How To Vent Low Slope Attic Without Soffits

Draw it on the roof deck.

How to vent low slope attic without soffits.

The venting drip edge seems to be the easiest and most common way to go. I need additional exhaust ventilation in my roof with the planned installation of a whole house fan in the attic of my home located in sf bay area. However with only two 1 ft x 2 ft gable roof vents i ll need an additional 7 sq ft of exhaust vents. And compact roof assemblies are clearly the only acceptable base for low slope roof assemblies.

One great alternative to a soffit ventilation system is to install an intake vent right at the lower edge of the roof. Smart vent a special roof eaves vent product that provides a 3 4 opening about 6 above the top of the roof drip edge. There are methods for doing rof cavity insulation with no ventilation. Determine the shape of the hole needed for the vent.

Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. In my opinion many of the innovative. Remove the shingles in the area where the vent is to be installed. Venting solutions for roofs with no overhang or soffit.

With old homes it can be very difficult to properly ventilate the attic for a variety of reasons. The other strategy is cellulose insulation which is dense blocks airflow and contains salts that inhibit mold growth. You mention exhaust vents shouldn t exceed intake vents in the roof for proper circulation. Another plastic venting product fits under.

A ridge vent without a soffit vent just doesn t work. They call this a venting drip edge. But if you don t have eaves or if you have shallow soffits like me ventilation can be a challenge. Drip edge vents hang out several inches past the edges of the roof allowing you to trim 1 inch from the top of the fascia to allow air into the attic.

Install special roof intake venting products that work at the lower edge of the roof decking underneath the first course of shingles. Hot air exhaust vents located at the peak of the roof allow hot air to escape. If i had an older home without soffits i would strongly consider just completely air sealing the attic and adding foam insulation totally removing the need for ventilation.