Certificate 25/006/1783/3
Detailed datasheet

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 Date created 2026-10-13
 Holder SOPREMA SAS
15 rue de St Nazaire
CS 60121
67025 STRASBOURG CEDEX
France
 Certificate no. 25/006/1783/3
 Family Extruded polystyrene (XPS)
 Commercial brand(s) (products)
Products Purposes
SopraXPS 370 Dallage
 Plant(s) Savigny sur Clairis - France (89)
 Certified thermal conductivity λD = 0.033 W/(m.K)
Puce Certified thermal resistance
Thicknesses
mm 		Thermal resistances
m².K/W
40 mm 1.20
50 mm 1.50
60 mm 1.80
70 mm 2.10
80 mm 2.40
90 mm 2.70
100 mm 3.00
110 mm 3.30
120 mm 3.60
130 mm 3.90
140 mm 4.20
150 mm 4.50
160 mm 4.80
170 mm 5.15
180 mm 5.45
190 mm 5.75
200 mm 6.05
210 mm 6.35
220 mm 6.65
All resistances
Puce Critical compressive strength
Thickness
mm 		Rcs
(≥ kPa)		 ds mini
(%)		 ds maxi
(%)		 Modulus of elasticity in use
(≥ MPa)
from 40 to 220  mm 220 1.0 1.7 9.80
 Other certified characteristics
Characteristic Value
Thickness tolerance T1
Compressive stress CS(10\Y)300
Long-term water absorption by total immersion WL(T)0.7
Freeze/thaw resistance FTCD1