I did a search and could not find an answer to my question, so I apologize if it has been asked and answered.
I own a 1932 brick home that had vinyl and aluminum added in the ?1950s over the window trim, soffits, fascia, and the porch. I have removed all the aluminum/vinyl and am in the process of replacing any rot, stripping, priming, painting etc.
I plan on having a new roof placed next - removing the ugly turbine vents (currently the only vents for the roof) - and replacing them with a ridge vent and soffit vents. My questions are:
1) how much surface area should the soffit vents encompass? I was thinking of using the round ones (they would be less conspicuous and easier to install). However, most people I have asked about how many of them to install tell me to instead install a continuous soffit vent.
2) How big of a deal is it to have an underventilated attic? (My wife really hates the look of all the potential soffit vents we have looked at so far.) I understand it should provide lower cooling bills and extend the life of the roof; however this house has been without them for 70 yrs and seems to have done ok. Does underventilation cut the life of a roof short by a year or so, or cut the life in half?
I hope these are answerable questions.