	Products

DESCRIPTION

Kanalco Aluminum Rainscreen Cladding is an exterior “dry joint” cladding system which is designed as part of a rain penetration control assembly commonly referred to as a “rainscreen” wall. The Kanalco cladding acts as the first line of defense in controlling the impact of wind driven rain on exterior walls. The second line of defense consists of a cavity space and the air barrier system behind the cladding.

With the Kanalco cladding system, the air pressure load is not resisted by the cladding. Instead the air induced pressure is transmitted through the cladding by way of vented openings in the metal panels. The panel design allows rapid equalization of the cavity pressure with the local external pressure so that the entire wind load is transferred to the insulated air/vapor barrier while preventing wind driven rain from entering the cavity space.

A rainscreen wall differs from both a face-sealed wall (caulked joints) and a conventional drained cavity wall in several important respects as noted in the comparison chart above.

The important aspect in the above comparison is that in the Kanalco rainscreen approach, the integrity of the structural elements of the exterior wall are generally not affected (corroded) by accidental rainwater penetration through the exterior face of the cladding. This is assuming the second line of defense (cavity space and air barrier) are properly designed and implemented. The result is a more durable and long lasting building requiring less maintenance.

Basic Use:

	Exterior cladding (rainscreen system)
	Industrial, commercial and institutional
	New construction or renovation

Limitations:

For non-load bearing (non-structural) use only.

Composition and
Materials

Kanalco Rainscreen Cladding panels are fabricated with welded corners using solid 3 mm (.125”) aluminum alloy 5005-H34 anodizing quality or 3003-H14 paint quality tensioned levelled sheet. Other thicknesses or alloys are available. Materials, coming from the mill in sheet form, are finished to customer specifications.

Flat metal is brake formed; curved panels are either brake or roll formed, depending on radius and direction of curve.

Cladding incorporates effective venting area, vent locations, venting geometry, and stiffness to satisfy required design loads

Finishes:

The following aluminum finishes are offered as standard by Kanalco:

Anodized finishes: Architectural Class 1, 20 um (.0007”) or Class 2, 10 um (.0004) in clear or standard colors.

Paint finishes: PPG Duranar fluorocarbon coatings containing Kynar 500* resin in a wide range of architectural colors.

Advantages:

The Kanalco Aluminum Rainscreen Cladding provides the following advantages:

Rain penetration control: Controls the four forces which act to move water inward of the wall i.e. Kinetic energy, capillary suction, gravity, and air pressure.

Prevents direct entry of water: Overlap panel design and panel components consist of drips, capillary breaks, caps, and sills to direct most water away from building surfaces. Flashing and dam protection are also included within the system to direct any moisture that may have penetrated the cladding, back to the outside via joint reveals.

Rapid venting of cavity: Panel design relieves cladding of normal wind loads, minimizes risk of condensation within wall, and permits rapid drying of cladding material.

Convenient panel removal: Non-progressive installation permits individual panel removal or replacement. Allows access to wall behind at any specific point for envelope maintenance or inspection of window frames, air seals, insulation, air barrier and similar items.

Attractive properties: As a building material, aluminum excels in the areas of formability, light weight, easy maintenance, attractive appearance, finish integrity, and cost.

Sophisticated design: Metal reinforced panels allow for pressure equalization within wall, thermal and structural movement, and positive and negative wind load conditions.

Dry joint, unique fastening system: Sharp and true joints mate at horizontal and vertical reveals without the use of sealant. Concealed securement permits rapid installation and positive panel alignment without unwanted vibration (wind rattle).

Sizes:

Width - Coil or sheet is available in up to 1524 mm (60”) width and may be slit to smaller widths.

Length - As desired, depending on material availability.

Thickness - 3 mm (.125”) is standard. Other thicknesses available.

Radiused Corners - 6 mm (1/4”) minimum

Shapes:

Brake or roll (roller die) forming can produce an infinite variety of shapes. Kanalco can advise on proposed design configurations upon request.

Applicable
Standards:

Kanalco aluminum fabrications conform to: CAN/CGSB-93.1M

Aluminum Association Designation System for Aluminum Finishes (clear or color anodized).

AAMA #605 for Duranar colored coatings “Voluntary Specification for High Performance Organic Coatings on Architectural Extrusions and Panels”.

TECHNICAL
DATA

Comprehensive data relating to the physical and mechanical properties of aluminum can be found in AAMA technical literature available upon request from the Architectural Aluminum Manufacturers Association, Washington, D.C.

INSTALLATION

Methods: Kanalco Ltd. are a custom manufacturer specializing in the metal fabrications field. Installation of Kanalco aluminum products is normally carried out by the appropriate trades and experienced installers according to specifications and approved shop drawings.

