Super Diamond Clear dries faster, provides a higher, longer lasting shine and costs more. Super Diamond Clear is our first choice unless the owner wants less shine. Both sealers offer high gloss, better coverage rates, and cost less than the solvent-based acrylics. Both can be used inside or outside, but require 24 hours between coats. Certivex is the better choice of the two for outside work.
Urethanes offer a step up in durability and scuff resistance.
MC-430 is a single component, aliphatic solvent urethane with superior gloss, abrasion resistance and a coverage rate of 400 sq. Excellent coverage rate, good scuff resistance and compatibility with Semco s PreStain make it a favorite when using the Semco coloring system. XC-400 is available in low and medium gloss. Both urethanes and epoxies provide superior chemical resistance, which is important in some commercial and industrial applications. But one possible downside is the transmission of vapor through the slab, which can result in blushing or delaminating.