What flooring companies allow electric radiant heating under their floors?
Marmoleum is suitable to embedded EFH (per conversation at Surfaces 2017 with man named Mark who is their lead tech).
Allure, Q. Can I install Allure over radiant heated floors? A. Yes, you can. However, the heating element must be recessed a minimum of ½” below the Allure flooring. Do not turn the thermostat controlling the radiant heat over 85°F (30°C).
Karndean Designflooring is suitable for installing over underfloor heating systems, providing they have been insulated so that the surface temperature does not exceed 27°C (80°F).
US Floors: In-floor Radiant Heat: COREtec Plus can be installed using the floating or glue down method. When gluing floor, use only USFloors Wood and Bamboo Flooring Adhesive over manufacturer’s recommended substrate. • Turn the heat off for 24 hours before, during and 24 hours after installation when installing over radiant heated subfloors • Floor temperature must not exceed 85°F (30°C). • Failure to strictly follow adhesive manufacturer’s guidelines may result in failure and void warranty. Warning: Electric heating mats that are not embedded into the subfloor are not recommended for use underneath COREtec Plus floors. Using electric heating mats that are not embedded and applied directly underneath COREtec Plus floors could void the warranty for your floor in case of failure. It is best to install COREtec Plus flooring over embedded radiant floor heating systems and adhere to the guidelines listed above.
There are many more that appear on a google search. Also see tech bulletin concerning heating under laminate. Those same companies my make a vinyl product approved for installation over radiant heat.