GRP Moulded Grating Description

grp-grating-application14
GRP Grating is a structural fibreglass grating product that is made by hand using GRP rovings and resin to offer once cured and exceptional grating panel that has the benefit of bi-directional strength. As the grating is made in a continuous run without the fibres ever been broken, small and medium cut outs of the grating does not effect the panel.
The grating lends itself to many different applications from service riser grating for open riser shaft voids, overhead walkways and gantries to heavy industrial trench covers. With its many benefits over traditional materials, GRP Moulded Grating should be the ultimate choice for the 21st Century.
Generally all stock panels of GRP Grating have an anti slip top surface which offers excellent slip resistance for applications for pedestrian use. The anti slip aggregate used for our GRP Grating is harder wearing than any other grating on the market (don’t take our word for it, order your sample to test).
With choices in panel thicknesses for increased spans and loadings and several different panel sizes to ensure virtually any application can be dealt with. Three different stock colours are available but any colour is available with no minimum order quantity just an extended lead time.

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Key Benefits

  • Non Slip Top Surface

    A hard wearing anti slip grit is added to the top of the grating for excellent slip resistance in wet and oily conditions

  • Tough fibreglass construction

    Moulded grating is made using strong fibres that are never broken during the manufacturing process to give a bi-directional structurally strong grating

  • Fire Retardant

    All Grating has been tested to BS476: Part 7 that covers Fire tests on building materials and structures, the grating met Class 1 flame spread rating

  • Meets British Standards BS 4592-6:2008

    Our Grating meets the standard for Industrial GRP (fibreglass) flooring and open mesh stair treads

  • Chemical Resistant

    All gratings are made using ISO resin as standard which offers excellent chemical resistance for many different chemical substances

  • Lightweight

    All gratings are exceptionally strong but are lightweight at the same time and much lighter than traditional materials like steel and timber, standard 25mm thick mesh weighing only 12.5kgs per square metre

  • Non Sparking

    A big benefit of the GRP grating is it can be cut without the need for any hot works permits and will not spark if metal tools are dropped, eliminating any fire risks

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Moulded Grating Types

Types of Grating we offer

Choosing the right grating for your application is an important decision and with the support our sales team we will try and make it the right decision. We hold large stocks of the most popular gratings we supply and can generally supply straight away. We offer over 25 different grating types, which are all available but may be subject to an extended lead time.

To help in deciding the right grating for you, free samples are available on request.

Most popular types of grating mesh and top
grp-grating-open-mesh2grp-grating-mini-meshgrp-grating-covered-top
Square Open Mesh Generally with a grit top surface but can be concave or plain top if requiredSquare Open Mini Mesh Generally with a grit top surface but can be concave or plain top if requiredCovered Top Grating has a 4mm GRP sheet bonded to the top surface during the manufacturing process, generally with a grit top finish but can be supplied with a chequer plate design if required
Colours
grp-grating-greengrp-grating-greygrp-grating-yellow

Mid Green One of the most popular colour choices for grating

Mid Grey Similar in colour to traditional steel grating and blends in well with construction industry surroundingsSafety Yellow Offers high visibility to aid safety, commonly used for access walkways

Full Grating Types

Grating Code: GRPMG-1
Grating Type: Standard Square Open Mesh, 38 x 38mm hole centresgrp-grating-3838-25mmgrp-grating-outline3
Depth: 25mm
Load bar thickness: 7mm
Open area: 68%
Weight: Concave Top – 12.5kg per square metre, Grit Top 13.5kgs per square metre
Panel sizes available: 4000 x 1220mm, 3660 x 1220mm, 3010 x 996mm, 1985 x 996mm, 2440 x 1220mm, 3050 x 915mm

Grating Code: GRPMG-2
Grating Type: Standard Square Open Mesh, 38 x 38mm hole centresgrp-grating-3838-38mmgrp-grating-outline-3838-38mm
Depth: 38mm
Load bar thickness: 7mm
Open area: 68%
Weight: Concave Top – 19.5kg per square metre, Grit Top 20.5kgs per square metre
Panel sizes available: 4000 x 1524mm, 3050mm x 1524mm, 4000 x 1220mm, 3660 x 1220mm, 3010 x 996mm, 1985 x 996mm, 2440 x 1220mm, 3050 x 915mm

Grating Code: GRPMG-3
Grating Type: Standard Square Open Mesh, 50 x 50mm hole centresgrp-grating-5050-50mmgrp-grating-outline-5050-50mm
Depth: 50mm
Load bar thickness: 7mm
Open area: 78%
Weight: Concave Top – 23.5kg per square metre, Grit Top 24.5kgs per square metre
Panel sizes available: 4000 x 1220mm, 3660 x 1220mm, 2440 x 1220mm, 3050 x 915mm

