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Application
Methods

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A commitment to the earth’s environment through innovative materials and excellent technical support has earned BonTerra a world-class recognition for leadership. Not all potential erosion is the same.

Soil type, length of slope, moisture availability, fertility, and degree of the slope are only a few of the variables to consider when planning erosion prevention measures. BonTerra provides a variety of blanket types and application methods for different situations.

Slopes

  • Grade and smooth slope. Apply fertilizer and seed prior to installing blankets.
  • Anchor blankets at top of the slope. Use anchoring method „A“ for 4:1 slopes, „B“ for 3:1 slopes and „C“ for 2:1 and steeper slopes
  • Unroll blankets in direction of water flow. Place blankets loosely and in full contact with the soil.
  • Overlap blanket edges approximately 5 cm (2″) and staple. Note: install blankets so edge overlaps are shingled away from prevailing wind.
  • Overlap blanket ends 15cm (6″), upper blanket over lower blanket, and staple using five staples (anchor „A“)
  • Cut excess blanket with scissors and anchor at end of the slope. Use anchoring method „A“ for 4:1 slopes and „B“ for slopes 3:1 or steeper.

Channels

  • Grade and smooth channel. Apply fertilizer and seed prior to installing blankets.
  • Anchor blankets at top of channel („B“). Backfill with check slot material. For culvert outfalls, place blanket at least 30 cm (12″) upstream from pipe opening.
  • Install a blanket in the centre of the channel, in the direction of water flow. Additional blankets are installed at the edges of this center blanket.
  • Construct check slots with soil, gravel, or stone, in the middle (15 m / 45 ft.) and end of each blanket.
  • Overlap side channel blanket edges 10 cm (4″) over the center channel blanket and staple.
  • Anchor the top edge of side channel blankets („B“).
  • Anchor the terminal ends of blankets in a check slot

Shorelines

  • Grade and smooth channel. Apply fertilizer and seed prior to installing blankets.
  • Install blankets during the lowest possible water level.
  • Install blankets horizontally along shoreline if one width is sufficient.
  • Secure top edge of the blanket („B“).
  • Overlap blanket ends and staple („A“).
  • Anchor bottom edge of the blanket („B“).
  • For shorelines steeper than 3:1 slope, install blankets vertically using slope instructions.