




That dark, almost black discoloration you see covering a roof? That's not dirt - it's biological growth. Algae, mold, and mildew build up over time, especially in humid climates, and they don't just look bad. They actually break down roofing materials from the outside in. Left alone long enough, it shortens the life of the roof.
This was a large cement tile roof completely overtaken by that kind of buildup. The whole surface had gone dark from algae coverage. Cement tile is a tough material, but it's not invincible - and it absolutely cannot be cleaned with high-pressure washing. That kind of approach would crack tiles and force water under the surface. Soft washing is the right call here, every time.
We applied a low-pressure soft wash treatment across the entire roof. The solution does the work, not the pressure. It gets into the biological growth at the root level and kills it off, which is why the results hold up longer than pressure washing ever would. Once the roof was done, we moved to the house exterior and windows to bring the whole property together.
The difference from above is hard to miss. The tile went from nearly black back to its natural light gray color, and the rest of the exterior matched it. A clean roof isn't just a cosmetic thing - it's maintenance. Protecting surfaces like this regularly costs a fraction of what early replacement or repairs run.
A good exterior wash covers more than one surface. Roof, walls, windows - when it all gets done together, the property looks like it's been taken care of. Because it has been.