Rapid Radiant VS Thermafloor VS Gyp Span

PG

Any thoughts on these products?

Which is lighter?

Which is better for infloor radiant?

Are there any differences?

Any other products out there that are better or just as good?

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PG

No oponions on this sub........

ject? I would be interested in weight differences. As well as do any of these have an advantage as far as even heat vs stripping?

Thx

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hr

What is

Rapid Radiant? Another gyp product?

Look at the thermal conductivity of the product to compare. I imagine all the radiant gyp products are similar, although not quite as good as regular concrete mix for heat transfer.

But the gyp products do bring enough other "good baggage" to make them ideal for thin radiant applications. Self leveling, sort of, easy to install, can be feathered to a very thin edge, quick drying, sound and fire proofing, smells good...

hot rod

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PG

why aren't they as good as rerular concrete?



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hr

I suspect gyp

has more trapped air space, no aggreate, and a softer product to bind the mix, and the sand in the mix is a poor cunductor. All these added together give it less thermal conductivity.

Most design info shows gyp with a 2" depth R-1.7, while with the tube at a 2" depth .4 r-value for concrete. These figures are from the RPA RadPad calculator.

Basically the concrete is a better conductor than gypsum.

Although no where near aluminum or copper

An aluminum covered product like WarmBoard, or transfer plates below the finished floor will be about the best transfer you can get.

Throw some copper tube, or gold or platinum tube in a WB or a transfer plate, and behold some powerful heat transfer.

You can look up all this conductivity info in pocket references or various websites.

The closer you get to perfect conductors the better and quicker the transfer, be it heat or electricity.

hot rod

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PG

Thanks

> has more trapped air space, no aggreate, and a

> softer product to bind the mix, and the sand in

> the mix is a poor cunductor. All these added

> together give it less thermal

> conductivity.

>

> Most design info shows gyp with

> a 2" depth R-1.7, while with the tube at a 2"

> depth .4 r-value for concrete. These figures are

> from the RPA RadPad calculator.

>

> Basically the

> concrete is a better conductor than

> gypsum.

>

> Although no where near aluminum or

> copper

>

> An aluminum covered product like

> WarmBoard, or transfer plates below the finished

> floor will be about the best transfer you can

> get.

>

> Throw some copper tube, or gold or

> platinum tube in a WB or a transfer plate, and

> behold some powerful heat transfer.

>

> You can

> look up all this conductivity info in pocket

> references or various websites.

>

> The closer you

> get to perfect conductors the better and quicker

> the transfer, be it heat or electricity.

>

> hot

> rod

>

> _A

> HREF="http://www.heatinghelp.com/getListed.cfm?id=

> 144&Step=30"_To Learn More About This

> Professional, Click Here to Visit Their Ad in

> "Find A Professional"_/A_





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Troy_3

Gypsum concrete

Rapid Radiant and Thermafloor are the same product in two different bags made by the same Maxxon co. Unless you hold my quote that says Rapid Radiant and I'll swear it is the best. Gypspan Radiant is made by Hacker ind.- haven't poured this product in years. I can tell you it was a much more touchy product to apply when I did pour it. Can't speak of todays product though. I'm sure if applied by a reputable applicator it works well. The other advantages of gypsum concrete are- being able to stay together at an 1-1/2" thick pour over a wood substrate. You wouldn't catch me pouring portland concrete at 1-1/2" thick in a wood structure with 1/2" pex tubing creating additional stresses heating and cooling and the wood floor flexing.

PG

Anyone know if the products have changed......

since Troy last worked with the Hacker produst? PS Thanks for the input Troy. Patrick

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