Serving Somerset, Devon & Bristol 07887608769 info@mmrcs.co.uk
How a Roof Biocide Works & Why It’s Essential
Our Standard of Care
At MM Roof Cleaning Services, we believe a job isn't finished until the roof is protected. That is why we include a professional licensed Biocide Treatment as standard on every roof we clean (unless otherwise requested). Physical cleaning removes the visible mess; Biocide ensures the invisible spores are dealt with too.
How It Works
- Step 1: Killing at the Root: After application, the biocide penetrates the porous surface of the tile to kill organic growth at the root level.
- Step 2: Destroying the Biofilm: It breaks down the "biofilm"—the invisible layer of bacteria and spores that allows moss to stick to your roof.
- Step 3: Residual Protection: The biocide leaves a protective barrier within the tile, stopping new spores from germinating.
Why Biocide is Vital After Scraping or Low-Pressure Washing
Physical removal is only half the battle. Even after a thorough clean, microscopic spores remain.
- Scraping removes the bulk but leaves "seeds" behind.
- Low-pressure washing cleans the dirt but doesn't sanitize the tile.
- Biocide ensures those tiny fragments and spores are dead, preventing immediate regrowth.
The Application & Transformation Process
- Inspection: We begin with a full inspection of the roof to determine the safest cleaning method (Scrape or Low-Pressure Wash).
- Removal: We remove the bulk of the moss from the tiles.
- With a Manual Scrape, we aim for 90-95% removal to protect the integrity of the tiles.
- With a Low-Pressure Wash, we typically achieve around 99% removal.
- Gutter Clearance: Once the roof is clear, we thoroughly clean out the gutters and downpipes to ensure all debris is removed from the property.
- Treatment: We apply the biocide evenly using a low-pressure spray. This is crucial for dealing with the remaining 1-10% of moss fragments and spores that physical removal cannot reach.
- The Natural Rinse: The natural weather cycle takes over from here. Rainwater gently washes away the dead material and deep-set stains.
- The Result: This is a gradual process. While the roof looks great immediately, it will continue to brighten and clear over the following several months (and sometimes longer) as the elements rinse the tiles clean.
Why Choose Biocide Treatment?
- ✅ Total Protection: Stops moisture-absorbing moss from damaging tiles.
- ✅ Longevity: Extends the lifespan of your roof and the time between cleans.
- ✅ Deep Clean: Achieves a level of cleanliness that physical scrubbing alone can't reach.
- ⚠️ Honest Results & Roof Care: While biocide doesn’t make your roof completely immune to regrowth forever, it slows it down significantly. To maintain this protection long-term, we offer a Roof Care Plan. Periodic top-up treatments as part of a care plan maintain the protective layer and keep your roof moss-free for years to come.