A properly ventilated roof can save you a ton of money in the long run.
One of the most important components of a great roofing system is ventilation, the longevity of your roof greatly depends on it. A few extra dollars spent on adequate ventilation will save you a ton of money in the long run.
What does Ventilation do and Why is it Important?
Ice damning is a major cause of leaks during winter months. Ice damning occurs when your attic is not properly ventilated. Warm air from your home travels upwards and remains in your attic, melting the snow unevenly, which then freezes again when it reaches your eaves. This ice buildup will not only cause condensation and mould, but will deteriorate the shingles at a rapid rate and rot the roof deck.
During the summer, proper ventilation will allow for continuous outside airflow throughout the attic, keeping the inside of your home cooler, thusly saving you a large amount on your air-conditioning bill.
Things to Remember When Ventilating your Roof!
Your intake ventilation (soffits) must not be blocked by any insulation.
Vents must always be staggered along the ridge of the roof. Placing vents adjacent to one another will cause cross ventilation (air entering one vent and leaving directly out another).
Only one style of vent can be used in the same attic space. The use of different vents types will cause an imbalance in air flow and leave portions of the roof unventilated.
Ask your Contractor.
When replacing your roof, be sure to ask your contractor the following questions regarding ventilation:
Do I have an adequate amount of exhaust vents in relation to my attic space and intake vents?
Is there more than 1 type of exhaust vent being used on the roof?
Are my old vents being used?
Is there potential for cross ventilation to occur?
Are my intake vents (soffits) blocked by any insulation? (This can be checked by looking inside the attic space).
Do I have an adequate amount of intake ventilation?
All in all, choosing the right roofing contractor in your area will eliminate any future ventilation risks and save you a ton of money in the long run.