Attic will need 10 sq.
House venting into attic.
Shop for your vents.
Your actual living space is sealed.
In some circumstances you can have less but we recommend the 1 150 ratio.
Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.
Bountiful eave soffit ventilation space.
Most building codes require 1 sq.
A hot ceiling tells you that the attic is acting like a solar oven.
So a house with a 1 500 sq ft.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
If there are asphalt shingles on your roof the attic must be ventilated to comply with the terms of the.
How to vent the attic of a house 1.
An attic floor that is thoroughly air sealed.
Look at your eaves and roof.
Hvac equipment in the attic that is well insulated and sealed.
Multiply the area by 144 to convert it to square inches then divide the result by 300 to determine the amount of.
Of venting ideally about half placed high on the roof and half in the soffits.
Here are four signs of an unventilated or under ventilated attic.
Obviously more research is needed but here s what we do know.
If you don t see any attic vents on the roof or in the eaves you need to add some.
Don t avoid ventilating your attic for fear you re letting cold air into the house.
Of venting technically net free vent area or nfva for each 150 sq.
Touch your ceiling on a warm sunny day.
Measure the length and width of your attic floor with a tape measure and multiply them together to get the area in.