Roof Ventilation No Soffits

But if you don t have eaves or if you have shallow soffits like me ventilation can be a challenge.

Roof ventilation no soffits.

One great alternative to a soffit ventilation system is to install an intake vent right at the lower edge of the roof. This is usually a 3 8 inch piece of plywood that is underneath the overhanging portion of the roof that extends beyond the outside wall. Master flow 2 in. 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.

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. Poor insulation is usually the culprit although if you enter the attic on sunny winter day your attic space can be warmed by the sun more than your furnace. With a soffit venting is not much of a challenge. For an attic without soffit vents you may have the option to use gable vents instead.

More ways to filter. However if the home has no soffit it is quite a different matter. A passive ventilation system should have air inlets at the base of the roof usually in the soffits and outlets in the peak or gables. 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.

The venting drip edge seems to be the easiest and most common way to go. Smart vent a special roof eaves vent product that provides a 3 4 opening about 6 above the top of the roof drip edge. Typically you would have a gable vent on each end of the attic. Rose a research architect at the building research council at the university of illinois replies.

By virtue of their design and location on the roof ridge vents are predominantly exhaust devices. It will primarily depend on the roof. They call this a venting drip edge. Venting solutions for roofs with no overhang or soffit.

Some home designs do not have a soffit. The total venting space should equal 1 150 of the floor space. If you have an attic with no soffit vents but 2 unobstructed gable vents then you will probably be ok on ventilation. Resin circular mini wall louver soffit vent in white 6 pack model rlsc2 view the master flow intake vents 9 28 9 28.

A ridge vent without a soffit vent doesn t work and here s why. Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.