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Green Roof Edge Trim - 1 metre length

£18.00 Ex VAT
£21.60 Inc VAT

One metre metal edging trim with 6mm holes for roofs, green roofs and landscaping applications. An affordable water-permeable separating strip designed to be installed between bulk materials.  

Aluminium Edging Trim with drilled holes

High quality water-permeable aluminium edging trim, ideal for use as green roof edge trim and in landscaping. The trims are designed to go around the perimeter of a roof to help contain mass materials such as the growing substrate of a living roof.

The one metre lengths are ultra-convenient and easy to handle. They feature drilled holes to allow water to drain easily.   

Uses of Aluminium Edge Trim

These edge trims can be used in the following situations:      

  • a separator between the substrate/pebble strip and the open edge of the roof   
  • water-permeable upstand at the eaves edge of roofs up to max. 5° roof pitch (e.g. car ports, bike sheds) and flat roofs 
  • garden landscaping

Note: These edge trims are not suitable for use as a structurally effective gravel retainer in the pitched roof area < 5° RP.

Green roof edge trim

These aluminium edging trims are ideal for green roofs. At a one metre length they are easy to install and ideally suited to smaller perimeters, acting as a green roof edge restraint. The strips enclose the vegetation as well as a border of pebbles that help prevent any roots or other material blocking the drainage holes.

Green roof edge detail 

green roof Edge trim

Installing aluminium edge trim

The edge trims are designed to go round the perimeter of a flat roof if there isn’t already an upstand. The one metre lengths can be joined together with an edge trim connector that effortlessly connects the strips together.

Corners are created by cutting the aluminium 1m lengths with tin snips or an appropriate tool and bending to the desired angle. This allows different angles to be formed that suit the specific layout. Please see images.

The perimeter border pebbles will sit on the base of the edge trim and the PermaSEAL Root Barrier & Separation Membrane can be cut to form a barrier between the pebbles and the growing medium. This prevents the growing medium/vegetation clogging up the pebbles and edge trim. 

Permagard - Providing Solutions. Inspiring Confidence.

Permagard are proud of our Green roof systems and the comprehensive range of accessories including these green roof edge restraints. Start your green roof project today with our expert guidance. For more information read our introduction to green roofs and Green Roof Construction Guide 


  • Convenient one metre lengths
  • Easy to join lengths together
  • Folded four times  
  • Permeable to water with 6mm diameter holes
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