Attic Ventilation In Mn

Attic ventilation installation pine island minnesota route 60 plumbing heating and cooling is a professional heating and cooling company based out of pine island minnesota.

Attic ventilation in mn.

Understanding attic ventilation is essential if you own a home in mn it can be a confusing topic. First you insulate your home to stay comfortable and reduce utility bills but then you have vents installed in your attic that let the warm air out even in the dead of winter. In other words the entire vent opening doesn t count as vented space. 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.

Many home attics in minnesota have some insulation. 401 2 ventilation required every occupied space shall be ventilated by natural means in accordance with section 402 or by mechanical means in accordance with section 403. What s up with that. The principles of science come to the rescue.

Increasing attic insulation to an r 50 can provide a good barrier to heat loss. That said air resistance and interference such as vent grates reduces the area of true ventilation.