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Tree Root Barrier Installation Guide

Posted by Global Plastic Sheeting on Wed, Dec 20, 2023 @ 03:53

Installation Guide for Root Barrier with HDPE Plastic:

Materials Needed:

  • HDPE Plastic Root Barrier
  • Digging Tools (Shovel, Trowel)
  • Measuring Tape
  • Landscape Fabric
  • Backfill Material (Gravel or Soil)
  • Heavy-Duty Staples or Anchors
  • Utility Knife
  • Gloves

Step 1: Assess and Plan

  1. Identify the type of tree and its root pattern. Different trees may require specific barrier configurations.
  2. Measure the distance from the tree trunk to the area where you want to restrict root growth.

Step 2: Choose Barrier Type

  1. For Bamboo:

    • Install a vertical barrier at least 18 inches deep around the bamboo cluster.
    • Extend the barrier 2-3 feet above the ground to prevent rhizomes from spreading.
  2. For Other Trees:

    • Install a vertical barrier at least 24 inches deep around the tree.
    • Extend the barrier in a circular pattern based on the tree's projected root spread.

Step 3: Dig Trench

  1. Use a shovel to dig a trench around the marked perimeter.
  2. For bamboo, create a barrier that goes deeper than the rhizomes.

Step 4: Install Landscape Fabric

  1. Line the trench with landscape fabric to prevent soil intrusion into the barrier.
  2. Ensure the fabric extends below and above the HDPE barrier.

Step 5: Place HDPE Plastic Barrier

  1. Unroll the HDPE plastic barrier along the trench.
  2. Position it vertically with the smooth side facing the tree or bamboo.

Step 6: Secure the Barrier

  1. Use heavy-duty staples or anchors to secure the HDPE barrier to the ground.
  2. Ensure the barrier stands upright without gaps.

Step 7: Overlap Sections

  1. If using multiple sections of HDPE barrier, overlap them by at least 12 inches.
  2. Secure the overlapping sections with additional staples or anchors.

Step 8: Cut Excess Barrier

  1. Trim the excess HDPE barrier with a utility knife.
  2. Leave the barrier at least 2 inches above the ground to account for settling.

Step 9: Backfill

  1. Fill the trench with backfill material (gravel or soil).
  2. Tamp the backfill to eliminate air pockets and provide stability.

Step 10: Monitor and Maintain

  1. Regularly monitor the barrier's effectiveness by checking for root encroachment.
  2. Adjust and reinforce the barrier if needed.


  • Install the root barrier during the tree's dormant season.
  • Consider professional advice for specific tree species.
  • Ensure proper disposal of excess HDPE material according to local regulations.

By following these step-by-step instructions tailored to different trees, you can effectively install an HDPE root barrier to manage invasive root growth. Consult with an arborist to assure your particular success for your tree and yard.

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Tags: #DIYrootbarrier, HDPErootbarrier