Step 5 attach the vent to the soffit photo by merle henkenius.
How do you vent a roof without soffit vents.
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.
Continue installing additional strip vents until you reach the far end.
Let me first say that if you actually do have roof overhangs and have the space to add soffit venting then i would strongly recommend that you first add soffit ventilation because the soffit ridge vent system is the best passive venting that currently exists.
These specialty vents do not affect the.
Roof eave venting on roofs with no overhang or soffit how to correct improper or inadequate attic or under roof ventilation in buildings detecting and correcting attic condensation and preventing ice dam leaks in buildings how to correct improper or inadequate attic or under roof ventilation in buildings.
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.
Ice damming is caused by the warmer attic space melting the snow down to the cooler eaves where it freezes.
Authoritative expert building diagnostic and repair advice toxic black mold and.
You can use a shingle over vent at the bottom or mid roof mid roof being higher up than the potential ice damming.
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.
For more information on ventilation and moisture control read this article i wrote on proper attic ventilation it s my position that you should have a proper ventilation system in your attic and that you should always take the time to air seal the floor of the attic.
Drip edge vents hang out several inches past the edges of the.
With a soffit venting is not much of a challenge.
Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof.
However if the home has no soffit it is quite a different matter.
Some home designs do not have a soffit.
It will primarily depend on the roof.
Properly vented attic space will not do that because its theoretically the same temp as it is outside.
Use a cordless drill driver to secure the vent to the soffit with in long no.
If you don t have soffits or your roof style doesn t allow for soffit vents some homeowners will consider a drip edge vent.
Even without soffit venting it is important to provide an air gap at the soffit level to help keep the roof deck dry.
