What companies state that EFH is allowed under their LVT.
Marmoleum by Forbo. Spoke personally with Mark Doran at Forbo at Surfaces 2017. He said that Marmoleum is approved. He will get back to me about any of their other products that are allowed.
Maple Leaf / Lamisol Booth personnel at Surfaces 2017 stated that their LVT was compatible with EFH. Trying to find documentation.
Congoluem - Triversa can work with embedded TZ
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). Designflooring is warmer and softer underfoot than stone and ceramic tiles so is a popular choice for bathrooms, kitchens and sunrooms. Karndean's floors can be laid over underfloor heating systems for extra warmth. When visiting your local retailer, do remember to mention underfloor heating when selecting your floor. If you are arranging for installation of underfloor heating or have an existing system, we recommend making a note of the manufacturer and model. Your Karndean installer will need to ensure that your heating system is compatible with our flooring. We provide full guidance to our flooring installers about sub floor and adhesive preparation when laying Karndean floors over underfloor heating systems.