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Fri, May 27, 11 at 15:46
| Everything I read says you should always put a vapor barrier/retarder under a slab on grade. Whats the harm?
My contractor is arguing the point. He thinks the slab will "float" or that the trapped water will be bad. I disagree, but how hard should I fight it? Its a slab on grade for the garage, living space above that. I may just put 6 mil down myself this weekedn in prep or the pour. |
Follow-Up Postings:
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| Not needed if the space above the slab is unconditioned and you do not care about moisture levels. Sidewalks are directly on grade with no barrier. I would put down the barrier to make the garage dryer and more comfortable. |
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- Posted by Renovator8 (My Page) on Fri, May 27, 11 at 18:18
| The contractor just doesn't want to have to remove excessive bleed water. Use a stiff, low water mix. |
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