Guarding height
Increasing height or design loading typically adds £40–£120/m through heavier rails, posts and connections.
Fixing substrate
Chemical anchors, spreader plates or weak-edge strengthening can add £30–£100/m compared with routine concrete fixings.
Geometry
Raking rails, tight radii, corners and short returns commonly increase the installed rate by 15–35%.
Finish
Enhanced powder coating, galvanising after fabrication or specialist metallic finishes can add £25–£90/m.
Access
Scaffold adaptations, podium working or installation at exposed edges can increase erection costs by 10–30%.
Engineering
Bespoke calculations, testing and fabrication drawings can add £1,500–£5,000 to a small or medium package.