House Venting Into Attic

Touch your ceiling on a warm sunny day.

House venting into attic.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Measure the length and width of your attic floor with a tape measure and multiply them together to get the area in. Attic insulation that is less than r 19.

Your actual living space is sealed. Attic ventilation fans could be effective if your home has. Multiply the area by 144 to convert it to square inches then divide the result by 300 to determine the amount of. Most building codes require 1 sq.

Of venting technically net free vent area or nfva for each 150 sq. So a house with a 1 500 sq ft. Hvac equipment in the attic that is well insulated and sealed. Attic will need 10 sq.

Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. How to vent the attic of a house 1. Shop for your vents. In some circumstances you can have less but we recommend the 1 150 ratio.

Of venting ideally about half placed high on the roof and half in the soffits. Don t avoid ventilating your attic for fear you re letting cold air into the house. A hot ceiling tells you that the attic is acting like a solar oven. Bountiful eave soffit ventilation space.

Look at your eaves and roof. If you don t see any attic vents on the roof or in the eaves you need to add some. If there are asphalt shingles on your roof the attic must be ventilated to comply with the terms of the.