The single highest-ROI insulation upgrade for Asheville homes. Replace settled fiberglass with air-sealing spray foam and watch your temperature swings and air leakage drop 30-40% the first month.
The attic is where the most energy escapes from a Asheville home. In summer, attic temperatures hit 130-150°F; in winter, the warm air from your living space rises and leaks through gaps in the fiberglass batts. Spray foam stops both problems by air-sealing every joist bay, every vent penetration, every gap around chimneys and pipes.
Open-cell on the roof deck (preferred) — this brings the attic inside the conditioned envelope. HVAC ducts in the attic are now in conditioned space. Eliminates ice damming, dramatically reduces energy use. Most Asheville retrofits use this approach.
Open-cell on the attic floor (budget alternative) — this keeps the attic vented but insulates better than fiberglass. Less effective than roof-deck foam but ~30% cheaper.
Most homes pay back the install in 4-6 years through energy savings alone, plus the comfort improvement is immediate.