Known sometimes as floating lagoon covers, floating cover systems are used in methane farms and anywhere where there is a large area of water or liquid that needs to be contained. The kind of fabric that is used as well as the specs for the cover may vary depending on the type of material that needs to be contained. The cover may float simply on the surface of the material in the tank, fluctuating and remaining in contact with the fluid level or it can be suspended over the material or inflated by collected gases.


floating coversFloating covers may have a skirt on all four sides, which eliminates the necessity to tie the collection system to the berm. The design of the modular tank covers makes it possible for multiple units to be used in conjunction with one another. By creating a design that is not too big for ease of handling, expensive installation costs are eliminated.

The covers are made up of a material that is perfect for biogas collection. It is highly resistant, tough and has a low gas permeability which makes it ideal for the collection of biogases like methane as well as for use as a float cover material.


Appropriately designed and installed floating cover systems prevent severe fluid loss due to evaporation, reduce chemical demand and improve the quality of water by minimizing or totally preventing contamination from airborne particulates, bird droppings, pollen and other contaminants. The covers block sun exposure and hence prevent photosynthesis that causes algae production. The covers are used in anaerobic digester systems in order to capture organic gases as well as minimize the biological oxygen demand.

They are ideal for:

  • Reducing odor contamination in the immediate environment
  • Control of fluid evaporation
  • Prevention of wildlife contamination of the water source
  • Serves as a barrier gas collection
  • Temperature insulation
  • Rainwater barrier & collection


Since being introduced in the market over 30 years ago, floating cover systems serve an important function for many applications. They can provide a service life of at least twenty years. Advancements in technology provide a low cost solution that is really true value for money.