Vapor Shield 601

TERRAZZCO Vapor Shield (MVS) 601

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


TERRAZZCO® Vapor Shield MVS 601 is a 100% Solids, two component epoxy system designed to seal concrete and reduce moisture vapor transmission through a slab having relative humidity levels between 75% and 95% as measured by ASTM F-2170.

Document Download
3-Part Spec for Thin-Set Epoxy Terrazzo #096623 (PDF)
3-Part Spec for Thin-Set Epoxy Terrazzo #096623 (MS Word Doc)
Product Data – Vapor Shield MVS 601
TERRAZZCO Architectural Binder

Typical Uses of Vapor Shield (MVS) 601

TERRAZZCO® Vapor Shield MVS 601 can be used in industrial, commercial, retail, institutional facilities and health care facilities.

Advantages of MVS 601

  • Retards moisture vapor transmission rate through concrete
  • Does not affect surface profile of treated concrete
  • Gives excellent bond to properly prepared concrete
  • Packaged and premeasured for easy mixing at work sites
  • Manufactured and supplied from Southeast United States

Application & Technical Data

Working Data

Working (Pot) Life: 30 minutes

Re-Coat Time: 8-10 hours @ 75°F

Full Set Time: 12-24 hours

Full Cure Time: 5-7 days

Mix Ratio

Add TERRAZZCO® Vapor Shield MVS 601 hardener part B to TERRAZZCO® Vapor Sheild MVS 601 part A,.


The thickness of 8-12 mils at 300-400 sq. ft per unit.

Mixing Instruction

1. Premix TERRAZZCO® Vapor Shield MVS 601 resin part Ausing a low speed drill and jiffy blade for two minutes at medium speed.


2. Add TERRAZZCO® Vapor Shield MVS 601 hardener part B to TERRAZZCO® Vapor Sheild MVS 601 part A. Resin and hardener are supplied packaged in pre-measured quantities so that the entire contents of hardener part B is poured into the container of resin part A and mixed. Mix using the drill and jiffy blade for two to three minutes at medium speed.


3. Pour the mixed material onto the working area and spread using a squeegee followed by a 1/4 in. nap roller to achieve a thickness of 8 – 12 mils (300 – 400 sq. ft. per unit). Apply more material to areas showing greater penetration and soaking into the substrate.

 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


TERRAZZCO® MVS 601 Resin part A is packaged in 3.5 gallon pails, and TERRAZZCO® MVS 601 Hardener part B is packaged in 1 gallon pails.

Self Life: Material has a one-year shelf life when stored in a temperature and humidity controlled environment.


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.

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.