Macrylex F98 PUMMA


flexible waterproofer and joint filler for concrete

Macrylex F98 PUMMA is a high viscosity, flexible resin used for crack isolation and as a waterproofing membrane under MMA floor coating systems.  It is also used as a resilient mortar and joint filler for numerous other applications.



Macrylex F98 PUMMA is a high viscosity, 100% reactive, flexible methyl methacrylate polyurethane hybrid resin used as a crack isolation or waterproofing membrane under various Macrylex Systems or as resilient mortar or joint filler for numerous applications. Macrylex F98 PUMMA resists cracking caused by horizontal substrate movement, providing a crack resistant, resilient surface with superior performance in cold temperature environments. Macrylex F98 PUMMA offers stress-relieving properties for floor slabs showing movement and/or vibration. Excellent for use an intermediate membrane layer or patching mortar in loading docks and ramps, equipment rooms, large animal rooms, activity rooms, automotive and tooling industry, freezers, coolers, bridge decks, roof decks, pedestrian walkways, parking garages, ship decks, pool lines, pool decks, joint repair, food industry, dairies, beverage industry, and numerous other industries and applications.


  • Rapid cure with short recoat time (60 min)
  • Elongation of 300%
  • Reduces noise created by mechanical vibration
  • Applied at a thickness of 1/16″ to 1/4″
  • VOC Compliant, Meets USGBC LEED Requirements
  • Use over a wide temperature range, even below freezing

Additional information


Technical Details

%Reactive100%, Zero VOCWorking life, 50°–70°F15–25 minutes, will vary with temp. and amount of hardener
Recoat time55–75 minutesViscosity, cps600–800cps
Weight per gallon8.4lbsTensile strength250psi
Elongation at break300% resin, 100% filled mortar


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