Programmatic SEO
EPS lambdaLambda value EPS
Reference page for EPS insulation and its thermal conductivity in wall build-ups.
Used for quick thermal checks of walls, roofs, and floors.
Reference lambda value for graphite eps.
Shown as a 10 cm reference layer for comparison.
Lower lambda means better insulation performance.
Lambda reference: Graphite EPS
This page highlights the thermal conductivity of the material and shows how it behaves in a simple comparison layer.
| Layer | Material | Thickness | Lambda | R |
|---|---|---|---|---|
| Layer | Material | Thickness | Lambda | R |
|---|---|---|---|---|
| Reference layer |
Reference layer
Facade insulation
|
10 cm | 0.031 W/mK | 3.23 m²K/W |
| Surface resistances | 0.17 m²K/W | |||
| Total resistance | 3.40 m²K/W | |||
What lambda means here
R = d / lambda
Lambda describes how well the material conducts heat. A lower value usually gives a better insulating effect for the same thickness.
U = 1 / (Rsi + sum(R layers) + Rse)
This reference page uses the material's catalog value and a simple 10 cm comparison layer.
Related material pages
How To Calculate U Value
Open how to calculate u value for the next step in this journey.
Open next stepInsulation Thickness Calculator
Open insulation thickness calculator for the next step in this journey.
Open supportOpen the calculator
Use the main calculator to edit layers, compare materials, and export a custom result.
Open calculatorWall calculator
Switch to the dedicated wall page for broader wall guidance and faster comparisons.
Open wall pageR-value vs U-value
Compare the two thermal metrics before choosing a wall or roof build-up.
Open comparisonMaterial note
EPS is frequently used in facade and retrofit search queries.
Use case note
Compare EPS against mineral wool when you want to balance thickness and thermal performance.