SECTION 07 46 16

ALUMINUM CLADDING

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PART 1    GENERAL
1.1	SECTION INCLUDES
A.	Aluminum cladding, trim, and accessories.
1.2	RELATED SECTIONS
A.	Section 05 41 00 - Structural Metal Stud Framing. Metal framing for support of aluminum cladding.
B.	Section 05 50 50 - Metal Fastenings and Accessories. Knotwood Mounts.
C.	Section 06 10 00 - Rough Carpentry. Wood stud framing, furring, and sheathing for support of aluminum cladding.
1.3	REFERENCES
A.	American Society for Testing and Materials (ASTM):
1.	ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials
2.	ASTM E136 - Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750 degrees C 
3.	ASTM E2768 - Standard Test Method for Extended Duration Surface Burning Characteristics for Building Materials (30 min Tunnel Test). Results: Zero Flame Spread, Smoke Developed Index of 5. Meets criteria for Class A fire rating.
B.	American Architectural Manufacturers Association (AAMA):
1.	AAMA 2604 - Voluntary Specification, Performance requirements and Test Procedures for High Performing Organic Coatings on Aluminum Extrusions and Panels.
C.	Aluminum Association Standards (AA ASM):
1.	AA ASM 35 - Aluminum Sheet Metal Work in building construction.
2.	AA ADM 1 - Aluminum Design.
D.	Testing Application Standard (TAS):
1.	TAS 202-94 - Criteria for Testing Impact and Non-Impact Resistant Building Envelope Components Using Uniform Static Air Pressure.
2.	TAS 203-94 - Criteria for Testing Products Subject to Cyclic Wind Pressure Loading.
1.4	SUBMITTALS
A.	Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.	Product Data:
1.	Manufacturer's data sheets on each product to be used.
2.	Preparation instructions and recommendations.
3.	Storage and handling requirements and recommendations.
4.	Typical installation methods.
C.	Verification Samples: For each finish product specified, two samples, minimum size 2 x 3 inches (51 x 76 mm), representing the actual product, color, and gloss.
D.	Shop Drawings: Indicate dimensions of individual components and profiles, layout, joints, expansion joints, material descriptions, construction details, methods of anchorage, and interface with adjacent materials and finishes for each type of cladding and accessory.
E.	LEED Submittals: Knotwood aluminum components may contribute to relevant LEED v4.1 Material and Resources (MR) and Indoor Environmental Quality (IEQ) credits, particularly in relation to durability, recycled content, and low-emitting coatings.
F.	Manufacturer's Certificates: Certify products meet or exceed specified requirements. 
G.	Closeout Submittals: Manufacturer's maintenance instructions that include recommendations for periodic cleaning and maintenance of components.
1.5	QUALITY ASSURANCE
A.	Manufacturer Qualifications: Company specializing in manufacturing products specified in this section with a minimum of five years documented experience.
1.	Experience producing aluminum finishes of the types specified in AAMA 2604.
B.	Installer Qualifications: Company specializing in performing Work of this section with minimum three years documented experience with projects of similar scope and complexity.
C.	Source Limitations: Provide each type of product from a single manufacturing source to ensure uniformity.
D.	Mock-Up: Construct a mock-up with actual materials in sufficient time for Architect's review and to not delay construction progress. Locate mock-up as acceptable to Architect and provide temporary foundations and support.
1.	The intent of a mock-up is to demonstrate quality of workmanship and visual appearance.
2.	If the mock-up is not acceptable, rebuild the mock-up until satisfactory results are achieved.
3.	Retain mock-up during construction as a standard for comparison with completed work. 
4.	Do not alter or remove mock-up until work is completed or removal is authorized.
1.6	PRE-INSTALLATION CONFERENCE
A.	Convene a conference approximately two weeks before scheduled commencement of the Work. Attendees shall include Architect, Contractor and trades involved. Agenda shall include schedule, responsibilities, critical path items, and approvals.
1.7	DELIVERY, STORAGE, AND HANDLING
A.	Package and store products under cover in manufacturer's unopened packaging until ready for transport and installation. 
