Comparison

Comparison of the most popular floor insulations on the market

feature polyethylene
25kg/m2
IZO-FLOOR
polyethylene 40kg/m2
organic insulation (milled wood)
load resistance -
(0,9T)
+
(high - up to 6T)
+
low water absorption + +
(extremely low -
- 0,08%)
-
(high - 40%)
ability to level out unevenness -
+
(up to 4,5mmm)
+
smooth surface + + -
weight
(important when transporting)
+ + -
durability - + +
ASSESSMENT
+++ ++++++ +++

The above comparison implies that:
Polystyrene is definitely more load-resistant than polyethylene.
Polystyrene features extremely low absorbability with water compared to natural wood layers.