Croom Concrete manufacture and produce precast concrete manholes, manhole rings and reinforced access covers. Precast Concrete OG pipes are also available in sizes 225mm up to 1500mm.

  • Precast Concrete Manholes
  • Precast Concrete Manholes
  • Precast Concrete Manholes
  • Precast Concrete Manhole Rings

Benefits of Manholes

  • Precast concrete manholes are straightforward to assemble and easy to install, reducing the need for skilled labour.
  • Precast concrete manholes are rigid under loads.
  • All precast manholes are supplied with Steel coated steps, all which conform to EN 131010: 2002 Class C.
  • Concrete manholes have a design life in excess of 50 years.
  • By using Sealant a flexible water tight seal is created between each of the manhole sections.


  • Precast concrete manhole rings are manufactured with diameter sizes of 900mm; 1200mm and 1500mm.
  • Heights available are 1m, .75m, .5m and .25m.
  • All units are manufactured in a wide range of depths, creating a modular system so that all type of manhole depths can be accommodated

Manhole Steps

All Manhole steps are fitted during manufacturing, guaranteeing no sharp edges on steps, and removing the risk of injuries. They are bright orange coloured, making them visible in the dark shafts.

Proper Handling Facilities

All units are manufactured by Croom Concrete with two 25mm lifting holes.
Units should be stacked upright when being stored on site.

Declaration of Performance (DoP) Certs


Drainage Products

Croom Concrete’s pre-cast manholes, manhole rings, reinforced access covers and gully pot risers are growing in popularity in the field of civil engineering, and are proving their worth in safety and reduced labour costs. 

New Slurry Store Southern Wales

Customers Eurof and David Jones from Llangadog in South Wales recently choose Croom concrete for the supply of precast for there new slurry store. The external measurements of this massive store were 100ft in width by 210ft in length.

Croom Solves Slurry Problem with a Double-Depth Concrete Tank

Long wet winters had been causing problems for Stephen James, the new Welsh NFU president, at his 500 acre dairy farm in Pembrokeshire. He needed extra storage capacity in his slurry tank, and was also keen to improve comfort for…

Road underpass was turnkey job

In this article from the Farmers Journal, Paul Mooney speaks to Joe O’Donoghue of Michelstown, who decided to fully contract out the construction of a road underpass on his farm. When it comes to a farm building project some farmers…

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Contact us by email,, call us on 061 397479 or fill in our contact form.