R4-QZ3A

Frequently asked questions about this timetable

• What are antistatic (AT) GRP gratings?

  Antistatic GRP gratings are glass fibre reinforced plastic gratings that have been specially developed to dissipate static electricity.
  Friction (e.g. from foot traffic) can cause a static charge to build up on standard GRP gratings.

  GRP is an insulating material and does not generate electrical voltage. The charge is usually generated by friction between the person or objects and the surface. Because standard GRP does not conduct electricity, the charge cannot be dissipated and a small discharge may occur upon contact.

  In antistatic GRP gratings, conductive components are added to the resin during production. This allows the built-up voltage to be safely discharged to earth via the grating, preventing discharges to persons or equipment.

  Antistatic GRP gratings are widely used in:

  • ATEX zones and potentially explosive environments,
  • chemical installations and tank farms,
  • rooms with sensitive electronics or measuring systems.

  Advantages:

  • Prevents electrostatic discharges (ESD),
  • Safe in potentially explosive or sensitive environments,
  • Lightweight, strong and low-maintenance, like standard GRP grating
• Can GRP gratings conduct electricity?

  No, standard GRP gratings are non-conductive.
  It is naturally an electrically insulating material. This means that it does not conduct electricity and therefore does not allow electrical charges to pass through or dissipate.

  This makes standard GRP gratings particularly suitable for applications where electrical insulation is required. For example, in electrical installations, transformers or in wet environments where metal gratings can pose a risk.
  When friction occurs (e.g. from foot traffic), static electricity can build up on people or objects. In standard GRP gratings, this charge is not discharged because the material is insulating.

  For situations where conduction or dissipation of static charge is desirable, antistatic GRP gratings are available. These contain conductive components in the resin, allowing built-up voltage to be safely dissipated to earth.

• What grid height should I use?

  The correct grating height depends on the load, the free span and the application of the GRP grating. At FlexxCon, we work with various standard heights, each suitable for a specific use:

  Height	Typical application	Characteristics
  13 mm (R1)	Screening or protective grating	Intended for shielding machines or conveyor belts, etc., not suitable as a walkway grating.
  25 mm (R2)	Light loads, walkways, inspection floors	Lightweight, easy to process, suitable for small spans.
  30 mm (R3)	General use, work floors, platforms	Good balance between rigidity and weight.
  38 mm (R4)	Heavier loads, technical floors, industrial platforms	Most commonly used version; suitable for heavier foot traffic and medium to larger spans.
  50 mm (R5)	Heavy industrial applications	Very rigid version; suitable for large spans or high loads.

  How do you choose the right height?

  The choice of the right grating height depends on:

  • the free span (the greatest distance between two supports),
  • the load occurring (e.g. standard live load: 2.5 kN/m² or a prescribed value),
  • the permissible deflection (comfort and safety),
  • and the available installation height.

  We are happy to advise you on determining the right height for your situation.
  👉 Contact us for a calculation or technical advice.

• What types of resin do you supply?

  At FlexxCon, we supply our GRP gratings with an isophthalic polyester fire retardant resin (ISOFR) as standard. This resin offers an excellent balance between mechanical strength, chemical resistance and fire retardant properties. Ideal for industrial applications.

  We also supply vinyl ester (VE) and phenolic (PH) gratings as options, depending on the requirements of your project.

  Resin type	Designation	Key properties	Typical applications
  Isophthalic polyester (fire retardant)	ISOFR	Our standard resin with high chemical resistance, high strength and fire-retardant properties.	Industrial environments, work floors, landings and platforms. Suitable for most general applications.
  Vinyl ester	VE	Very high chemical resistance, resistant to acids, alkalis and solvents. Also higher temperature resistance than ISOFR.	Chemical industry, water treatment, maritime sector and environments with aggressive media.
  Phenolic	PH	Excellent fire resistance and low smoke emission. Resistant to high temperatures and complies with strict fire standards.	Offshore, shipping, oil and gas industry, tunnels and transport applications.
  Orthophthalic polyester	OP	Basic type polyester resin with limited chemical and fire performance.	Not suitable for heavy industrial or fire-sensitive applications. Not available as standard from FlexxCon.

  Why do we choose ISOFR as standard?

  Many suppliers use orthophthalic polyester as their standard resin, but this often does not meet the requirements of industrial applications.
  At FlexxCon, we therefore supply ISOFR gratings as standard, so you can be sure of a high-quality, high-performance grating.

  For projects with specific requirements, such as high chemical exposure, ATEX environments or strict fire standards, we recommend choosing vinyl ester or phenolic resin. We would be happy to advise you personally on this!

  👉 Not sure which resin is best suited to your application? We are happy to help you choose the right material based on the environment, load and safety standards.