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Architectural Composite Wall Panels & Stone Cladding Specifications

SPEC NOTE: This combined metric imperial specification is basic and must be adapted to suit the requirements of individual projects.

It is written in accordance with Construction Specifications Institute (CSI) 3-Part Section Format, and the CSI PageFormat.

10 Pages (29 kb)

* for version in word .doc format please click here.

* Download CSC 3-Part Spec Document
	SPEC NOTE: This combined metric imperial specification is basic and must be adapted to suit the requirements of individual projects. It is written in accordance with Construction Specifications Canada (CSC) 3-Part Section Format, and the CSC PageFormat. 3 Pages (24kb)

* for version in word .doc format please click here.

Wall Cladding Specifications

WALL CLADDING
SECTION 07420 : EXTERIOR WALL CLADDING
COMPOSITE WALL CLADDING

SPEC NOTE : This combined metric imperial specification is basic and must be adapted to suit the requirements of individual projects. It is written in accordance with Construction Specifications Canada (CSC) 3-Part Section Format, and the CSC Page Format. Square brackets [ ] indicate choice, alternative data required or need for the specifier to made a decision.

1. GENERAL

1.1 REFERENCE WORK

.1 Building framing members : Section [05500]
.2 Rough carpentry : Section [06100]
.3 Caulking and Sealants : Section [07900]

1.2 Design Criteria

.1 Design panel wall to provide for thermal movement of component materials caused by ambient temperature range of [___] °C without causing buckling, failure of joint seals, undue stress on fasteners or other detrimental effects.
.2 Include expansion joints to accommodate movement in wall system and between wall system and building structure, caused by structural movements, without permanent distortion, damage to infills, racking of joints, breakage of seals, or water penetration.
.3 Design members to withstand dead load and wind loads calculated in accordance with NBC and applicable local regulation, to maximum allowable deflection of 1/180th of span.
.4 Provide for positive drainage of condensation occurring within wall construction and water entering at joints, to exterior face of wall in accordance with NRC “Rain Screen Principles”.
.5 Design wall system to accommodate specified erection tolerances of structure.
.6 Design wall system to allow for movement of air between exterior and interior side of cladding.

1.3 SAMPLES

.1 Submit samples in accordance with Section [01340].
.2 Submit duplicate [_____] x [_____] mm samples of wall system, representative of materials, finishes and colors.

1.4 SHOP DRAWINGS

.1 Submit shop drawings in accordance with Section [01340]
.2 Indicate dimensions, wall openings, window and door head, jamb, and sill detail, corner detail, materials and finish, fastening details, compliance with design criteria and requirements of related work.

1.5 QUALIFICATION OF INSTALLER

.1 Application of cladding system to be by installers approved by manufacturer of system specified, in strict accordance with manufacturer’s written “Installation Guide”.

1.6 MOCK-UP

.1 Provide a mock-up on building consisting of complete cladding system, including but not limited to metal furring, panels, securement devices, sealants and molding for approval. Cladding finish and moldings to be of finish and co lour as designated by the [Consultant].
.2 Location of mock-up to be as directed by [Consultant]. Size to be four panels minimum in a 2 over 2 configuration.
.3 Modify mock-up as necessary for [Consultant] approval. Mock-up [may] [may not] remain in place as part of completed work. Mock-up to represent standard for completed work. (mock-up is for special or large project)

1.7 MAINTENANCE DATA

.1 Provide “Panel Replacement Guide” instructions for incorporation into operation and maintenance manual specified in Section [01730].

1.8 EXTENDED WARRANTY

.1 Provide 10 year extended warranty, from date of certificate of substantial performance of work, against manufacturing defects which result in cracking, crumbling, chipping, or abnormal color fading under usual environmental conditions.
PRODUCTS

SPEC NOTE : Specify panel size(s), texture, finish and co lour from manufacturer’s literature and co lour samples. Standard thickness is 3mm (1/8”); specify 6 mm (1/4”) thick where greater impact resistance is desired.

