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silicontraption

Staple up vs. Warm Boards vs Thermal Track

contraption
15 years ago

Hi All,

We are doing a major home renovation - half new, half updated old construction. We are going with an underfloor radiant heating system.

We are trying to decide what to do about the radiant tubing. About 2/3 of our installation will be on a first floor, standard 2x10 framing, 16" OC, over an uninsulated crawlspace). We have left some existing walls left standing (two bathrooms), plus a few additional outside walls. We are also adding a second floor which will be all-new construction.

We plan to install Smith&Fong stranded Bamboo flooring over the heating system on both floors (though not really sure how).

We believe we have 4 basic options for routing the PEX:

1) Staple up under the existing subfloor

2) "Warm Boards" http://www.warmboard.com/

3) "Thermal Track" http://www.warmfloors.com/thermaltrack/

4) Gypcrete

We believe that #4 (Gypcrete) is technically the best solution, but we have ceiling-clearance issues in some spots, so the added thickness (3-4" we think) would likely present a significant problem.

We have been leaning toward #1 (Staple-up with heat deflectors + insulation) as that's been recommended by a number of people. However, we've heard of noise issues (metal expanding and contracting) and are concerned about the overall lower efficiency eating our heating dollars for the next 50 years.

Warm Boards seems to be better suited to new construction as the routing paths can't be tweaked much since they are standard boards.

The Thermal Track system (from Warm Floors here in the Bay Area) seems to be a "poor mans" Warm Board, but we really don't know much about it.

Are there any opinions or suggestions about what approach(es) make the most sense for a half-retrofit project?

Is a staple up system just asking for disappointment, or do they really work OK at the end of the day?

Does anyone have any experience with installing Bamboo flooring over any of these, good or bad?

Thanks,

Bruce

San Francisco Bay Area

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