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.

How to vent a roof without attic. But before you cut any holes plan the locations of the attic vents. A vaulted roof offers open living space directly below the rafters because there are no horizontal ceiling joists. 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 there are more than one they are centered between the rafters and installed at regular intervals in a horizontal line along the roof.

This is easy to accomplish in simply. 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. I have roof vents so i have roof ventilation. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them.

The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. Adding attic vents is a simple matter of cutting holes and installing vents. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. 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.

Static vents come in a variety of different styles and sizes but are all non motorized vents installed near the roof ridge to allow for unobstructed flow of air from the attic. Vent the roof deck. 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. Photos 1 6 show how it s done.

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. Although there is no separate attic to vent air circulation is still necessary. Whole house fans powered attic fans.