Quote:
Originally Posted by syncroid
Sorry, probably out of the norm, but my husband Syncroid asked me to take a look at your dilemma. I work with contractors and builders on a daily basis (I'm a realtor, don't bust me too hard) and have worked with a lot of renovation homes, especially Eichler's in the South Bay. Ok, enough about the creds......
Since you have an already established composite material on the exterior of the roof, I have seen the best insulation between beams with a foam based material. I have a great local company that can talk you through the pros and cons.
With regard to the the T&G wood interior material on 6 foot span- it will sag. You need to install additional support.
Hope this helps.
Wife of Syncroid
Leslie Heinrichs & Ian Humphries - Home |
Just might drop you a line Leslie thanks. I've worked with the Dow Thermax professionally and for a four inch cross section beats fiberglass but, it's pricey (around $60 for 4 inches of 4x8 and its foil backed.
I guess my biggest worry is whether I really need the air gap or not with the 2" roof substrate. Even uninsulated, we've never had issues. I've heard of screwing and glueing the rigid and calling it a day.
I wonder if I put in an air gap without airflow if that might not be worse.