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Old 10-28-2012, 09:12 PM   #1
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Hey guys, im thinking about going with the radiant heat in my garage, can you get the plastic water pipe from home depot, or is it a special order, also the wire mesh, where would you get that?
thanks, if you could just send a link to where to get it would be great
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Old 10-28-2012, 09:24 PM   #2
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Originally Posted by corzy View Post
Hey guys, im thinking about going with the radiant heat in my garage, can you get the plastic water pipe from home depot, or is it a special order, also the wire mesh, where would you get that?
thanks, if you could just send a link to where to get it would be great
just google pex for slab heating....
The wire mesh you can get at a good lumber yard or concrete supply house.
Don't forget insulation too
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Old 10-28-2012, 09:46 PM   #3
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ok thanks, found a "pex supply" website, just under $300 for 1000' should do a 2 car garage and our small 400sq foot addition...not too bad.
any reason you couldn't use zip ties to hold it to the mesh?
and is 1/2" big enough? or too big?
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Old 10-28-2012, 11:22 PM   #4
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check with your lumber yard. they make a rigid insulation that has knobs in it for wrapping and securing you pex tubing to. it is specifically made for use with pex tubing. I don't have a link for it. the one I've seen used was 2" thick with a green material applied to the knobs and insulation board. makes running the pex a lot faster.

check out and see if you have a plumbing supply company (not one for regular joes but the pros). in my area they typically perform radiant heating calculation and can let you know the size tubing and manifolds you'll need.

sorry wish I could remember the manufacturer's name.
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Old 10-29-2012, 02:27 AM   #5
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check with your lumber yard. they make a rigid insulation that has knobs in it for wrapping and securing you pex tubing to. it is specifically made for use with pex tubing. I don't have a link for it. the one I've seen used was 2" thick with a green material applied to the knobs and insulation board. makes running the pex a lot faster.

check out and see if you have a plumbing supply company (not one for regular joes but the pros). in my area they typically perform radiant heating calculation and can let you know the size tubing and manifolds you'll need.

sorry wish I could remember the manufacturer's name.
http://www.crete-heat.com/
This sounds like what you mean. Expensive stuff but sure cuts down on labour time
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Old 10-29-2012, 10:51 AM   #6
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that's it!

provides your insulation so the heat in your slab does not go into the ground under the slab and makes it easy to lay down your pex.
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Old 10-29-2012, 12:35 PM   #7
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thanks for the replys guys, its just for my own house, so since im not going to be in a real big hurry, i think ill just lay down the 2" insulation fallowed by the rebar then just zip tie the tubes down on the rebar, save lots of coin that way...
is it possible to make your own manifold? i dont see why you would need a special plastic one when i could just run the 3/4" copper to and from the heater and then branch off the lines into copper manifolds into the zones needed...i think ill go that route since i think ill only need 2 runs of 200' (apparently 300 is max) i dont even see the point of putting in block valves in the supply to each zone since there to be opened when running anyways?
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