Installation Guide
GoBoard
®
4" for Floors & Countertops – Installation Instructions
WOOD FLOORS
Framing, Control Joints and Subfloor Requirements:
Framing:
• All framing should 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 16" o.c.
• Exterior grade s" plywood or ¾" OSB should be
securely glued and fastened to joists.
Installation:
• Measure GoBoard,
®
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. An
alternative method would be to stand the board on edge
and place your knee against the back of the board directly
behind the scored line bending the board backward against
your knee.
• Stagger all board joints, ensuring that they do not line
up with subfloor joints, and leave a 8" space between all
corners and edges.
• 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
®
to subfloor by firmly pressing
it into the mortar, ensuring that it is fully embedded.
• Fasten GoBoard
®
to the subfloor with backer board
screws or roofing nails, as specified in the Approved
Materials section, flush with the surface of the board with
a maximum spacing of 6" and within ½"– 1" of the perimeter
edges.
• Fill all joint gaps with mortar, as specified in the
Approved Materials section. Place 2" alkali resistant
fiber glass mesh tape on the joint and embed with mortar,
ensuring it is fully covered.
• If a waterproof installation is required, seal all joints and
fastener locations with two coats of liquid waterproofing
membrane, as specified in the Approved Materials section,
making sure to extend liquid water proofing membrane at
least 1" beyond mortar.
CONCRETE FLOORS
Installation:
• 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
®
is fully
embedded in the mortar.
COUNTERTOPS
Installation:
• Securely fasten ¾" exterior grade plywood to the cabinet,
ensuring that maximum surface variation is no more than
8" in 10' from the required plane.
• Measure GoBoard,
®
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. An alternative
method would be to stand the board on edge and place
your knee against the back of the board directly behind the
scored line bending the board backward against your knee.
• Apply mortar, as specified in the Approved Materials
section, to the plywood base, combing it into a ribbed
setting bed with a ¼" square notched trowel. Fully embed
GoBoard
®
by firmly pressing it into the mortar.
• Fasten GoBoard
®
to the subfloor with backer board
screws or roofing nails, as specified in the Approved
Materials section, flush with the surface of the board with
a maximum spacing of 6" and within ½"– 1" of the
perimeter edges.
• Fill all joint gaps with mortar, as specified in the Approved
Materials section. Place 2" alkali resistant fiber glass mesh
tape on the joint and embed with mortar, ensuring it is
fully covered.
•
Seal all joints and fastener locations with two coats of liquid
waterproofing membrane, as specified in the Approved
Materials section, making sure to extend liquid water
proofing membrane at least 1" beyond mortar.