Flashing Cements

Blackhawk 5400 and 5600 are workhorse flashing cements and detail mastics to seal and protect the most demanding areas of the roof such as penetrations, curbs, and inside/outside corners. 5400 is an economical grade that can be used in any of the aforementioned situations including night seals in phased construction. 5600 offers higher performance slump resistance for demanding applications.