Polyurethane and polyicynene can be used for both finished and open walls, attics and on the undersides of floors. Both seal air leaks and insulate in one step and have a high effective R-value. Fiberglass, mineral wool, cellulose, vermiculite, perlite. Vapor barrier is installed separately. Used for unfinished attic floors.
Vapor barrier is installed separately.
Used for unfinished or finished attic floors, undersides of floors and finished frame walls. There can be problems with settling. Polyurethane Polyisocyanurate Used primarily on wall framing, under concrete slab floors and on masonry basement walls. To ensure fire safety, these materials must be covered with fire-rated gypsum wallboard. To achieve a high effective R-value seams must be taped.