GRP Flowtread Grating

Flowtread grating is a pultruded grating system manufactured using ‘I’ section load bearing bars, which is suitable for broad spans whilst offering a large open area allowing drainage.

The ‘I’ section load bearing bars are mechanically locked and bonded to transverse bars for maximum strength. The GRP Flowtread slatted design provides all the traditional benefits associated with GRP gratings with its high strength to weight ratio and good corrosion resistance.  

Mesh Sizes & Resins 

Grating Depth Standard Panel Size Open Area % Approx Weight Kg/m2

1000 X 6000 / 500 x 6000

60 15

1000 X 6000 / 600 x 6000

60 19



Fire Retardant - Compliance with

Chemical Resistance


Isophthalic Polyester BS476 Part 7, ASTM E-84 & ASTMD635 Good    Grey - RAL7038      Yellow - RAL1021
Vinylester BS476 part 7, ASTM E84, & ASTM D635 Excellent     Grey - RAL7038       Yellow - RAL1021


   Flowtread 25mm section 




      Flowtread 38mm section


  • Corrosion resistance
  • Low maintenance
  • High strength
  • Low weight
  • Non Magnetic
  • Low conductivity
  • UV inhibited
  • Non-sparking
  • High fatigue and impact strength



Flowtread is available as an open grating creating a 50% open area - its advantages over the other GRP products include:-

  • Stiffer & stronger
  • Higher strength to weight ratio
  • Excellent for use where high levels of drainage or liquid flow is needed
  • Can be used effectively where no shockloads are anticipated
  • Can be fabricated to any size


Need help with Technical Specifications?

Click here to find more information. Alternatively, you can call 01642 233299 where an advisor would be happy to help.





Flowtread Load Tables

Currently being updated, please contact our technical team on 01642 233297 for loadings.


 GRP Walkway


 Flowtread GRP Grating