The two roof ventilation options intake vents and exhaust vents should be placed to take advantage of the natural increased speed of air circulation.
Soffit ven optins for roof with no eave.
Aluminum under eave soffit vent in white carton of 36 model eac16x4w 36 view the master flow intake.
Two simple alternatives to soffit vents can be installed with little more than a circular saw and a hammer.
Finish your roof off with a ridge vent and your attic should be well ventilated.
This is probably the most costly solution to an un vented no overhang roof design and is practical only in cases where the building is being modified for other reasons.
They call this a venting drip edge.
Venting drip edge basically combines continuous soffit vent with an extended drip edge.
If your house has minimal or non existent overhangs that won t accomodate soffit vents or you simply aren t able to install them for some reason then you have a couple of options to provide intake air inlets low near the roof perimeter.
One great alternative to a soffit ventilation system is to install an intake vent right at the lower edge of the roof.
The spaces between the sleepers can probably be detailed so that the roof is vented at the soffit as well as at the ridge see venting a shed roof.
Drip edge vents hang out several inches past the edges of the roof allowing you to trim.
The venting drip edge seems to be the easiest and most common way to go.
Air vent 17 master flow 15 gibraltar building products 7.
22 in x 3 in galvanized steel eave vent item 2180321 model ev223 1 8.
The two most common options are to.
If your roof is simple and straightforward and if aesthetics and truss strength permit then you create a vented roof design by adding 2x sleepers and a new deck and roof.
Aluminum under eave soffit vent in brown.
Master flow 16 in.
New master flow 16 in.
This occurs through the rising of warm air and the falling of cooler air.
Also most vinyl and aluminum siding systems in today s market include components that make venting the soffit easy.
A strip of intake venting built into the roof overhang soffit is the traditional method where space allows.
Focus on the other ventilation.
Provide continuous soffit or eaves intake venting as we describe at roof venting.
In most cases all you have to do is trim a little usually about an inch off the top of the fascia to allow for airflow into the attic.
Generic vent strips are cheap and easy to find and carpenters are familiar with the approach.