Precautions:

In rainscreen designed walls, optimum performance is achieved by several elements of the wall working in unison, not with the cladding alone. Ensure that the three main components of the wall system (air barrier, cavity, space and rain screen cladding) contain properly designed features in order for the wall systems to control water penetration.

Building Codes:

Kanalco Aluminum Rainscreen Cladding in a properly designed rainscreen wall meets the intent of the 1995 NBCC (Separation of Environments, parts 5.6.1.1 and 5.5.2.1).

AVAILABILITY
& COSTS

Kanalco fabricated metal products can be shipped worldwide. Current cost data is available upon request.

WARRANTY

Normal 1 year construction warranty.

MAINTENANCE

To keep aluminum architectural components attractive, a definite maintenance program must be followed. The frequency of cleaning will depend on:
- atmospheric environment and severity of pollution.
- effect of weathering on the aluminum finish and ability of the finish to shed dirt and grime.
- cost involved.
- owner’s interest in retaining the original appearance.

TECHNICAL
SERVICES

Kanalco Ltd. can provide consultation from preliminary design through to product application, including the following:

• Technical advice for both new work and retrofit applications.
• Finish samples. • Specification assistance
• Shop drawings.
• Recommending contractor sources.
• Site advice and recommendations.

RELATED REFERENCES

NRC/IRC (National Research Council/ Institute for Research in Construction) publication “Exterior walls: Understand-ing the problem” by G.O. Handegord, K.N. Burn, R.L. Quirouette et al (rain screen principle), 1983.

CSC (Construction Specifications Canada) Tek Aid Digest, 07195 Air Barriers, March 1990.

NRC/IRC publication “Building En-velope Performance and Durability” (undated).

AAMA technical literature available from the Architectural Aluminum Manufac-turers Association, Washington, D.C.

Duranar technical literature and color chart data available from PPG Canada Inc., Mississauga, Ontario. For other areas, contact PPG International Sales, Pittsburg, P.A.

Additional Kanalco Ltd. technical literature:
- REYNOBOND® Composite Panels
- Stainless Steel Wall Panels - Aluminum Wall Panels
- Metal Column Covers
- Specialty Sheet Metal Fabrication
- Insulated Panels
- Formed Metal Profiles

SPECIFICATION

SPEC NOTE: This specification is basic and must be adapted to suit the requirements of individual projects. It is written in accordance with the CSC/CSI 3-Part Section Format. Square brackets [ ] indicate choice, alternatives, data required or need for the specifier to make a decision.

1) GENERAL

1.1 GENERAL REQUIREMENTS

.1 Comply with General Conditions of Contract, Supplementary Conditions and the [ ] requirements of Division 1

1.2 RELATED SECTIONS

.1 Structural steel supports, Section [05100]

.2 Cold formed metal framing, Section [05400]

.3 Air/Vapor barrier Section, [07270]

.4 Roof and Fascia Flashing, Section [07500]

.5 Sealing between metal and [concrete] [masonry], Section [07900]

.6 Metal doors and frames, Section [08100]

.7 Windows, Section [08500]

1.3 DESIGN REQUIREMENTS

Spec Note: For 1.3.1 insert expected temperature range for locality of building including range for locality of building including allowance for skin temperature heat gain in sunlight on coloured finish.

.1 Design cladding system to provide for thermal movement of component materials caused by ambient temperature range of [____ C ( F)] without causing buckling, wind rattle, undue stress on fasteners or other detrimental effects.

.2 Include expansion joints to accomodate movement in wall system and between wall system and building structure movements, without permanent distortion.

.3 Design members to withstand dead load and wind loads as calculated in accordance with NBC and applicable municipal regulations, to maximum allowable deflection of 1/180 of span.

.4 Provide for positive drainage of condensation occuring within wall construction and water entering at joints, to exterior face of wall in accordance with [NRC "Rain Screen Principals"].

.5 Design wall system to accomodate specified erection tolerences of structure.

.6 Maintain following installation tolerences:

.1 Maximum variation from plane or location shown on approved shop drawings: [10 mm/m xx(3/8" per 300'-0")] maximum.

.2 Maximum offset from true alignment between two adjacent members abutting end to end, in line: 0.75mm (1/32").

1.4 SHOP DRAWINGS

.1 Submit shop drawings in accordance with Section [01340].

.2 Indicate dimensions, wall openings, head, jamb, sill and mullion detail, materials and finish, anchor details, compliance with design criteria and requirements of related work.

1.5 SAMPLES

.1 Submit duplicate [_____] x [_____] mm (in.) samples of wall system, representative of materials, finishes and colours, in accordance with Section [01340] for approval.

1.6 QUALITY ASSURANCE

.1 Qualification of Installer

Installation of cladding system to be made by work forces approved by cladding manufacturer.

