Using icynene spray foam as your attic insulation will turn your attic into a conditioned space.
Spray foam insulation on attic ceiling.
When we seal the attic with spray foam it s as tight as a butter tub.
Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls.
You ll also see another safety hazard and code violation.
Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic.
If you leave the insulation in the attic floor after insulating the roofline the attic will be cooler in winter than if you remove the insulation.
The attic you see in the photo here is a different home but it does have one feature in common besides the spray foam.
If you look closely you ll see two exhaust flues on the left side.
One huge benefit of the spray foam insulated attic is that conditioned air leakage from the ac furnace duct system is contained and used to condition the attic.
However in a traditionally insulated attic insulation on the ceiling the attic is vented.
When spray foam is installed on the underside of the roof deck the attic space is insulated from heat that otherwise would be entering the attic.
This will allow for optimal operation of your hvac equipment as well as aid in early detection of situations such as roof leaks and wind driven moisture intrusion.
Thus the air in the attic is connected with the air in the house.
You should never do this.
How to insulate your attic with foam it green spray foam kits are quicker and easier to use plus you get a seamless air barrier and high r value in just 1 inch.
But a common reason to put spray foam on the roofline is to avoid having to air seal the attic floor.
Choose foam it green spray foam insulation kits and don t settle for less than you deserve.
It will also help keep any duct leaks within the conditioned space of your attic.
The installer sprayed foam directly on the metal flues.
It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing.
The insulation reduces wildly high temperature spikes and so the attic becomes a conditioned part of the home like any other room.