Question 1

How often should I have my house washed?

Accepted Answer

We recommend having your house washed once a year to maintain its appearance and protect the siding. However, if your property is located near a body of water, in a wooded area or heavily shaded, washing every 6 months may be necessary as humidity promotes mold and algae growth. On Montreal's North Shore, the humid climate and significant temperature variations accelerate contaminant buildup. Regular washing extends your siding's lifespan and prevents costly damage.

Question 2

Why are there black streaks on my roof?

Accepted Answer

Black streaks on your roof are caused by a bacterium called Gloeocapsa Magma, which feeds on the limestone granules in asphalt shingles. This bacterium, along with moss and lichen, thrives in humid climates like Montreal's North Shore. Besides the unsightly appearance, these organisms degrade your shingles, reduce their lifespan and can cause leaks. Aqua-Net's soft roof washing eliminates these organisms at the root with a biocidal treatment, without using high pressure that would damage your shingles.

Question 3

Does mold on my house pose health risks?

Accepted Answer

Yes, mold and algae growing on your house siding can pose health risks, particularly for people with allergies, asthma or respiratory sensitivities. Mold spores can be carried by wind and enter your home through windows, doors and the ventilation system. Possible symptoms include: eye irritation, nasal congestion, sneezing, coughing and sore throat. Additionally, the bacterium Gloeocapsa Magma that causes black streaks on roofs can also contribute to degraded air quality. Regular professional washing eliminates these contaminants at the source and protects your family's health. On Montreal's North Shore, where humidity is high, we recommend annual washing to maintain a healthy environment.

House washing in Sainte-Marthe-sur-le-Lac

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House Washing

Roof Washing

Fence Washing

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Questions about washing in Sainte-Marthe-sur-le-Lac

How often should I have my house washed?

Why are there black streaks on my roof?

Does mold on my house pose health risks?

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