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Cox Tile in San Antonio, TX, uses the proper size
trowel over electric radiant heat to ensure adequate coverage of the mortar.
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Enter now the trend towards building a “green” or sustainable home.
There is much confusion as to what products are truly “green.” What is
indisputable is that radiant heat, whether it is provided in water-filled tubes
(hydronic) or electric heating elements, typically provides up to 30% higher
energy efficiency than forced air. Contact electric radiant manufacturers for
more information on how to use these quality products in “green projects.”
The Tile Council of North America (TCNA) has
introduced several approved methods of installation over different substrates
for both hydronic and electric heating systems. Go to www.tileusa.com for these
details and to order the Handbook. Generally, hydronic radiant floor systems
are often used in larger areas or throughout the home. They also can be used in
both commercial and residential areas where hot water is already used as a heat
source. Methods for hydronic systems include situations where the tubes are
embedded into a concrete slab, stapled between the floor joists, or installed
over an existing subfloor.
Longtime NTCA supporter Easy Heat offers a cable set, laid into the
floor with space between the cables, attached to a programmable thermostat that
can be turned on when required. Basically, the three types of electric heating
elements are the cable sets, wire that is pre-installed on mesh mats, and mats
that have the wire embedded into the system. I urge you to research all these
systems to find the one that best suits your needs.
Because the tile contractor is not a licensed electrician, the
successful installation of ceramic tile or natural stone over an electric
radiant system requires some planning and coordination. Work with your builder,
architect or design professional to agree to a well thought-out plan that
includes the approval of both parties.
The NTCA recommends the use of a crack isolation
membrane for these types of installations. This follows the methods currently
approved in the TCA Handbook. However, some of the radiant heat manufacturers
may warrant their systems directly adhered to the subfloor, so it is suggested
you research this issue and get in writing the manufacturer’s recommendations.
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Electric radiant-heated floors come in a variety of
formats, lengths and widths and can be custom fit to any application.
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One other
important installation tip is to allow the mortar and grout to properly cure
prior to turning the system on. If this is not done, the result could be
powdery or weak grout or mortar and the installation could be compromised. The
NTCA Reference Manual has a quality document it produced on radiant heat
installations. Contact them at www.tile-assn.com for more information on how to
obtain this.
The United States continues to be a market receptive
to radiant heat installations for ceramic tile and natural stone. Still, we
pale in comparison to other countries in the use of the product. This is a
perfect way to add profit and value to a project. But it requires educating
yourself on the systems available. It takes some investment in time to be a
professional installer. Heated floors provide you with a unique opportunity,
and I urge you to consider incorporating this skill into your business
strategy.