Putting R30 In An 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.

Putting r30 in an attic.

Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling. The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. I installed r30 rock wool batts in my rafter bays with a vented roof and conditioned attic space.

Better than spray foam thermal break and relatively consistent r 30. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary. 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. 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 here s a situation where a homeowner what looks like many years ago added insulation they added a three inch layer but. For loose fill cellulose this translates to a total depth ranging from 8 inches. Existing 3 4 inches of insulation. Lay the batts perpendicular to the joists so they do not compress the insulation below.

Recommended insulation levels for retrofitting existing wood framed buildings. Here s how to use 3 layers of 2 inch polyiso foam board to meet code and keep your ne.