Why Aggressive Pressure Washing Destroys Roof Tiles
Untrained cleaners blast roofs with 3,000+ PSI industrial pressure washers. This brutal pressure strips away the protective colored surface granule layer on concrete tiles, shoots gallons of water upwards underneath laps into the roof void, and breaks fragile slate lugs.
At Elevate Roofing & Building, we use certified biocidal soft washing. We gently scrape off heavy thick clumps of moss by hand using blade profiles contoured to your exact tile shape. Then, using low garden-hose pressure (under 60 PSI), we spray a specialized, eco-friendly quaternary ammonium biocide. This chemical penetrates deep into the pores of the tile, killing microscopic lichen roots and moss spores so they cannot grow back for years to come.
Our Soft Wash Cleaning Deliverables
Heavy moss cushions are cleanly scraped off by hand without walking directly on fragile slates or breaking delicate tiles.
Registered government-approved biodegradable biocide that sanitizes the surface and prevents regrowth for 3 to 5 years.
All dislodged moss falling into gutters is vacuumed out and downpipes are flushed clear with water to prevent blockages.
Flowerbeds, lawns, and pets are protected. Foliage is pre-soaked and covered with tarpaulins to prevent any chemical stress.
We also treat red algae staining and green mildew on painted render, pebble-dash, and modern silicone K-Rend facades.
Because we are professional roofers (not just window cleaners!), we inspect flashings and replace any cracked tiles uncovered.
Our Soft Wash Protocol
Ground & Garden Protection
Downpipe diverters are fitted to protect rainwater tanks, and shrubs/flowerbeds are heavily pre-wetted with clean water.
Manual Moss Scraping
Technicians use telescopic carbon-fibre poles with custom stainless scraper blades to safely detach all heavy moss clumps.
Low-Pressure Biocide Treatment
Professional biocidal formula is sprayed at gentle tap pressure. It penetrates tile pores, immediately sanitizing organic spores.
Gutter Vacuum & Ground Cleanup
All gutters are vacuumed spotless, windows rinsed clean, surrounding paths swept, and your residual protection guarantee begins.
Frequently Asked Questions
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