Roof Ventilation No Soffits

The total venting space should equal 1 150 of the floor space.

Roof ventilation no soffits.

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. Some home designs do not have a soffit. However if the home has no soffit it is quite a different matter. Install special roof intake venting products that work at the lower edge of the roof decking underneath the first course of shingles.

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. The venting drip edge seems to be the easiest and most common way to go. For an attic without soffit vents you may have the option to use gable vents instead. More ways to filter.

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. If you have an attic with no soffit vents but 2 unobstructed gable vents then you will probably be ok on ventilation. With a soffit venting is not much of a challenge. It will primarily depend on the roof.

Master flow 15 amerimax home products 1 deflect o 1 gibraltar building products 1 mounting position. One great alternative to a soffit ventilation system is to install an intake vent right at the lower edge of the roof. Venting solutions for roofs with no overhang or soffit. By virtue of their design and location on the roof ridge vents are predominantly exhaust devices.

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. Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic. 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. Smart vent a special roof eaves vent product that provides a 3 4 opening about 6 above the top of the roof drip edge. 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. Enter square footage calculate or enter the square footage of the attic or area to be vented.

Resin circular mini wall louver soffit vent in white 6 pack model rlsc2 view the master flow intake vents 9 28 9 28. They call this a venting drip edge.