(Note: Dry Lok now offers a portland cement based solution as well). Super Thoroseal claims a 200 PSI waterproofing capability, nearly 10 times the standard waterproofing available from paint-based solutions like traditional Dry Lok. It cannot be applied to painted surfaces.
Super Thoroseal is suitable for a variety of waterproofing applications, including above and below grade concrete and masonry waterproofing. To bring you back up to speed, Super Thoroseal is a portland-cement based waterproofer that is sold in 35 lb., five gallon buckets at a variety of stores–most notably Home Depot, where we purchased it. When we ran that initial review, we promised a follow-on article with a review of Super Thoroseal’s performance, but like so many things, it fell off the plate.
ft., and SunnyDry Foundation Waterproofer to the other 500 sq. Two years ago, we waterproofed over 1000 square feet of cinder block wall in our mostly-underground basement.