concrete sealant for stoop?

One more house problem. Our stoop has steps with a metal frame and concrete on the actual steps. The prior owner of 50 years each year put another paint coat on — so we finally this year blasted off all of the paint and concreate and had new concrete put in. Now we are getting some moisture under the stoop — which folks explain as caused by a poor concrete job as there’s an insufficient liner under the concrete and of course concrete is pourous. Someone suggested that I paint a sealant on top and that will keep the water out. Does that make sense and does anyone have suggestions of such a sealant?

Many thanks.

By kenw |