Am I the only one who thinks brooming every slab is a waste of a finish?
Last month I pushed hard to broom a 24x30 driveway off Highway 9 out in Snohomish and the homeowner hated it on day one. She wanted a slick trowel finish and I fought her because I was sure broom was the only real answer for outdoor flatwork. Two rains later the broom still sheds water while her neighbor's troweled walk holds puddles, and she called to say I was right. Now I want to know what slope and mix you all run on a trowel finish that has to sit outside, because my old rule was too simple.
Bristle at the idea that broom is the "only real answer" for every outdoor slab, because that's the rule that got you into a fight with a paying customer. Slope does way more for water than texture ever will, so a trowel finish with a good pitch away from the house and a proper mix will shed rain just as well as broom. Her neighbor's walk holds puddles because somebody poured it flat, not because it was troweled. Keep the broom for the driveway if you like it, but sell people on slope and mix first and let texture be their call, since a finish the homeowner hates is a callback waiting to happen even if it does shed water.