radiant heat

got some good info froma dealer of CRETE HEAT insulation last week. it is 2" thick and has rosets molded into the top side of it to hold the pex in place. they are layed out every 4" so i guy can route his lines furter apart or closer together. he suggested 5 layer 1/2" tubing that has an oxygen barrier 12" apart. i will need 7 300' loops and i'm going to centralize my manifold. he said do three loops in the front and three in the back then fill the center in with the 7th loop. seemed like he really knew his stuff. need a pump to circulate at 1gpm and a plate to regulate the water down to 100degres or a little less. i guess you dont want anything over 100. Also antifreeze. have the money saved up (more than i wanted to) going to plan on install as soon as the weather breaks. this fella even said he would deliver the material and make sure it was installed corecttly! Only have one shot do it right. i'll keep you posted and take pics.