Did you also use the flagstone on the porch? Is it sealed? We are doing this but worried because there is storage beneath it.

Yes, the flagstone is on the porch. The important factor for your porch is to waterproof before you do your flagstone installation. A sealer on the top will not be enough to protect the area below.

Thanks for your reply. We were going to put schluter down over pressure treated plywood first. Everyone is telling us not to put bluestone here but we have no other choice as wood will not work. Thanks.

Just be sure there is a slight slope in any situation to allow for water to run away from your home.

Yes we have a pitch. Will schluter work as the waterproofing? Thx