Soffit vents for third story dormer or not?

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Old 05-24-13, 10:44 PM
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Soffit vents for third story dormer or not?

I have a tudor house with a spiral staircase leading to a third story dormer with a flat roof. There is no soffit vents and it is usually very very hot or very coldup there even insulated. The wood has started to rot out because of humidity... Now my question is if I should drill holes for soffit vents or should I leave it? I was thinking about putting in the vent baffles all the way around in the 2x6 cavities and insulating on top of them. Is this a good idea or does anyone have a better idea? Thank you!
 
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Old 05-24-13, 10:54 PM
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Old houses often can't be made to fit today's standards without some major renovations. You likely can't have both ventilation and insulation in the same space. You might try some round vents but there is no way to know if there are obstructions unless you ceiling joists and the rafters are exposed.

In any case, ventilation may solve your humidity problem but it will likely not make it any cooler in the summer and would likely make it colder in the winter.

That being said, i don't know if we really have enough info to say one way or the other.
 
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