Venting Attic To Cool House

Once inside the air heats up and rises higher ultimately exiting through venting at the roof s gables through ridge vents cut into the roof s apex or other vent holes in the roof.

Venting attic to cool house.

Do not use mechanical means electric attic fans. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic. Cool air enters the attic through soffit vents in the eaves.

Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer. If there are asphalt shingles on your roof the attic must be ventilated to comply with the terms of the manufacturer s warranty. Sometimes people say they want to install a pav to cool the house because they don t have ac. Most homes already have some passive attic venting built in.

Intake vents located at the lowest part of the roof under. If your roof peak runs parallel to the street put them on the backside where they ll be less prominent. Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage.

Place all the roof vents on the same side of the roof. 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. In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth. Don t avoid ventilating your attic for fear you re letting cold air into the house.

These fans circulate the air within the. Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed. In that case what they really need is a whole house fan not a powered attic ventilator. Attic venting fans attic fans serve a different function removing the hot and moist air from the attic and leaving the space below the attic floor alone.

Your actual living space is sealed and insulated at the attic floor the attic is outside this envelope.