Insulation·concrete 10mm
concrete · 10mm
R 0.01
U 5.674 W/m²·K

concrete, 10 mm — R 0.01

10 mm divided by a conductivity of 1.6 gives an R-value of 0.01. The U-value is 5.674, so a square metre leaks 113.48 W across a 20-degree difference.

Standards it meets

Not up to any of them yet

Material
concrete
Thickness
10 mm
Thermal conductivity
1.6 W/m·K
Thermal resistance
0.01 m²·K/W
U-value
5.674 W/m²·K
Heat lost per square metre
113.48 W
As concrete
0.01 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.

  • vacuum panel0 mm
  • phenolic foam0 mm
  • rigid polyurethane0 mm
  • extruded polystyrene0 mm
  • graphite EPS0 mm
  • white EPS0 mm
  • glass wool0 mm
  • mineral wool0 mm
  • cellulose0 mm
  • timber1 mm
  • plasterboard1 mm

Nearby cells

concrete 20mm
R 0.01
plasterboard 10mm
R 0.06

Same material, other thicknesses

concrete 10mm
R 0.01
concrete 20mm
R 0.01
concrete 30mm
R 0.02
concrete 50mm
R 0.03
concrete 70mm
R 0.04
concrete 100mm
R 0.06
concrete 120mm
R 0.08
concrete 150mm
R 0.09
concrete 200mm
R 0.13
concrete 250mm
R 0.16
concrete 300mm
R 0.19
concrete 400mm
R 0.25

Same thickness, other materials

vacuum panel 10mm
R 1.43
phenolic foam 10mm
R 0.5
rigid polyurethane 10mm
R 0.43
extruded polystyrene 10mm
R 0.36
graphite EPS 10mm
R 0.32
white EPS 10mm
R 0.28
glass wool 10mm
R 0.27
mineral wool 10mm
R 0.25
cellulose 10mm
R 0.24
timber 10mm
R 0.08
plasterboard 10mm
R 0.06
concrete 10mm
R 0.01

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 10 mm of concrete?

0.01 — 10 mm in metres divided by a conductivity of 1.6.

Q. And the U-value?

5.674. That is 0.18 — the resistance plus 0.17 of surface — turned upside down, and a square metre leaks 113.48 W across 20 degrees.

Q. How much concrete would match it?

0.01 metres.

Q. Which standards does it meet?

At 5.674 it does not clear any of them yet.