1. What is R-value Calculation?

R-value measures thermal resistance, indicating how well a material resists heat flow. Higher R-values mean better insulating properties. For Kingspan insulation products, this calculation helps determine the thermal performance of specific thicknesses.

2. How Does the Calculator Work?

The calculator uses the R-value formula:

Where:

• \( R \) — Thermal resistance (m²K/W)
• \( Thickness \) — Material thickness (m)
• \( Thermal\ Conductivity \) — Material's thermal conductivity (W/mK)

Explanation: The R-value is directly proportional to thickness and inversely proportional to thermal conductivity. Thicker materials with lower conductivity provide better insulation.

3. Importance of R-value Calculation

Details: Accurate R-value calculation is essential for building insulation design, energy efficiency compliance, thermal performance assessment, and meeting building regulations for Kingspan insulation products.

4. Using the Calculator

Tips: Enter thickness in meters and thermal conductivity in W/mK. Both values must be positive numbers. Typical Kingspan products have thermal conductivity values between 0.020-0.025 W/mK.

5. Frequently Asked Questions (FAQ)

Q1: What is a good R-value for insulation?
A: Higher R-values indicate better insulation. Building regulations typically specify minimum R-values that vary by climate zone and building type.

Q2: How does thickness affect R-value?
A: R-value increases linearly with thickness. Doubling the thickness doubles the R-value, assuming constant thermal conductivity.

Q3: What are typical thermal conductivity values for Kingspan products?
A: Kingspan insulation products typically have thermal conductivity values ranging from 0.020 to 0.025 W/mK, depending on the specific product type.

Q4: Can this calculator be used for other insulation materials?
A: Yes, the R-value formula is universal and can be applied to any insulation material when you know its thickness and thermal conductivity.

Q5: Why is R-value important in building design?
A: R-value determines the thermal performance of building envelopes, affecting energy efficiency, comfort, condensation control, and compliance with building codes.