How To Ventilate An Attic Without Soffits

The molded polystyrene baffles available at home centers and lumberyards for about 1 each form channels that hold insulation at bay and direct incoming air upward.

How to ventilate an attic without soffits.

Typically you would have a gable vent on each end of the attic. But the drip edge vent actually extends that roof line by about 2 inches and creates a continuous soffit. In our project we replaced all our 4 x 16 in. Rectangular vents are the easiest to install photos 4 6.

The venting drip edge seems to be the easiest and most common way to go. Drip edge vents hang out several inches past the edges of the. For an attic without soffit vents you may have the option to use gable vents instead. They call this a venting drip edge.

Vents 56 sq. One great alternative to a soffit ventilation system is to install an intake vent right at the lower edge of the roof. Finally to ensure that the airway to the vent remains open staple a ventilation baffle to the plywood sheathing in each rafter bay. 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.

You d have to extend or actually reshingle the bottom layer of shingles at the edge. Smart vent a special roof eaves vent product that provides a 3 4 opening about 6 above the top of the roof drip edge. With old homes it can be very difficult to properly ventilate the attic for a variety of reasons. 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.

His dilemma how to adequately ventilate his attic without vented soffits. So if you did want to ventilate an attic you could use a type of vent called a drip edge vent which would require a little bit of carpentry. Loyal reader ken has an attic space with only air exhaust points a vented ridge and no air intake. I finally was able to make contact with the manufacturer of the open foam like material used under my ridge as a vent.

Continuous strip soffit vents allow perfectly even ventilation along the eaves photos 7 and 8 but they re difficult to retrofit in an existing soffit. Of net free vent area or nfva with 8 x 16 in. Install special roof intake venting products that work at the lower edge of the roof decking underneath the first course of shingles. Intake vents located at the lowest part of the roof under the eaves allow cool.