Onix Tubing Installation Manual

Common Radiant Floor &
This is one of our most popular installation
methods. Staple Onix underneath the wood
subfloor every 4" to 6" so that the Onix
maintains continuous contact with the wood.
Install a foil-faced fiberglass insulation (foil facing
up), leaving a 2" air gap between the foil and the
underside of the subfloor.
It is important to always insulate the exterior band
joists in this application.
Staple-Up
™
This technique is generally
used when hardwood
flooring is being
installed or when
there is no access to
install the Onix
from below the subfloor.
Always use a foil-faced fiberglass (foil facing up), leaving a 2" air gap
between the foil and the underside of the subfloor. It is very important to
select the correct nailer thickness, so that the Onix maintains continuous
contact with the underside of the upper floor or subfloor, but isn t crushed
or deformed.
Alternatively, a concrete mix or gypsum-based mix can be used to fill this
void.
Do not use staples or NailTites in this application. Use duct tape or
contractor s adhesive if the Onix needs to be held in place.
Sandwich Over Frame Floor
Use this technique when you
don t have access under
the existing floor or
when the under side of
the floor can t be used,
such as beamed ceilings.
Install a high-temperature foil-faced foamboard insulation, such as
Thermax¤ or equivalent, between the nailers. It is very important to
carefully select the correct nailer and foamboard thickness, so that the
Onix maintains continuous contact with the underside of the upper
floor or subfloor, but isn t crushed or deformed.
Alternatively, a concrete mix or gypsum-based mix can be used to fill this
void.
Do not use staples or NailTites in this application. Use duct tape or
contractor s adhesive if the Onix needs to be held in place.
Sandwich Over Frame Floor
This is a popular option when
converting a building
with an existing slab,
such as a garage or
basement, to a radiant
floor heating system.
Install a high-temperature foil-faced foamboard insulation, such as
Thermax
¤
or equivalent, between the nailers. It is very important to care-
fully select the correct nailer and foamboard thickness, so that the Onix
maintains continuous contact with the underside of the upper floor or
subfloor, but isn t crushed or deformed.
Do not use staples or NailTites in this application. Use duct tape or
contractor s adhesive if the Onix needs to be held in place.
Sandwich over Slab
Staple the Onix down to the
wood subfloor. Install
a minimum of 3/4" of
concrete mix above
the top of the Onix.
More may be required
depending on structural
loading. Use one of the
new gypsum-based mixes, or
fiber-reinforced concrete.
You must use a foil-faced insulation for this application, with the foil fac-
ing up. Allow a 2" minimum air space between the foil surface and the
subfloor.
Thin Slab over Frame Floor
with fiberglass insulation
with foamboard insulation
with fiberglass insulation