Wish I could help but mine are tile and palm trees, lol
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Matthew C Perry General Manager Callahan Pro Wash Professional Exterior Cleaning Services Roof Cleaning, Pressure Washing, Paver Cleaning and Restoration 813-727-5161 callahanprowash.gmail.com
Well if I'm ever in NJ I'll bring a camera and do a ride along, lol
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Matthew C Perry General Manager Callahan Pro Wash Professional Exterior Cleaning Services Roof Cleaning, Pressure Washing, Paver Cleaning and Restoration 813-727-5161 callahanprowash.gmail.com