B.	Store and handle in strict compliance with manufacturer's written instructions and recommendations.
C.	Unload and store prefinished material off ground protected from weather, to prevent warping, twisting, bending, or abrasion. 
D.	Prevent contact with materials capable of causing discoloration or staining. 
E.	Protect from damage due to weather, excessive temperature, and construction operations.
1.8	PROJECT CONDITIONS
A.	Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. 
B.	Do not fabricate or install products under environmental conditions outside manufacturer's recommended limits.
C.	Weather limitations: Proceed with installation when existing and forecasted weather conditions permit assembly of metal fabrications to be performed in accordance with manufacturers' written instructions and warranty requirements. 
1.9	COORDINATION 
A.	Coordinate work with installation of adjacent components or materials to provide a leakproof, secure, and noncorrosive installation.
1.10	WARRANTY 
A.	Knotwood provides a 15-year Limited Warranty covering cracking, peeling, and color/gloss retention in accordance with AAMA 2604 performance requirements. Full warranty details are available at: https://knotwood.com/resources/warranty/
PART 2    PRODUCTS
2.1	MANUFACTURERS
A.	Acceptable Manufacturer: Knotwood, which is located at:<BR />5555 W Roosevelt St., Suite 400<BR />Phoenix, AZ 85043<BR />Tel: 602-313-1641<BR />Email: request info (sales@knotwood.com);Web: https://knotwood.com 
B.	Substitutions: Not permitted.
C.	Requests for substitutions will be considered in accordance with the provisions of Section 01 60 00.
2.2	PERFORMANCE AND DESIGN REQUIREMENTS
A.	Components: 
1.	Design and size components to withstand dead and live loads in accordance with applicable code. 
2.	Compatible with timber, steel, or aluminum substructures, when installed in accordance with Knotwood's recommendations. 
B.	Movement: Accommodate movement within system without damage to components or movement within system: 
1.	Movement between system and perimeter components when subject to seasonal temperature cycling.
a.	Thermal Expansion of Aluminum: Follow manufacturer installation and gapping guidelines.
2.	Dynamic loading and release of loads.
3.	Deflection of structural support framing.
C.	Drainage: Provide positive drainage to the exterior for moisture entering or condensation occurring within the soffit system.
D.	Fire Resistance:
1.	Knotwood aluminum components are inherently non-combustible. 
a.	Where required by code, cladding and soffit systems installed on commercial or multi-story projects must be assessed as part of a complete wall assembly in accordance with NFPA 285.
2.	Knotwood products have also been evaluated to ASTM E84 with a Class A rating.
3.	Additional North American compliance information is available at: https://knotwood.com/usa/
2.3	ALUMINUM CLADDING
A.	Basis of Design: Knotwood Aluminum Cladding as Manufactured by Knotwood USA. Extruded aluminum cladding, trim, and accessories. Cladding with Aluminate bonded film finish
1.	Manufactured Length is 18 ft 6 inches (5.639 m).
2.	Usable Length: 18 ft 4 inches (5.588 m).
3.	Orientation: Horizontal.
4.	Orientation: Vertical.
B.	Extruded Aluminum Cladding and Trim with Aluminate bonded film finish. 
1.	Stock Items:
a.	Cladding Board: 4 inches (102 mm).
b.	Cladding Board: 6 inches (152 mm).
c.	Cladding Board: 8 inches (203 mm).
d.	Cladding Board: 12 inches (300 mm).
C.	Cladding Accessories:
1.	Starter trim.
2.	Finishing trim.
3.	Internal corner trim.
4.	External corner trim.
5.	Joiner trim.
6.	Window trim.
7.	Slotted/drainage trim.
8.	Thermal expansion Clips.
2.4	FINISHES
A.	Pretreatment: Chrome Free five stage aluminum pretreatment system. Complies with AAMA 2604 Performance Standard and meets EPA, OSHA, State and Local environmental requirements and contains no chromates, cyanides, or other heavy metals. Waste treatment is usually a simple pH neutralization and disposal to the sanitary sewer. 
B.	Dulux Group Mannex base coat and Duratec Series electrostatic applied Architectural Powder Coatings are approved to AAMA 2604 Performance Standard. 
