Radiant: Has anyone tried this

Ted_9

Light weight concrete, 5/16 tubing(Viega pex) stapled down to the sub floor with a 1/2 inch pour on the sub floor. Also will be using sleepers for the finish cork flooring. 6" maybe 5" on center tubing spacing.

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By lightweight

do you mean a gyp type product? Check with the manufactures, but I think they want at least a 1" pour over the top of the tube?

Maybe the newer high psi versions gyps could pour that thin?

I have done regular pea gravel redi mix as thin as 1-1/2 inch, but it does crack a lot.

Dan Peel, may he rest in piece, would use a thin, dry pack tile setting mixture as thin as 1".

The key to any thin pour is a very stable subfloor and joist system, to prevent flexing of the floor assembly and potential crack and shifting of the "poured" material.

hot rod



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Ted_9

Thanks Hot rod. My hope is that the customer will spend a few and go with the climate Panels.

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The cork

I have been around is generally in a tile type product. So check into this first. If it is a cork tile you will need an underlayment plywood or something.

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Weezbo

done it and used 5/8th \" pour....

however it is heavily doseaged with acrylic and it is in bedrooms that have very little pointed weight type furniture within the room...so far so good.:)it isnt like recommended procedure. however, it works fine...

Al Corelli - Agix Associates

Have done many bathrooms with 3/8ths Wirsbo Pex on top of tar papered/ wire meshed subfloor covered with highly acrylic'ed concrete base 3/4" to 1" thick.

Haven't had a crack yet. Been doing it for years. Tested it out on my Mom's house years ago and never had so much as a tile bonding issue. I do go thicker with kitchen floors.