Floor Joist Heating Issues: Siegenthaler Suggests… On the Hydronic Based Biomass Heating Systems Discussion Board, John Siegenthaler answers student questions… How do you deal with cold floors over unheated or outdoor spaces? If radiant heat (typically used for walls/ceilings) for joisted floors is properly designed and installed,… Continue reading “Floor Joist Heating Issues: Siegenthaler Suggests…”