Every contractor knows that riser voids – the aperture left to accommodate M&E services on multiple floors of a building – are a major health and safety issue on any construction site.

To influence the way the construction industry approaches the design, build and use of risers, our company has designed Risegrate.

Easy installation of Risergrate

Installation Options

  • 1 Void perimeter supports utilising GRP angle
  • 2 Void cross members utilising GRP I beam
  • 3 Easily cast into concrete slab
  • 4 Supported on a cast in rebate

Why GRP grating is the right choice for you

The product is described as Glass reinforced plastic, a 100% protective product that does away with previous systems, such as steel grating, scaffolding or temporary plywood covers, which can be breached, or fail.

When M&E services are ready to be installed, the grating is easily cut using a jig saw to form the holes required for the riser services.

The use of Fibreglass Grating eliminates maintenance costs, since painting is not required. GRP Grating materials weigh about one quarter of steel grating, and two men can easily handle and fit the panels without the need for any equipment other than hand tools.

The proven gritted anti-slip surface of our moulded grating has one of the highest degrees of slip resistance ever measured for a walking surface, especially in wet, oily or frosty work areas. The integral gritted anti-slip top surface provides long-lasting slip resistant qualities. The material has excellent corrosion resistance, a factor which makes it a logical and cost-effective alternative to conventional steel materials.

The one piece interwoven mesh construction of moulded fibreglass grating produces a product with optimal corrosion resistance and bi-directional strength. Since the fibreglass grating is "cast" in one piece, there is no mechanical joint between bearing bars. The high percentage of resin (65%) in moulded fibreglass grating offers superior corrosion resistance and optimal impact resistance. Moulded fibreglass gratings offer increased load capacity and panel utilization due to its bi-directional trait.

Numerous cut-outs for piping, valve access, and column penetrations can be made without the need for additional structural framing. Being of one-piece construction, the fibreglass grating performs as a plate, distributing loads throughout the fibreglass grating section and around cut-outs. Cutting access holes in the moulded fibreglass grating does not weaken the panel and does not generally require additional or costly supports

Advantages of using GRP Grating for riser voids & service risers

  • Non slip quartz gritted surface
  • Superior corrosion resistance
  • Impact resistance
  • Non sparking
  • Maintenance free
  • UV resistant
  • Lightweight
  • Low installation costs
  • Low design limitations
  • Life cycle cost savings
  • Non conductive
  • Exceptional mechanical strength
  • Easily fabricated

GRP Grating Systems offers a complete service

  • Free site visits
  • Design
  • Fabrication
  • Installation
  • Project Management


Recognised accreditations for GRP Gratings
Risergrate during install on GRP I beam


Our Other Services

GRP Grating Systems

Fibreglass reinforced gratings are available in a number of mesh and panel sizes. We carry stock of all sizes, colours and resin types.

Each type of grating has specific properties and applications. Our sales staff would be happy to advise you on any application.

More GRP Grating products

For more details,
phone us on
0161 207 0012
or email