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RadPad logo Radiant Floor Tube Size and Spacing Calculator

   

Scroll down the chart below to select a tube size:

TUBE SELECTION CHART
Nominal ID: tube sizes are stated in the approximate inside diameter of the tube
Typical Use 3/8" 1/2" 5/8" 3/4"
residential yes yes maybe no
light commercial maybe yes yes yes
commercial/industrial no maybe yes yes
thin gypsum on wood yes yes maybe no
light concrete on wood yes yes maybe no
concrete slab maybe yes yes yes
large concrete slab no no maybe yes
prefab floor panels yes yes maybe no
joist space yes yes maybe no
close tube spacing yes yes no no
wide tube spacing no maybe yes yes

yes = recommended     maybe = use caution    no = not recommended

The RadPad System Sizer is an estimating tool. Drake Internet Publishing does not (a) make any warranty, expressed or implied, with respect to the use of any information, apparatus, method, or process disclosed on this website or that such use may not infringe on the privately owned rights; or (b) assume any liability with respect to the use of, or for damages resulting from the use of, any information, apparatus, method or process disclosed on this website.

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