“We have had snow on the ground around the house for the last 6 days with daytime temp not reaching double figures and night average minus 2 degrees. The photo is from the study looking north we have been away for a couple of days and heating set on standby the study temp has dropped to 18 degrees overnight and gets to 20 plus from the sun only during the day. Very pleased with Porotherm blocks and no condensation.” Shari & Grant Stalker, July 2021
