
MBR® Flashing Cement
MBR® 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.
MBR Flashing Cement is also used in the JM PermaFlash™ Bituminous Flashing System for penetrations and other details.

