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Experience with colloidal silica to reduce permeability?

Experience with colloidal silica to reduce permeability?

Experience with colloidal silica to reduce permeability?

(OP)
I'm considering using colloidal silica applied as a curing agent to reduce the potential for vapour transmission through a slab on grade.

Does anyone have good or bad experiences with this product?

John

RE: Experience with colloidal silica to reduce permeability?

I've never used these products on any of my designs, but I did use one on my existing basement slab.  Apparently no vapor barrier was put down, or it was not working.  My wife is pregnant and we wanted a sealer product with minimal VOC's.  FWIW, it went on very easily and it has stopped the moisture that we noticed would collect under boxes placed on the slab.

RE: Experience with colloidal silica to reduce permeability?

(OP)
Thanks for that, it sounds positive.

John

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