C.	Gloss Level: Standard Gloss is 30 percent, plus or minus 5 percent.
D.	Super Durable Powder Coatings: Aluminate Premium Wood Finishes use a polyurethane powder coat with ink-based wood grain patterns sublimated into the base powder effectively tattooing the powder coating. The combined effect creates all the aesthetic aspects of real wood while offering the same environmental advantages of powder coated finishes.
E.	Color: As determined by the Architect from Manufacturer's standard range.
F.	Color: Standard.
1.	Woodgrain: Atlantic Cedar.
2.	Woodgrain: Blackbutt.
3.	Woodgrain: Bush Cherry.
4.	Woodgrain: Chestnut.
5.	Woodgrain: Driftwood.
6.	Woodgrain: Eastern Mahogany.
7.	Woodgrain: Hickory.
8.	Woodgrain: Iroko.
9.	Woodgrain: Knotty Pine.
10.	Woodgrain: Kwila.
11.	Woodgrain: Light Oak.
12.	Woodgrain: Maple.
13.	Woodgrain: Royal Oak.
14.	Woodgrain: Savannah Oak.
15.	Woodgrain: Spotted Gum.
16.	Woodgrain: Tassie Oak.
17.	Woodgrain: Teak Brown.
18.	Woodgrain: Western Red Cedar.
19.	Woodgrain: White Ash.
20.	Solid: Vapor Grey.
21.	Solid: Obsidian.
22.	Solid: Carbon.
23.	Solid: Graphite.
24.	Solid: Hearthstone.
25.	Solid: Mist.
26.	Solid: Pavillion White.
27.	Solid: Dovetail
28.	Solid: Quicksand.
29.	Solid: Sterling.
30.	Solid: Twilight Grey.
G.	Color: Special order.
1.	Woodgrain: Australian Cedar.
2.	Woodgrain: Black Ash.
3.	Woodgrain: Black Walnut.
4.	Woodgrain: Charcoal Ash.
5.	Woodgrain: English Chestnut.
6.	Woodgrain: Iron Bark.
7.	Woodgrain: Koa.
8.	Woodgrain: Red Gum.
9.	Woodgrain: Tiger Wood.
10.	Woodgrain: Wenge.
H.	Color: Custom (Project Specific).
1.	Woodgrain: Kuro.
2.	Woodgrain: Aspen.
3.	Woodgrain: Nordic Oak.
4.	Woodgrain: French Walnut.
5.	Woodgrain: Black Wood.
6.	Woodgrain: Queensland Walnut.
7.	Woodgrain: Pacific Teak.
8.	Woodgrain: Red Wood.
9.	Woodgrain: Sycamore
10.	Woodgrain: Silver Wattle.
11.	Woodgrain: Norwegian Beech.
12.	Woodgrain: Spruce.
13.	Woodgrain: Hinoki.
14.	Woodgrain: Hamptons Cedar.
15.	Woodgrain: Grey Ash.
16.	Woodgrain: Black Cedar.
17.	Woodgrain: Black Wenge.
18.	Woodgrain: Merbau.
2.5	FABRICATION
A.	Prepare surfaces, pre-treat, and coat components in accordance with AAMA 2604 Quality Standards.
B.	Wrap and package coated components using methods suitable for transit and covered site storage without damage.
PART 3    EXECUTION
3.1	EXAMINATION
A.	Do not begin installation until the substrates have been properly constructed and prepared.
B.	If substrate preparation is the responsibility of another installer, notify Architect in writing of unsatisfactory preparation before proceeding.
3.2	PREPARATION
A.	Clean surfaces thoroughly prior to installation.
B.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
3.3	INSTALLATION
A.	Install in accordance with manufacturer's instructions, approved submittals, and in proper relationship with adjacent construction.
3.4	FIELD QUALITY CONTROL
A.	Field Inspection: Coordinate field inspection in accordance with appropriate sections in Division 01.
3.5	CLEANING AND PROTECTION
A.	Clean products in accordance with the manufacturers recommendations.
B.	Touch-up, repair or replace damaged products before Substantial Completion.

END OF SECTION