Methyl Methacrylate (MMA) Flexible Membrane System

October 7, 2010 Product #692

Flexible Methyl Methacrylate (MMA) Flooring Mortar System

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

Perfect for outdoor and cold weather installation

DESCRIPTION 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 MMA Systems. Product #692 Flexible
Methyl Methacrylate (MMA) resists cracking caused by horizontal substrate movement providing a crack resistant, resilient surface. Product #692 Flexible Methyl Methacrylate (MMA) offers stress relieving properties for floor slabs showing movement and/or

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 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.

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

COLOR SELECTION 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 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 Surface Preparation Guide.

MIXING AND INSTALLATION Product #692 Flexible Methyl Methacrylate (MMA) is typically used in
conjunction with fillers and fine aggregate and requires the addition of 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

Material Weight Volume Product #692 8.4 lbs. 1.0 gal. Product #82 Leveling Filler 20 lbs. 1.8 gal.
Pigment Pack N/A 6.4 Vol. oz. 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 inch 30 sq ft
1/8 inch 22-23 sq ft
3/16 inch 15.0 sq ft
1/4 inch 11.3 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. Product #692  systems must be top coated, protected, or sealed with
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

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 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.

Contact Technical Support with your questions about this
product at 352-533-2167. Technical Support Department can help you
with the selection, specification, installation, and maintenance of products, or visit

Norm Lambert
President &
Director of Technical Support
Epoxy Systems, Inc
Available by Phone M-F 9AM-4PM Eastern Time (6 AM – 1 PM Pacific Time)
352-533-2167 (Voice)
352-465-3497 (fax)

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