Somewhat vented scissor truss roof
I have lurked here for the past couple of months and have not found a definitive answer to my question. I’ll get to the question further down the post, right now I’ll give you the details on the house. Forgive my ignorance that will soon become obvious. We live in central Wisconsin zone 5.
My wifes father built this house in ’68-69. The roof is the aforementioned scissor-truss (2×4) style with a 4/12 roof and 2/12 sloped ceiling. There is no ridge vent, but only continuous soffit vents and a small venting fan. The house is 25×45 ranch with no hips, valleys, gables, etc. There is, however, a flat ceiling above the bedrooms on the south end of the building. The ceiling drops about 24” and that area of the house has the conventional roof truss design.
I’m trying to figure out how to insulate the scissor truss portion of the attic. I’ve downloaded some of the CAD files (4-00412) on this type of design. I dont have very much space to insulate, and the omission of a ridge vent has me as confused as a fawn-caught-in-the-headlights.
I’m sure you are going to fire off a boatload of questions, I will answer to the best of my limited knowledge and insufficient experience. I can also take pics to better illustrate what I’m trying to say. I appreciate any/all advise. Thank you.