All Seasons Steam Cleaning & Decorating offers one of the most effective methods for roof cleaning. Our steam cleaning delivers instant results while serving as an eco-friendly alternative to chemical treatments. The high-temperature steam kills algae, moss, lichen, mould, and mildew, removing both the organisms and their root systems. Just as uprooting a weed is more effective than cutting it, our steam cleaning thoroughly eliminates moss and helps prevent regrowth.