Using spray foam insulation in an attic is a popular energy saving project.
Want foam in attic.
When you insulate the top of your attic with spray foam you re bringing your attic into your home s envelope.
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.
When we seal the attic with spray foam it s as tight as a butter tub.
We mean that literally by the way.
You should never do this.
As a result you can reduce the temperature in your attic by a lot anywhere from 120 degrees to around 95 during peak summer.
Attics with spray foam insulation are so cool.
You can use foam board in the attic.
Spray foam attic insulation as we discussed above is a highly popular method used for insulation in homes but like anything else even other alternatives to spray foam insulation there are both pros and cons to the use of this home insulation material.
You ll also see another safety hazard and code violation.
The installer sprayed foam directly on the metal flues.
In a vented attic all of that expensive airflow is lost to the environment.
Often the r value of fiberglass insulation is too low and requires the rafters to be retrofitted making foam board a better choice.
And the benefits range from much lower utility bills to fewer pests to reduced sound transfer.
It is an excellent installation option for the attic because it is lightweight easy to work with and offers high r values.
If you look closely you ll see two exhaust flues on the left side.
The attic you see in the photo here is a different home but it does have one feature in common besides the spray foam.
Insulate your attic floor unless you intend to use the attic for living space.