How Much To Add Attic Ventilation

Adding attic vents is a simple matter of cutting holes and installing vents.

How much to add attic ventilation.

Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool. So how much ventilation should you have. Photos 1 6 show how it s done. One reason for the lack of agreement over attic ventilation is the tremendous variation in climate across north america.

Rarely will you find a building practice that works everywhere. The downside of attic ventilation fans. To keep air flowing your roof needs just the right amount of attic ventilation. Good insulation reduces fan effectiveness.

Attic fan installation costs an average of 593 most homeowners can expect to pay between 369 and 876 depending on the quality of the unit you choose location and add ons the project can run as little as 200 or as much as 1 300. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Add a dab of cement to secure the shingles to the attic vent cover base.

We just ran ductwork to our upstairs and it is so wonderful. However the utility of attic ventilation fans is actually quite a controversial topic. For instance attic ventilation is used widely in cold climates to evacuate the warm moist air that escapes from the living space below. 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.

The reason we did it was because we wanted to sell our house. Without exception you should talk to a professional to determine what your home requires. As the ventilation helps moderate the temperatures in the attic this may also help moderate the temperature in the rest of the home it helps prevent moisture buildup in your attic which during colder months can help prevent condensation issues that can affect the materials in the attic space especially insulation. Attic ventilation keeps the air moving and stops mold from growing but too much ventilation can be just as bad as having none.

Ventilation can be accomplished using various products and techniques. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Intake vents located at the lowest part of the roof under the eaves allow cool.