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CORE TRP Tree Root Protection - No Dig Construction

Third party certifications:
  • QA Certificate

    Certificate type

CORE Landscape Products

Cellular web system which protects tree roots from damage caused by excavation and traffic loads.

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+44 (0)1753 652 555 www.corelp.co.uk

Site access, access roads, residential driveways, overflow car parks and vehicle hard standings,.


A cellular web system that provides protection to mature tree roots from pedestrian and vehicular traffic. It helps distribute the weight of the traffic that, in turn, prevents subsoil compaction around the roots. It is available in depths of 50 mm, 75 mm, 100 mm, 150 mm and 200 mm.

When filled with granular materials, the system creates a three-dimensional erosion barrier and structural bridge that uniformly distributes weight-bearing loads. The cellular nature of the system confines free draining subbase materials, stabilizing the ground while the perforated cell wall enhances drainage, preventing build-up of hydrostatic pressure.

Unlike traditional road and driveway construction methods, no excavation is required; the panels form a high load bearing, shallow, permeable sub-base above ground.

Features and benefits:

  • Provides a cost-effective solution for long-term root protection.
  • Collapsible cells simplify transportation and on site handling.
  • Rapid and simple installation conforms to most terrain profiles.
  • Ultrasonic welding of cell joints ensures maximum strength.
  • Easily dismantled and subsequently re-used.
  • Withstands high weight bearing loads.
  • Highly resistant to biological attack and a wide range of soil borne chemicals.
  • APN 12 compliant.


Site access, access roads, residential driveways, overflow car parks and vehicle hard standings,.

General information



High load bearing, shallow permeable sub-base above ground


Grid with Fill - granular


Polyethylene composite with density of 0.95g/cm ±1.5%


50 x 252 x 229 mm

75 x 252 x 229 mm

100 x 252 x 229 mm

150 x 252 x 229 mm

200 x 252 x 229 mm

Uniclass 2015
Pr_25_93_60_61 Plastics cellular paversPrimary
Specification data - Plastics cellular pavers
Product Reference

CORE TRP - No Dig Construction

50 mm - Seam weld strength: 725 N; weight per panel: 12.3 kg.

CORE TRP - No Dig Construction 75 mm - Seam weld strength: 1065 N; weight per panel: 18 kg.

CORE TRP - No Dig Construction 100 mm - Seam weld strength: 1450 N; weight per panel: 24.5 kg.

CORE TRP - No Dig Construction 150 mm - Seam weld strength: 2150 N; weight per panel: 36 kg.

CORE TRP - No Dig Construction 200 mm - Seam weld strength: 2900 N; weight per panel: 48.5 kg.

Physical properties -

Polyethylene composite with density of 0.95 g/cm ±1.5%



Top surface finish

Fill - aggregate

Dimensions -
Plan size

7380 x 2710 mm (20 m²)

Thickness (minimum)

Perforated wall thickness: 1.5 mm

Polyethylene composite density

0.95 g/cm ±1.5%

Tensile strength (to EN ISO 527)

Longitudinal: 18.4 MPa; transversal: 19.5 Mpa

Long term seam hang strength

<30 days

Peel strength (for 100 mm) (to EN ISO 13426-1)

15 kN/m ±1

Environmental stress crack resistance

>3000 hours

Biological/ chemical resistance

Unaffected by moulds and algae and good resistance to oils, acids, alkalis and bitumen

Carbon black content (to ASTM D 1603)

1.5–2% by weight

Service temperature

-20 to + 120°C

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Third party certifications
  • CE certified
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