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WALLS

Framing Requirments:

• All framing should comply with local building code requirements.
• Framing members shall be spaced a maximum of 16" on-center and minimum 2"x 4" nominal (wood) or No. 20 gauge (metal).
• Studs shall be furred out flush with receptors and GoBoard PRO vertical edges should be continuously supported.
• As an alternative to furring strips, GoBoard PRO can be wet-shimmed by applying thin-set mortar directly to studs.

Installation:

• Measure, cut through outer facing with a utility knife and quickly applydownward pressure to snap. As an alternative, completely cut through GoBoard PRO using several strokes of a utility knife or a power tool. See Safety and Handling section for proper PPE and precautions.
• Install GoBoard PRO leaving 1/8" gaps between all board edges, corners and changes of plane. GoBoard Spacers, tile spacers or paint sticks can be used to help maintain proper gapping between boards while installing fasteners. Fasten GoBoard PRO to studs with GoBoard Fasteners flush to the surface of the board at a maximum spacing of 8" and within ½" of supported edges. For alternative fasteners specified in the Approved Materials section, the maximum spacing is 6".
• As an alternative to traditional fasteners, fasten GoBoard PRO to the studs with GoBoard Washers at a maximum spacing of 12".
• For waterproof applications requiring ANSI A118.10, seal all joints and fastener penetrations with GoBoard Pro Sealant, GoBoard Sealant or a sealant specified in the Approved Materials section.
• Once all boards are installed with required 1/8" gaps, seal joints by liberally applying a continuous bead of sealant making sure to completely fill 1/8” gaps. Cutting a 1/8" to ¼” hole in the sealant nozzle will help force sealant into joint. Spread excess sealant with a putty knife at least 1" beyond either side of joint keeping in mind the slightest pin hole may result in a leak, so careful attention is required when sealing joints. Depending on climate, sealant can begin to skin over in as little as 15 minutes.
• Optionally, joints can be reinforced with GoBoard Seam Fabric following detailed instructions at www.jm.com/goboard.
• Once all board joints are sealed, seal fastener penetrations by applying a large bead of sealant over each fastener and then spread sealant with a putty knife making sure each fastener is completely covered with sealant.

COUNTERTOPS

• Securely fasten ¾" exterior grade plywood to cabinet ensuring maximum surface variation is no more than 1/8" in 10' from the required plane.
• Follow instructions for wood floors in previous section.

THICK BOARD GUIDE (1-in, 1.5-in, and 2-in)

• Cut with circular saw, table saw or other power tools capable of cutting straight and square. Cutting with utility knife is possible, but requires cutting from both sides.
• GoBoard PRO edges can be machined, but removing large amounts of material from one side of board may result in curling.
• GoBoard Pro Sealant, GoBoard Sealant and mortar will adhere directly to foam edges or exposed foam.
• When constructing tub surrounds, benches and other tileable features, adhere pieces together with GoBoard Pro Sealant or GoBoard Sealant. Long wood screws can be used to secure feature while sealant cures. For waterproof applications, seal all penetrations.
• As with all GoBoard products, the foam core is waterproof. Thus, no additional waterproofing is required when installing tile direct to exposed foam.

SHOWERS

• Follow instructions for walls, in the previous section.

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STEAM SHOWERS

• Follow instructions for walls, in the previous section.

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TUB SURROUNDS

• Follow instructions for walls, in the previous section.

CEILINGS

Framing Requirements:

• All framing should comply with local building code requirements and must be capable of supporting total system dead load with deflection not to exceed L/360 of the span.
• Framing members shall be spaced a maximum of 16" on-center and GoBoard PRO edges should be continuously supported.

Installation:

• Starting on one edge of the ceiling, measure the first GoBoard PRO to orient in the same length-wise direction as the wall installation and then proceed with cutting methods as previously discussed.
• Install fasteners, seal joints, change of plane joints and fastener penetrations following wall instructions.

APPROVED MATERIALS

Fastening

• Wood – GoBoard Fasteners (1¼-in and 1 5/8-in long), GoBoard Washers, backer board screws (1¼ and 1 5/8-in long), galvanized roofing nails (minimum 1½-in long) or 16 gauge galvanized staples (minimum 1-in x 1-in).
• Steel Framing – GoBoard Fasteners (1¼-in and 1 5/8-in long), GoBoard Washers, or backer board screws (1¼-in and 1 5/8-in long).

Bonding

• Dry set mortar compliant with ANSI A118.1 standard or Polymer modified thin-set mortar compliant with or ANSI A118.4 standard.��

Joint Sealing

• GoBoard Pro Sealant, GoBoard Sealant, approved alternative��sealants, or GoBoard Banding plus accessories.

Liquid Waterproofing Membrane

• Approved product list is available in the approved alternative sealants document.

Grout

• Cement grout compliant with ANSI A118.6 standard, high performance cement grout compliant with ANSI A118.7 standard or epoxy grout compliant with ANSI A118.8 standard.

Tools

• Utility knife, scissors, pencil or pen for marking, straight edge, T-square, measuring tape, flat putty knives with blunt edges, corner putty knife, appropriate screw fastening device, ¼-in square notched trowel, 3 /16-in x 5/32-in v-notch trowel, caulk gun and paint roller (for liquid sealant).