Hello all, some of you may remember the trials I went through last winter to investigate and fix a problem with air/moisture where part of my basement ceiling is actually the underside of the top step to my front door. This step is mostly exposed to the elements, and is only partially covered by the roof. Therefore, every time it rains (even a gentle rain), the front step gets wet, and has the potential to let a small amount of water into the basement. I've since taken some steps to help channel some of the rain water off the front step, and have done a good job of sealing the joint between the siding and the step...the seam where most of the water would travel down through to the basement. But I'd also like to top-coat the concrete for an even better resistance to water. I just looked at a product called "Sani-Tred" http://www.sanitred.com/ and it looks like just the ticket. But it's expensive! Any alternatives out there? I'm looking at about 20 sq ft of concrete at least. Thank you!