Double Insulation In Attic

Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

Double insulation in attic.

Below the joists is 1 5 16 center to center supporting lathe and plaster for ceiling below i am trying to create some walkways and storage space by placing boards on top of the joists. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment. These insulation levels will keep heated air from migrating out in winter. In my attic i currently have usg thermafiber insulation in the 5 75 6 75 between joists with 9 unfaced fiberglass batts on top.

Typically houses in warm weather states should have an r 38 insulation in the attic whereas houses in cold climates should have r 49. 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. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer. For diy attic insulation you ve got two choices.

Share this story via email. Improper installation can damage attic framing promote mold. Both can be added to uninsulated attics or layered over existing material. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.