Manhole Rehabilitation

Permafix Manhole Rehabilitation

Permafix is a system which allows for the permanent reinstatement of manholes in roadways / carriageways which prevents subsidence, shifting or moving of covers and frames. As shown in the images, these are typical manholes that can be found throughout the country.

Manhole figure 1 Manhole figure 2

Figure 1 Subsided manhole

Figure 2 Bitumen surface deterioration

The Permafix System, which uses mastic asphalt in the bedding and surround of the frame to finish road level, prevents shifting, sinking or collapse of the frame and cover. Traditionally cut bricks, blocks, sand and cement have been used in setting manhole frames. As illustrated by the photographs this finish has a short lifespan.

Manhole figure 3 Manhole figure 4

Fig 3.  Frame exposed

Fig. 4  Failed concrete surround

The Permafix System ensures that a permanent reinstatement is achieved!