Commissioned by Visser & Smit Hanab B.V., we developed and supplied lightweight manhole covers and frames for this project. Our innovative materials enabled us to provide a practical solution for challenging ground conditions.
Our ongoing search for new lightweight materials led us to develop a manhole frame weighing less than 10% of a conventional concrete frame. This proved valuable on the Sliedrecht project. The entire excavation in the peat was filled with lightweight washed pumice and finished at ground level with lava stone. The lightweight manhole frames make a substantial contribution to an improved ground loading balance.

Important notice!
Due to rising diesel prices, the following applies from 16 March 2026: a fuel surcharge on deliveries. This surcharge applies only to goods delivered by ROMFIX. Collections remain exempt.
Questions? Please get in touch.
Holiday opening hours and deliveries
ROMFIX is closed from 18 December 2026 to 3 January 2027 inclusive.
Ordering online? The last day to place an order is Thursday 17 December. The last delivery day is Friday 18 December.
