SIKA® BLACKSEAL-PRIMER: DESCRIPTION: Sika® BlackSeal-Primer is a one-part solvent based bitumen primer for thick layer bituminous coatings and membranes. WHERE TO USE: • Surface consolidation of concrete, mortar and brick substrates • Improves the adhesion of solvent-free bituminous coatings and membranes ADVANTAGES: • Applied by brush, roller or airless spray • Supplied ready to use • Good penetrating ability into concrete and mortar substrates • Quick drying