You might be tempted to get the jet wash out or hire someone who promises a quick blast to clean your tiles. We strongly advise against this. Most roof tile manufacturers, like Marley or Redland, explicitly warn that high-pressure water can strip the protective granular surface off your tiles. This leaves them porous, brittle, and essentially voids your warranty. It can also force water under the tiles and into your loft space, causing a whole new set of problems. Our soft washing approach is the complete opposite. It is a low-pressure technique that relies on high-quality, HSE-approved biocides to do the hard work. We do not need to blast your roof because our treatments kill the moss, algae, and lichen at the root. This means the spores are actually destroyed, so the green stuff does not just grow back a few months later. It is safer for your tiles and much more effective in the long run.