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Liquid-Applied Systems

When faced with a confined urban space, numerous roof penetrations or restricted use of hot asphalt or heat welding, JM now gives you an ideal new solution. JM liquid-applied systems provide a seamless waterproof membrane that is easily applied and conforms to any penetration shape.

Our SeamFree™ Liquid Membrane System forms an exceptional bond. It creates an elastomeric, highly protective surface, that is perfect for roofs where standing water is a problem. This proven technology delivers exceptional waterproofing performance that will stand the test of time.

The Right Solution for a Variety of Applications — Even Cool Roofs.

This liquid-applied system works on both new construction and re-roof applications. Because it is an ideal waterproof solution, applications include:

  • under plaza decks and pavers
  • beneath vegetative roofs
  • terraces and balconies
  • a stand-alone roofing membrane
  • or roofs with multiple penetrations.
The surface can be covered with reflective coatings or a cap sheet for a cool roof option, or with granules for an aesthetically pleasing surface.

SeamFree™ Liquid Membrane

SeamFree™ Liquid Membrane is a unique, two-component, elastomeric, liquid-applied waterproofing product, with a reinforcing scrim for extra strength.

PermaFlash® Bituminous Flashing System

PermaFlash® Bituminous Flashing System is a flexible liquid-applied, two-part system with a pliable polyester scrim that can accommodate even the most challenging penetration shapes.



Product & Sales Information: (800) 654-3103