Moisture Blocker (8127)

Moisture Blocker (8127) is to be installed as a neat coating directly to properly prepared concrete substrates where moisture vapor drive is suspected or has been identified through testing procedures. It deeply penetrates and bonds into concrete slabs to help lock down moisture and prevent moisture vapor drive from causing blistering or delamination in the floor finish. This product can also be used to reduce MVER to levels that allow other floor finishes such as VCT, PVC sheet-goods, carpet tiles, rubber matting, etc. to be installed.


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Moisture Blocker (8127) is a 100% solids, two-component, high-performance epoxy primer uniquely formulated to effectively reduce moisture vapor emission rates (MVER) through a concrete slab to levels that allow subsequent installation of non-permeable floor finishes. When properly applied to the top side of a concrete slab, Moisture Blocker achieves a CLASS I VAPOR RETARDER rating of 0.1 PERM OR LESS per ASTM E96-14. This product contains zero VOC and meets all USDA/FDA guidelines for use in federally inspected facilities.


Moisture Barrier CAN BE APPLIED TO PROPERLY PREPARED CONCRETE WITH READINGS OF UP TO 99% RH per ASTM F2170. Contact Superior for MVER questions when using ASTM 1869.



  • 100% solids
  • Cost effective
  • Excellent adhesion
  • No VOC, no solvent odor
  • Easy working, medium viscosity formula
  • Independently lab tested and certified by CTL to achieve stated CLASS 1 PERM Rating when used as directed



  • Recommended to be applied in two successive applications of 150 – 200 square feet per gallon per coat to create a fully sealed, pin-hole free finish with a CLASS 1 PERMEABLITY RATING
  • One 16 mil application of Moisture Blocker is possible, but the finish must be PIN-HOLE FREE to provide an appropriate level of impermeability


8127 TDS


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