Insulation·rigid polyurethane 150mm
rigid polyurethane · 150mm
R 6.52
U 0.149 W/m²·K

rigid polyurethane, 150 mm — R 6.52

150 mm divided by a conductivity of 0.023 gives an R-value of 6.52. The U-value is 0.149, so a square metre leaks 2.99 W across a 20-degree difference.

Standards it meets

  • passive house 0.15
  • Korean central-region wall 0.17
  • loose standard 0.30
Material
rigid polyurethane
Thickness
150 mm
Thermal conductivity
0.023 W/m·K
Thermal resistance
6.52 m²·K/W
U-value
0.149 W/m²·K
Heat lost per square metre
2.99 W
As concrete
10.43 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 panel46 mm
  • phenolic foam130 mm
  • extruded polystyrene183 mm
  • graphite EPS202 mm
  • white EPS235 mm
  • glass wool241 mm
  • mineral wool261 mm
  • cellulose274 mm
  • timber848 mm
  • plasterboard1174 mm
  • concrete10435 mm

Nearby cells

rigid polyurethane 120mm
R 5.22
rigid polyurethane 200mm
R 8.7
phenolic foam 150mm
R 7.5
extruded polystyrene 150mm
R 5.36

Same material, other thicknesses

rigid polyurethane 10mm
R 0.43
rigid polyurethane 20mm
R 0.87
rigid polyurethane 30mm
R 1.3
rigid polyurethane 50mm
R 2.17
rigid polyurethane 70mm
R 3.04
rigid polyurethane 100mm
R 4.35
rigid polyurethane 120mm
R 5.22
rigid polyurethane 150mm
R 6.52
rigid polyurethane 200mm
R 8.7
rigid polyurethane 250mm
R 10.87
rigid polyurethane 300mm
R 13.04
rigid polyurethane 400mm
R 17.39

Same thickness, other materials

vacuum panel 150mm
R 21.43
phenolic foam 150mm
R 7.5
rigid polyurethane 150mm
R 6.52
extruded polystyrene 150mm
R 5.36
graphite EPS 150mm
R 4.84
white EPS 150mm
R 4.17
glass wool 150mm
R 4.05
mineral wool 150mm
R 3.75
cellulose 150mm
R 3.57
timber 150mm
R 1.15
plasterboard 150mm
R 0.83
concrete 150mm
R 0.09

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 150 mm of rigid polyurethane?

6.52 — 150 mm in metres divided by a conductivity of 0.023.

Q. And the U-value?

0.149. That is 6.69 — the resistance plus 0.17 of surface — turned upside down, and a square metre leaks 2.99 W across 20 degrees.

Q. How much concrete would match it?

10.43 metres.

Q. Which standards does it meet?

At 0.149 it clears 3 of them.