Calculate U-Value for Wall
U-value, or thermal transmittance, is a crucial factor in building physics, measuring how much heat transfers through a structure. Calculating U-value for walls ensures energy efficiency and comfort in your space.
- Select the wall material from the dropdown.
- Enter the thickness of the wall in millimeters.
- Enter the density of the wall material in kg/m³.
- Click ‘Calculate’.
The U-value is calculated using the formula: U = 1 / (∑(t / λ)), where t is the thickness of each layer and λ is the thermal conductivity of the material.
| Material | Thickness (mm) | Density (kg/m³) | U-Value (W/m²K) |
|---|---|---|---|
| Brick | 200 | 1800 | 0.85 |
| Concrete | 250 | 2300 | 0.72 |
| Wood | 100 | 400 | 0.14 |
| Material | Thermal Conductivity (W/mK) |
|---|---|
| Brick | 0.8 |
| Concrete | 0.9 |
| Wood | 0.16 |
- Consider using insulation materials to reduce U-value.
- Regularly inspect and maintain your walls to prevent damage and heat loss.
What is the standard U-value for a wall?
The standard U-value for a wall varies depending on the material and construction. In the UK, Building Regulations require new walls to have a U-value of 0.3 W/m²K or less.
How can I improve my wall’s U-value?
You can improve your wall’s U-value by adding insulation, using high-performance materials, or improving the overall construction of the wall.