Insulation Recommendations

North Carolina energy code minimum insulation levels:

(Note: Trade-offs are required by N. C. Code if a component R-value falls below minimum.) All components must be installed to comply with manufacturers and N. C. model energy code specifications.

	NC Building Code Mountains Zone 11	NC Building Code Foothills Zones 8 & 9
Floor	R-19	R-19
Band-joist cavity	R-19	R-19
Wall	R-19 (R-16 min.)	R-14
Log Wall 20 lb./sq. ft.	R-9	R-9
Ceiling	R-38	R-30
Slab	R-5 Heated slab: R-7	R-5 Heated slab: R-7

Windows - Double pane or double pane with Low-E glazing - Note: square footage must not exceed code specifications for applicable zone.

Doors - metal insulated or wood with weather-stripping and storm door.

Headers - Insulate rim joist spaces that will be inaccessible after the subfloor is installed.

- Insulate all exterior window and door headers using rigid insulation board or unfaced fiberglass insulation.

- Insulate all exterior wall T-posts and corner posts prior to installing wall sheathing.

- Install insulation board on dormer sidewalls and knee walls prior to roof framing.

- Check ceiling insulation and make sure it is in contact with the top plate and sheetrock to avoid thermal bypasses.