GRP Moulded Grating

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.

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.

Grating Applications

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
Gratings are exceptionally strong & lightweight at the same time, much lighter than traditional materials e. steel or 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

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

Square Open Mesh Generally with a grit top surface but can be concave or plain top if required

Square Open Mini Mesh Generally with a grit top surface but can be concave or plain top if required

Covered 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 available of grating mesh and top

Mid Grey Similar in colour to traditional steel grating and blends in well with construction industry surroundings

Mid Green One of the most popular colour choices for grating

Safety Yellow Offers high visibility to aid safety, commonly used for access walkways

Grating Code: GRPMG-1
Grating Type: Standard Square Open Mesh, 38 x 38mm hole centres
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 centres
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 centres
Depth: 50mm
Load bar thickness: 8mm
Open area: 71%
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 centres
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 centres
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 centres
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
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
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 centres
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 centres
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 centres
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

RESIN TYPE →→	Vinylester		Isophthalic (Standard resin system used for GRP Grating)		Orthophthalic
↓ Chemical ↓	Concentration %	Max.Operating Temp. F/C	Concentration %	Max.Operating Temp. F/C	Concentration %	Max.Operating Temp. F/C
Acetic Acid	50	180/82	50	125/52	25	N/R
Aluminum Hydroxide	100	180/82	100	160/71	ALL	–
Ammonium Chloride	ALL	210/99	ALL	170/77	ALL	–
Ammonium Bicarbonate	50	160/70	15	125/52	ALL	–
Ammonium Hydroxide	28	100/38	28	N/R	ALL	N/R
Ammonium Sulfate	ALL	210/99	ALL	170/77	ALL	–
Benzene	ALL	N/R	ALL	N/R	ALL	N/R
Benzoic Acid	SAT	210/99	SAT	150/66	ALL	77/25
Borax	SAT	210/99	SAT	170/77	ALL	–
Calcium Carbonate	ALL	180/82	ALL	170/77	ALL	–
Calcium Nitrate	ALL	210/99	ALL	180/82	ALL	–
Carbon Tetrachloride	100	150/65	100	N/R	100	N/R
Chlorine Dry Gas	–	210/99	–	140/60	–	N/R
Chlorine Water	SAT	200/93	SAT	80/27	SAT	N/R
Chromic Acid	10	150/65	5	70/21	5	N/R
Citric Acid	ALL	210/99	ALL	170/77	ALL	77/25
Copper Chloride	ALL	210/99	ALL	170/77	ALL	104/40
Copper Cyanide	ALL	210/99	ALL	170/77	ALL	77/25
Copper Nitrate	ALL	210/99	ALL	170/77	ALL	–
Ethanol	50	100/38	50	75/24	10	77/25
Ethylene Glycol	100	200/93	100	90/32	100	104/40
Ferrous Chloride	ALL	210/99	ALL	170/77	ALL	86/30
Formaldehyde	ALL	150/65	50	75/24	25	–
Glucose	100	210/99	100	170/77
Gasoline	100	180/82	100	80/27	100	77/25
Glycerin	100	210/99	100	150/66	100	–
Hydrobromic Acid	50	150/65	50	120/49	18	–
Hydrochloric Acid	37	150/65	37	75/24	10	86/30
Hydrogen Peroxide	30	150/65	5	100/38	5	N/R
Lactic Acid	ALL	210/99	ALL	170/77	ALL	77/25
Lithium Chloride	SAT	210/99	SAT	150/66	ALL	–
Magnesium Chloride	ALL	210/99	ALL	170/77	ALL	104/40
Magnesium Nitrate	ALL	210/99	ALL	140/60	ALL	86/30
Magnesium Sulfate	ALL	210/99	ALL	170/77	ALL	104/40
Mercuric Chloride	100	210/99	100	150/66	100	104/40
Nickel Sulfate	ALL	210/99	ALL	170/77	ALL	104/40
Nitric Acid	20	120/49	20	70/21	2	N/R
Oxalic Acid	ALL	210/99	ALL	75/24	ALL	N/R
Perchloric Acid	30	100/38	10	N/R	10	N/R
Phosphoric Acid	100	210/99	100	120/49	80	N/R
Potass.Chloride	ALL	210/99	ALL	170/77	ALL	104/40
Potassium Dichromate	ALL	210/99	ALL	170/77	ALL	77/25
Potassium Sulfate	ALL	210/99	ALL	170/77	ALL	104/40
Propylene Glycol	ALL	210/99	ALL	170/77	ALL	104/40
Sodium Acetate	ALL	210/99	ALL	160/71	ALL	104/40
Sodium Bisulfate	ALL	210/99	ALL	170/77	ALL	–
Sodium Bromide	ALL	210/99	ALL	170/77	5	–
Sodium Cyanide	ALL	210/99	ALL	170/77	5	N/R
Sodium Hydroxide	25	180/82	N/R	N/R	1	N/R
Sodium Nitrate	ALL	210/99	ALL	170/77	ALL	104/40
Sodium Sulfate	ALL	210/99	ALL	170/77	ALL	104/40
Stannic Chloride	ALL	210/99	ALL	160/71	ALL	104/40
Sulfuric Acid	75	100/38	25	75/24	10	–
Tartaric Acid	ALL	210/99	ALL	170/77	ALL	–
Vinegar	100	210/99	100	170/77	ALL	–
Water Distilled	100	180/82	100	170/77	ALL	86/30
Zinc Nitrate	ALL	210/99	ALL	170/77	ALL	104/40
Zinc Sulfate	ALL	210/99	ALL	170/77	ALL	104/40

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.

Grating Accessories – GRP Grating Clips Fixings

‘M’ Clip Fixing Set

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 secured

‘C’ Clip Fixing Set

For 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

‘L’ Clip Fixing Set

Hooks 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 secured

Grating Accessories – Adjustable Pedestal Feet

The polypropylene pedestals are exceptionally strong and able to deal with heavy industrial loads

Many 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%

Adjustable pedestals are used to elevate GRP Grating panels up from the base substrate

Grating Accessories – 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.

GRP Moulded Grating Case Studies

GRP Riser Decking at large project in Birmingham