What is Title 24
California's Title 24 Building Energy Efficiency Standards require "cool roof" products on most roof installations and replacements. The goal is to reduce building energy consumption by requiring roofing materials that reflect more sunlight and emit more heat than traditional dark-colored products.
What qualifies as a cool roof
A cool roof must meet minimum values for solar reflectance (how much sunlight the surface reflects) and thermal emittance (how efficiently the surface releases absorbed heat). In Climate Zone 12, which covers the Central Valley, steep-slope residential roofs must have a minimum aged solar reflectance of 0.20 and thermal emittance of 0.75, or a Solar Reflectance Index (SRI) of at least 16.
What this means for your roof replacement
If you are replacing your roof in Turlock, Modesto, or anywhere in the Central Valley, the new roofing material must be Title 24 compliant. This applies to both residential and commercial properties. All materials DeHart Roofing installs meet or exceed these requirements.
Cool roof options
- Cool-rated asphalt shingles (Owens Corning Duration COOL, GAF Timberline Cool Series)
- Concrete and clay tile (most profiles meet requirements naturally)
- Metal roofing with reflective coatings
- White TPO or reflective coatings for flat roofs
Does Title 24 cost more
Cool-rated shingles cost approximately 5-10 percent more than standard shingles. However, the energy savings over the life of the roof typically offset the added cost within a few years. Tile and metal roofs often meet requirements without a premium.
Questions about Title 24 compliance? Contact DeHart Roofing for a free consultation.