GRP is a mixture of glass strands and a resin, which bonds the strands together. In most cases the resin is a polyester based product although in more recent times epoxy resins have been used. To obtain a smooth surface finish a thin layer of gel coat is added with a pigment- this gives GRP its colour and prevents water penetrating the material. Because the gel coat layer is quite thin, hairline cracks can appear in high stress areas. Loss of colour and chalking due to the affect of ultra-violet rays also affects GRP components.
Glass reinforced plastics are used in many applications at Navaid sites:
- Shelters for equipment (GRP Huts, Battery boxes, etc)
- Structural components (GRP Towers, Gridmesh decking, etc)
- Visual signals (Daymarks, top marks)
The key aspects that make GRP materials attractive for use in marine navaids are:
- Low maintenance; and
- Light weight.
AMS has experience in the inspection and maintenance of GRP structures and can perform on-site repairs where necessary.
For further information and pricing, please contact us directly at