Inland and Coastal Marina Systems’ GRC (glassfibre reinforced concrete) decking


Using many individual glass fibres in place of the traditional steel for reinforcement, Inland and Coastal’s glass fibre reinforced concrete (GRC) decking combines the strength of concrete with the slenderness of timber.

GRC Decking offers:

  • Excellent anti slip properties
  • A more stable pontoon, due to its heavier nature
  • Excellent aesthetic properties with options available on plain, stipple or timber effect finish
  • Durablility
  • UV and weather resistance


Inland and Coastal has developed its GRC decking to offer a durable, anti-slip alternative to wooden decking.

The glass fibres are non-reactive with the atmosphere which means the reinforcement can be much closer to the surface within the concrete, allowing for more slender sections than traditional reinforced concrete. Consequently, an Inland and Coastal concrete decking plank is only marginally deeper than timber or composite decks.

Understanding the aesthetic appeal of timber, Inland and Coastal has developed its Timber Effect GRC decking. With a textured grain finish to imitate timber and a choice of colours to match personal preferences, Timber Effect GRC is the sustainable future for the modern marinas.

Manufacturing its GRC decking in house, Inland and Coastal is able to keeps costs low and with a design life of over 30 years, its GRC decking has the lowest lifetime cost of any marina decking on the market.

Performance Data

GRC will never rot, it has enviable initial slip resistance which improves over time rather than degrading, and with a 4kN/m2 plus live load capacity, its more than capable of handling heavy regular usage.

Being a much denser material than timber or composite alternatives, concrete’s increased weight provides for a much more stable pontoon in choppy conditions, giving users far greater confidence underfoot.

Used by

Appealing to both leisure marinas and commercial ports, the Inland and Coastal’s GRC decking has most recently been used on the new Heavy Duty Pontoon system at Hartlepool Harbour’s Fish Quay and on the 33 berth extension at the popular Newark Marina.

Find out more

Inland and Coastal’s GRC decking has been in use for over 25 years and the company’s very happy to give a guided tour of one of the installalations. Contact Jon Challis (UK), Vincent Carey (Eire) or Calum MacDougall (Scotland) on