Asphalt shingles in Laval-Ouest are particularly vulnerable to algae due to their composition. Our SH + surfactant treatment destroys them chemically.
🔬 Why sodium hypochlorite (SH)?
SH is the only product recognized by shingle manufacturers (IKO, BP, CertainTeed) to safely and permanently eliminate organic stains on roofs. Combined with a professional surfactant, it penetrates protective sheaths and destroys organisms at the root. Results last 3 to 5 years.
Questions about Algae on Shingles in Laval-Ouest
Green shingles in Laval-Ouest indicate colonization by algae feeding on calcium carbonate granules. It's very common in shaded and humid areas.
Soft Wash with sodium hypochlorite (SH) is the recommended method in Laval-Ouest. It destroys algae at the root unlike high pressure which displaces them.
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