Floating Covers & Tensioned Roof

Floating Cover

Cost-effective and durable Floating Covers

A Floating Cover is a practical alternative to a roof on an above-ground circular tank. While still extremely durable, it provides a cost-effective alternative where your above-ground circular tank is not strong enough to support a cover. The floating cover rests on the manure, rising and falling as the volume varies, providing odour control as well as protection against evaporation or dilution.

Custom manufactured Floating Covers

Our floating covers are produced from Nicoflex® 800 HPSO KIWA certified foil and are of exactly the same quality as the material used for the tensioned roofs. Available in sizes from 9-35metre diameter, our floating covers are custom manufactured to match the needs of the individual client and fitted following the Dutch BRM standard for slurry storage.

Tensioned cover

The Tensioned cover is the ideal solution for covering your above ground circular tank. The roof can be placed on almost every type of slip, for instance steel, concrete and even wood. The materials used to construct the cover make perfect for usage on manure storage systems.

Product features

The heart of the cover is the centre column. The standard column used is a tropical hard wood pole. That will last for hundreds of years. This is bolted to the floor of the tank using a stainless steel bracket. A stainless steel cone is put on top of the column and the material is then bolted in place. Vents in the cover allow gases to escape. The foil used for the actual tensioned cover is a polyester weave, coated on both sides with a layer of PVC. Total weight of the foil is 850 gr/m2. Standard colour of the foil is grey, delivery in green is optional. Special bands are welded on the foil. These bands are connected to the top dish with stainless step buckles. To tension the cover, a galvanised or stainless steel, bended tube is placed into the edging. Stainless steel ratchets are used to tension the cover. To inspect the silo, there will be placed one or more manholes in the cover. Different numbers, sizes and locations of the manholes are possible. Every cover is custom made to the tank where is has to be mounted on. The cover itself has a reference period of 10 years. Available diameters run from 8.0 up to 40.0 meters, depending on snow and wind load.
Finally covers for above ground slurry tanks increase the actual slurry storage of t he tank by one-fifth, by keeping the rain out. It keeps in nitrogen that could otherwise be lost to the environment and reduces the cost of spreading rain water normally collected by the tank. Enables end-user to comply with the environmental permit for intensive farming. Environment agencies recommendation that all slurry stores are now covered.


Contact us with any enquiries. Visit the gallery for more images of our floating covers.