Hello Frederick. Is this a statement or a question? We are happy to answer any questions. Just to remind you, All Garage Floors is an informational website only. We are here to provide information and unbiased reviews on garage flooring products and coatings that you can’t find anywhere else. We do not sell products on our site or do installations. However, we can recommend vendors for purchase if you plan on doing it yourself.

Hi Taylor and great question! Yes, many polyurethanes still do not bond well to bare concrete. However, newer formulations have come about since we first wrote this article over 9 years ago. The ones you mention are newer single-part tinted polyurethanes that are moisture cured. They are not intended for coverage over or under epoxy. They have been developed and designed to work on their own or as a system together. They are not intended to bond chemically to epoxy. However, as with most coating, if you rough up the epoxy surface after 24 hours, you can apply them to the epoxy.

Hi Frank. You need to wait a minimum of 30 days for a standard 4″ concrete slab to cure after a new pour.