protective waterproofing coating of walls in contact with the ground with bituminous mastic

adhesion adhesive applies apply bitum bitumen bituminous black brush build building coat coating concrete construction contact course cover covered covering dampproof foundation glove ground hand hydroisolation hydrophobic hydrophobization impenetrable impermeable industrial industry layer mastic pit primer protection protective sticky stonework surface tool trench viscous wall walls waterproof waterproofing work worker