TCS GP90 woven geotextile is a standard grade, slit-film polypropylene membrane designed for everyday separation tasks. Used under driveways, paths, patios, and sub-bases, it prevents aggregate and soil layers from mixing, maintaining strength and drainage.
Key Uses
- Separation layer for driveways, patios, paths, shed bases, and hard-standing areas
- Prevents aggregate loss and rutting in sub-bases
- Suitable for domestic landscaping, equestrian surfaces, and light access roads
- Inert polypropylene construction resists naturally occurring acids, alkalis, bacteria, and fungi
- Permeable to water to aid site drainage
Benefits
- Standard grade woven - ideal balance of strength, handling, and cost
- Reduces long-term maintenance by protecting the integrity of the sub-base
- Available in multiple roll sizes to match project scale and reduce waste
- Handles easily on site and cuts cleanly with a knife or shears
Technical Specifications (GP90 fabric)
| Property |
Test Method |
Unit |
Value |
| Material |
– |
– |
Woven slit-film polypropylene |
| Tensile Strength MD |
EN ISO 10319 |
kN/m |
16 |
| Tensile Strength XD |
EN ISO 10319 |
kN/m |
11 |
| Elongation at Break MD |
EN ISO 10319 |
% |
20 |
| Elongation at Break XD |
EN ISO 10319 |
% |
19 |
| CBR Puncture Resistance |
EN ISO 12236 |
N |
1,500 |
| Dynamic Cone Drop |
EN ISO 13433 |
mm |
18 |
| Characteristic Opening Size (O90) |
EN ISO 12956 |
µm |
250 |
| Permeability Normal to Plane |
EN ISO 11058 |
l/m²·s |
15 |
(Figures are average values tested to EN ISO standards. Users should confirm suitability for specific designs.)
Size Options & Coverage
-
4.5m x 100m - 450 m² (Full Roll) – Best for large areas and continuous runs
-
2.25m x 50m - 112.5 m² (Mini Roll) – Easy handling; suited to medium-size projects
-
2.25m x 25m - 56.25 m² (Mini Roll) – Ideal for paths, small patios, or shed bases
-
4.5m x 10m - 45 m² (Handy Pack) – Short runs and patching jobs
-
1m x 14m - 14 m² (Micro Roll) – Narrow trenches, repairs, or edging
(All variants are cut from the same GP90 fabric — performance remains identical.)
Installation
- Prepare the surface, removing sharp stones or debris.
- Lay the membrane flat, overlapping adjacent rolls by 300–500 mm depending on ground conditions.
- Secure with fixing pegs or ballast to prevent movement.
- Backfill with the specified aggregate, ensuring even coverage.
- Cut to shape with a sharp knife or heavy-duty scissors.
FAQs
What is GP90 mainly used for?
It’s designed for soil separation in sub-base construction, preventing fines migration and helping maintain load-bearing performance.
Is it permeable?
Yes, it allows water to pass through at 15 l/m²·s while stopping soil movement.
Which way up should it go?
Performance is identical either side, focus on flat, wrinkle-free placement with correct overlaps.
How is GP90 different from non-woven membranes?
Woven GP90 is stronger in tension and ideal for separation/stabilisation. Non-wovens provide better filtration and cushioning in protection layers.
Can it handle contact with chemicals or bacteria in soil?
Yes, the polypropylene is inert and unaffected by naturally occurring soil chemicals, bacteria, and fungi.
