1. System consists of mechanical attachment
and cement backer board (and joint treatment).
1.2 RELATED SECTIONS
1. Section 06100 - Rough Carpentry
2. Section 09100 - Metal Support Systems
3. Section 09300 - Tile
1.3 DESIGN LIMITATIONS
1. Maximum allowable substrate system deflection, normal to plane of
wall: L/360. Steel framing shall be G60 galvanized and be 20 gauge minimum.
Framing shall be located at 400 mm (16") on centre spacing.
2. Details shall conform with SMARTBOARD CANADA recommendations and shall
be consistent with Project requirements. Consult with SMARTBOARD CANADA
when special non-standard conditions arise.
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Note: Expansion and control joints are required in system where they exist
in substrate, and where system adjoins dissimilar construction.
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1.4 QUALITY ASSURANCE
1. Contractor Requirements:
- .1 Be knowledgeable in proper installation of cement backer board.
- .2 Provide proper equipment, workers and supervision on job site to
install cement backer board in compliance with Contract Documents and manufacturer's
specifications and recommendations.
1.5 SUBMITTALS
1. Submit in accordance with Section (01340), product data, including
literature, including specifications, application instructions and details.
1.6 DELIVERY, STORAGE AND HANDLING
1. Deliver materials supplied by system manufacturer in original, unopened and
undamaged packaging with legible manufacturer's identification and labels intact.
2. Make available material safety data sheets (MSDS) as required.
1.7 SITE CONDITIONS
1. Maintain temperatures within range of 7° C to 38° C. Provide adequate ventilation
to carry away excess moisture. Wood framing shall be of moisture content as per service
condition. Do not install wet cement backer board.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
1. Cement backer board: Manufactured by SMARTBOARD CANADA, 2820 Fourteenth Ave., Markham, Ont., Canada L3R 0S9. Phone: (905) 477-4472. Fax: (905) 470-4027.
2.2 MATERIALS - CEMENT BACKER BOARD
1. Smartboard Cement Backer Board: Interior/Exterior grade cement board, 12.5 mm (7/16") thickness; 914 mm (36") wide by 1524 mm (5'-0")long and 1200 mm (4') by 2400 mm (8') long.
2.3 MATERIALS - OTHER MANUFACTURERS
1. Tape for joint reinforcement: 2" wide coated glass fibre tape (Do not use drywall tape).
2. Fasteners:
- .1 Screws; steel framing: steel, Type S waferhead, 32 mm (1 1/4"), with corrosion inhibitor coating.
- .2 Screws; wood framing: steel, waferhead, 32 mm (1 1/4"), corrosion resistant coated.
- .3 Nails; wood framing: 38 mm (1 1/2) hot dipped galvanized roofing nails.
3. Framing: Design walls, ceilings and floors for deflection not exceeding L/360 of span including live and dead loads. Place studs 400 mm (16") on centre. Steel studs shall be 20 gauge or heavier. Secure studs of free standing furred walls to the exterior wall with wall furring brackets, or brace laterally with horizontal studs or runners spaced 1220 mm (4'-0") o/c.
4. Subfloor: Use 15.5 mm (5/8") or heavier exterior grade plywood.
5. Adhesives/Mortars: Use products compatible with Smartboard:
- .1 Meeting ASTM C557-73: Multi-purpose adhesive (for sub floor to framing attachment).
- .2 Meeting ANSI A136.1 Type 1: Ceramic tile adhesive.
- .3 Meeting ANSI A118.4: Latex fortified mortar.
- .4 Meeting ANSI A118.1: Thin-set mortar (can be mixed with acrylic latex adhesive).
6. Grout: Use products compatible with Smartboard which meet ANSI A118.6 Latex fortified grout, commercial dry-set, mixed with acrylic latex latex grout adhesive.
