How Much Does R40 Insulation Cost in Washington, District of Columbia?

What you get at each price level

• Basic

  $1.25 – $3.02 per sq ft

  Loose-fill fiberglass blown over the attic floor to an R-40 settled depth, eave baffles and depth markers set

• Standard

  $1.47 – $3.56 per sq ft

  Blown fiberglass to R-40 with rafter baffles at the eaves, hatch dam, clearance kept around flues and recessed lights

• Premium

  $1.83 – $4.45 per sq ft

  Blown fiberglass to R-40 with rafter baffles at every eave bay, hatch dam, insulated and weatherstripped hatch, depth markers