3 posts / 0 new
Last post
Finished Attic insulation

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?

Timothy Miller
Re: Finished Attic insulation

Howdy, how large are the rafters? 2by ? Are you sure there is any insulation in the rafters? For venting to work you must have an airspace above the insulation and for air to enter each rafter bay at the bottom and to exit at the top, if no attic space at the peak of the roof. A continuous ridge cap vent at the top and a continuous soffit vent at the bottom works well.

Re: Finished Attic insulation

Do you have a pic of the attic you can post?

Sponsored Stories

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.