Hello! I have absolutely no background in the sciences / chemistry, so I thought maybe you folks could help dumb it down for me. I am renovating an old house and just got new concrete poured in the basement. I want to polish the floors and leave them uncovered for environmental and health purposes. I don’t want any vinyl or other unnecessary finishes.
The contractor who does the diamond polishing says he needs to add a densifier, which is a lithium silicate nano particle based product.
The manufacturer indicates that the product once cured has the PH level of 11-12 and is highly anti bacterial naturally because of this. Here are the exact words from one of their literature materials:
“The technology used to make “said product” makes it alkaline by nature. The typical pH of our 100% mineral coating is 11.5 to 12.
Even when it is applied on the floor for long-time, the pH of the dried surface will remain high. Once it is on contact with water or humidity it will produce OH- ions. These in turn will affect the growth of any microorganism preventing on the floor surface.
One of the direct consequences of that is the odor control property of “said product”. It can also reduce chances of cross contamination in areas like clinics, Hospitals, Schools and airports.
Since the “said product” coating is 100% mineral and has a crystalline structure. When cured, the molecular arrangement of billions of pointy crystals forms a micro sand paper like surface (fig.-1). These formed clear and transparent crystals reflect 100% of the light generating shine to the floor without absorbency.“
I have two concerns which I am hoping a chemist can address:
1. Does the fact that this product contains nano particle lithium silicate create any health issues after the product has cured? For example, walking on the flooring, a baby crawling on it in the long term, any dust particles arising from the polished concrete floor, etc (inhalation / skin contact)?
2. What does it mean when the company indicates the PH level is 11-12? What does this mean for residential safety of occupants who spend many hours at home and on or near the finished floor that contains this product, albeit cured? Are there any health concerns here due to the chemical nature?
Thanks everyone. Really hoping to get some insight. I can share the product name and SDS I just don’t know if that’s permitted here.