7. Tile: Shall meet ANSI A137.1.
PART 3 - EXECUTION
3.1 SUBSTRATE
1. Substrate shall be of a type approved by cement backer board manufacturer.
2. Substrate shall be dry and free of dust, dirt, and compatible with adhesive where applicable.
3. Report unsatisfactory conditions to contractor for correction by substrate installer before application of system.
3.2 PREPARATION
1. Adhesive and joint compound: Remix as received from manufacturer prior to beginning application. Mix in accordance with package instructions.
3.3 EXTERIOR CONCRETE PANEL SYSTEMS
1. Framing Erection
Space wood and steel framing a maximum of 16" o.c., for EIFS a maximum of 24" o.c. Adequate diagonal bracing meeting design requirements must be installed prior to application of substrate. Lateral bracing of steel framed curtain walls is required prior to finishing exterior walls. Drywall or metal framing spaced a maximum of 4' o.c. is acceptable. The studs of freestanding furred walls must be secured to exterior wall with wall furring brackets or laterally braced with horizontal studs or runners spaced 4' o.c. max.
2. Control Joints
Control joint spacing, location and design of building control joints shall be the responsibility of the Architect/Engineer of Record.
3.4 SMARTBOARD SHEATHING APPLICATION
When installing any concrete panel sheathing product, use standard board construction practices such as staggering joints and L-cutting panels around openings.
A. Apply 7/16" x 4'x8' SmartBoard Sheathing horizontally with face side out (textured side). Place edge up to prevent water penetration at joints. Use diagonal bracing where necessary. Space 1 1/4" 11-ga. galvanized nails 8' o.c. at each stud.
B. Apply 7/16" x 4' x 8' SmartBoard Sheathing vertically with textured side out. Space nails 8" o.c. on framing members.
C. For screw application, use same fastener spacing as for (A) (B).
D. For application in steel-stud curtain wall construction, see specifications in SA-923
3.5 CORNER BRACES
When required install 1" x 4" diagonal corner braces, or equal, at all external corners, let into face of studs, corner posts, sill and plates, or as required by applicable code. On steel framing secure steel strap bracing or equivalent as required by design or code.
3.6 WATER BARRIER
An approved water barrier should be installed over SmartBoard sheathing prior to exterior surfacing application in weeped and flashed systems.
3.7 EXTERIOR SURFACING APPLICATION
A. Flexible stucco wall coating wood, vinyl or aluminum siding. Drive fasteners through sheathing and into studs for min. penetration of 1 1/4" into studs. Butt end joints of siding over centers of studs.
B. Flexible stucco wall coating. Consult SmartBoard for details on mesh adhesive, reinforcing fabric, base coat and texture coat application. E.I.F.S. systems should follow manufactures directions
C. Wood shingles. Apply treated or decay-resistant 3/8" x 1 5/8" lath strips to SmartBoard sheathing. Nail lath through sheathing with 8d nails penetrating into studs. Space shingles according to their intended exposure. Nail outer course of shingles to lath with small-headed, corrosion-resistant shank nails. Project butts of outer course 1/2" below lath.
D. Masonry veneer. Provide clear space of at least 1" between back of masonry and face of sheathing. Attach masonry ties to wood studs with nail driven through sheathing and into studs. Use nails penetrating at least 1 1/4" into studs (at least 6d common nails). Anchor brick with approved brick ties, screw-attached to each steel stud using 1 1/4" Type S-12 Pancake Head Corrosion-Resistant Screws. Anchor other masonry units to each stud in a similar manner, 16" o.c. max, or as recommended by Brick institute of America.
E. Other exterior surfacing. Apply with mechanical fasteners through sheathing into the framing. Consult exterior surfacing manufacturer for other details.
3.8 INTERIOR FLOOR APPLICATION
1. Subfloors: Apply 1/4" of multi-purpose adhesive to centre of top flange of joists. Place 15.5 mm (5/8") exterior grade plywood sheets with long dimension across or parallel to wood or steel joists spaced 400 mm (16") on centre. Fasten plywood to wood joists with adhesive and suitable nails or screws spaced 305 mm (12") on centre. Fasten plywood to steel joists with S-12 screws placed 400 mm (16") on centre.
