The lambda-value describes the thermal conductivity of a material. The better the conductivity, the worse the insulation.
Metal usually has a high conductivity (don't touch a hot iron!), Styrofoam has a low conductivity (you may serve hot coffee in astyrofoam cup)
Our stones are made from Neopor, a styrofoam with an improved insulation, and have the best performance/price ratio of all building materials.
| || || ||Sand-lime-brick (Density 1600 g/l)||0,790|| ||Lightweight concrete (PP3-0,5)||0,140|| ||Neopor (Density 25g)||0,031|| |
The R-value describes the insulation value considering the width of the material. It is obvious, that 2cm of Neopor insulate better than 1 cm.
This value acts contrary to the Lambda-value, here the higher the value, the better the insulation.
Our R-value calculator lets you calculate on your own and gives a more precise description of the above mentioned values.