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GoBoard PRO

GoBoard PRO

Product Short Description
GoBoard® PRO is a steam shower rated waterproof tile backer engineered for speed and durability, requiring less steps for same-day tile. GoBoard PRO can be used in any tiling project to complete your underlayment installation in half the time or less.
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Product Details

GoBoard PRO

Product Long Description
GoBoard PRO is the next generation ultra-lightweight, waterproof tile backer board from Johns Manville that takes waterproofing to the next level. Like GoBoard, GoBoard PRO is durable, easy to handle and can be cut right where it's installed with a basic utility knife without crumbling or disintegrating. Using proprietary technology, GoBoard PRO's outer facing has been improved to minimize wicking and increase overall board strength. This means your installation will require less fasteners. GoBoard PRO is faster to install than GoBoard, with less irritation and it is approved for steam showers.

Features

GoBoard PRO

Features

Fast Installation Complete shower tile projects in half the time or less with no mess or fiber glass irritation. 

Ultra-lightweight Up to 80% lighter than cement boards, yet engineered for durability with increased overall board strength.

East to Cut & Handle Simply cut with a utility knife and attach with GoBoard Fasteners or GoBoard Washers. Less penetrations with 12" spacing.

Vapor Barrier Built-in Low-perm design eliminates the need for an additional vapor barrier in steam shower applications.

Available in 1/2-in thick panels for walls, showers, steam showers, ceilings, floors, and countertops.

Documents

Where To Use GoBoard PRO

 TILE INSTALLATION USING GOBOARD PRO

GoBoard PRO is the next generation waterproof tile backer board from Johns Manville which is specifically engineered for the contractor, whose expertise and skill demands a professional grade product.

  • Steam Showers
  • Mud rooms
  • Bathrooms
  • Tub surrounds
Where To Use GoBoard PRO

Installation

GoBoard Installed

WATERPROOFING IS BUILT-IN

Every tiling project requires a durable surface under the tile, called a tile backer board. GoBoard PRO from Johns Manville is a tile backer board product that provides high performance, and ease of installation.

WOOD FLOORS

Framing:

  • All framing shall comply with local building code requirements.
  • Support framing must be designed for a maximum allowable assembly deflection of L/360 (L/720 for stone) under all intended live loads.

Control Joints:

  • Consult TCNA Handbook installation Method EJ171.
  • Location, width and details of control joints should follow sound architectural practices.
  • Architect, builder or design professional must specify location of all control joints.

Subfloor:

  • Joist spacing should not exceed 24" on-center.
  • Exterior grade 5/8" plywood or ¾" OSB should be securely glued and fastened to joists.

Installation:

  • Measure GoBoard PRO, then score and snap. To score, cut through outer facing with a utility knife along your measured line. To snap, firmly grab the board edge and quickly apply downward pressure at the scored line. Finally, cut the bottom facer at the snap line. As an alternative, completely cut through GoBoard PRO using several strokes of a utility knife or a power tool. See See Safety and Handling section for proper PPE and precautions.
  • Stagger all board joints, ensuring that they do not line up with subfloor joints, and leave a 1/8" gap between all corners, edges and changes of plane.
  • Apply mortar, as specified in the Approved Materials section, to the subfloor, combing it into a ribbed setting bed with a ¼" square notched trowel.
  • Laminate pre-cut GoBoard PRO to subfloor by firmly pressing into mortar, ensuring that it is fully embedded.
  • Fasten GoBoard PRO to the subfloor with GoBoard® Fasteners flush to the surface of the board at a maximum spacing of 12" and within ½" - 1" of the perimeter edges. For alternative fasteners specified in the Approved Materials section, the maximum spacing is 8".
  • As an alternative to traditional fasteners, fasten GoBoard PRO to the subfloor with GoBoard Washers at a maximum spacing of 12".
  • If a waterproof installation is required, completely fill all joints with GoBoard PRO Sealant and spread sealant on both sides of joint using a putty knife. Immediately apply GoBoard Seam Fabric over sealant using a clean putty knife and gentle sweeping motion. Do not soak through fabric with sealant. Finally, seal all fastener penetrations by applying sealant over each fastener and then spreading with a putty knife ensuring sealant covers entire fastener.
  • If waterproofing is not required, fill all board joint gaps with mortar. Place GoBoard Seam Fabric or 2" alkali resistant fiber glass mesh tape on the joint and ember with mortar ensuring it is fully covered.

CONCRETE FLOORS

  • Ensure that concrete floor is clean and fully cured and pre-fill surface imperfections with mortar, as specified in the Approved Materials section.
  • Follow wood floor installation instructions, however, skip the fastening step and ensure that GoBoard PRO is fully embedded in the mortar.

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.

SHOWERS

  • Follow instructions for walls, in the previous section.

 

STEAM SHOWERS

  • Follow instructions for walls, in the previous section.

 

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).

* A typical shower project, waterproof installation, following manufacturer’s installation instructions.
** Only board joints and fastener locations require GoBoard PRO Sealant or approved alternative waterproof sealant.

Warranty

HIGH PERFORMANCE - TRUSTED QUALITY

The GoBoard product line includes Polyiso foam board panels, a versatile shower pan kit, and essential tile backer accessories that when installed as a system, can qualify for a manufacturer limited warranty. Need help with one of our products? Contact us with your warranty questions, or download the warranty certificate in the documents above.