Flooring over radiant heat panels
Hi, all. I need some flooring help. I a few questions. We have new hydronic radiant (Viega) heat panels throughout the house and were planning to put rift cut oak strip on top. The flooring dealer says it's the only kind of hardwood he'd recommend for radiant heating. He prefers engineered wood. My contractor found one that's fits the budget but said he will need to glue it down because it's not tongue and groove. (He also said he'd have to glue the oak in spots where he can't nail into the floor due to the heat tubing. I don't want to use any glue - I've heard it can lose its adhesion and also off-gas with floor heat. It would also make it difficult, I imagine, to remove the flooring if necessary. Does anyone know anything about this? What else can safely be used over hydronic radiant heat besides tile/stone which I don't want to use throughout. And what will conduct the heat well? I had long had my heart set on cork for the kitchen and found a beautiful sample of a floating floor which the manufacturer says is OK up to 85 degrees. Our heat is supposed to be around 80. But I am concerned that the cork won't conduct the heat and it will be cold. Any feedback/input on this? Finally, Would any kind of floating floor such as Marmoleum block the heat and leave us cold? I've been trying to find this information on-line but haven't been successful. Flooring manufacturers talk about their products being acceptable for radiant floors meaning they will stand up to the heat but they don't discuss the heat conductivity angle. I haven't been able to find a radiant flooring association that has this information, either. Thanks for all feedback.