vacuum panel · 100mm
R 14.29
U 0.069 W/m²·K
vacuum panel, 100 mm — R 14.29
100 mm divided by a conductivity of 0.007 gives an R-value of 14.29. The U-value is 0.069, so a square metre leaks 1.38 W across a 20-degree difference.
Standards it meets
- passive house 0.15
- Korean central-region wall 0.17
- loose standard 0.30
- Material
- vacuum panel
- Thickness
- 100 mm
- Thermal conductivity
- 0.007 W/m·K
- Thermal resistance
- 14.29 m²·K/W
- U-value
- 0.069 W/m²·K
- Heat lost per square metre
- 1.38 W
- As concrete
- 22.86 m
Thickness for the same performance
This is the number that shows what insulation is worth. Matching 100 mm of XPS with concrete alone would take 5.7 metres of it. No one builds a wall like that — which is why a concrete building only gets warm once a thin layer of insulation is added.
- phenolic foam286 mm
- rigid polyurethane329 mm
- extruded polystyrene400 mm
- graphite EPS443 mm
- white EPS514 mm
- glass wool529 mm
- mineral wool571 mm
- cellulose600 mm
- timber1857 mm
- plasterboard2571 mm
- concrete22857 mm
Nearby cells
Same material, other thicknesses
Same thickness, other materials
How to read this
- Thermal resistance is the thickness in metres divided by the conductivity. Bigger is better.
- The U-value adds 0.17 of surface resistance and then flips the total. Smaller is better.
- Resistances add across layers, so a whole wall is the sum of its parts.
- Conductivity varies by product; the values here are typical for the material.
Frequently asked questions
Q. What is the R-value of 100 mm of vacuum panel?
14.29 — 100 mm in metres divided by a conductivity of 0.007.
Q. And the U-value?
0.069. That is 14.46 — the resistance plus 0.17 of surface — turned upside down, and a square metre leaks 1.38 W across 20 degrees.
Q. How much concrete would match it?
22.86 metres.
Q. Which standards does it meet?
At 0.069 it clears 3 of them.