How To Ventilate An Attic

In the winter allowing a natural flow of outdoor air to ventilate the attic helps keep it cold which reduces the potential for ice damming snow that melts off a roof from an attic that is too warm and then re freezes at the gutters causing an ice dam that can damage the roof.

How to ventilate an attic.

In the summer good attic ventilation reduces heat buildup. The unmentioned evil of attic ventilation fans is that they often pull interior air conditioned air up from the home into the attic through the ceiling via wires pipes and other air leak penetrations. How to determine whether you need better attic ventilation. If there are asphalt shingles on your roof the attic must be ventilated to comply with the terms of the manufacturer s warranty.

Don t avoid ventilating your attic for fear you re letting cold air into the house. In the winter warm moist air seeps into the attic from the living space below. Most building codes require a ratio of 1 150 ventilation space to. Things have been ok low energy bills house very comfortable.

Help purchased home 8 years ago with 2 power attic vents. That cuts cooling costs and prolongs shingle life. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. That keeps your attic dry and reduces.

Proper insulation and air sealing also keeps attics. Good ventilation allows the heat and moisture to escape. Once this happens the negative pressure that is created in the house pulls hot outside air in causing the air conditioner to work harder. Noticed one of the attic vents was not working.