Floor Construction Types

Floors above Basements and Crawlspaces Construction:

• 1. 11.5-in wood floor joists @ 24 in o.c.

  2. 11.5-in horizontal air space + mineral fiber batt insulation

  3. 0.75-in wood underlayment

  4. 0.75-in wood subfloor

  5. 0.5-in carpet and fibrous pad

Effective R-values: