R-Value
R-Value measures the thermal resistance of insulation materials, with higher values indicating better insulating properties and greater energy efficiency.
R-Value is the standard measure of thermal resistance used to evaluate insulation materials in construction. The 'R' stands for resistance to heat flow, and higher R-Values indicate better insulating performance. In Denver's climate with cold winters and hot summers, choosing appropriate R-Values is critical for energy efficiency and comfort.
Why It Matters for Denver Homes
Denver's elevation and temperature extremes demand proper insulation. The International Energy Conservation Code (IECC) requires specific minimum R-Values for different parts of your home: R-49 to R-60 for attics, R-13 to R-21 for walls, and R-30 for floors over unconditioned spaces. Meeting these standards reduces heating and cooling costs significantly—properly insulated homes can save 15-20% on energy bills annually.
Common Applications
- Attic insulation: Blown-in cellulose or fiberglass batts at R-49 minimum
- Wall cavities: R-13 to R-21 depending on wall thickness and insulation type
- Basement walls: Rigid foam or spray foam at R-15 to R-19
- Crawl spaces and floor systems: R-30 insulation between floor joists
- Around windows and doors: High R-Value materials to prevent thermal bridging
Related Terms
Rigid Foam Insulation
Rigid foam insulation consists of stiff panels of polystyrene, polyisocyanurate, or polyurethane foam that provide superior insulating value and moisture resistance for walls, roofs, and foundations.
Vapor Barrier
A vapor barrier is a moisture-impermeable material installed in building assemblies to prevent water vapor from penetrating walls, floors, or ceilings and condensing within insulation or structural components.
Energy Code Compliance
Energy code compliance involves meeting minimum standards for insulation, air sealing, window performance, and HVAC efficiency as mandated by the International Energy Conservation Code (IECC).