Optimal Insulation for Roof Longevity and Efficiency

Proper insulation plays a critical role in extending the lifespan of your roof’s shingles, enhancing overall roof health, and maximizing energy conservation within your home. At Boston Roofing, we emphasize the importance of achieving the perfect balance in roofing insulation—not too much and not too little. Correct insulation is crucial for maintaining efficient airflow, a key factor in protecting the integrity of your roofing materials.

Why Correct Insulation Matters:

1. Preservation of Shingles and Roof Materials: Incorrect airflow can significantly reduce the lifespan of your shingles and potentially void manufacturer warranties. Our expertise ensures that your insulation is precisely calibrated to prevent these issues.
2. Prevention of Moisture and Mold: Insulation that does not allow for adequate air movement can lead to moisture buildup, fostering mold and bacteria growth within the roof cavity. This not only poses a health risk but can also compromise the structural integrity of your roof.
3. Control of Ice Formation and Leak Prevention: During the cold Toronto winters, improper insulation can cause ice to form on the underside of your attic’s plywood, leading to leaks when temperatures rise. This cycle can severely damage your roofing materials over time, resulting in costly repairs or replacements.
4. Energy Efficiency: Properly installed insulation helps maintain a stable temperature in your home, reducing the need for excessive heating or cooling and thereby lowering your energy costs.

At Boston Roofing, we understand that insulation is more than just filling space—it’s about enhancing your home’s energy efficiency and safeguarding the structure of your roof. Our experts ensure that your roof is equipped with the optimal level of insulation to promote healthy airflow, prevent damage, and conserve energy. Let us help you protect your investment and improve your home’s comfort.

For more information on insulation please visit :

• CertainTeed Roofing Products
• Guardian Building Products
• Owens Corning Pink Insulation
• Knauf Insulation
• Cellulose Insulation Manufacturers Association
• Attic Condensation
• All Insulation
• Ventilation-maximum.com

Examples of water and moisture damage from improper ventilation.
In the examples below, there was no ventilation between the insulation and the roof boards. This created a build up of moisture and caused mould to grow.

Bathroom Fan : Many houses have a bathroom fan installed like the one below, left. The arrow points to where the moist air comes out of the fan directly into the attic. A correct installation would have included an insulated flexible pipe from the fan to a “B” vent in the roof so that the moist air is expelled outside of the attic. The picture to the right shows the underside of the roofing plywood covered with mould.

Hole in the Vapour Barrier: When there is a hole in the vapour barrier, such as the one in the picture below left, this creates condensation and consequentially mould, harmful spores, and bacteria.

Inside moisture damage: When people see water damage like the examples below, they tend to think it is due to their roof. In these examples, the damage was caused from improper installation of the vapour barrier.