Are Attic Vents Necessary

Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed.

Are attic vents necessary.

Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. See the benefits of attic ventilation a new roof is more than just shingles. The downside of attic ventilation fans. If you re building a house with an unconditioned vented attic the necessary attic ventilation details are fairly.

Calculate or enter the square footage of the attic or area to be vented. Editorial adviser mike guertin answers this question regarding adequate roof venting. Some vents are necessary but you don t want to needlessly increase the number of roof penetrations. 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.

Ventilation can be accomplished using various products and techniques. Attic ventilation strategies except in some specific cases building codes and shingle warranties require new roofs to be vented. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. You receive the ventilation necessary for the home without creating a higher risk of damage.

Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Good insulation reduces fan effectiveness. Intake vents located at the lowest part of the roof under the eaves allow cool. More than leaks these seams can cause blowouts during a hurricane or allow sparks from a wildfire to enter your home and set it ablaze.

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.