Solvent based products are generally  through the to penetrate better which would help with both life and foreign contaminant resistance. However, because the limestone is probably fairly porous, a good quality water-based should work well too.

Just remember, in that environment, it will probably have to be deep cleaned and re-impregnated every 12-18 months for the best protection. 

Im not a fan of sealing exterior stone. Ive seen too many problems, especially limestone. Your better to just give them a maintenance plan.

On Tue, Jun 19, 2018 at 12:11 PM, <csantospago@gmail.com> wrote:

Hello partners,

I am looking for some advice on cleaning and sealing the textured limestone floor. Part of it is inside of a pool house and also around the pool. There is some staining going on that I will try removing first and then give it a good cleaning with my floor machine and extractor.
I keep hearing stories about whether or not to seal limestone that is outside. I was thinking of a solvent-based impregnator.
Any thoughts?

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