I own a late 1940's colonial in Maryland. The attic is finished (at least to 1940's standards) with a full walk up staircase and pine tongue and grove flooring. It currently has original insulation covered by a pressed paper/wood sheeting attached to the rafters. We have less than 10 year old asphalt singles. There are no vents in the attic (it does have two double hung windows). We have central air with a return and two supplies in the space. However, it becomes too hot in July and August to make it comfortable as a livable space.
My question is how to make it a comfortable even during the hottest days of the year. My current plan is to put in a ridge vent, soffit vents, and insulation baffles to channel the air. To finish I will put in the best insulation that will fit in the rafters and then drywall over top of that.
Is this the best option? Are soffit vents a bad idea for a finished attic? If not how can I best connect the soffit vents and to the baffles so that there is no outside air leaking into the attic space?