Installing radiant heating in the rain

11 years ago

Hi, I'm new to this forum but have been active on others over the past several years (on my second remodel/build).

We're installing radiant heating on existing concrete slab subfloor by laying membrane over the existing slab, insulation on top of that, pipes attached to the insulation and finished with a thin layer of gypcrete over the top. Finish floor will be tile.

After months of drought, the heavens opened and I found them laying the membrane on the wet concrete subfloor (roof is being finished this week of course after baking in the sun for 3+ months). Some areas of concrete are puddling an inch deep.

Contractor said that radiant floor guy says the wet conditions are fine as concrete is full of water anyway. They'll just avoid the puddles until they're dried out a bit.

Any thoughts? Should I be worried?

-Gail

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Comment (1)

fsq4cw
11 years ago
Maybe you can tell us how this turned out.

A few years ago I took a course in renovating heritage homes. A different professional, usually a professional engineer in that field, gave every lecture. A professor that was such a professional engineer with a specialty in cement and concrete gave the lecture on foundations, slabs and footings.

When discussing the strength of cement he mentioned that the underground subway in our city that runs on rubber tires and cement tracks has those tracks cured completely under water for the expressed purpose of adding strength.

My sister and brother-in-law recently had the cement docks in their rather sizable boathouse completely rebuilt with the new cement being poured directly into the water. It is also common to cover cement slabs with burlap and wet them down for a few days as they cure.

I canÃ¢ÂÂt say for sure because this is not my specialty but it may be completely fine.

DonÃ¢ÂÂt know if this is helpful at allÃ¢ÂÂ¦

SR
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