Too Much Attic Ventilation

As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in.

Too much attic ventilation.

Do not use mechanical means electric attic fans. Also should the vents to the crawl space be open in summer and closed in winter. And when you put too many products on your roof that s improper ventilation. Homeowners can too easily inadvertently block them when insulating the attic.

Dangers of too much ventilation. A wind turbine catches the wind and spins a fan which pulls hot air outside. 2 focusing only on heat buildup. If a roofing contractor is going to be out of balance with the attic ventilation system it s better to have too much intake than too much exhaust because the excess intake converts to exhaust on the leeward side of the house.

What happens is people put too many products on their roof. The two main dangers associated with too much ventilation involve roof damage and increased utility bills. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. You can also contact your local municipality to check on building code in your area.

Most building codes require a ratio of 1 150 ventilation space to attic floor space. While effective at pulling in cooler air the biggest problem posed by this type of soffit vents is their positioning. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed.

Roof ventilation keeps the air moving and stops mold from growing but too much ventilation can be just as bad as having none. All it takes to grow mold in your attic is stagnant humid air. With a power switch or a thermostat installation an attic fan can be turned on to let hot air from the attic out. If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air.

If there s blown in insulation like ours rake back the fluffy stuff with a 3 or 4 ft long 1 x 6 or use a garden rake or hoe.