Does My Attic Need To Be Vented

The ventilation that controls moisture from condensation and regulates the temperature in your attic relies on air circulation.

Does my attic need to be vented.

That said air resistance and interference such as vent grates reduces the area of true ventilation. What your attic probably does not have is a set of code compliant stairs. The model building codes allow both vented and unvented roof assemblies. Here s the answer to the question posed in my article title.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. To convert your attic to living space you cannot provide access via a ladder. Intake vents located at the lowest part of the roof under the eaves allow cool. In other words the entire vent opening doesn t count as vented space.

Our thermostat is nearby this half closet. Calculate or enter the square footage of the attic or area to be vented. However in a traditionally insulated attic insulation on the ceiling the attic is vented. During winter the primary cause of attic moisture issues stem from warm moist air infiltrating into the attic space from the inhabited areas and condensing on cold surfaces.

But when it comes down to it it can get a little complicated. Does the furnace and evaporator coils need to be vented like this or can i close up this hole and help reduce air loss into the attic. In a properly designed passive system air enters through the soffit. The easy answer is yes your attic should absolutely be vented.

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. 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. Each home is unique carrying challenges and structural requirements to match. Your attic may presently have a fixed ladder a pull down ladder or no ladder at all.

Attics or roofs can be designed and constructed to be either vented or unvented in any hygro thermal zone map 1. When done correctly attic venting can reduce the potential for condensation in winter and summer. My question is this. Yes using spray foam we have added your attic to the conditioned space.