Mira/Waffle Drain and Radon sealing

Old 11-25-14, 01:25 PM
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Mira/Waffle Drain and Radon sealing

Does anyone have experience on how to seal the Mira drain which comes up about 4" on the basement cinder block wall? I need to add a radon abatement system and need to seal air leakage. Thinking there must be plastic cap molding or something, but can't find anything...
Old 11-28-14, 04:53 AM
Join Date: Dec 2013
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1st make certain there are no wall leaks which would run down the wall & enter your sub-floor system behind the miradrain if nothing, use siliconized caulk - that's what we do if you can't live w/that look, suppose you could fasten some z-channel over the miradrain

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