GoBoard Install Guide

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How to Attach GoBoard to Walls & Ceilings
1
After you place each board to see that it fits snugly, mark the stud
location on GoBoard so you know where to attach it
2
Liberally apply a continuous layer of polyurethane sealant on the bottom edge,
making sure that it squeezes out when you position, set, or butt the boards next
to each other to ensure the seal is waterproof
3
Fasten the first piece of GoBoard to the stud using the backer board screws
or roofing nails
4
Make sure your nails or screws are flush with the surface of the GoBoard,
hammering the nails down if necessary
5
Nails or screws need to be a maximum of 6 inches apart and within ½" to 1" of the edge
Continue attaching GoBoard pieces until the entire space is covered.
ALTERNATE METHOD:
• Leave about ⅛" gap between each board
• Fill the joint gaps with mortar (see instructions for mixing mortar on page 7)
• Place fiber glass mesh tap on the joint and embed with mortar, ensuring it is fully covered
How to Attach GoBoard to Steam Showers
Follow the instructions for installing GoBoard to walls and ceilings when
installing a steam shower. However, a separate vapor barrier must also
be installed.
INSTALL A VAPOR BARRIER (pick one):
• Install a manufacturer-approved vapor barrier directly to the wall studs and ceiling
framing behind GoBoard (per the manufacturer’s instructions)
• Install a manufacturer-approved vapor barrier or waterproof membrane over the
external surface of GoBoard (per the manufacturer’s instructions)
NOTE: Be sure to leave ⅛" space between each board, floor or wall joint for the sealant or mortar to
fill the gap to create a seamless structure
NOTE: A steam shower is different from a regular shower because it’s essentially a spa-like steam
room that also offers typical shower features
NOTE: If you choose to use mesh tape and mortar, you do not need to also use polyurethane sealant
unless you are installing GoBoard above a bathtub or shower