If you see dampness or frost you need better roof ventilation and some attic vents.
Attic exhaust vent installation.
A powered exhaust vent is much like a roof mounted exhaust fan.
An attic with 1 500 square feet x 7 1 050 cfm make sure you also have adequate air intake typically through the undereave vents.
Take for example ridge vents.
For the best results place roof ventilation near the roof s peak and soffit vents in the eaves.
I have roof vents so i have roof ventilation.
1 square foot of intake for every 300 cfm of ventilator.
1 170 cfm ventilator 300 3 9 square feet of intake ventilation this is the minimum intake required.
Grab a flashlight and inspect your attic during the winter.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood.
Air flows in through the soffit vents and out through the roof vents.
They are typically easier to install and won t detract from the appearance of your roof.
A rule of thumb.
It can be controlled by a thermostat or moisture monitor.
Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof.
Vents come in various styles.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
See the benefits of attic ventilation a new roof is more than just shingles.
The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all.
Blades spin within the unit to expel air from the attic until the right temperature or moisture level is reached at which point it will automatically shut off.