Retrofit to a conditioned attic in WI
I have searched and read as many of these types of articles as I can, keeping in mind the dates of the articles to see what is the most recent information.
I had a blower door test on my 4-year-old 2-story home (2016 build) and found that insulation was done poorly with lots of air leaks. I would like to get my AC unit in conditioned space and tighten up what I can as a result of the blower door test. Based on what I have read, I will list what I have going on.
Located in Milwaukee, WI
Truss attic with blown-in insulation.
Radiant in-floor heat throughout the house.
High-Velocity air conditioner in the attic.
Asphalt Shingles with ridge vent.
Vapor barrier (plastic) was stapled to the bottom of the trusses prior to drywall going up.
25 leaky can lights going to the attic along with 5 ceiling fans.
HVR on the 1st floor.
From what I read, I need to remove the baffles and block the air venting from the soffits. Use closed-cell foam to spray in-between each truss on the bottom side of the roof sheathing. Install rigid foam (size & type?) to the trusses to reduce thermal bridging & use as fire stopper.
Do I need to install a supply & return in the newly conditioned space with all the leaky can lights? No forced air is done in the winter due to radiant floor heating.
Do I do anything special with the ridge vent?
Thank you in advance as I try to get this correct.
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