Kunststof Forte BV

Plastic Grids (GRP)

Would you like to order plastic grids (GRP)? Ask for a offer to! Do you have any questions about the products in our range, or do you have a wish for a certain processing? Please do not hesitate to contact us.

You can contact us by calling +31 (0) 622 340 847 or send an e-mail to info@kunststofforte.nl. It is also possible to leave your contact details in the contact form. Then we will contact you as soon as possible to give you more information about the products.

  • fast delivery time
  • safe payment
  • personal service


Glass fibre reinforced plastic (GRP) walkway gratings are manufactured by combining glass fibre and resin in a special mould. This produces a plastic grating with certain chemical and mechanical properties, depending on the type of resin selected. The ratio of glass fibre to resin is 35% and 65% respectively.

Advantages of plastic grids (GRP)

  • Corrosion-resistant;
  • Fire retardant;
  • Durable;
  • Anti-slip;
  • Lightweight;
  • Maintenance-free;
  • Not electrically conductive.


  • corrosion-free
  • weatherproof
  • resistant to acids, bases, chemicals, oils and greases
  • strong surface pressure and tractive force
  • resilient
  • low-maintenance
  • light in weight
  • electrically insulating
  • Easy to process and assemble
  • various thicknesses, sizes and colours

Resin types of plastic grids

Our plastic gratings are available in 4 types of resin as standard:

Type O: Orthophthalmic Polyester resin, general applications with resistance to atmospheric corrosion. Fire retardant according to the
EN-13501-1 (fire behaviour for construction products)
Type I: Isophthalic polyester resin, good chemical resistance and high fire resistance with low smoke emission.
Type V: Vinyl ester resin Extreme chemical resistance combined with high fire resistance and low smoke generation.

Overview of resin types

Abbreviation Heart type Basic resin Description Standard Colours Chemical Resistance
ORTHO Orthophthalic Polyesther Resin offers resistance to atmospheric corrosion. Grey (RAL7040) Good fire resistance
ISO Isophthalic Polyesther Resin is ideally suited to corrosive and chemical environments and offers high fire resistance with controlled smoke dispersion

Green (RAL6010)


Good fire resistance
VE Vinylester Offers excellent chemical resistance to acids, salts and other corrosive substances. Furthermore, this type of resin guarantees high fire resistance. Orange/Red (RAL2002) Excellent fire resistance
PH Phenol Resin gives optimum chemical resistance with excellent fire resistance and minimal smoke generation. This type of resin is often used in off-shore applications. Black (RAL9004) Best fire resistance with minimal smoke development



GRP gratings are available in the following thicknesses and mesh sizes:

Type Overvoltage Distributed load Point load
mm N/m² N
500 25650 7100
Maas 600 14840 4790
38 x 38mm 700 9350 3850
800 6260 2720
Thickness 900 4400 2480
25mm 1000 3210 1880
1100 2410 1660
1200 1860 1570


500 34760 8880
Maas 600 20120 5960
40 x 40mm 700 12670 5080
800 8490 4100
Thickness 900 5960 3370
30mm 1000 4350 2960
1100 3260 2500
1200 2510 2270


500 44240 11480
Maas 600 25600 7910
20 x 20mm 700 16120 5690
800 10800 4970
Thickness 900 7590 4230
30mm 1000 5530 3890
1100 4150 3090
1200 3200 2640


500 75180 20220
Maas 600 43510 15310
40 x 40mm 700 27400 11700
800 18360 9580
Thickness 900 12890 7660
38mm 1000 9400 7050
1100 7060 6300
1200 5680 5440


Top layer

GRP walkway gratings are available with different surface types.

Sanded surface In some circumstances, it may be desirable to have a grit top layer applied to your GRP gratings. This top layer is available in various grain sizes. The grit top layer is not necessarily more antiskid, but offers extra advantages. These include the aesthetic aspect and the comfortable feel of the foot.
Concave surface As standard, plastic gratings are non-slip due to their concave (meniscus) surface. This surface meets the standard R13 of BGR 181 and DIN 51130. You, as the end user, are assured of optimum and lasting safety.
Tight surface As an alternative to open grilles, we also offer closed (HLU) panels. HLU panels have a closed top surface. The surface is provided with a standard sanded top layer to ensure the anti-slip effect. The thickness of the grating increases by approx. 3 or 5mm. These panels are also available as sandwich panels with a closed surface on top and bottom.
Flat surface In a number of segments, including the food industry, the risk of bacterial infection is high. Cleanliness and hygiene are of great importance here. In such an environment, Fiberstruct offers plastic grids with a calibrated smooth surface.

Basic colours
The basic colours of Glass Reinforced Plastic Grilles are:

Grey (RAL 7035);
Green (RAL 6010);
Orange/Red (RAL 2002).

Purchase glass fibre reinforced plastic (GRP) walkway gratings from Kunststof Forte

  • Fast delivery time;
  • Pay safely;
  • Personalised service;
  • Wide online range;
  • We have a lot of knowledge, so you can also come to us for advice.

Would you like to buy Glass fibre reinforced plastic (GRP) walking grids? Then place an order directly via our website. We will make sure that these delivered as soon as possible will be. Do you have questions about the plates or the ordering process? Please contact our customer service via the contact page.


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