Can I install cork over Radiant heated floors?
can be applied over radiant heat using two different installation methods. When
doing so the radiant surface temperatures should never exceed 82 degrees. Some
cork product may have a lower temperature recommendation. Always review the
products installation instructions. The system should be running for at
least 1 week. Then bring the flooring into the work area to acclimate 3-5
days before installation. See our "FLOORING 101" for related
acclimation and radiant information.
Here are two
basic methods for installing cork flooring over radiant subfloors
CORK TILES *glue-down
Cork tile flooring should be adhered directly to the plywood or concrete
subfloor using the Bostik Vinyl-Grip
99. Remove any surface sealers and contaminates that could
cause a bond failure with the adhesive. The subfloor must be dry before
installation can proceed.
Floating cork products are also excellent for radiant heat
installations and are designed with freedom to expand as a unit. These products
are manufactured with a man made (HDF) High Density Fiber core and cork is
applied on the top and bottom. The advantage of this type of cork floor is that
it requires no adhesives or nails for proper installation and allows the
homeowner flexibility if they ever decide to change the floor covering. When
covering cement slabs (on-grade or below-grade) use 6-8mil
polyethylene sheeting as a moisture
barrier, omit this poly sheeting when covering wood
sub-floors. Floating corks are installed without underlayment. However, if
using a pad underlayment best practice is to use a dense type pad such
as; Bellawood Premium underlayment, Bellawood Platinum, Eco Silent
Sound HD, or 1/4" cork underlayment rather than a foamy
pad. Cork seams need supporting.
Technical and Installation 4/2019