2.1 MATERIALS

.1 Wall cladding system : CAREA Wall Cladding System of integrally colored, thermoset polyester-glass fiber composite panels. ULC listed, [300 mm x 600 mm (11 13/16 x 23 5/8”)] panel size, [3 mm (1/8”)] [6 mm (1/4”)] thickness; 32 mm (1 1/4”) overall depth; [stone face] [polished smooth] texture; [Riverstone] finish, [chamois] co lour, as manufactured by CAREA Inc. as per physical properties as stated in manufacturer’s literature.
.2 [Metal hat sections furring] [Metal z-bars] and retaining molding : galvanized steel, minimum 20 gauge, of dimensions indicated and in maximum lengths.
.3 Pre-finished molding : bend formed [galvanized steel] [aluminum] with baked enamel finish, to profile required, in maximum lengths.
.4 Fasteners : [stainless steel], purpose made, self-tapping, minimum 19 mm (3/4”) length, with heads minimum 12 mm (7/16”) diameter.
.5 Sealants : In accordance with Section [07900], of [co lour to match panel] [_____] co lour as selected by [Consultant].
.6 Isolation coating : [alkali resistant] [bituminous paint] [epoxy resin solution].
.7 Accessories : panel manufacturer’s standard accessories as required by job conditions.

2.2 FABRICATION

.1 Panels to be molded under high pressure and high temperature with interlocking joints having rain screen design.
.2 Coordinate and verify at job site dimensions affecting work of this Section. Ensure suitability of adjacent building components in relation to work of this section.
.3 Accurately fit joints and intersecting members to true planes adequately and securely fastened and made completely watertight. Component fastening devices shall be of adequate strength and concealed, except as specified otherwise.
.4 Fabricate units to profile and sizes indicated complete with rabbets, interlocks, flashings, cappings, trim, filler sections as required to interface with work of other sections.
.5 Fabricate all devices required for erection and adequate anchorage and attachment required to be built into or attached to substrate and framing members for proper support.
.6 Accurately cut and form flashing true and straight without waves or buckles. Make adequate provision for thermal movement and make joints watertight.
.7 Cut and flash at openings where shown on Drawings.
.8 Reinforce work of this section to meet specified requirements and prevent undue deflection. Provide concealed corrosion resistant fastening and continuous formed retaining molding.
EXECUTION

3.1 INSPECTION

.1 Before installation, examine horizontal and vertical alignment of substrate and notify [Consultant] in writing if substrate does not comply with panel manufacturer’s requirements.
.2 Verify compatibility of different metallic surfaces in contact with each other to protect against electro-chemical corrosion.

3.2 PREPARATION

.1 Protect metal surfaces in contact with concrete, masonry mortar, plaster or other cementitious surface with isolation coating.

3.3 INSTALLATION

.1 Installation to be by manufacturer’s trained and approved installers and in strict accordance with manufacturer’s written recommendations and shop drawings.
.2 Provide supplemental steel support members for work of this section to suit design requirements.
.3 Provide work to resist wind uplift at soffits.
.4 Install metal [furring] [z-bars]horizontally to substrate at centers corresponding to horizontal joint spacing of panels. Secure at 406 mm (16”) o.c. and to suit loading requirements.
.5 Ensure all flashing and trim is installed before or immediately after erecting panels, and sealed to stop direct weather penetration.
.6 Mount panels horizontally working from bottom to top, and each row from left to right in accordance with tongue and groove interlocking system.
.7 Employ [offset joint (running bond) technique] [aligned joint technique] panel design. Obtain panel symmetry whenever possible relative to openings e.g. [doors and windows] using [[plant fabricated] [site fabricated] adhesive welded corners]] [enameled metal molding].

3.4 CONTROL/EXPANSION JOINTS

.1 Construct [control] [expansion] joints as indicated.
.2 Use cover sheets, of brake formed profile, of same material and finish as adjacent material.
.3 Use mechanical fasteners to secure sheet materials.
.4 Assemble and secure wall system to substrate on structural frame so stresses on sealants are within manufacturer’s recommended limits.

3.5 TOLERANCES

.1 Maintain following installation tolerances :
1° Maximum variation from plane or location shown on approved shop drawings :10mm per 10m in length (3/8” per 30’-0”)
and up to 20 mm per 100m in length (3/4” per 300’-0”).
2° Maximum offset from true alignment between two adjacent members abutting end to end, in line : 0.75 mm (1/32”).

3.6 CLEANING

.1 Wash down exposed exterior surface using solution of mild domestic detergent in warm water, applied with soft clean wiping cloths. [Wipe interior surfaces clean as part of final clean-up.]
.2 Remove excess sealant with recommended solvent.