2. SmartBoard Panel Application: Laminate 1/2" SmartBoard to subfloor using ceramic tile adhesive, latex fortified mortar or thin-set mortar mixed with acrylic latex additive. Use 1/4" square-notched trowel for thin-set, 5/32" V-notched trowel for adhesive. Place SmartBoard with joints staggered from subfloor joints, then fasten to subfloor with wood screws or galvanized roofing nails spaced 6" to 8" o.c., both length and width over the entire area, allowing 1/8" wide space between panels to be filled solid with dry-set or latex-Portland cement mortar. Joints should be taped for best results.
3.9 INTERIOR WALL APPLICATION
1. Space wood and steel framing a maximum of 400 mm (16") on centre. Score and snap SmartBoard to desired dimensions. If applying SmartBoard over solid backing (ie. plaster, gypsum board or plywood), use fasteners of sufficient length to achieve typical penetration through backing to anchor into wood or steel studs. Set tile in dry-set or latex-portland cement mortar or other approved setting materials.
3.10 BATHTUB WALL APPLICATION
1. Install tub level, and support with metal hangers. The opening for the recessed tub is not to exceed 12.7 mm (1/2") more than the total length of the tub. Pre-cut Smartboard to required sizes and make necessary cut-outs. Fit ends and edges closely but do not force together. Stagger end joints in successive courses. Fasten Smartboard to wood studs spaced 400 mm (16") on centre with 32 mm (1 1/4") wood screws or 38 mm (1 1/2") galvanized nails spaced 210 mm (8") on centre. Fasten Smartboard to steel studs spaced maximum 400 mm (16") on centre with 32 mm (1 1/4") steel screws spaced 210 mm (8") on centre. In double layer walls where Smartboard is installed over base-layer gypsum board, use a water barrier over the gypsum board.
3.11 SHOWER RECEPTOR WALL APPLICATION
1. Fasten Smartboard to wood or steel studs in a straight plane to within 25 mm (1") of shower pan bottom or waterproof membrane. When using either wood or steel studs and a moulded or precast shower receptor, install so that the edge of the Smartboard sits on the lip of the receptor. When ceramic tile of the shower floor is to be installed, notch wood studs a minimum of 6 mm (1/4") deep and at least 125 mm (5") above the high point of the shower floor, to accommodate the required waterproof membrane. Fur out steel studs with 6 mm (1/4") or thicker furring strips, starting at least 125 mm (5") above the high point of the shower floor. Fill the space between the edge of the Smartboard and the receptor with flexible sealant.
3.12 SHIELDS/HEARTH PROTECTOR WALL APPLICATION
1. Attach a double layer of furring strips to wall framing with 56 mm (2 1/4") wood screws or 56 mm (2 1/2") galvanized roofing nails. Cut Smartboard wall shield to panel and furring strip sizes with scoring tool. Attach to wall framing with 56 mm (2 1/2") galvanized roofing nails.
3.13 FLOOR PROTECTOR APPLICATION
1. To a solid surface, apply 6 mm (1/4") thick latex-fortified portland cement. Attach Smartboard with wood screws or galvanized roofing nails at 210 mm (8") on centre.
2. Hearth Extension Designs: To use SmartBoard in Hearth Extension Designs, use guidance specified by local Building Code and the fireplace manufacturer.
3.14 COUNTERTOP APPLICATION
1. Install 12.7 mm (1/2") minimum plywood across unit supports spaced at a minimum of 400 mm (16") on centre. Fasten Smartboard to plywood with galvanized roofing nails spaced 100 mm (4") on centre in both directions and around edges.
3.15 JOINT TREATMENT FOR TILED AREAS
1. Pre-fill all SmartBoard panel joints, and joints where SmartBoard panels abut other panels or surfaces such as gypsum board, with tile setting mortar or adhesive. Immediately embed tape and level the joints.
3.16 JOINT TREATMENT FOR NON-TILED AREAS
1. Seal Smartboard with thinned ceramic tile adhesive and embed joint tape over joints.
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