Over the course of 40 years we have a deep understanding of pavement and highway ironwork performance. Using the very latest tools and software, the Unite range of manhole covers have been engineered for extremely long life.

Key to Unite’s longevity is minimising seat wear between covers and frames. The range has the stiffest cover structure in its class and on top of this, seating which is less vulnerable to any movement caused by cover flexing which may take place.

Unite has been designed to work sympathetically with bedding mortars, reducing stresses on the frame foundation, which has been identified by WRC as a major cause of manhole cover failure.

Internal accessory receiver

Unite incorporates an internal skirt with a sealing face to mate with different specifications of seal plate, depending on the application requirements.

Mortar ‘gripper’ system

Unite’s ‘tread’ feature was developed in response to site observations, which often found mortar had failed to adhere to ironwork. The tread feature and accompanying mortar holes have proven more effective in interlocking with the bedding material than flat underside flange faces of other products.