FLOW combines a dimpled recycled HDPE drainage core with a filter geotextile. The geotextile allows water to enter the core while limiting the migration of fine soil particles into the drainage voids. The flow path within the core conveys water towards the drainage outlets specified in the project.
Explore the roll, surface and layer details. Select a photograph to enlarge it.
FLOW+ · Curved edge and layer section 01 / 04
PRODUCT DATA
Technical properties
2 November 2026
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SNTDRAIN FLOW - Geocomposite drainage sheet
Component
Technical property
Method / conditions
Unit
FLOW 8
FLOW 8+
FLOW 10+
150
200
250
150
200
250
400
650
Sheet
Dimple height
Geometrical measurement
mm
8
10
Polymer type
Manufacturer declaration
-
Recycled HDPE
Roll width × length
EN 1848-2
m
2.00 (±1%)x 20 (±1%)
Compressive strength
EN ISO 25619-2
kN/m²
150 (±10%)
200 (±10%)
250 (±10%)
150 (±10%)
200 (±10%)
250 (±10%)
400 (±10%)
650 (±10%)
GTX (Geotextile)
Geotextile colour
Manufacturer declaration
-
White
Grey
Tensile strength MD/CMD
EN ISO 10319
kN/m
MD 8 (-1.5)
CMD 7 (-1.5)
MD 8 (-1.5)
CMD 7 (-1.5)
MD 8 (-1.5)
CMD 7 (-1.5)
MD 6.6 (-0.7)
CMD 6.6 (-0.7)
MD 6.6 (-0.7)
CMD 6.6 (-0.7)
MD 6.6 (-0.7)
CMD 6.6 (-0.7)
MD 6.6 (-0.7)
CMD 6.6 (-0.7)
MD 6.6 (-0.7)
CMD 6.6 (-0.7)
Static puncture resistance (CBR)
EN ISO 12236
N
1300 (-260)
950 (-110)
Characteristic opening size O90
EN ISO 12956
µm
105 (±33)
150 (±30)
Dynamic perforation / hole diameter
EN ISO 13433
mm
34 (+8)
40 (+7)
Water permeability normal to the plane VH50
EN ISO 11058
m/s
0.08 (-0.024)
0.08 (-0.015)
GCO (Geocomposite)
In-plane water flow / 20 kPa
EN ISO 12958-1 i=1
L/(s·m)
1.8 (-0.2)
1.9 (-0.3)
2 (-0.2)
1.9 (-0.2)
2 (-0.2)
2.2 (-0.2)
3.85 (-0.4)
4 (-0.4)
In-plane water flow / 50 kPa
EN ISO 12958-1 i=1
L/(s·m)
1.7 (-0.2)
1.8 (-0.2)
1.9 (-0.2)
1.8 (-0.2)
1.9 (-0.2)
2.1 (-0.2)
3.75 (-0.38)
3.9 (-0.4)
In-plane water flow / 100 kPa
EN ISO 12958-1 i=1
L/(s·m)
1.3 (-0.15)
1.5 (-0.15)
1.7 (-0.2)
1.6 (-0.15)
1.8 (-0.2)
2 (-0.2)
3.6 (-0.35)
3.75 (-0.35)
Tensile strength MD/CMD
EN ISO 10319
kN/m
MD 9 (-2)
CMD 7 (-2)
MD 10 (-2)
CMD 8 (-2)
MD 12 (-2)
CMD 10 (-2)
MD 9 (-2)
CMD 7 (-2)
MD 11 (-2)
CMD 9 (-2)
MD 13 (-2)
CMD 11 (-2)
MD 13 (-1.3)
CMD 12 (-1.2)
MD 17 (-1.7)
CMD 15 (-1.5)
CE marking
EN 13252
--
Yes
Operating temperature
Manufacturer declaration
°C
-30 / +80
Durability
EN 13252 Annex B
-
Durable for 50 years in natural soil at 25°C and 4≤pH≤9, provided there is no attack by substances or organisms.
Applications
For foundation walls, below-ground structures and details requiring a drainage layer. Product selection takes account of normal load, hydraulic gradient and the drainage outlet arrangement.
Installation
Orient the filter towards the incoming water. Maintain filter continuity at joints and connect the lower edge to the drainage outlet. Fixings and overlaps must suit the waterproofing and the project detail.
DOCUMENTS
Technical data sheets
Product information and technical table. Two-page PDF.
