How To Ventilate An Attic

Don t avoid ventilating your attic for fear you re letting cold air into the house.

How to ventilate an attic.

Good ventilation allows the heat and moisture to escape. Most building codes require a ratio of 1 150 ventilation space to. Things have been ok low energy bills house very comfortable. Noticed one of the attic vents was not working.

Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Told that the 2 attic power vents are the only attic ventilation i have the house does have vented soffits every other soffit cover is vented. That keeps your attic dry and reduces. That cuts cooling costs and prolongs shingle life.

In the summer good attic ventilation reduces heat buildup. Once this happens the negative pressure that is created in the house pulls hot outside air in causing the air conditioner to work harder. Proper insulation and air sealing also keeps attics. 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.

Your actual living space is sealed and insulated at the attic floor the attic is outside this envelope. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. In the winter warm moist air seeps into the attic from the living space below. Help purchased home 8 years ago with 2 power attic vents.