Technical resources for GRP
This section brings together material knowledge, product documentation, performance data and environmental declarations for our GRP products. The material is intended to support design, procurement and installation — structural sizing must always be verified for the individual project.
Choose a topic
What is GRP?
Material, manufacturing, properties, limitations and how GRP compares with steel, aluminium and timber.
OpenLoad and performance data
Load capacity, spans, deflection, slip resistance and fire classification — and what we need in order to issue data.
OpenGRP fire classification
The difference between reaction to fire under EN 13501-1 and fire resistance under EN 13501-2 — and what R30 means.
OpenInternational reference projects
Eight projects where Dura Composites' GRP solutions are used in rail, energy, marine and infrastructure.
OpenEPD and environmental documentation
Third-party verified environmental product declarations to EN 15804, available to download.
OpenHow to use this material
- Start with the material knowledge if GRP is new to the project team.
- Use the product documentation to establish configuration, dimensions and accessories.
- Check load, span, temperature and service environment against the performance data before the selection is fixed.
- Download the EPD when a climate declaration, environmental certification or tender requires environmental data.
Important notices
Information on this website is indicative. Read how technical information should be interpreted and verified before it is used as a basis for design.
Technical information and important noticesNeed documentation that isn't published here?
We prepare project-specific calculation data, drawings, BIM models and documentation together with the manufacturer. Describe the project and we will come back with the right documents.
Guides
In-depth guides for specific questions and comparisons.
GRP vs Steel
Weight, corrosion, electrical safety, fire and lifecycle cost — and where steel is still better.
OpenGRP vs Timber
Rot, moisture, dimensional stability, slip resistance and lifecycle cost — and where timber still fits.
OpenLoad and Span Calculation
Point load, distributed load, span and deflection — how to read a load table.
OpenGRP or GFK
Terminology guide: GRP, GFK, FRP and glass reinforced plastic — what the terms mean.
OpenAnti-Slip GRP Grating
Gritted, fine grit, smooth and concave surfaces — how to choose the right texture.
OpenInstalling GRP
Tools, processing, fixings, cut edges and safety before installation begins.
OpenGRP in Saltwater
Corrosion, resin selection, slip resistance and fixings in ports, marinas and coastal facilities.
OpenCan GRP Be Recycled?
Mechanical recycling, service life as a sustainability factor, EPD and transport emissions.
OpenRiser Protection
Fire separation, service penetrations and verifying fire requirements.
OpenGRP Maintenance
What "maintenance-free" means in practice and comparison with steel and aluminium.
OpenNeed technical advice?
Expert support for GRP solutions.
Detailed planning and CAD.
We come to your facility.
Certified installers on site.
Fast and accurate cost estimates.