Insulating a strapped attic floor
Need to insulate an attic floor with 24oc/12in high truss joists that have been strapped with 1x3 strapping, 16 oc across the underneath of the joists. 1/2 blue board is attached under the strapping and veneer plaster makes up the ceiling. 2 coats of Behr ceiling paint is on the plaster.
My concern. The strapping creates a space under the joists, so it'll make the joist bays "connected". Air could communicate from bay to bay if I were to use unfaced roxul batts which is my preference because I have plenty. I also have some cellulose that I could spread as my first layer to fill the voids that the strapping made.
What are my options?
Posted Tue, 02/19/2013 - 10:42
Edited Tue, 02/19/2013 - 10:42
Other Questions in Energy efficiency and durability