Specifying and Installing 38mm GRP Grating: A Practical Guide for Engineers and Contractors
This guide provides practical advice for specifying and installing 38mm GRP grating. Whether you are an engineer writing a specification or a contractor planning installation, the following best practices will help ensure a safe, durable outcome.
Selection checklist
- Confirm required resin type (polyester, vinyl ester, phenolic) based on chemical and fire exposure.
- Choose surface finish (grit, serrated) appropriate for slip resistance needs.
- Verify panel mesh/open area to match drainage and load requirements.
- Request load/span tables from your supplier for the selected panel configuration.
Fixing methods and hardware
Common fixing options:
- Stainless steel clips: widely used where corrosion is a concern.
- FRP clips and studs: maintain full non-conductive system when required.
- Edge capping: FRP angle or aluminum trim protects panel edges in high traffic zones.
Cutting and on-site modifications
Use diamond blades or abrasive cutters to produce clean edges. Take care to support panels during cutting to avoid chipping. Deburr edges and fit edge trims where panels terminate.
Thermal movement and tolerances
Allow for thermal expansion across long runs: provide expansion joints or clips that permit slight movement. Typical design practice includes clip spacing and 2–3 mm clearance on long panel edges.
Safety during installation
- Wear dust masks and eye protection when cutting panels.
- Use mechanical lifting or two-person handling for large panels despite their light weight.
- Check that fixings are corrosion resistant and torqued to supplier recommendations.
Quality control and handover
- Inspect panels for surface damage prior to installation.
- Verify all fixings and edge trims are secure.
- Provide the client with maintenance guidance and the supplier's load/span tables.
For downloadable technical resources and CAD details, visit the product technical page: 38mm GRP Grating.
