Roof Construction Types

Exterior Coverings:

• • 0.25-in asphalt composition shingles

  • 0.25-in wood roof shakes

  • 0.5-in clay roof tile

  • 0.25-in lightweight concrete roof tile

  • 0.5-in gravel roofing

Roof Construction:

• 1. exterior covering

  2. 0.125-in felt building membrane

  3. 0.625-in plywood sheathing

  4. 5.5-in wood roof rafters @ 24 in o.c.

  5. sloped air spaces + mineral fiber batt insulation

  6. 0.5-in gypsum wallboard

Roofs with Expanded Polystyrene Insulation Construction:

• 1. exterior covering

  2. 0.125-in felt building membrane

  3. 0.625-in plywood sheathing

  4. 1-in expanded polystyrene insulation

  5. 5.5-in wood roof rafters @ 24 in o.c.

  6. sloped air spaces + mineral fiber batt insulation

  7. 0.5-in gypsum wallboard

Effective R-values:

Note: in the Home Energy Scoring tool metal roofs are modeled as composition shingles.