• Silo cover suitable for concrete, element and steel silos.
  • Diameters between ø2 and ø54 meters.
  • Suitable for all European wind and snow zones.
  • Available in various variants such as gas-open and gastight executions.


Silo cover | Gas-open execution

Protect the silo against odour, CO2 emissions and weather with a silo roof or a silo cover from Flexxolutions. This cover can be mounted on almost any concrete or steel silo available on the market. The Flexxocover is available as a gas-open version with welded straps, a separate strap construction for frequent opening and closing or a version in which the roof is stretched by extending the middle column. There are also various versions available in a gas-tight execution, depending on your application. The Flexxocover silo cover is designed to ensure a maximum lifespan in all kinds of circumstances and is therefore extremely durable for our customers. We realise this by choosing the best materials, by using tested components and by certified production and assembly.

Flexxocover silo cover 600x429 px -silo cover-

why de flexxocover and not a regular silo cover?

  • ArtboardCreated with Sketch. The Flexxocover has been successfully assembled on more than 1000 tanks and has been placed without defects in diameters between ø2 and ø54 meters. This broad experience ensures that we can realise the best silo roof for you.
  • ArtboardCreated with Sketch. In hundreds of positions, we apply reinforcements to protect sensitive areas from wear and tear. The combined effect of these reinforcements ensures that the silo roof can last much longer. Would you like to see what such a reinforcement looks like? Then click here!
  • ArtboardCreated with Sketch. All our metal parts that might be in contact with gas are always made of stainless steel-316 because of the minimum sensitivity to corrosion (rust).
  • ArtboardCreated with Sketch. The slope of the silo cover is optimised on a project-by-project basis for snow load, wind forces and pressure and resulting forces on the silo wall. This significantly increases the lifespan of your silo roof!
  • ArtboardCreated with Sketch. We manage the entire process from design and production to assembly ourselves (under KIWA K73883 and ISO-9001). This allows us to deliver maximum quality to you.
  • ArtboardCreated with Sketch. For each silo roof you will receive an extensive report in which all strength calculations, conditions and the resulting force on the silo wall are described. By checking this with the builder, we can prevent unforeseen problems, so that a maximum lifespan can be achieved.
  • ArtboardCreated with Sketch. The foil that is used in our products is extremely stable in shape, it has a breaking strength of 8,000 kg per linear metre produced by a West European supplier.
  • ArtboardCreated with Sketch. Our foil suppliers give a five year guarantee on the material and we give a five year guarantee on the design and processing.


We have the entire chain of sales, R&D, project engineering, production and assembly in-house. This enables us to guarantee you the best quality at the best price.

Your wishes are most important to us. Our experts use our basic design to engineer your project. This ensures an optimal design at the lowest possible investment.

In addition to our sales experts, we also employ mechanical and chemical engineers and textile experts, as well as highly trained professionals in production, assembly and administration to provide you with the best advice.

Every project is customer specific. This keeps us sharp and provides you with the very best cover!

We have been innovating in technical textiles products for decades. We know the market and its possibilities like no other and we cannot wait to share this knowledge with you.

Specifications Flexxocover

  • Available in diameters from ø2 to ø54 meters.
  • Delivery always includes centre column, tensioning system and inspection opening.
  • Standard foil: polyester fabric with 2-sided PVC; 4,000 N/5 cm (900 g/m²). Stronger foils possible if desired or needed.
  • In gastight execution, standard operating pressures from -0.5 to +3.5 mbar. Higher pressures possible on request.
  • Centre columns minimum FSC tropical hardwood type D60. Stainless steel columns possible on request (both stainless steel 304 and stainless steel 316).
  • The designs of our covers are approved in all European countries.
  • The entire construction is designed to be used in all snow and wind zones in Europe, even at larger diameters.
  • In specific cases we can also deliver a Flexxocover without a central column. This cover is equipped with a self-supporting structure.
  • If the cover has to be opened regularly for cleaning or maintenance purposes, we can also deliver a version with a separate strap construction, which makes it possible to open and close the cover within one hour.
  • The gastight cover can be executed with a gas seal on the inside or on top of the silo wall. If mounted on top of the wall, it is still possible to open the silo during stops when the system is in operation.
  • For steel or stainless silo's, tensioning is often carried out by extending the centre column. This ensures an even and uniform tensioned roof.

Any questions?

Would you like more information? Feel free to contact Yeliz:


A newly assembled Flexxocover gas-open version suitable for concrete, element and steel silos has been successfully installed by us on more than 1000 tanks. Click here for more information.

Flexxocover silo cover

The gas-open Flexxocover described above is the standard silo cover. Do you have special wishes or requirements? We can realise all the options available in the market!

The Flexxocover with loose straps is partially open here, so that maintenance can easily and regularly be carried out in a relatively short period of time on the cover, which has been developed in such a way that it takes less than one hour to open and close it.

Flexxocover active maintenance.

The Flexxocover Active Maintenance has been specially developed for customers who want to be able to perform multiple maintenance on the silo or the cover. The cover is designed so that it takes less than one hour to open and close.

Flexxocover spannen middenkolom 500x250 px -silodak-

Tensioned over the centre column.

For steel or stainless steel silos, tensioning is often used by extending the centre column. This ensures a tight assembly.

Are you looking for a different kind of cover?


The gastight design of the Flexxocover ensures its gas-tightness thanks to the gastight top construction, manholes and transition from silo roof to silo wall.


This is a double layer membrane roof. The outer membrane is a tensioned silo roof and the freely moving inner membrane provides a gastight seal.


This double membrane roof is ideal as a cover for silos where biogas is stored or where sustainable energy is generated.

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