Enterprise J.M. Simard
Expert in ventilation and roof.

See how a good ventilation for your home can enhance your well been and the lifetime of your roof.
problemes de ventilation

We are experts in ventilation and roof.

Protect your home with good attic ventilation ! We are specialized in attic ventilaton as per the Ventilation Maximum technique

House ventilation winter and summer
Think long terms.

A durable roof inevitably passes through good ventilation. Trust us for an absolute quality, our expertise will increase your roof lifetime.

Roof too hot
The heat causes problems.

Problems of condensation in the windows, water infiltration at snowmelt, ice on the rim of the roof, premature wear of the shingles.

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Roof types
Type of house

Each type of roof has its particularities. Trust us for your work to benefit from our 20 years of expertise and make sure you have a roof perfectly ventilated.

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Roof with wrong ventilation