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I need to add some additional exhaust venting to my attics, along with some along the soffit as well. I need some knowledge on a few things as I can't seem to find answers for them on the interwebs:

  1. Can continuous soffit vents be retrofitted without pulling off the fascia?
  2. The roof will need to be replaced in the next 10 years so I do not want to install a ridge vent. If I add roof vents right below the peaks, do I need to seal off the gable vents?
  3. Would installing a ridge vent now be just as easy as installing a few box vents? If so, what is the cost difference?
  4. If I install a ridge vent, will it be reused or destroyed when a new roof gets installed?
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4. Ridge vents basically have no cost when installed with a new roof. My wife and I had a new roof installed two years ago and the quote was the same with or without. The only question was whether there was enough "ridge" for sufficient venting. –  John Gaughan Dec 14 '13 at 5:17
    
I am actually having a new roof installed very soon. Insurance is covering it due to wind damage it recently endured. The ridge vent being enough is a concern of mine. I need to do the calculations. –  Evil Elf Dec 14 '13 at 12:28
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1 Answer

1, What do you mean by retrofitted? Do you have continuous vent or do you want to add them?

2 why would you add new vents if the gable end vents are in place and working? Is there obstructed air flow? Are there rafter vents in place near the soffit edge? Is there an adequate insulation bed? Is there too much near soffit/rafter line?

3 My opinion Ridge vent is easier, cordless saw depth set to decking. 20-35 mins to cut and remove material necessary (normal size roof). Installation Roll out vent and Cap shingle . Depending on your skill set much easier than putting in 4 vents and reshingling and boring 4 new holes.

4 Ridge vent is so cheap that there is no need to reuse and it would have been weathered for that length of time, so don't reuse.

Don White.

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Currently I have soffit with very small or no vents as it is. So I am wondering how hard it would be to install them in the existing soffit, without pulling the soffit down to cut, reseal, and repaint. According to the 1/150 rule, I do not have nearly the amount of exhaust vent area in the gables alone. I will need to add more. I wondered about the ridge vent installation. It looks like it would fairly easy as opposed to installing multiple roof vents and sealing/dealing with the flashing and shingles. I'm right to assume that if I add a ridge vent, the gable vents must closed, correct? –  Evil Elf Sep 14 '13 at 12:22
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