How To Ventilate An Attic Without Soffit Vents

Another plastic venting product fits under.

How to ventilate an attic without soffit vents.

Active ventilation is what it sounds like there s something that creates a push pull effect to actively draw the air in and actively push the air out. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them. Place all the roof vents on the same side of the roof. Focus on the other ventilation you have in the attic.

Weird attic layouts may be a part of it. Use eye brow vents that are on the top of the sloping roof surface near the soffit eave area. 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. Complete coverage of the attic floor along with sealing air leaks will ensure you get the best performance from your insulation.

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. To completely cover your attic floor with insulation out to the eaves you need to install rafter vents also called insulation baffles. Imagine there s a screened window on one side of your attic with a big box fan on the roof facing outward. With old homes it can be very difficult to properly ventilate the attic for a variety of reasons.

An attic s intake vents are most commonly installed directly in the soffit either as individual vents spaced every few feet or as one continuous perforated soffit running the entire length of. Construct a hidden roof intake vent at the top of the building wall by removing the wall top trim or top siding board cutting away any building sheathing or blocking at the wall top nailing 1 spacer blocks 16 on center nailing a new spaced out wall top trim board along the roof eaves and screening the opening against insects. In an attic without soffit vents you can add insulation in the corners and the wedges between the slope of the roof and the floor of the attic which serves as the ceiling for the room below.