GRP Grating Systems

About GRP Gratings

Evergrip stock a comprehensive range of high quality GRP moulded gratings with a choice of panel sizes, surface and resin types to suit most applications.

The fibreglass gratings range is designed to offer a cost effective, low maintenance alternative to stainless or galvanized steel when used in new build or refurbishment projects.

High strength, durable and lightweight industrial fibreglass grating products; providing maintenance free reliability in all environments.

Glass reinforced polymer (GRP) gratings offer an attractive combination of mechanical & physical properties and are a proven, ideal replacement for steel grating, stainless steel grating  & aluminium composite grating. They are available in a wide variety of structural, chemical & dimensional variants making them suitable for installations in all industrial & commercial environments.

All types exhibit key product features & benefits:

• Strong & durable – excellent loading ability
• Non corroding – no issues with rust, maintenance free, low life-cycle costs
• Impact resistant – will not crack or chip, maintains the appearance
• Fire retardant – choice of resin type to meet the required performance for fire resistance.
• Chemical resistant – choice of options to suit all environments
• Low electrical & thermal conductivity – ideal near electrical installations
• Anti-slip surfaces – reduction in slip related accidents
• Relative light weight – reduced transport costs & load on existing structures
• Easy handling, fabrication & assembly – no welding

GRP fibreglass gratings are produced by two distinct manufacturing processes to offer either Moulded or Pultruded variants. Both types are composite products and combine fibreglass strands with thermosetting resins to form extremely strong panel structures. These two complimentary materials give glass reinforced plastic gratings excellent compressive and tensile strength.

Typical installation scenarios include:

• Access platform walkways
• Pedestrian bridges, steps & walkway panels
• Worker access to machinery
• Marina gangways
• Replacements for steel chequer plate or grid steps
• Replacements for wooden steps
• Marine vessel applications
• Water treatment works
• Offshore wind & oil facilities

MOULDED GRP gratings combine fibreglass rovings with a choice of thermosetting resins to form an extremely strong one piece panel.

Fibreglass gratings are proven to withstand the effects of chemical corrosion and are impact resistant and flame retardant.  A comprehensive range of mesh size (including mini mesh grp grating or micro mesh grp grating), mesh type & surface finishes is available.

Moulded fibreglass grating is available in the following types:

Open mesh – concave surface

Open gird flooring is a long lasting, durable solution to ensuring your floors are slip resistant. This concave surface grating has excellent compressive and tensile strength, making it perfect for industrial and commercial environments.

Open mesh – gritted surface

The gritted surface non-slip grating is suitable for both interior and exterior installations.  A combination of high impact resistance and rapid, on-site installation makes it a durable, cost effective replacement for metal gratings panels.

Covered (solid) top – gritted surface

Solid top gritted GRP grating panels have an additional 3mm thick GRP covering board laminated on top of the surface. This board forms an even stronger surface and makes this grating the ideal GRP walkway solution.

Micromesh

The benefit of micromesh grating flooring is that the reduced openings prevent small objects from passing through the mesh. In addition, the closer spacing of the mesh bars also allows for the smooth movement of trolleys and wheelchairs.

Conductive top

Conductive top grating is specially formulated with a carbon black surface. This surface, when electrically grounded, will eliminate any build-up of hazardous static electrical charges.

Chemical – resin type options:

• Polyester – orthophthalic, isophthalic & isophthalic (food grade)
• Vinylester – standard or high flame resistant
• Phenolic – high flame resistance & low smoke

Dimensional – Options

• Heights from 15mm to 60mm
• Panel sizes typically from 1007 mm width up to 4047 mm length

PULTRUDED gratings are assembled from GRP bearer bars (either I or T section) and transversely linked with cross-rod sections to specified spacings, giving an open surface range from 33%-60%.

The bearer bars are formed from densely packed continuous fibreglass rovings, combined with a multi-directional glass mat reinforcement and wrapped in a surface veil of resin.  During the pultrusion process, the fibres are drawn through a bath of resin and into a die under high temperature & pressure. This forms the cured, finished section which is cut to the required lengths.

The core of continuous glass rovings provides the bar with high longitudinal strength and stiffness, while the glass mat reinforcement gives transverse strength and resists chips, cracks and fractures. The surface veil finish offers protection against corrosion & UV light degradation.

Pultruded grating systems are proven to withstand the effects of chemical corrosion and are impact resistant and flame retardant.

Pultruded Grating is available in the following types:

Open structure

The pultruded open grating is a lightweight grating that is ideal for both interior and exterior installations. We offer a choice of spacing between the bearer bars and each GRP flooring panel can be manufactured, or cut, to size.

Open structure gritted surface

The gritted pultruded grating has a high load-bearing capacity and is ideally suited to installation with greater unsupported spans and even light vehicular traffic with the added advantage of a non-slip surface.

Covered (solid top) and gritted

Covered or solid top pultruded grating has an additional 3mm thick GRP covering board laminated on top of the surface to form a strong load-bearing GRP walkway product. Refined aluminium oxide granules offer a durable non-slip surface.

Chemical – Resin type options:

• Polyester – orthophthalic or isophthalic
• Vinylester – standard or high flame resistant

Dimensional – Options

A choice of panel dimensions is available to order with heights from 25mm to 50mm and maximum finished size of 6100mm x 1220 mm.