1.7 MOCK-UPS

.1 Provide mock-up on building consisting of complete cladding system, including but not limited to metal furring, panels, securement devices, and moldings for approval. Cladding finish and moldings to be of finish and colour as designated by the [Consultant] [Architect].

.2 Location of mock-up to be as directed by [Consultant] [Architect]. Size to be four panels mimimum in a 2 over 2 configuration.

.3 Modify mock-up as necessary for [Architect's] [Consultant's] approval. Mock-up [may] [may not] remain in place as part of completed work. Mock-up to represent standard for completed work.

1.8 STORAGE AND PROTECTION

.1 Handle, store and protect materials in accordance with cladding manufacturer's written instructions.

1.9 MAINTENANCE DATA

.1 Provide maintenance data for care and/or panel replacement for incorporation into operation and maintenance manual specified in Section [01730].

2) PRODUCTS

SPEC NOTE: If more than one type panel, thickness, size, or colour is required, specify type, etc. and ensure drawings or specifications indicate location of each type.

2.1 MATERIALS

.1 Metal building panels: Kanalco Aluminum Rainscreen cladding, performed, custom fabricated aluminum to CAN/CGSB 93.1M, 3mm (.125") thick, [5005-H34] [3003-H14] alloy, [915 mm x 915 mm (3'-0") panel size, as manufactured by Kanalco Ltd.

.2 Panel finish: architectural [Class 1, 20 um (.0007")] [Class 2, 10 um (.0004)] [clear] [_____color] anodized finish or PPG Duranar flurocarbon coating containing Kynar 500 resin finish [_____color] as selected.

.3 Trim and coping: 3 mm (.125") aluminum, to match cladding system.

.4 Sub-girts: 1.2 mm(18 ga.) zinc coated steel, to ASTM A525 with Grade A coating to ASTM Z275.

.5 Flashing: base, window head, metal closure, and similar flashings to be 1.5 mm (.062") thick aluminum, finish to match cladding system.

.6 Fasteners: self tapping s.s. screws to CSA B35.3-1962, purpose made.

.7 Sealents: in accordance with Section [07900], paragraph [_____], [_____type] [_____] color as selected by [Consultant] [Architect].

.8 Isolation coating: [alkali resistant] [bituminous paint] [epoxy resin solution].

.9 Support angles, brackets, etc.: hot dipped galvanizing with zinc coating [600 g/m2] [3.4 mils] to CSA G164-M1981 or ASTM A123-84.

2.2 FABRICATION

.1 Panels to factory fabricated, with [welded] [non-welded] corners, in accordance with specifications and approved shop drawings.

.2 Maximum allowable fabrication tolerences to be:

.1 Panel bow: 0.2% of panel dimensions up to 4.7 mm (0.187") maximum.

.2 Width or length: + 0.80 mm (0.032") up to 1220 mm (48") + 1.5 mm (0.064") from 1220 xxmm to 3360 mm (48" to 144").

.3 Squreness: Maximum 4.7 mm (0.187") difference between diagonal measurements.

.3 Form all panels to specified dimensions with tolerences to accomodate thermal expansion and contraction between panels and structural members. Accurately form radii of curved panels in plant.

.4 Factory fabricate accessory and trim components, ready for installation.

3) EXECUTION

3.1 INSPECTION

.1 Prior to installation examine alignment of substrate and notify [Consultant] [Architect] in writing if substrate does not comply with manufacturer's recommendations.

3.2 INSTALLATION

.1 Install cladding in accordance with manufacturer's written instructions and shop drawings. Allow for thermal movement.

.2 Maintain following installation tolerances:

.1 Maximum variation from plane or location shown on shop drawings: 10 mm/10 m ((3/8" in 30'-0") of length and up to 20 mm/100 m (3/4" in 300'-0") maximum.

.2 Maximum deviation for vertical member: 3 mm (1/8") in a 8.5 m (25'-0") run.

.3 Maximum deviation for horizontal member: 3 mm (1/8") in a 8.5 m (25'-0") run.

.4 Maximum offset from true alignment between two adjacent members abutting end to end, in line: 0.75 mm (1/32").

.3 Brake form metal flashing to profile required, in maximum lengths.

.4 Protect surface of metals in contact with concrete, mortar, plaster or other cementitious surface with isolation coating.

.5 Install head and sill flashings, edge trim, cap pieces and other metal profiles as applicable and/or detailed.

.6 Obtain panel symmetry whenever possible relative to openings in both vertical and horizontal place.

.7 Employ [control] [expansion] joints as indicated.

.8 Remove excess sealant using recommended solvent.

3.3 CLEANING

.1 As work progresses, remove any excess or foreign materials which would set up or become difficult to remove from finished surfaces.

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