Key Features
What Cool Roofs Calculator Does
Details
Overview
The Cool Roofs Calculator, developed by Lawrence Berkeley National Laboratory, quantifies the energy savings and urban heat reduction benefits of installing high-albedo roofing materials. By modelling how reflective roofs reduce cooling loads and decrease surface temperatures, the tool helps building owners, property managers, and city planners evaluate the economic and environmental returns on cool roof investments.
Key Features
- Energy savings calculations: Estimates annual heating and cooling energy use reduction based on building type, climate zone, and roof characteristics
- Urban heat reduction modelling: Quantifies surface temperature decreases and neighbourhood-scale heat island mitigation potential
- Albedo impact assessment: Models how roof reflectivity affects cooling demand and thermal comfort at different scales
- Cost-benefit analysis: Lifecycle cost comparisons accounting for energy savings, maintenance, and roof replacement schedules
Who Is It For?
Building owners, facilities managers, municipal sustainability planners, and energy auditors seeking to quantify the financial and climate benefits of cool roof retrofits. The tool requires only basic building and climate information, making it accessible to practitioners without specialized thermal modelling experience.
Getting Started
Visit coolroofs.lbl.gov to access the calculator. Input your building’s location, roof area, and current roofing type to generate customised savings estimates. Lawrence Berkeley National Laboratory also publishes technical documentation on cool roof performance and albedo values for common roofing materials.