Attic Ventilation No Soffit Vents

Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed.

Attic ventilation no soffit vents. Install special roof intake venting products that work at the lower edge of the roof decking underneath the first course of shingles. Rose a research architect at the building research council at the university of illinois replies. As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in. This creates a natural air flow by drawing in the air from outside pushing it up and out through the vent at the top of the house.

The most common way to add ventilation to an attic is by installing air intakes in the soffits and putting an outlet at the gable of the house. The solution is to add baffles which allow air to flow past the insulation photo 9. How to vent an attic with no eaves the function of soffit vents. Normal vented air likes to enter the attic lower down near the bottom third of the attic and as it passes through it will exit higher up near the top third of the attic space.

This is called passive ventilation. A ridge vent without a soffit vent doesn t work and here s why. For an attic without soffit vents you may have the option to use gable vents instead. By virtue of their design and location on the roof ridge vents are predominantly exhaust devices.

Problems when roof has no overhang. Baffles are available at home centers. Venting solutions for roofs with no overhang or soffit. For proper ventilation it isn t enough for air to simply get into your attic.

Smart vent a special roof eaves vent product that provides a 3 4 opening about 6 above the top of the roof drip edge. When the attic becomes part of the home to be heated and cooled open wall gable vents and roof vents are no longer feasible but the underside of the roof the sheathing and rafters can still get. That means air can t flow from the soffit vents to the roof vents.