Lichens colonizing roofs in Laval are distinguished visually by their gray, orange or yellowish tones. This fungus-algae symbiosis is much more resistant than moss alone.
🔬 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 Lichens on Roof in Laval
Yes. Lichens embed more deeply in shingles in Laval and are harder to eliminate. Their rhizines extract minerals and create microcracks that promote water infiltration.
Lichen removal in Laval is included in our cleaning service. An adjustment of $0.05 to $0.10/sq.ft may apply depending on severity. Base price from $399.
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