GoBoard Install Guide

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How to Attach GoBoard to
Floors & Countertops
Before you attach GoBoard to floors, you need to apply thin-set mortar
directly on a clean, dry and flat subfloor or countertop plywood base.
1
Mix mortar until it’s the consistency of peanut butter
2
Take a notched trowel to apply and comb the mortar
3
Only apply enough mortar at a time for one piece of GoBoard so it
doesn’t set up (harden) before you get the board down
4
Press your piece of cut GoBoard into the mortar
5
Fasten using either backer board screws or roofing nails
6
Apply mortar to all joints, edges and fastener locations, wiping flush against the board
7
Embed fiber glass mesh tape along the joints and edges, then allow to completely dry
How to Waterproof GoBoard on the
Floors & Countertops
It is recommended, but not required, to use a liquid waterproofing for
floor and countertop applications. If a waterproof installation is required:
• Seal all joints and
fastener locations with
two coats of liquid
waterproofing membrane
• Extend the membrane at
least 1" beyond the mortar
• Allow to completely dry
NOTE: Be sure to follow the manufacturer’s instructions when mixing and applying the mortar
NOTE: Stagger all board joints to make sure they do not line up with the subfloor joints
NOTE: Skip the fastening step if you are applying tile to concrete floors