we call it ' slop trowel ' UNLESS its an expensive home then its called ' hand applied etruscan overlay ' :laughing: mortex makes the product but, by now, its as generic as kleenex or scotch tape,,, i suspect the color was integral - the ' chalking ' is from lack of a proper sealer,,, he picked the wrong material - his 1st mistake was listening to someone wearing an orange apron,,, as i recall, most pro's thought behr was lousy altho their reputation seems to have improved since hooking up w/big orange :whistling2:
remove that junk & apply a good sealer - we use ' css ' which is the best ( 50% solids & methyl-methacrylate reinforced ) but at $ 55 gal/200sf, most won't pony up the $$$,,, for a next best, try cure 'n' seal avail at any masonary supply house
whether he does this or not, it will be extremely labor intensive & cost a helluva lot more now - franmar's beanee-doo is good as is ' elephant snot ' - he'll also need a low speed buffer, the brush, & several black pads along w/a decent ( 3,500psi-4gpn-turbo nozzle ) pressure washer - expect this is npt the information you wanted to hear but there's no silver bullet after shooting himself in the foot,,, i don't have a dog in this hunt but we do this work for a living - good luck !