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Information referred to on this FAQ page can be found in more detail on specific
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Close spacing provides the best comfort. Tubing spaced further apart can
create hot/cold spots, especially with low R-value finished floor goods. Closer
spacing also provides better performance.
ThermalBoard is typically installed just prior to the installation of finished
flooring goods. Store ThermalBoard on the job site in a dry, cool space and it is ready
to be installed with delays, in the natural progression of construction.
NO. ThermalBoard is specifically designed for attachment to a subfloor (plywood or OSB).
If ThermalBoard is used over concrete, the installer must employ a vapor barrier and
securely attach ¾ plywood or OSB to the concrete prior to application of the ThermalBoard.
Yes, this is great advantage of ThermalBoard. You must use hardwood nails long enough
to secure ThermalBoard to the sub floor (see the ThermalBoard Application/Installation
manual).
We recommend a minimum 1/8” plywood or Masonite sheet be applied over ThermalBoard to
avoid the remote possibility of extreme point load damage (kids with jack knives).
Yes. When installed with a slip-sheet or approved crack isolation membrane and proper
reinforcement mesh, hard pack mortar may be applied over ThermalBoard.
Leaks sometimes occur during construction, primarily due to conflicting trades. Prolonged
exposure to moisture will result in ThermalBoard swelling. The leak should be immediately
repaired. Immediate drying of the area will usually avoid any damage to ThermalBoard.
As you would normally. Tubing approaching a manifold location can be accommodated in
custom grooves (with a standard 5/8” router) or covered with mortar.
