Insulation·rigid polyurethane 200mm
rigid polyurethane · 200mm
R 8.7
U 0.113 W/m²·K

rigid polyurethane, 200 mm — R 8.7

200 mm divided by a conductivity of 0.023 gives an R-value of 8.7. The U-value is 0.113, so a square metre leaks 2.26 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
200 mm
Thermal conductivity
0.023 W/m·K
Thermal resistance
8.7 m²·K/W
U-value
0.113 W/m²·K
Heat lost per square metre
2.26 W
As concrete
13.91 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 panel61 mm
  • phenolic foam174 mm
  • extruded polystyrene243 mm
  • graphite EPS270 mm
  • white EPS313 mm
  • glass wool322 mm
  • mineral wool348 mm
  • cellulose365 mm
  • timber1130 mm
  • plasterboard1565 mm
  • concrete13913 mm

Nearby cells

rigid polyurethane 150mm
R 6.52
rigid polyurethane 250mm
R 10.87
phenolic foam 200mm
R 10
extruded polystyrene 200mm
R 7.14

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 200mm
R 28.57
phenolic foam 200mm
R 10
rigid polyurethane 200mm
R 8.7
extruded polystyrene 200mm
R 7.14
graphite EPS 200mm
R 6.45
white EPS 200mm
R 5.56
glass wool 200mm
R 5.41
mineral wool 200mm
R 5
cellulose 200mm
R 4.76
timber 200mm
R 1.54
plasterboard 200mm
R 1.11
concrete 200mm
R 0.13

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 200 mm of rigid polyurethane?

8.7 — 200 mm in metres divided by a conductivity of 0.023.

Q. And the U-value?

0.113. That is 8.87 — the resistance plus 0.17 of surface — turned upside down, and a square metre leaks 2.26 W across 20 degrees.

Q. How much concrete would match it?

13.91 metres.

Q. Which standards does it meet?

At 0.113 it clears 3 of them.