Soffit vents without roof vents?

I thought I understood the fundamentals of venting systems, but perhaps not. I have several areas in my new home that is under construction where there are soffit vents, but no associated roof vents in sharing attic space. I also see some roof vents without any soffit vents sharing attic space. Is this right?



See where the guy is on the ladder across the front of the house? Above those three windows are soffit vents.

If the room is completely vaulted and finished on the inside, do we still need roof and soffit vents? Perhaps I just don't understand?

TIA, Tony

 

What a nice house. Makes me want to come and help. You have alot of dormers on this home, so most of these will not have roof vents. But in the fascia, siding, soffit process, you will have soffit vents every so many feet. They keep things aired out up under the soffits. Your real roof is up and behind, and there will be roof vents there. You can look at your blue prints and see right away where they want the roof vents put. Have a Happy Home.

 

T.L. Dot, I'm not a professional, just been fixing things most of my life (68) so let me tell you what I think I know about it. I believe you are supposed to have screened soffit vents at regular intervals in every soffit around the house. I believe that's standard, anything else seems unusual to me and would have to be explained by the contractor. Most builders nowadays use ridge vents for evacuation of heat and normal ventilation. I live in the South and have found homes built in the 50s with soffits, but no vents. I can't figure that since temperatures can easily reach 150 degrees or more in any attic (at least Down South). I have installed both thermostatically controlled, power vents and non-electrical turbine vents in those situations. It would depend on your housing location and allgnment with the prevailing winds. My present house faces East but I live 300 feet from the Bay and have an almost daily North/South, on-shore, off-shore breeze. The house should be oriented facing South in order to obtain the benefit of the prevailing air flow. Since it isn't , and the house had turbine vents, I installed one power vent which kicks on at 105 degrees Farenheit. Overhead fans in each room are of additional benefit to reduce air-conditioning requirements or move warm air from the ceiling downward in the winter. That's probably enough information to answer your question. Good luck in your new home. Ole' Den