Building Envelope Calculator
Calculate your building envelope performance with our comprehensive calculator. Estimate heat loss, insulation requirements, and energy efficiency metrics for optimal building design.
Step 1: Building Details
Understanding U-Values
U-value measures heat transfer through a building element. Lower U-values indicate better insulation and less heat loss. Typical values range from 0.10 (excellent) to 1.0 (poor).
Step 2: Climate & Energy Details
About Building Envelope
The building envelope includes walls, roof, windows, and floors that separate interior and exterior environments. A well-designed envelope reduces energy consumption and improves comfort.
Building Envelope Results
Estimated Annual Heat Loss Cost
Insulation Performance Comparison
| Insulation Type | Wall U-Value | Roof U-Value | Annual Cost |
|---|
Heat Loss Breakdown
Heat Loss Formula
Q = U × A × ΔT
Heat loss (Q) is calculated by multiplying the U-value (thermal transmittance) by the area (A) and temperature difference (ΔT). Lower U-values and smaller temperature differences result in reduced heat loss and lower energy costs.
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