About Attic Ventilation and Insulation

In a well Insulation Contractor ventilation system, cooler air (in the form of intake) enters at soffit or eave vents and helps to push out hot air trapped by exhaust ventilation. Cooler air should be able to pass through your roof deck without being hindered by insulation or ductwork. For this to work properly, your ventilation system should consist of both static (exhaust) and mechanical vents that are positioned in a balanced manner (with approximately equal amounts of each).

Insulation is an important component of the ventilation process because it helps reduce the amount of heat transferred from a heated home into an unheated attic space. This reduces energy consumption and costs. Proper attic insulation also helps maintain comfortable temperatures throughout a home during seasonal changes.

Enclosed rafter spaces and attics with finished living areas should be adequately insulated and sealed, but care must be taken not to block soffit ventilation openings or obstruct the attic venting system with insulation. A professional can help determine the optimum R-value for your specific climate zone and home.

Fiberglass batt insulation is the most common and affordable option. It’s available in pre-cut rolls that are easy to install and can be cut to fit any space. It has an R-value of about 2.5 per inch. Cellulose, made from recycled paper, is another option that offers good value and superior moisture resistance. Spray foam insulation is more expensive but offers excellent air-sealing properties and is suitable for attic encapsulation.

Foam Expert Group
130 Industry St #39 North York ON  M6M 5G3
647-671-3950