Grating Code: GRPMG-4
Grating Type: Standard Square Open Mesh, 38 x 38mm hole centresgrp-grating-383813mmgrp-grating-outline-3838-13mm
Depth: 13mm
Load bar thickness: 7mm
Open area: 68%
Weight: Concave Top – 7kg per square metre, Grit Top 8kgs per square metre
Panel sizes available: 3660mm x 1220mm, 2440mm x 1220mm, 3050mm x 915mm

Grating Code: GRPMG-5
Grating Type: Standard Square Open Mesh, 50 x 50mm hole centresgrp-grating-505013mmgrp-grating-outline-5050-13mm
Depth: 13mm
Load bar thickness: 7mm
Open area: 78%
Weight: Concave Top – 7kg per square metre, Grit Top 7kgs per square metre
Panel sizes available: 3660mm x 1220mm, 2440mm x 1220mm, 3050mm x 915mm

Grating Code: GRPMG-6
Grating Type: Standard Square Open Mesh, 40 x 40mm hole centresgrp-grating-404025mmgrp-grating-outline-4040-25mm
Depth: 25mm
Load bar thickness: 7mm
Open area: 67%
Weight: Concave Top – 12kg per square metre, Grit Top 13kgs per square metre
Panel sizes available: 3007mm x 1007mm

Grating Code: GRPMG-7
Grating Type: Standard Square Open Mesh, 40 x 40mm hole centres grp-grating-404040mm 
Depth: 40mm
Load bar thickness: 7mm
Open area: 67%
Weight: Concave Top – 20kg per square metre, Grit Top 21kgs per square metre
Panel sizes available: 3007mm x 1007mm

Grating Code: GRPMG-8
Grating Type: Standard Mini Mesh Square Open Mesh, 20 x 20mm hole centres grp-grating-204014mm grp-grating-outline-2040-14mm
Depth: 14mm
Load bar thickness: 7mm
Open area: 42%
Weight: Concave Top – 11kg per square metre, Grit Top 12kgs per square metre
Panel sizes available: 4047mm x 1247mm, 4007mm x 1007mm

Grating Code: GRPMG-9
Grating Type: Standard Mini Mesh Square Open Mesh, 19 x 19mm hole centresgrp-grating-381925mmgrp-grating-outline-1938-25mm
Depth: 25mm
Load bar thickness: 7mm
Open area: 40%
Weight: Concave Top – 17kg per square metre, Grit Top 18kgs per square metre
Panel sizes available: 4000mm x 1220mm, 3660mm x 1220mm, 2440mm x 1220mm, 3050mm x 915mm

Grating Code: GRPMG-10
Grating Type: Standard Mini Mesh Square Open Mesh, 20 x 20mm hole centresgrp-grating-304020mmgrp-grating-outline-2040-30mm
Depth: 30mm
Load bar thickness: 7mm
Open area: 42%
Weight: Concave Top – 18kg per square metre, Grit Top 19kgs per square metre
Panel sizes available: 4007mm x 1007mm, 3007mm x 1007mm

Grating Code: GRPMG-11
Grating Type: Standard Mini Mesh Square Open Mesh, 19 x 19mm hole centresgrp-grating-383819mmgrp-grating-outline-1938-38mm
Depth: 38mm
Load bar thickness: 7mm
Open area: 40%
Weight: Concave Top – 24kg per square metre, Grit Top 25kgs per square metre
Panel sizes available: 4000mm x 1220mm, 3660mm x 1220mm, 2440mm x 1220mm, 3050mm x 915mm

Grating Code: GRPMG-12
Grating Type: Standard Mini Mesh Square Open Mesh, 19 x 19mm hole centres grp-grating-404020mmgrp-grating-outline-2040-40mm
Depth: 40mm
Load bar thickness: 7mm
Open area: 42%
Weight: Concave Top – 24.5kg per square metre, Grit Top 25.5kgs per square metre
Panel sizes available: 4007mm x 1007mm, 3007mm x 1007mm

