Slope Greening Nonwoven Fabric | 14–25 gsm PP Spunbond Cover for Seeded Slopes Product Overview PP spunbond nonwoven cover applied after hydroseeding or soil-spraying on slopes. It retains moisture, prevents seed wash-off during rainfall, and protects seeds from birds — while remaining permeable and breathable, so seedlings are not smothered. Improves germination rate and turf establishment. Weight Selection Guide Weight Slope Application 14 gsm Under 30° Low erosion risk 16