Re: Who has radiant floor heat in there workshop?

Posted by Mydeere on March 22, 2007 at 09:28:06 from (24.44.137.250):

In Reply to: Re: Who has radiant floor heat in there workshop? posted by Randy in Pa on March 22, 2007 at 07:06:35:

A 30 x 70 slab can be poured all at once. Just be sure to place control joints in a way that you end up with sections of floor no greater than 1500 sqft. My main shop floor is 30 x 50 and I placed it all at one time with two control joints. Your probably looking at 3 control joints for your floor. Run your piping parallel to the control joint to minimize crossing the joint if your worried about it. You will have to cross the control joint at some point which is no big deal. Look in the pic and you will see where all of the supplies and returns pass under the CJ to get to the manifold. The CJ is that metal piece that looks like a steel stud. Have the sales rep from whatever company your buying your radiant supplies from do a heat loss calc and layout plan for you. They don't usually charge for this and you will get a drawing showing what size tubing you need, what spacing to install it at and a layout for each loop. You really want them to provide this for you so that each loop will be balanced so you end up with a nice even heat distribution and no cold spots. A radiant system is made up of multiple loops of similar length and not just one long run of tubing. Also as far as control joints go, use the cast in place ones with the tear away stiffner so you don't have to risk cutting through one of your lines when the slab guys cut the control joints. Make sure you go over this with your floor finishers before the show up on site so they are prepared.

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