dcbrock, I just did a job n the same type of patio. my 4 gpm 18 inch surface cleaner worked great! No cleaners. check out Dan’s vlog on you tube, he actually has a vid on using his surface cleaner on brick
I just did a similar patio and retaining wall. Due to the high amount of foliage I did not pre or post treat. Surface cleaner and Turbo tip made quick work of it and the client was over the top thrilled!
I pre wet it to soften it up. Turbo tip it, no chemicals. Only use the turbo if the brick is the right type and mortor is in good shape. Some brick is softer then others. After you clean it with just Pressure you’ll likely have some algae below the surface but still visible. You can’t clean it with pressure. Spot post treat it with a strong mix. The strength will vary but I generally use 50/50 in a pump up.
As long as the mortar is in tact and in good shape, and there isn’t a sand coating on the bricks you can downstream hw mix, swell and hit if with a little pressure and it will look great. I wouldn’t x-jet without a proportioner around all those plants.
Surface cleaner will work again If the mortar is in good shape. B