The cementitious substrate, particularly when concrete, may be any type of a floor, walk, {TAIL ~ driveway} or {HEAD ~ other horizontal surface} or any type of a vertical surface such as a concrete wall or any slanted surface 
The cementitious substrate , particularly when concrete , may be any type of a floor , walk , { TAIL ~ driveway } or { HEAD ~ other horizontal surface } or any type of a vertical surface such as a concrete wall or any slanted surface
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH