Using spray foam with a metal roof. What is the options?

— Leon Cruywagen Reeds Spring, MO

Answered by Harold Remlinger, AIA, LEED AP, NCARB on August 12, 2014

My thermostat is near our air return but is at least 4 degrees off,

— Patricia J Darrow Camden, TN

Answered by Doug Garrett on July 7, 2014