ARCHITECTS
Specifications
PART 1 - GENERAL:
1.1 Related Work By Others:
.1 Section Metal Soffitt / Fascia / Eaves
.2 Section Structural Framing
.3 Section Metal Deck
.4 Section Stucco
.5 Section Sealants
1.2 Performance Criteria:
.1 Provide a kinetic stone coated metal roofing system that will:
.1 withstand local wind load, snow load and uplift conditions.
.2 accommodate local temperature extremes.
.3 accommodate building movement.
.4 produce weather tight installations.
.5 conform to local building code requirements.
.2 Roof Slope:
Minimum pitch for standard installation methods to be 3/12 in temperate climates and 4/12 in climates subject to snow, ice and freezing temperatures. For slopes less than the above noted, please contact Allmet for special installation details.
1.3 Samples:
.1 Submit samples and color charts in accordance with Section 01300.
.2 Submit actual full size panel in color selected, for final approval prior to ordering material.
1.4 Shop Drawings:
.1 Submit shop drawings in accordance with Section 01300.
.2 Indicate panel arrangements, fasteners, standard flashing details noting special details.
PART 2 - PRODUCTS:
2.1 Materials:
.1 Aluminum-zinc alloy coated steel:
ASTM A792 bearing AZ 150 designation or equal, SS Grade 33 min.
2.2 System Components:
.1 Metal Roofing Panels: “Continental”, “Shadowline”, “Woodshake”, “Talavera SF”
.1 As manufactured by Allmet Roofing Products, Div. of Metals USA Building Products Canada Inc., Courtland, Ontario, Canada. P: (519) 688-2200 or 800-265-9357.
.2 Colors: As selected by Architect from manufacturer’s current color selection.
.3 Dimensions: 1200 mm (47 ¼”) wide X 402 mm (15 13/16”) exposure.
.2 Trims:
Of same material and coating as panels, selected from manufacturers standard details unless noted otherwise. All trim deviations must be approved by manufacturer before installation.2.3 Accessories:
.1 Underlay: Minimum no. 15 lb. approved asphalt felt.
.2 Batten System: 38 mm x 38 mm nominal (1 1/2 x 1 1/2) construction grade lumber or galvanized metal hat track of profiles and depths required to receive panel roofing
system at 402 mm centers.
.3 Touch Up: clear spray acrylic and colored mineral granules as supplied by manufacturer.
.4 Screws: 1 1/2” x # 10 long life coated meeting. ASTM B117 and ASTM B368 weathering tests as supplied by panel manufacturer.
.5 Counter Flashings: of type recommended by panel manufacturer.
.6 Caulking: a clear paintable rubber based thermoplastic sealant compatible with the roof coating as recommended by panel manufacturer.
2.4 Fabrication:
.1 Machine press panels from 0.018” (0.45 mm) material thickness aluminum-zinc alloy
coated sheet steel.
.2 Form flashing and related items from the same material and thickness as the panels.
2.5 Finishes:
.1 Factory finish metal roofing panels and related flashings using following system.
.1 Primer: corrosion inhibiting resin or epoxy primer to both sides.
.2 Base Coat: acrylic resin colored coating sufficient to bond granules.
.3 Stone Chips: selected colored mineral granules.
.4 Over glaze: acrylic resin semi-gloss clear coating to improve binding of chips.
.5 Oven cure product to factory specifications to ensure product cure prior to packaging and shipment.
.2 Color as selected by Architect.
PART 3 - EXECUTION:
3.1 Storage:
.1 Store materials in a dry covered area to minimize damage. Product must be kept dry, dust
free and well ventilation until time of installation. Do not cover with plastics.
.2 Remove only enough product for each days use returning unused pieces to their original package and recover.
.3 Check batch lot numbers utilizing material of the same number for each complete field wherever possible.
3.2 Preparation:
.1 Batten System:
.1 Install to 402 mm spacing as required to receive and to support the roofing system.
.2 Fix to rafters with approved quantity and type of fastener.
.3 Refer to local building code and applicable product approval reports.3.3 Installations:
.1 Install roofing system in accordance with all local building code requirements,
manufacturer’s published product manual standards and requirements described below.
.2 Underlay:
.1 When required apply underlay over rafters or solid decking prior to installing battens.
.2 Install underlay at right angles to slopes with minimum 75 mm horizontal lap and minimum 150 mm side lap.
.3 Extend underlay up curbs and at sidewalls 200 mm. Fasten over curbs and nailing strips.
.4 Place an additional layer minimum 3” wide up each valley over perpendicular underlay.
Note: Additional underlayment requirements may be required by local code for severe weather. Check all local code requirements and product reports.
.3 Battens:
.1 Install battens at right angles to rafter at 402 mm spacing to receive panels.
.2 Stagger butt joints of battens and fix securely in place at each bearing point. On open framing or where high winds uplift resistance is required, the butt joints shall be located centered on bearing points.
.3 Fasten battens with the appropriate type and number of fasteners through into the rafters unless otherwise noted.
NOTE: Installations in high wind areas may require specific and additional fasteners. Check all governing code requirements and product approvals.
.4 Install valley flashings prior to installation of panels. Ensure that all exposed edges in the valley metal are coated with touch-up to eliminate accelerated drip corrosion.
.5 Ensure that items passing through roof panels are fastened securely and flashed so as to allow for building movement.
.6 Panels:
.1 Work from numerous bundles of panels to ensure overall colour batch / production run blending throughout installation.
.2 Cut and bend panels at gables / hips / valleys / walls and or ridge to complete the panel installation as per installation manual.
.3 Install roof ridge and hip caps.
.7 Touch up and make good damage to finished surfaces using matching mineral granules and clear acrylic as supplied by the manufacturer.
END OF SECTION 07316.
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