Experience with colloidal silica to reduce permeability?

[apsix]

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

 

[PMR06]

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.

 

[apsix]

Thanks for that, it sounds positive.

John