Dear Mark:

I have been dealing with a firm in Vancouver, British Columbia, Canada,
called Insulmastic (604) 522-2811 - that offers a product called
"Aqua-Proof."  This is a paint-on sealer that penetrates the concrete and
precipitates silica crystals that are supposed to form a barrier against
water migrating up from below the slab.  It will also seal the concrete
surface, thereby inhibiting the usual dust a cement floor continues to give off.

I am just in the process of testinggg this product.  I know it won't do any
harm, and will at least provide a top seal.  It looks like approx. $16
Canadian for 4 litres.

Derryll

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Derryll White
Curator
Fort Steele Heritage Town
>Fort Steele, British Columbia  VOB 1NO
>
email: [log in to unmask]
homepage: http://www.islandnet.com/~bcma/museums/fsht/intro.html

My question to the members of the list is: Will concrete floors (the
>supposed moisture they absorb) pose a threat to books, works on paper or
>even paintings if those items are stored up on the shelves? Are there any
>special steps that would need to be taken? Do we need to cover the floors?--
>Again, I want to mention that the space is all on the ground floor, i.e.
>above grade, but the concrete is (I assume) laid over the ground. Is the
>moisture absorbed from the ground below, or the air above, the concrete
>floor? Or have I been altogether misinformed about concrete floors absorbing
>moisture?
>
>Mark
>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>
>Mark Ast, Ph.D.
>Curator
>Museum & Library of Barbizon
>        & Pre-Impressionist Art
>The Schlesinger Foundation
>email:  Mark Ast <[log in to unmask]>
>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>
>