High-Pressure Cleaning

High-pressure cleaning is the essential first step in any professional roof restoration. The process uses a commercial-grade pressure washer — typically delivering water at 3,000 to 4,000 PSI — to blast away years of accumulated grime, biological growth, and loose surface material. This not only improves the appearance of the roof but is critical for ensuring that any subsequent coatings or membranes will adhere properly to the clean substrate. Without thorough cleaning, coatings can bubble, peel, or delaminate within months. The cleaning process is methodical, starting from the ridge and working downward to ensure dirty water flows off the roof rather than onto already-cleaned areas. On tile roofs, care is taken to direct the spray at an angle that lifts moss and lichen from the tile surface without driving water under the overlapping tiles. On metal roofs, high-pressure cleaning removes oxidation, chalking paint, and surface contamination to prepare the substrate for priming and coating. In Gippsland, roof cleaning is particularly important due to the region's relatively high rainfall and humidity, which promote vigorous moss and lichen growth — especially on south-facing roof planes and in shaded areas under overhanging trees. The water used during pressure cleaning is also directed to flush out gutters and valleys, removing accumulated debris. Town & Country Roofing uses commercial-grade equipment capable of cleaning an average residential roof in 4 to 6 hours.