Turf reinforcement for vegetated slopes and channels
Nedia offers permanent synthetic mats and composite mats that combine natural fibers with synthetic reinforcement. Compare the construction first, then use the individual specification sheet to assess the model for the project.
Permanent turf reinforcement mats
PTRM products use synthetic reinforcement for applications requiring lasting support to established vegetation.
PTRM 270
Polypropylene fiber between two UV-stabilized polypropylene nets, sewn with UV-stabilized thread.
PTRM 340
Green polypropylene fiber enclosed by two heavyweight polypropylene nets and sewn with UV-stabilized thread.
PTRM 440
Green polypropylene fiber with two heavyweight polypropylene nets. Compare the model-specific performance values with PTRM 340 before selection.
PTRM 640
Green polypropylene fiber with three ultra-heavyweight polypropylene nets, securely sewn with UV-stabilized thread.
PTRM 3003D
A woven synthetic mat with a three-dimensional, pyramid-shaped structure for permanent turf reinforcement.
Composite turf reinforcement mats
CTRM products combine a natural fiber matrix with polypropylene reinforcement. The natural fibers biodegrade over time; the synthetic reinforcement remains.
CTRM 400SC
A fiber matrix of 70% agricultural straw and 30% coconut fiber, combined with three polypropylene nets and UV-stabilized stitching.
CTRM 500C
A coconut fiber matrix stitch-bonded between three layers of heavy-duty polypropylene netting.
CTRM 800
A coir composite mat reinforced with biaxial geogrid and heavy polypropylene netting.
Standard roll size: 7.5 ft × 72 ft.
Compare constructions and specification sheets
| Model | Construction | Product data |
|---|---|---|
| PTRM 270 | Polypropylene fiber between two UV-stabilized polypropylene nets, sewn with UV-stabilized thread. | PTRM 270 PDF |
| PTRM 340 | Green polypropylene fiber enclosed by two heavyweight polypropylene nets and sewn with UV-stabilized thread. | PTRM 340 PDF |
| PTRM 440 | Green polypropylene fiber with two heavyweight polypropylene nets. Compare the model-specific performance values with PTRM 340 before selection. | PTRM 440 PDF |
| PTRM 640 | Green polypropylene fiber with three ultra-heavyweight polypropylene nets, securely sewn with UV-stabilized thread. | PTRM 640 PDF |
| PTRM 3003D | A woven synthetic mat with a three-dimensional, pyramid-shaped structure for permanent turf reinforcement. | PTRM 3003D PDF |
| CTRM 400SC | A fiber matrix of 70% agricultural straw and 30% coconut fiber, combined with three polypropylene nets and UV-stabilized stitching. | CTRM 400SC PDF |
| CTRM 500C | A coconut fiber matrix stitch-bonded between three layers of heavy-duty polypropylene netting. | CTRM 500C PDF |
| CTRM 800 | Coir with biaxial geogrid and heavy polypropylene netting. | CTRM 800 specifications |
CTRM 800 technical specifications
Values from Nedia’s 2026 brochure. Select the mat and anchoring using the project design and required site performance.
| Property | CTRM 800 |
|---|---|
| Fiber type | Coir/Geogrid |
| Functional longevity | >3 years |
| Top reinforcement | Biaxial geogrid and heavy polypropylene netting |
| Bottom netting | Heavy polypropylene |
| Bottom mesh size | 5/8 × 5/8 in |
| Minimum mass per unit area — ASTM D5261 | 15.2 oz/yd² |
| Minimum thickness — ASTM D5199 | 0.32 in |
| Dry tensile strength — ASTM D4595 | 1,788 × 1,284 lb/ft |
| Dry elongation — ASTM D4595 | 14 × 15% |
| Wet tensile strength — ASTM D4595 | 1,740 × 1,320 lb/ft |
| Wet elongation — ASTM D4595 | 12 × 11% |
| Water absorption — ASTM D1117 | 137% |
| Short-term flow velocity — ASTM D4491 | 20 ft/s |
| Maximum permissible shear stress | 8.00 lb/ft² |
| Manning’s n roughness coefficient | 0.026 |
| Standard roll size | 7.5 ft × 72 ft |
Select for the site conditions
Consider slope geometry, soil, expected flow and vegetation establishment. Review both unvegetated and vegetated performance where applicable, together with the project safety factors and anchoring design.
Use the model-specific technical sheet and approved project requirements when selecting a mat. Confirm current specification compliance and availability with Nedia for the proposed installation.
View turf-reinforcement installation resources on CADdetails