In an unvented attic scenario to limit air leakage as well as any associated condensation at the roof line a continuous air barrier is required.
Problems with spray foam insulation in attics.
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.
Spray foam insulation can solve problems that other insulation materials can t.
Insulating with spray foam insulation at the roof line will cause moisture problems with the roof sheathing.
In a vented attic all of that expensive airflow is lost to the environment.
What goes right and what goes wrong.
The problems with spray foam insulation in attics comes down to the initial installation.
One of those problems is moving the building enclosure from the drywall ceiling of a home to the roofline.
Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic.
Moisture is also another huge issue when it comes to spray foam insulation in an attic.
It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing.
Below we are going to list the most common problems with using spray foam insulation in your home s attic or in any area inside of your home.
If the spray foam is installed correctly then you can look forward to a home that stays substantially warmer costs less to heat.
Placement errors during installation attics are the main spots in a home that are filled with unusual shapes gaps and spaces where air bubbles have the potential to form when you spray foam insulation.