MMS 950

TERRAZZCO Moisture Mitigation System MMS 950

Moisture-resistant terrazzo resin for concrete exceeding relative humidity of 75-95%


TERRAZZCO Moisture Mitigation System MMS 950 is a VOC free 2 component epoxy resin system cured with an amine curing agent and applied on the top surface of concrete slabs providing a retarder against moisture vapor transmission for slabs having a relative humidity of 75-95%. The product is mixed and applied onto the top surface of the concrete soaking into and sealing the pored while it builds a thin film layer approximately 6 mils on the surface. MMS 950 yields approximately 300 – 400 square feet per mixed unit. Coverage is based on the porosity of the concrete and may require a second application for very porous surfaces.

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3-Part Guide Specification for Thin-Set Epoxy Terrazzo #096623 (PDF)
3-Part Guide Specification for Thin-Set Epoxy Terrazzo #096623 (MS Word Doc)
Product Data – MMS 950
TERRAZZCO Architectural Binder

Typical Uses of MMS 950

MMS 950 is used to mitigate moisture vapor transmission through concrete slabs having 75-95% relative humidity when tested according to ASTM F2170. See the application section below for more information.

Advantages of MMS 950

  • VOC free for a healthier environment
  • Eco-friendly contributing to LEED® credits
  • Easy application for tight construction schedules
  • Packaged and premeasured for easy mixing at worksites
  • Manufactured and supplied from Southeast United States

Application & Technical Data

Working Data

Working (Pot) Life: 30 minutes

Re-Coat Time: 5-6 hours @ 75°F

Full Cure Time: 7 days

Mix Ratio

Pour TERRAZZCO Moisture Mitigation System MMS 950 Part A resin (3.5 gallons premeasured) with Part B hardener (1 gallon premeasured).


MMS 950 yields approximately 300-400 square feet per mixed unit. This yield comprises one coat but is based on the porosity of the concrete and may require a second coat for very porous surfaces.

Mixing Instructions

1. Pour the pre-measured MMS 950 hardener part B into premeasured MMS 950 part A and mix thoroughly for two to three minutes using a drill equipped with a jiffy blade.


2. Add 1.25 L (0.33 gal) water and mix for two minutes.


3. Add another 1.25 L (0.33 gal) water and mix for two minutes.


4. Add another 1.25 L (0.33 gal) water and mix for two minutes.


5. Finish adding another 1.25 L (0.33 gal) water and mix for two minutes.


6. Once the mixture has been thoroughly mixed, the product may be applied by roller, squeegee, or brush. Apply evenly with no puddles, making sure of uniform coverage. Coverage will vary depending upon the porosity of the substrate. Multiple coats may be necessary for very porous surfaces. Allow curing for 5-6 hours.

 Documentation & Product Details

Epoxy Terrazzo System

Browse our entire selection of epoxy resin systems. For more information, click the product name.

  • MMS 950 is required when relative humidity (RH) within the concrete substrate exceeds 75% when tested with in-situ probes.  MMS 950 should be applied to cracks prior to those cracks being filled with rigid epoxy.


  • Floor Aid Flexible Membrane 528 should be used to treat all cracks, control joints & cold pour joints in the substrate. (Do not fill cracks with Flexible Membrane 528.  Rigid epoxy such as  Groutless EZPour Epoxy 158 or Leveling Fill Epoxy 162 should be used)


  • Leveling Fill Epoxy 162 may be required to fill any cracks, voids and/or if leveling is needed.

Packaging Details

Moisture Mitigation System


TERRAZZCO® MMS 950 is packaged for convenient mixing at the worksite. Part A resin is premeasured in 3.5-gallon pail. Part B hardener is premeasured in a 1-gallon can.

Self Life:  Material has a one-year shelf life from the date of manufacture when stored at 55°F to 90°F and in its original container.


Storage Conditions: Materials should be stored in a temperature and humidity-controlled environment and out of direct sunlight. The part B hardener is susceptible to freezing. Keep resins and hardeners separated from each other until ready for use. Materials should be kept away from sources of ignition.

Try our Green Version

Discover TERRAZZCO Green Terrazzo System. Our Moisture Mitigation System 950G is crafted from renewable, non-Red Listed ingredients.


Together with Groutless® EZPour Epoxy 158G, Moisture Mitigation System 950G effectively addresses moisture concerns, ensuring a long-lasting and environmentally responsible flooring solution.

Related Products

TERRAZZCO EZPour Epoxy 158 Terrazzo Product

Groutless® EZPour Epoxy 158


A pigmented, 100% solid (VOC free), 2-part epoxy resin system. Combined with aggregates, it yields a decorative and durable terrazzo floor.

TERRAZZCO Flexible Membrane 528

Flexible Membrane 528


A two-component epoxy system designed to assist in the prevention of substrate cracks in an epoxy terrazzo floor.

TERRAZZCO Leveling Fill Epoxy 162

Leveling Fill Epoxy


TERRAZZCO Leveling Fill Epoxy is a two-component epoxy resin system applied by trowel to the desired thickness.

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