Touch your ceiling on a warm sunny day.
Sure vent in attic.
Look at your eaves and roof.
Of venting ideally about half placed high on the roof and half in the soffits.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
So a house with a 1 500 sq ft.
Before we explore how to.
Of venting technically net free vent area or nfva for each 150 sq.
Generally speaking you need a ratio of 1 300 where for every 300 square feet of ceiling space you need 1 square foot of attic ventilation.
Properly ventilating your attic is one of the best ways to increase the longevity and performance of your roof.
Intake vents located at the lowest part of the roof under the eaves allow cool.
Attic will need 10 sq.
As part of a ventsure balanced air ventilation system of intake and exhaust the ventsure inflow vent helps reduce heat and moisture buildup that can lead to ice damming and roof deterioration.
It s important there is a balance between the intake and exhaust ventilation to help ensure air flows smoothly and efficiently.
That said air resistance and interference such as vent grates reduces the area of true ventilation.
A hot ceiling tells you that the attic is acting like a solar oven.
Here are four signs of an unventilated or under ventilated attic.
Insulation fibers can get caught inside the diaphragm which will make it harder for the diaphragm to open or achieve a good seal when it is in the closed position.
There are many different options available to provide adequate ventilation to your attic space.
Most building codes require 1 sq.
Guide to attic air ventilation adequate ventilation.
If you don t see any attic vents on the roof or in the eaves you need to add some.
In order to create a consistent flow of cool dry air through your attic you need to make sure the air has a way to come in and go out.
The very essence of a vent is to prevent siphon and vacuum forces in building up in the system it is also to provide an exit for the gases produced in the system.
Ventilation can be accomplished using various products and techniques.
In some circumstances you can have less but we recommend the 1 150 ratio.