I need some help with determining how I should ventilate my attic as it’s always super hot up there in the summer and the main part of my house has basically no venting. Below you should see a diagram of my ranch-style single story house with it broken up into four sections (A-D). Sections B & C are the original house, sections A & D are later additions. When sections A & D were added on the roofing was left in place but small pass-throughs were cut that are barely wide enough for a man to get through. That being said, I think I basically have three separate areas that I need possibly different sets of advice for (you tell me). Here are the facts:
- I have no soffit vents that I know of
- Section A has a power vent and 1 non-power vent, however the non-power vent could be for the bathroom ventilation fan
- Section D has four non-power vents and a gable vent
- Section B has 1 no-power vent, however this could be for a bathroom ventilation fan
- Section C has no ventilation at all
- Section D is a cathedral ceiling and is basically inaccessible in the attic because of how tight it is
- The square footages for each section are A – 440, B – 1,560, C – 430, D – 420, Total – 2,850
- I don’t know the pitch of the roof but you can easily walk around on it, standard ranch style roof
- Ridge length for section A is 13’, for section B is 33’, for section C is 12’
- The roof has hips on the ends of sections A and C and the front of section B is a hip. Section D is an A-roof that ties into the ridge of section C. I tried to draw this but it may not be clear.
- The drawing is actually to scale.
So what would be the best/easiest way to vent this puppy? I’m thinking install soffit vents for each section and then a ridge vent on section B. Leave everything else the way it is. Is that sufficient?
Also, my power vent is quite loud. It’s nailed to the trusses and causes a loud vibration. I tried adding rubber grommets but it’s still kind of loud. How can I fix this if I need to keep it?