How long does rock armour last?

Rock armour isn’t a walkway. The big, uneven stones can be slippery and hazardous, especially when wet.

We don’t replace your engineer, but we do more than just drop rock at the gate. We work with your team on sizing, build-ups and constructability so your defence works on paper and on site.

Rock armour gives you a solid, natural-looking barrier that helps take the force out of the waves before they hit the shore. In many exposed spots, it can work out cheaper to install and simpler to look after than a rigid concrete wall, gabions or sheet piles.

Yes, in practice, “Rip rap” and rock armour refer to the same type of protection: heavy rock placed to shield shorelines, riverbanks and structures from erosion and scour. “Rip rap” size vary between 100/500mm stone.