Topseal GreenTop System

Topseal GreenTop System

Topseal Systems Ltd Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Fully waterproof roofing protection, with a sedum/ wildflower living top layer.

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Topseal GreenTop is environmentally friendly to install and provides the ultimate green roof system, guaranteed to perform as an active green roof, for a minimum of 25 years. It can be used to create a totally bespoke green roof or specified with Topseal’s recommended sedum green roof, or even an optional wildflower roof.

A Topseal GreenTop green roof can help increase local biodiversity, whilst adding positively to global environmental conditions. Apart from creating a naturally beautiful area, Topseal GreenTop adds extra thermal and sound insulation to a property, whilst delivering energy savings as it protects from internal temperature fluctuations in the summer and winter months.

The Topseal Greentop green roof will provide the ideal low-maintenance roof garden, with a high thermal resistance (typical U-value: 0.22).


- As Topseal DoubleTop System:

  • 18 mm OSB3 decking.
  • Topseal GRP roof, comprising: 2 x Topseal GRP laminate (450 g/m² reinforcement) and Topseal topcoat with choice of colours and finishes.

- Additional:

  • Drainage/ water retention layer.
  • GreenTop substrate.
  • GreenTop sedum/ wildflower.

General information

Uniclass 2015

Ss_45_40_47_28 Extensive green roof systemsPrimary


Q37/110 Intensive green roof

Q37/120 Simple intensive green roof

Q37/130 Extensive green roof

Specification data - Extensive green roof systems

Product Reference

Topseal GreenTop System


Dark Admiralty Grey




BS 4800, colour

RAL, colour

Consult manufacturer and insert requirements.


As drawing

Contractors choice

Product Options


A wide range of GRP edge trims and pebble borders can be installed; consult manufacturer with requirements.

Third party certifications