PIR Board Thickness to match ThermaCote’s performance at 1mm

PIR boards, typically have thermal conductivities ranging from 0.022 W/m·K to 0.026 W/m·K, depending on factors such as facings and manufacturing processes.

Impact on Required Thickness

The required thickness to achieve a specific R-value depends on the thermal conductivity (λ) of the insulation material. Using the formula:

Thickness=R×λ

Applying this:

1. For λ = 0.022 W/m·K:

   Thickness=1.87m2⋅K/W×0.022W/m⋅K =0.04114m=41.14mm

2. For λ = 0.024 W/m·K:

   Thickness=1.87m2⋅K/W×0.024W/m⋅K =0.04488m=44.88mm

3. For λ = 0.026 W/m·K:

   Thickness=1.87m2⋅K/W×0.026W/m⋅K =0.04862m=48.62mm

Conclusion

The required thickness of a PIR board to match ThermaCote’s R-value of 1.87 m²·K/W varies between 41.14mm and 48.62mm, depending on the board’s specific thermal conductivity.