Double Insulation In Attic

So it s time to pay close attention to what s happening up there.
Double insulation in attic. Loose fill or batt the common term for blanket insulation. 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. 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. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment.
Both can be added to uninsulated attics or layered over existing material. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer. Typically houses in warm weather states should have an r 38 insulation in the attic whereas houses in cold climates should have r 49. Improper installation can damage attic framing promote mold.
These insulation levels will keep heated air from migrating out in winter. For diy attic insulation you ve got two choices. Share this story via email. In my attic i currently have usg thermafiber insulation in the 5 75 6 75 between joists with 9 unfaced fiberglass batts on top.