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pouring a slab over radiant heating

pouring a slab over radiant heating

pouring a slab over radiant heating

(OP)
A slab will be poured soon in the basement of our two story addition. We have 2" foam insulation under and at edges,and vapor barrier. Then a steel grid is laid to which the radiant heat pipe is attached. We want a nice smooth finish. Any suggestions and/ or cautions. The structure is enclosed.
Thanks

RE: pouring a slab over radiant heating

A few suggestions:

1.  Be sure the subgrade has been properly compacted

2.  Pressure test the heat piping BEFORE you concrete.

3.  Be sure the heat pipe is acceptable for use in a concrete slab.  I know of project that used black iron piping that eventually started leaking after reacting in the concrete.  They never could find all the leaks.

4.  Be sure to provide a method, other than saw cutting, to provide crack control joints in the slab.

Good luck!

RE: pouring a slab over radiant heating

Well we are in the process of generating a budget proposal for an aircraft hanger which is approximately 21K sf and the owner believes he wants a hydronic floor heating system.  If we do not saw joints, then what should I do?  We usually green cut the slab at approximately 12'6" on centers.  If we use expansion joints, then how will that affect the hydronic tubes? The building is located in Mississippi

RE: pouring a slab over radiant heating

Supercreel (Is that a ref. to your flyfishing ability?)

A few thoughts:

1.  For the joints you could use the PVC "zip-strips".

2.  I do think you are better of using a SoftCut saw.  The main thing is to KNOW where the pipes are, make sure that they are held below the level of the saw cut.

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