Are Attic Vents Necessary

Good insulation reduces fan effectiveness.

Are attic vents necessary.

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. You receive the ventilation necessary for the home without creating a higher risk of damage. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. 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.

Editorial adviser mike guertin answers this question regarding adequate roof venting. If you re building a house with an unconditioned vented attic the necessary attic ventilation details are fairly. The downside of attic ventilation fans. Some vents are necessary but you don t want to needlessly increase the number of roof penetrations.

The shape size and location of roof ridge vents make it impossible for rodents to access your house. 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. Intake vents located at the lowest part of the roof under the eaves allow cool. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed.

Attic ventilation strategies except in some specific cases building codes and shingle warranties require new roofs to be vented. Calculate or enter the square footage of the attic or area to be vented. 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. It allows air to move out of the attic naturally.

Ventilation can be accomplished using various products and techniques.