How To Vent A Roof Without Attic

Although there is no separate attic to vent air circulation is still necessary.

How to vent a roof without attic.

If the attic space is going to be conditioned either for living or mechanical purposes or if a home design calls for a vaulted ceiling provision r806 3 in the international residential code calls for the roof deck above the space to be vented continuously from the eave to the ridge. The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. When the attic becomes part of the home to be heated and cooled open wall gable vents and roof vents are no longer feasible but the underside of the roof the sheathing and rafters can still. A vaulted roof offers open living space directly below the rafters because there are no horizontal ceiling joists.

This is easy to accomplish in simply. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them. Take for example ridge vents. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all.

But before you cut any holes plan the locations of the attic vents. I have roof vents so i have roof ventilation. Photos 1 6 show how it s done. If two passive vents are too close then while one vent is expelling hot attic air the other vent may actually be sucking in the same hot air that the other vent is pushing out.

If there are more than one they are centered between the rafters and installed at regular intervals in a horizontal line along the roof. Vent the roof deck. 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. Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior.

If you have a ridge vent you also want to make sure that the passive vents are preferably at least 25 down the roof away from the ridge vent. These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and automatically exhausts the attic space. Even without soffit venting it is important to provide an air gap at the soffit level to help keep the roof deck dry.