In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
sand for heat tranfer media?
a buddy of mine is building his home and it's a log cabin, but huge. anyway, he is always asking for advice, but never want help with the labor. he usually finds my insight really helpful and takes it, but he came up with the idea of using sand to enhance the heat transfer of his sleeper radiant system. it kind of sounds like a good idea, but i never heard of it, has any of u guys done this?