project substantial completion date.
1.08 PROJECT CONDITIONS
A. Examine the condition and substrates in
which metal panel work is to be installed. Substrate shall be installed
level, flat and true to avoid panel stress.
B. Field measurements shall be taken prior
to fabrication of panels.
C. Proceed with panel installation only
after satisfactory conditions are met.
PART 2 – PRODUCTS
2.01 ACCEPTABLE MANUFACTURER
A. Metposite LLC 3761 2nd.
Street Hubbard, OR 97032 phone 503.981.5900 fax 503.981.5900
e-mail
sales@metposite.com
1. Panel: Metposite
tm Std. flat-faced panel with fully
bonded, weather resistant (Iso) or repellent (Transfluted Pro
tm & Webbcore
tm E84) integral stiffener. Wet joint panel system.
2. Panel: Met-Flush
tm and Metflush II
tm flat-faced panel with fully bonded, water resistant, weather
resistant (Iso) or repellent (Transfluted Pro & Webbcore) integral
stiffener. With female/male leg receiver to form positive adjoining panel
system.
3. Typical vented Metposite
tm Std, Met-Flush
tm or Metflush II
tm panels to be perforated with
.125” holes spaced inline or staggered .25” on center apart. The pattern
and percentage of surface area per design requirements. (Typical: Full
face or 3” wide strips full length of panel.)
2.02 MATERIALS
A. Panels
1. Base Metal:
a. Material
1.
Steel conforming to ASTM A792 Zincalume®, minimum yield 40,000
psi., thickness [choose one] 24 gauge (standard), 22, 20, gauge
(non-standard).
2.
Panels are also available [choose one] .032, .040 (limited colors
may apply), 050 aluminum with a Kynar 500® or anodized finish.
b. Protective Coating:
1. Conform to ASTM A792, AZ50 (Zincalume®).
c. Fully bonded stiffener material
1. Iso
2. Transfluted Pro
tm
3. Metposite Webbcore tm E-84
2. Configuration.
General: Provide factory formed metal wall
panels with integral stiffener designed to be mechanically attached to
supports using concealed fasteners. Include accessories required for
a concealed fastener water tight or rain screen application.
a. Flat faced wall panels: Formed with
vertical & horizontal panel edges and flat pan between panel edges with
flush joints between panels.
b. Water resistant closed cell foam
stiffener (Iso) fully bonded to concealed side of panel
c. Water repellent stiffener (Transfluted
Pro or Webbcore E-84) fully bonded to concealed side of panel
d. Bottom and top edges concealed fastener
through panel flange.
e. Side edges butt panel to panel in
concealed, continuous vertical drainage channel with joint sealer.
f. Panel coverage: refer to drawings for
panel sizes
g. Panel depth ½ “, 1”, 1 ½ “, 2” standard
sizes [choose one]
3. Exterior Finish: (choose one)
a. Zincalume® Plus or G-90
Galvanized
b. Exterior finish includes a 0.2 mil thick
corrosion-resistant primer and a 0.8 mil thick finish coat of
polyvinylidine fluoride (PVF2), full 70% Kynar 500®/Hylar
5000® for a total 1.0 mil dry film thickness with a specular
gloss of 10-15% when tested in accordance with ASTM D-523-89 at 60o.
supplied over Zincalume base metal alternate finishes.
c. DuraTechTM mx metallic
finish, consisting of a baked-on acrylic primer (0.2 mil.) and a baked-on
polyvinylidine fluoride finish coat (0.8 mil.) totaling a nominal 1.0 mil.
dry film thickness
4. Interior Finish:
a. Primer coat material:
Corrosion-resistant primer; primer coat dry film thickness: 0.15 mils;
finish coat material: polyester paint, finish coat dry film thickness:
0.35 mils.
b. Total interior dry film thickness: 0.50
mils.
c. Color: Off-White.
5. Color: (choose one)
a. Manufacturer’s standard selection of not
less than 20 colors.
b. Custom color as selected by architect to
be _____________.
B. Fabrication
1. Panels shall be factory formed.
Field formed or general shop formed panels are not acceptable. Provide
profiles and sizes indicated in drawings.
2. Form panel lines, breaks, and angles
sharp and true, with surfaces free from warp and buckle.
3. Fabricate panels to include integral
fully bonded stiffeners required to maintain flat face surface fabrication
tolerances and deflection limits.
4. Provide panels with (choose one)
Smooth face, Embossed, Quilted face finish.
C. Flashing
1. Material and Finish: Match panels in
base metal, color and gauge. Do not use lead or copper.
D. Sealants
1. Joint sealants and fillers per section
07900
PART 3 – EXECUTION
3.01 EXAMINATION
A. Existing Conditions
1. Inspect installed work of other trades
and verify that such work is complete to a point where this work may
continue.
2. Verify that installation may be made in
accordance with approved shop drawings and manufacturer’s instructions.
3.02 PREPARATION
A. Field Measurements
1. Verify prior to fabrication.
2. If field measurements differ from
drawing dimensions, notify architect/engineer prior to fabrication.
B. Protection
1. Treat, or isolate with protective
material, and contacting surfaces of dissimilar materials to prevent
electrolytic corrosion.
2. Protect work of other trades against
damage and discoloration.
C. Surface Preparation
1. Clean and dry surfaces prior to
applying sealant.
2. Install flashings and other sheet metal
to comply with requirements of section 07600.
3.03 INSTALLATION
A. Panels
1. Follow panel manufacturer’s directions.
2. Do not stretch or compress panel
side-laps.
3. Secure panels without warp or
deflection.
B. Fasteners
1. Per manufacturer recommendation. (See
transverse load requirements in performance requirements of this section.)
C. Allowable Erection Tolerances
1. Maximum alignment variation: ¼ inch in
40 feet.
D. Panel Joints
1. Install joint fillers and sealants where
indicated and where required for a water tight metal wall panel
assembly..
E. Flashing
1. Follow manufacturer’s directions and
architect approved shop drawings.
2. Install flashings to allow for thermal
movement.
3. Remove strippable protective film, if
used, immediately preceding flashing installation.
D. Cutting and Fitting
1. Neat, square and true. Torch cutting is
prohibited where cut is exposed to final view.
2. Openings 6 inches and larger in any
direction: Fabricate and reinforce to maintain original load
capacity.
3.04 CLEAN UP AND CLOSE OUT
A. Panel Damage and Finish Scratches
1. Do not apply touch-up paint to damaged
paint areas that involve minor scratches.
2. Panels or flashings that have severe
paint and/or substrate damage shall be replaced as directed by the
architect’s or owner’s representative.
B. Cleaning and Repairing
1. At completion of each day’s work and at
work completion, wipe clean removing dirt and dust. Do not allow
fasteners, cuttings, filings or scraps to accumulate.
2. Remove debris from project site upon
work completion.
[End of Section]
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