Putting R30 In An Attic

Lay the batts perpendicular to the joists so they do not compress the insulation below.

Putting r30 in an attic.

Existing 3 4 inches of insulation. Better than spray foam thermal break and relatively consistent r 30. Add insulation to attic. I ve always said adding insulation to your attic is some of the best money you can spend to make your house more energy efficient but whether to use faced or unfaced insulation is a great question.

For loose fill cellulose this translates to a total depth ranging from 8 inches. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. Wear a long sleeve shirt gloves eye protection and a dust mask. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Here s how to use 3 layers of 2 inch polyiso foam board to meet code and keep your ne. I would highly recommend a vented roof if you plan to use a metal through fastener roof like r or u panel which is extremely common in texas. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary. Recommended insulation levels for retrofitting existing wood framed buildings.

I installed r30 rock wool batts in my rafter bays with a vented roof and conditioned attic space. The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home.