The soffit vents allow convective air movement from the soffits of the residence to the ridge vent.
Insulating and ventilating an attic.
It can do both.
In the summer good attic ventilation reduces heat buildup.
For diy attic insulation you ve got two choices.
A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.
That keeps your attic dry and reduces.
That cuts cooling costs and prolongs shingle life.
In the winter warm moist air seeps into the attic from the living space below.
Ridge vent must me installed per the manufactures instructions.
At first it may seem odd to add insulation for warmth and then purposely allow cold air to enter the attic through vents but this combination is the key to a durable and energy efficient home.
Good ventilation allows the heat and moisture to escape.
Insulation at least r 38 or more is there for heating and.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
With a finished attic insulation must help keep the attic areas comfortable.
Loose fill or batt the common term for blanket insulation.
How to determine whether you need better attic ventilation.
One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home.
That means insulating the attic floor only not the walls and having vents in the roof.
Best ventilation is open soffit venting to a open vented ridge vent.
Both can be added to uninsulated attics or layered over existing material.