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Chemical Resistance

RESIN TYPE →→VinylesterIsophthalic (Standard resin system used for GRP Grating)Orthophthalic
↓ Chemical ↓Concentration %Max.Operating Temp. F/CConcentration %Max.Operating Temp. F/CConcentration %Max.Operating Temp. F/C
Acetic Acid50180/8250125/5225N/R
Aluminum Hydroxide100180/82100160/71ALL
Ammonium ChlorideALL210/99ALL170/77ALL
Ammonium Bicarbonate50160/7015125/52ALL
Ammonium Hydroxide28100/3828N/RALLN/R
Ammonium SulfateALL210/99ALL170/77ALL
BenzeneALLN/RALLN/RALLN/R
Benzoic AcidSAT210/99SAT150/66ALL77/25
BoraxSAT210/99SAT170/77ALL
Calcium CarbonateALL180/82ALL170/77ALL
Calcium NitrateALL210/99ALL180/82ALL
Carbon Tetrachloride100150/65100N/R100N/R
Chlorine Dry Gas210/99140/60N/R
Chlorine WaterSAT200/93SAT80/27SATN/R
Chromic Acid10150/65570/215N/R
Citric AcidALL210/99ALL170/77ALL77/25
Copper ChlorideALL210/99ALL170/77ALL104/40
Copper CyanideALL210/99ALL170/77ALL77/25
Copper NitrateALL210/99ALL170/77ALL
Ethanol50100/385075/241077/25
Ethylene Glycol100200/9310090/32100104/40
Ferrous ChlorideALL210/99ALL170/77ALL86/30
FormaldehydeALL150/655075/2425
Glucose100210/99100170/77
Gasoline100180/8210080/2710077/25
Glycerin100210/99100150/66100
Hydrobromic Acid50150/6550120/4918
Hydrochloric Acid37150/653775/241086/30
Hydrogen Peroxide30150/655100/385N/R
Lactic AcidALL210/99ALL170/77ALL77/25
Lithium ChlorideSAT210/99SAT150/66ALL
Magnesium ChlorideALL210/99ALL170/77ALL104/40
Magnesium NitrateALL210/99ALL140/60ALL86/30
Magnesium SulfateALL210/99ALL170/77ALL104/40
Mercuric Chloride100210/99100150/66100104/40
Nickel SulfateALL210/99ALL170/77ALL104/40
Nitric Acid20120/492070/212N/R
Oxalic AcidALL210/99ALL75/24ALLN/R
Perchloric Acid30100/3810N/R10N/R
Phosphoric Acid100210/99100120/4980N/R
Potass.ChlorideALL210/99ALL170/77ALL104/40
Potassium DichromateALL210/99ALL170/77ALL77/25
Potassium SulfateALL210/99ALL170/77ALL104/40
Propylene GlycolALL210/99ALL170/77ALL104/40
Sodium AcetateALL210/99ALL160/71ALL104/40
Sodium BisulfateALL210/99ALL170/77ALL
Sodium BromideALL210/99ALL170/775
Sodium CyanideALL210/99ALL170/775N/R
Sodium Hydroxide25180/82N/RN/R1N/R
Sodium NitrateALL210/99ALL170/77ALL104/40
Sodium SulfateALL210/99ALL170/77ALL104/40
Stannic ChlorideALL210/99ALL160/71ALL104/40
Sulfuric Acid75100/382575/2410
Tartaric AcidALL210/99ALL170/77ALL
Vinegar100210/99100170/77ALL
Water Distilled100180/82100170/77ALL86/30
Zinc NitrateALL210/99ALL170/77ALL104/40
Zinc SulfateALL210/99ALL170/77ALL104/40

Data is for information purposes only and we would always recommend testing a small sample (available on request from us) to ensure the grating can withstand your environment. We cannot accept any responsibility or liability if test piece is not used.

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Grating Accessories

GRP Grating Clips Fixings
Hooks over two load bars for maximum security. Provided bolt (with clip set) goes through centre of clip and through drilled support then the washer and nut is securedHooks over one load bar, generally in the corner of the grating. Provided bolt (with clip set) goes through centre of clip and through drilled support then the washer and nut is securedFor joining two grating panels/pieces together. Slots over two joining load bars. Underside of clip has a welded nut and the provided bolt screws through the two holes in the C clip and tightens into the welded nut
Adjustable Pedestal Feet
Adjustable pedestals are used to elevate GRP Grating panels up from the base substrateThe polypropylene pedestals are exceptionally strong and able to deal with heavy industrial loadsMany different heights can be dealt with from 17mm to 850mm and each pedestal (from 74mm upwards) comes with an adjustable slope corrector to give angles of 0-5%
Grating Ramp
GRP Grating Ramps joins to standard grating panels to offer a chamfered leading edge to floor sitting panels. Available in 25mm or 38mm thick, 120mm deep and up to 3660mm long panels, they have a chamfered covered top leading edge with one row of open square holes at the back. This means that the ramp can easily be joined to existing grating panels by use of a ‘C’ joining clip or butted up the grating panel and fixed down in place.

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