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Old 12-18-2009, 05:53 PM   #16
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New Basement with Moisture Problems from Slab


Thanks For all the Replies - I tried to Paint the Floor already but its just chips Off or bubbles on the Concrete - So I think Pouring a new slab over the Poly I have laid on the floor right now would be the best to let me use my basment and not musty smelling hole - the Conrete Would jut protect the polly from getting ripped. If I did this fix would I still be able to sell my house one day?

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Old 12-18-2009, 08:10 PM   #17
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Right now I have A 6mil Polly Covering 97% of the Slab - I had to lift up all the inside walls and slip 6mill poly under them and tape all the seams together and I just ran the poly up to the 4 foot wood framed basment wall that covers the the concrete 4 foot wall, and tape it to the poly on the wall - So all my Inside wall Plates 2x6 or 2x4 will be embedded in the slab - I did cut all the dry wall up 2 1/2inchs up - so I am setup for a slab - what I have done Has reduced the humidity - So protecting the Polly with a slab would be good - what do you think about the concrete around the inside walls and going up the framed 4 foot walls covering the outside concrete 4 foot walls?

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Old 12-19-2009, 09:40 AM   #18
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New Basement with Moisture Problems from Slab


If you ran the poly up the inside of your exterior walls where do you think all the moisture is going to go now
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Old 12-20-2009, 11:03 AM   #19
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New Basement with Moisture Problems from Slab


Quote:
If you don't like the color, you could paint it.
Paint an already moisture-laden concrete floor?

No paint will stay. No sealer will stay. No coating liquid applied will stay. Applying poly first then adding concrtete on top will only insure that the top added concrete will be dry not the underneath concrete that will still be musty and will be releasing moisture up the walls around the perimeter.
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Old 12-20-2009, 12:45 PM   #20
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New Basement with Moisture Problems from Slab


there are some penetrating epoxies specifically made for resolving this problem,,, since you're 1 of carlisle's countrymen, i'll let him explain how they work & how they're applied,,, in the meantime, have a sump & pump install'd to treat the ' false water table ' you're experiencing,,, ANY home will have a water issue since rain always takes the path of least resistance - ie, into disturb'd soil next to your foundation walls which has less compaction than surrounding original ground.

you're not the only 1 to measure & cut once but most learn soon you may be in the latter group
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Old 12-20-2009, 02:29 PM   #21
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New Basement with Moisture Problems from Slab


I do respect all the opinions that have been posted, and I can tell you that I do not know of a coating or paint that will stick, and typical surface sealers will not stick either, that is why I suggested Potassium Silicate sealers. Potassium Silicate sealers are penetrating impregnators that move inside the concrete structure and react with alkali in the substrate and form silica hydrogel which then hardens to form a liquid glass type product that becomes a monolithic part of the concrete structure and therefore remains as a moisture blocker permanently and allows the surface to be painted, coated, tiled, or carpeted safely. The technology was originally developed by NASA and is widely used INSTEAD OF a typical vapor barrier, it will also work on the walls. As was said by itsreallyconc water will take the path of least resisitance, and this technology will make the water take another path. At this stage it is the safest, and most cost effective option to try. There are some manufacturers that will send you a sample to try and see if it will work on a small section. Tests on some of these products have found that the deep seal provided by these products have reduced moisture and hydrostatic pressure in concrete slabs from 18 lbs per 100 sqft per 24 hours down to less that 2 lbs in a period of 72-96 hours. I have a great deal of experience with these products, and moisture transfer, trust me, with the right product it is worth trying.
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Old 12-21-2009, 04:13 AM   #22
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New Basement with Moisture Problems from Slab


eddie, it helps if/when you compare/consider your very fine home's bsmt as/to a ship's hull below the waterline,,, all ships have bilge pumps but you need a *&%@%*)*$@ SUMP pump !

potassium silicate, huh ? ? ? got any suppliers to share ? how would that compare w/sub-slab grouting for end effect ?
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Old 12-21-2009, 07:11 AM   #23
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New Basement with Moisture Problems from Slab


If there are voids under the slab I would still suggest drilling and sub slab grouting. I have a conflict in naming products because I have an interest in one of them. I guess I could give you a few that I know work well and you can research on your own. Its is a slippery slope so I want to make sure to say these three products are nearly equal in my opinion.
Foxfire P1007
Chemical Products CP1007
Deep Seal
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Old 12-21-2009, 07:30 AM   #24
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THAT explains everything!
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Old 12-24-2009, 01:09 AM   #25
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Thanks - Would XYPEX Work?

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Old 12-24-2009, 08:38 AM   #26
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I do not have any personal experience with xypex but I have heard mixed reviews but I would still say it is worth trying
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Old 12-24-2009, 09:43 PM   #27
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I called Xypex Company And they Told me it work not work well for my problem - So whats so differnet about Foxfire P1007
Chemical Products CP1007
Deep Seal?
IT Mightbe one of those times where the proper cure is worse than the illness - to take the Slab out and Put a VB 6 mil polly down and repour, what do you think?

Last edited by fasteddie; 12-24-2009 at 09:45 PM.
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Old 12-27-2009, 01:51 PM   #28
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New Basement with Moisture Problems from Slab


is it a rainy location.. i have done french drains and resloping of the area around houses for a few years.. i could help out with that if u think it might help.
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Old 12-27-2009, 09:09 PM   #29
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New Basement with Moisture Problems from Slab


The basics are , Make sure dirt is sloped away from the building , Gutters are directed away,, And ground sloped at the downspouts , Then find the builing code , And then IF the code says VB , And it's not installed you probably have an Issue with the contractor ,IF Its below grade and the water table is High You may be stuck with this , I have investigated concrete sealing , You would need a contractor that garuntee's his work , Thats is a specialty , Or just go try a sealing product and try it , Or put a different type of flooring on it , BUT do a Calcium chloride test and see how much moisture is really comeing out , It may be too wet to do much with , But there are products that say ... They cut the moisture emmission in half ,Good luck Moisture in concrete IS a problem tacomahardwoodfloors.com
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Old 12-30-2009, 06:13 PM   #30
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New Basement with Moisture Problems from Slab


What should it cost to Jack Hammer out a 4" Slab of a 1250sq foot home and Repour with Polly under slab and Of Course install a drain tile?

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