Not too long ago we talked about the importance of ventilation. Because the topic is so integral and important to roofing, we are bringing the topic to the forefront again. Bottom line — a balanced ventilation system with both intake and exhaust vents can maximize an attic vents’ ability to: reduce heat and moisture buildup, prevent ice damn, extend the life of building materials and reduce the load on HVAC systems.
For intake vents we recommend and use Air Vent’s The Edge™ Vent. It provides proper intake ventilation for homes with little or no overhang. It is a roof-top installed, shingle-over intake vent that was designed with roofing contractor input. It can be used to supplement existing soffit or under eave vents as well. The Edge Vent provides nine square inches of net free area per linear foot to balance with ridge vents and other exhaust vents.
As for exhaust vents under clerestory or roof-to-wall metal, we like Lomanco’s Omni Vent®. The air flow acceleration design maximizes ventilation capacity, and the internal aerodynamic curved baffles and external perpendicular omni baffles maximize weather protection. They will fit any roof pitch from a 2/12 to a 16/12. Molded-in visual nail lines and center lines along with the patented fan-folded end plugs mean no accessories, connectors or alterations are needed. Check out this video for more details http://youtu.be/uNCgWgQM-B0.
Roof ventilation especially matters in wet and humid climates and should be thoroughly evaluated prior to large roofing investments. Would you buy brand new tires for your car and then only fill them with air halfway? It’s a ridiculous analogy, but you get the point. Replacing a roof correctly, involves a lot more than nailing down shingles.
As ventilation and roofing experts, your roof’s longevity is a priority. We have been called to the rescue numerous times to address ventilation problems that could have been easily prevented. If you would like the job done right the first time, give us a call. Pacific West Roofing – 503-635-8706.