Why Attic Insulation is Important
Proper attic insulation helps to:
- Minimize the loss of hot air and cold air through your roof
- Stabilize the temperature inside your home during the summer and winter
- Lower your energy bills (by reducing the loss of hot and cold air)
- Increase the lifespan of your heating and air conditioning systems
- Prevent ice dam and mould formation
Heat and Cold Air Loss
Your attic is located at the very top of your house and is therefore exposed to constantly changing weather conditions – especially in Toronto and the GTA. Given the fact that your attic is the place in your home that loses and gains the greatest amount of hot and cold air, proper insulation is an important part of preventing unnecessary air loss out the roof.
When installed correctly, attic insulation controls the flow of air from inside your house to outside. Whether it is summer and you want your house cool, or it is winter and you need it warm, attic insulation helps your home maintain a consistent and stable temperature.
Reduced Energy Bills
An attic that is insulated properly loses less hot and cold air, therefore making your heating and cooling systems use less energy. This means less money spent on expensive energy bills trying to keep your house at the perfect temperature according to the season.
Increased Lifespan of Your Heating and Air Conditioning Systems
Since your heating and air conditioning systems do not need to work as hard to maintain a consistent temperature inside your home, they expend less energy. In turn, this extends their lifespan and prolongs the need for a replacement, helping you save money in the long run with a more energy efficient home.
Prevention of Ice Dams and Mould Formation
Improper attic insulation, ventilation, or both, can cause mould and ice dam formation. When insulation or ventilation is inadequate, hot air becomes trapped inside the attic. This hot air causes mould to grow and also melts the ice on your roof during the winter. This begins a melting and refreezing process at the eaves troughs that eventually creates ice dams that lead to water buildup inside the soffit, and eventually inside your house.
Types of Attic Insulation
The most popular forms of attic insulation are cellulose insulation and spray foam.
Cellulose insulation is blown in into your walls, ceilings, attic and floors, and works to keep your home warmer in the summer and cooler in the winter. You must seal all attic penetrations before installing cellulose insulation.
Spray foam completely seals the insulated area and is unaffected by dampness, meaning its R-value is not reduced by moisture. (R-value is a measure of the resistance between heat flow and an insulating or building material). Spray foam supports your roof’s structure and controls the temperature of your home year round. Unlike cellulose insulation, which in most cases requires both a vapour barrier and an air barrier, spray foam acts as a vapour barrier and air barrier in one.
Integrity Roofers conducts a complete analysis to recommend proper attic insulation in conjunction with attic air sealing and ventilation. Contact us today to schedule an assessment.