Toiture 640 Inc.
Installation of ventilation systems on the North Shore
Section 9.19 of the National Building Code of Canada requires that all roofs have adequate ventilation. As a Ventilation Maximum-certified contractor, Toiture 640 Inc. has the expertise to install an efficient roof ventilation system and solve your ventilation problems.
The Importance of Good Roof Ventilation
A proper ventilation system protects your roof and your home.
- Prevent damage to your roof covering and asphalt shingles
- Extend the life of your home's structure
- Prevent water infiltration and ice buildup
- Avoid mould and mildew problems
- Reduce your heating and air conditioning costs
EFFECTIVE YEAR-ROUND
Roof Ventilation in Winter: Prevent Moisture and Condensation
During the cold season, the air inside your home is warmer and contains more moisture than the cold air in the attic. Without proper ventilation, this water vapour travels through the ceilings and insulation and condenses in your attic.
Problems Caused by Poor Roof Ventilation in Winter:
- Condensation on the Roof Structure: Water vapour condenses on contact with cold rafters, trusses, and underlayment
- Compression of Insulation: Moisture reduces the "R" value of your insulation and accelerates heat loss
- Structural Damage: Moisture buildup leads to mould, rot, and ice dams
- Deterioration of Asphalt Shingles: Repeated freezing and thawing prematurely damages your roof
Roof Ventilation in Summer: Reduce Accumulated Heat
In summer, heat trapped in the attic overheats your home and damages your roof. An effective ventilation system installed by our certified roofers eliminates excessive heat and extends the life of your asphalt shingles.
Problems Caused by Poor Roof Ventilation in Summer:
- Overheating Rooms: Upstairs bedrooms become uncomfortable and your air conditioner runs constantly
- High Energy Costs: Excessive heat increases your air conditioning bills
- Damage to Asphalt Shingles: Exudation, shingle curling, and deck warping reduce the life of your roof
- Premature Aging: Extreme heat rapidly deteriorates roofing materials
Our Roof Ventilation Service
1. Comprehensive Assessment:
Our experts inspect your attic, measure the required ventilation area, and identify existing problems.
2. Component Selection: We select the appropriate ridge vents, soffit vents, and other components to ensure optimal air circulation.
3. Professional Installation: Our roofers install your ventilation system in accordance with building code standards and asphalt shingle manufacturer specifications.
4. Integration with Your Roof: When replacing your asphalt shingles, we simultaneously optimize your ventilation system for maximum protection.
HIGH-QUALITY VENTILATION
Wherever you are in the Laurentians or Lanaudière, our roofers are ready to handle your roof ventilation needs. We take into account your home’s insulation, airtightness, and air exhaust points to offer the ideal solution—always within your budget.
Blainville
Laval
Rosemère
Saint-Eustache
Deux-Montagnes
Mirabel
Saint-Jérôme
Sainte-Marthe-sur-le-Lac
Terrebonne
Boisbriand
Lorraine
Oka
Saint-Joseph-du-Lac
Montreal



