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.