Lichens colonizing roofs in Saint-François 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 Saint-François
Yes. Lichens embed more deeply in shingles in Saint-François and are harder to eliminate. Their rhizines extract minerals and create microcracks that promote water infiltration.
Lichen removal in Saint-François 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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