Attic Ventilation In Winter

Intake vents located at the lowest part of the roof under the eaves allow cool.

Attic ventilation in winter.

While heat migrates in the summer because your attic is acting as a giant pressure cooker in the winter the attic space is colder allowing more room for the heat to rise and bring all that warm cozy. In the winter warm moist air seeps into the attic from the living space below. Proper attic ventilation in winter prevents mold and mildew growth safeguarding your family against these harmful contaminants. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the.

It also prevents the warm damp and dark environment that pests love keeping rodents and insects from nesting in your. Good ventilation allows the heat and moisture to escape. That keeps your attic dry and reduces ice dams. Attic vent fans pull the cool air from outside into the attic to chill the air during the summer months and aide in the cooling of the home.

During cold winter months the attic vent fan is not. Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. The more attic ventilation in winter the better. The main reason that people believe vents should be covered in the winter is to prevent the loss of heat in the home.

That cuts cooling costs and prolongs shingle life. See the benefits of attic ventilation a new roof is more than just shingles. Eliminating moisture problems through attic ventilation works to improve indoor air quality. Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.

Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. You would think that venting an attic would be counterintuitive in the winter or cold months. Not true for all parts of canada.

In certain regions most of the data is from the national research council in the saskatoon area it appears that the only effective way to stop continuous accumulation of frost in the attic is to not ventilate at all during the worst of winter but to seal. Poor insulation is usually the culprit although if you enter the attic on sunny winter day your attic space can be warmed by the sun more than your furnace. If the attic is too warm during the winter the precipitation frozen on your roof will melt drip down to your gutters and then refreeze.