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Epoxy.com Product #692

Flexible Methyl Methacrylate (MMA) Flooring Mortar System

For use in Epoxy.com Methyl Methacrylate (MMA) Flooring, Decking & Bridge Deck Systems


Epoxy.com Product #692 Flexible Methyl Methacrylate (MMA) Flooring, Decking Bridge  Mortar Resin is a higher viscosity, 100% reactive, flexible methyl Methacrylate resin used as a crack isolation or waterproofing membrane under Epoxy.com MMA Systems. Epoxy.com Product #692 Flexible Methyl Methacrylate (MMA) resists cracking caused by horizontal substrate movement providing a crack resistant, resilient surface. Epoxy.com Product #692 Flexible Methyl Methacrylate (MMA) offers stress relieving properties for floor slabs showing movement and/or vibration.

Excellent for use as an intermediate layer in:

  • Loading docks
  • ramps
  • equipment rooms
  • large animal rooms
  • activity rooms
  • automotive and tooling industry
  • freezers
  • coolers
  • bridge decks
  • pedestrian walkways
  • parking garages
  • ship decks
  • joint repair
  • food industry
  • dairies
  • beverage industry
  • numerous other applications.


  • Crack resistant flexibility Elongation of 300%.
  • Reduces noise created by mechanical vibrations.
  • May be applied in thickness of 1/8"-¼ ".


  • For improved intermediate adhesion, broadcast Epoxy.com Product #692 Flexible Methyl Methacrylate (MMA)  with 16-30 mesh silica sand.
  • Concrete must be dry, free of dirt, waxes, curing agents and other foreign materials.
  • Do not store outside in direct sunlight , storage temperature must be < 80°F.
  • On or below grade installation must have an efficient vapor barrier under the slab (minimum 10-15 mil).
  • Moisture vapor transmission must be less than 3 lbs per ASTM-F-1869 and less than 80% RH per
    ASTM F-2170.


Epoxy.com Product #692 Flexible Methyl Methacrylate (MMA) Flooring, Decking Bridge  Mortar Resin is a 100% reactive methyl methacrylate resin.


Epoxy.com Product #692 Flexible Methyl Methacrylate (MMA) is supplied clear (slight haze). Color packs are available for selected colors. Color pack mix ratio is 1 quart pigment per 5 gallons resin. See Epoxy.com MMA color card.


Surface preparation is the most critical portion of any successful resinous flooring system. All substrates must be prepared as indicated on the Epoxy.com Surface Preparation Guide.


Epoxy.com Product #692 Flexible Methyl Methacrylate (MMA) is typically used in conjunction with fillers and fine aggregate and requires the addition of Epoxy.com Product #695 MMA hardener to start the hardening process. The amount of hardener must be adjusted to the respective surface temperature (see table). At temperatures below 40°F, Accelerator 101 must be used in addition to the amount of hardener used at the 40°F level (about ½ oz by vol./gal. @ 32°F up to 2.0 oz by vol./gal. @ -20°F).

Typical Slurry/Topping Formula

MaterialWeight Volume
Epoxy.com Product #692 8.4 lbs. 1.0 gal.
Epoxy.com Product #78 Leveling Filler 20 lbs. 1.8 gal.
Pigment Pack N/A 6.4 Vol. oz.
Epoxy.com Product #695 MMA Hardener Follow chart Follow Chart

Add hardener to the clear resin and blend; add dry powders and mix thoroughly with propeller mixer. Blend pigment and mix for 1-2 minutes until no lumps are present. Apply mix to the primed surface using a gauge rake or notched trowel. The above mixture will yield approximately 1.8 gal. of slurry. Coverage is:

3/32 inch30 sq ft
1/8 inch22-23 sq ft
3/16 inch15.0 sq ft
1/4 inch11.3 sq ft

The fresh slurry coat must be broadcast to excess with a wearing coarse of aggregate. Rates will vary from 0.25-1.25#/sq ft depending on type and size of aggregate. It is recommended to broadcast 16-30 mesh aggregate. Do not use broadcast aggregate smaller than 30 mesh. Aggregate may be natural or colored quartz, sand, aluminum oxide, emery, etc.

Epoxy.com Product #692  systems must be top coated, protected, or sealed with Epoxy.com Product #693 Methyl Methacrylate (MMA) Top Coating. These can be either pigmented or non-pigmented.

Pot Life and Hardening/Temperature

Temp. (°F) of
Resin, Air & Floor

Hardener by Vol.(oz.)
Based on Gallon
of #692 MMA Resin

Pot Life (min.)


+41 8.0 Approx. 25 Approx. 70
+50 7.0 Approx. 25 Approx. 65
+68 5 Approx. 20 Approx. 50
+70 5 Approx. 20 Approx. 45
Below 41°F Epoxy.com Product # 696 Accelerator must be used in addition to the amount of hardener used at the 41°F level (about ½ oz by vol./gal. @ 32°F up to 2.0 oz by vol./gal. @ -20°F).


Percent Solids 100%
Working Life, 50° - 70°20-25 min.
Recoat Time 55-75 Min.
Viscosity, cps 1,100-1,200 cps
Weight per Gallon 8.3 lbs
Compressive Strength 2,500-3,000 psi
Tensile Strength 75-80 psi
Elongation at Break 300%


Clean tools and equipment with lacquer thinner or MEK. Consult Material Safety Data Sheet for safety and health precautions.


Store in a cool and dry place, below 80°F, out of direct sunlight. Do not store near open flame or food. Shelf life is 4-6 months in the original unopened containers.


Additives and fillers can separate with storage. Stir thoroughly before using or removing from drum.

Adequate cross ventilation should be provided. Good ventilation during the processing ensures a good cross linking and hardening. Read, understand and follow Material Safety Data Sheets and Application Instructions prior to use.

Use only as directed. If substrate and/or material temperature is above 90°F, DO NOT apply material.

For industrial Use only.

Keep out of reach of children.

Proper mixing and installation is critical to the optimal success of all products.  See Installation Tips, Techdata, & MSDS for more details on our products.  Be sure to contact us with any questions and/or concerns that you have.

For more information please contact:

A Division of Epoxy Systems, Inc
A Vermont Corporation

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                        Technical Support
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                         Debby Lambert, CEO, and CFO

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