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Posted by marson on April 14, 2007, 7:40 am
> On Sat, 14 Apr 2007 00:54:42 -0500, kjpro wrote:
>
> >> Can anyone advise me on the installation of hydronic coils before a slab
> >> is poured ?
>
> >> We are building a new home and I have costed the Rehau 16mm PEX totalling
> >> $6,000 for 550 sqm. This is working on 5m per sqm equalling 2750m.
>
> >> On a sqm basis this is approx $11 however every quotation I have received
> >> is approx $50-$55 per sqm to supply & lay the pipe prior to having the
> >> slab poured.
>
> >> So it will cost me upwards of $21,450 for the installer to design the
> >> layout and attach the pipe to the mesh prior to the pour !
>
> >> As it cannot be rocket science and well worth the savings are there any
> >> DIY guides available for potential pitfalls and design etc.
>
> >> Thanks in advance...
>
> > Just remember, when you do it wrong...
>
> > IT WILL BE VERY EXPENSIVE TO REDO!!!!!!!!!!!
>
> Not WHEN but only IF
I looked on Amazon and there is at least one book on radiant floor
heat. Also, Fine Homebuilding or the Journal of Light Construction
might have articles on it. You're right, it isn't rocket science.
You will need to come up with a design, though this typically is
tubing run 12" oc and no loops over 300 feet. I think the reverse
spiral is the prefered layout. I prefer to staple the tubes to the
foam and put any reinforement over the tubes--this lessens the chance
of a tube floating up and later being hit by a drill or something.
Good Luck.
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