Liquid Applied RoofingWhen 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:
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 MembraneThe SeamFree™ Liquid Membrane System is ideal on concrete decks in both new construction and re-roof applications. This proven technology is perfect for roofs with numerous penetrations since it easily conforms to any shape and provides a seamless, membrane that will stand the test of time. SeamFree™ Liquid MembraneSeamFree Liquid Membrane is a unique, two-component, elastomeric, liquid-applied waterproofing product, consisting of an asphalt/urethane base material and an activator. SeamFree Liquid Membrane is compatible with the PermaFlash® Bituminous Flashing System for penetrations and other details. SeamFree Liquid Membrane Base is available in 4.4 gal (16.7 l) pails. The SeamFree Liquid Membrane Activator is available in 44.1 fl oz (1.3 l) bottles. SeamFree Liquid Membrane can be used on concrete decks in both new or re-roof applications that are flat or slightly sloped. It is ideal for use as waterproofing for plaza decks or as a stand alone roof membrane. SeamFree™ ScrimSeamFree Scrim is a stitchbonded polyester scrim that offers a sturdy combination of burst strength and toughness for roofing applications. The flexible polyester allows elongation of up to 50%, providing excellent accommodation to thermal stresses and movements. The parallel fiber structure of stitchbonded polyester allows for faster and more uniform wicking of the SeamFree Liquid Membrane System than either fiberglass or polypropylene reinforcement. The covering of visible fabric texture is an excellent indicator that the recommended minimum thickness has been applied. The result is a monolithic liner which remains intact even under thermal shock conditions. 
PermaFlash® Bituminous Flashing System PermaFlash® Primer is an organo-silane compound dispersed in isopropyl alcohol. It improves adhesion of MBR® Flashing Cement to non-porous surfaces such as metals and some plastics. PermaFlash Primer is part of the PermaFlash® integrated flashing system. PermaFlash® ScrimPermaFlash® Scrim is a stitchbonded polyester scrim that offers a sturdy combination of burst strength and toughness for roofing applications. The flexible polyester allows elongation of up to 50%, providing excellent accommodation to thermal stresses and movements. PermaFlash Scrim is part of the PermaFlash System - an integrated flashing system specially formulated for use in bituminous roofing systems. The PermaFlash System also includes PermaFlash Primer and MBR® Flashing Cement. PermaFlash features a unique, two-part adhesive which has tested superior to one-part adhesive cements. Reinforced with the polyester scrim, the resulting system forms an exceptionally durable elastomeric seal which bonds strongly with a variety of substrates and features extremely low permeability. The parallel fiber structure of stitchbonded polyester allows for faster and more uniform wicking of the MBR® Flashing Cement than either fiberglass or polypropylenereinforcement, and the covering of visible fabric texture is an excellent indicator that the recommended minimum thickness has been applied. The result is a monolithic liner which remains intact even under thermal shock conditions. Unlike polypropylene fabrics that quickly deteriorate if directly exposed to UV light, PermaFlash Scrim has superior weathering resistance. MBR® Flashing CementMBR® Flashing Cement is a unique, two component, elastomeric, liquid applied flashing material, consisting of an asphalt/urethane base material and an activator. It is formulated for use with the Johns Manville (JM) SBS modified bitumen membrane products. The two parts are MBR Flashing Cement Base and MBR Flashing Cement Activator. MBR Flashing Cement is available in 5-gal (18.9 l) pails, 1-gal (3.8 l) cans, or in cartridges. MBR Flashing Cement cartridges do not require premixing. Johns Manville Roofing Systems |