You might be surprised to find out that one of the most common problems we see when performing BC roof inspections has nothing to do with shingles or guttering. A high percentage of roofs — even those installed recently — are underventilated. Improper attic ventilation can lead to a number of issues, including higher energy bills and even roof failure. In fact, the National Roofing Contractors Association reported in 2007 that the number one cause of premature roof failure in the United States was improper ventilation.
If your attic is not allowing air to circulate as it should, it’s actually working against you rather than for you. An attic with proper ventilation will allow hot air to escape, lessening the load on your air conditioning unit in the summer. You will also want to be sure that your attic has adequate levels of insulation to prevent heat loss during colder months.
Another important benefit of an adequately ventilated roof is that it will prevent the build-up of moisture in your attic space. This is essential in the Lower Mainland, where the environment is already humid. High levels of humidity will reduce the effectiveness of attic insulation, permit the growth of mold and mildew, and over time could cause dry rot that leads to premature roof failure.
Improper ventilation causes many problems for homeowners in the Vancouver area, including:
• Higher heating and cooling bills.
• Increased wear on HVAC systems.
• Shorter roof life and decreased roof value.
• Mold and mildew growth that triggers respiratory and other health issues.
• Hidden structural damage.
If you have concerns about your roof ventilation system, call the professionals at Crown Residential Roofing at (877) 907-3066 to schedule a free inspection. With a few modifications, we may be able to help you save a huge amount on energy bills and even prevent structural repairs or roof replacement.