• Precast Gas-tight outer roof

  • 37m diameter double membrane gas tight roof

  • Double membrane & concrete roof combination

  • Precast concrete gas tight roof

Roof Types

With the diversity on offer by a wide range of Biogas service providers it has been critical for A-Consult to develop its precast concrete tank system to allow the different types of roof installation required by the various process techniques.

Foil Fabric Double Membrane – Gas Tight

  • Manufactured from biaxel reinforced fabrics with a high grade chemically resistant PVC coating
  • Operational pressures varying from 0 to 5mbar, higher pressures can be accommodated
  • Supplied with desulphurisation netting (netting strength 400kg/m2)
  • Offering maximum levels of gas storage with domes available to accommodate tank structures up to 40m diameter
  • Service openings available upon request
  • Available in Quarter Dome option, offering all the benefits of a standard double membrane roof but with a lower dome height to assist with potential planning restrictions.

Insulated Precast Concrete – Gas Tight

  • Available as pre-insulated unit
  • PE-Lined for concrete protection in the gasification zone
  • Robust construction allows pre-formed openings to support mixers, access hatch and pressure release plates
  • Service openings and man way access are a few options made available on this extremely flexible roof solution
  • Typically cheesecake or half moon segments.

Non Gas Tight Precast Concrete Roof

Foil Fabric Single Membrane – Non Gas Tight

  • Reduces emissions of both gas and odour.
  • Available in Grey or Green.
  • Openings available to allow over the top mixing.
  • Robust construction using UV resistant reinforced foil.

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