10/07/2026
The most often asked question I get, besides pricing, is "What material do you use to raise concrete?" Great question. I don't use polyurethane foam BECAUSE it has a compression strength of 60 to 80 psi, which is it's ability to resist being crushed by the weight of concrete on top of it. As we all know very well, concrete is extremely heavy. I use Type S structural mortar, mixed on sight so you can actually see it done. Type S mortar has a minimum compression strength of 1800 psi, but in reality, I mix it to a strength of around 2000 to 2200 psi. Which material do you think is going to resist settling concrete better in the future? Not to mention, the "foam" is water based and bio-degradable.....so they try to play it off as "green." Well, my favorite customer is an educated one, so give us a call for your free estimate if you want your raising project to last you a very long time. (815)459-6346.