Hakwood European and American Oak, European Ash, American Walnut, Iroko, Merbau and Burma Teak floors may be installed over radiant heat. Only glue down installation is recommended. Please see our installation instructions.

Note: When radiant heat is installed in concrete, mortar beds, or gypsum cement, it is very important to wait until these are completely dry before you install your Hakwood flooring on top. (This can take several weeks. Be patient.) Wait until the humidity in the structure stabilizes to the average level expected for the area in which the Hakwood flooring will be installed. Then allow the flooring to acclimate to this humidity level before installation. This will minimize dimensional changes due to moisture.

A. The maximum temperature of sub floor under normal use should not exceed 80°F. (check with heat system manufacturer).
B. For correct water temperature inside heating pipes, check with manufacturer's suggested guidelines.
C. Heating pipes must be covered with 1 ¼” of concrete or minimum 1/8“ below bottom side of plywood sub floor. In addition, for plywood sub floor, heat transfer plates or insulation boards must be under pipes.
D. Before installation of Hakwood flooring, heat system must be operated at normal living temperature for a minimum of 14 days. One or two days before flooring is laid, switch off heating unit. (At the time of installation sub floor must be 65 - 68°F) Bring heat up over 3 to 4 days.
E. Room temperature should not vary more than 10 ° season to season. 40 to 60% humidity in home for radiant heated rooms.
F. Must be a Hakwood approved radiant heat system (8 watts per sq. ft. heating capacity).
G. If you have questions please contact Hakwood

Caution: The subfloor surface must never exceed 80° F in temperature.

Note: Because Hakwood cannot control the subfloor heating system it will not give any warranty on subfloor heated applications.