Open cell spray polyurethane foam ocspf and closed cell spray polyurethane foam ccspf insulation sprayed to the underside of roof sheathing is a popular strategy for increasing roof insulation levels in all climate zones.
Spray foam insulation under roof deck.
Spray polyurethane foam is approved for use as an insulation material in contact with soil but we do not know how foam scraps would perform as soil fill therefore cannot recommend its use for this purpose.
It really should be called spray foam insulation and air barrier.
A properly done spray foam job not only insulates but also greatly reduces the air leakage of a home.
The spray foam can also serve as the thermal and vapor control layers in both new and retrofit construction.
Moisture generated indoors or that infiltrates into the home is responsible for the bulk of the moisture in an attic insulated with spray foam on the underside of the roof sheathing.
Lstiburek takes blame for bad language.
But that only works if the installer can get it into the places where most of the air leakage happens.
Spray foam insulation is an incomplete name.
Polyurethane spray foam metal roof insulation the spray can be basically applied on top or bottom of the metal roofing surfaces.
Install spray foam insulation along the underside of the roof deck to create an insulated unvented attic which can provide a conditioned space for hvac equipment that is located in the attic.
Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls.
When the choice is made to insulate along the underside of the roof deck spray foams have advantages over other insulation types because of the ability of spray foams to effectively air seal complex assemblies.
This construction approach was first used in the 1970s and it has been implemented much more widely since it was first included in the international code council s icc model building code in 2007 irc section 806 4.
The standard means of disposal of spray foam scraps is to dispose in normal construction waste to a landfill.
Financially speaking this spray is a great option especially when you need to renovate your roof after the application.
Compared to the fiberglass batts this insulation is much better.