• Gastight silo cover suitable for silos made of poured concrete, concrete elements and steel.
  • Diameters between ø2 and ø54 meters.
  • Suitable for all European wind and snow zones.
  • Also available with a gastight seal on top of the silo wall, which makes it possible to open it for maintenance.
  • Equipped with a gastight top construction, man openings and gastight transition from silo wall to silo roof.



Silo cover | GasTIGHT execution

A gastight silo roof is a cover for a silo, which is made completely gastight, virtually emission-free and also suitable as an after fermentation unit. This silo roof offers the solution for the cover obligation that applies in many European countries. Depending on your wishes, the silo cover can be fitted gastight on the inside or on top of the silo edge. This choice has an effect on the extent to which maintenance can be carried out on the cover and the silo. The Flexxocover gastight has been designed to ensure a maximum lifespan in all circumstances and is therefore extremly durable for our customers. We make this possible by choosing the best materials, by using tested components and by certified production and assembly. Ask our sales experts for more information! This product is also available in a gas-open execution.

Flexxocover gasdicht manopening 800x700 px -silodak gasdicht-

why the flexxocover GASTIGHT and not a regular gastight silo roof?


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, which 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 GASTIGHT

  • Available in diameters from ø2 to ø54 meters.
  • Delivery always includes a centre column, tensioning system and inspection opening.
  • Standard foil: polyester fabric with 2-sided PVC; 4,000 N/5 cm (900 g/m²). Stronger foil possible if desired or needed.
  • In gastight version, standard operating pressures from -0.5 to +4.5 mbar. Higher pressures possible on request.
  • Centre columns minimum FSC tropical hardwood type D60. Stainless steel-316 columns available on request.
  • 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.
  • The gastight execution is available with a gas seal on the inside of the silo or, if desired, on top of the silo wall. When mounting on top of the silo wall, it is also possible to open the silo during stops in operation.

Any questions?

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


Flexxocover gasdicht silodak montage binnenzijde silowand met pijl-silodak gasdicht-

Attachment inside silo wall

This assembly method is often used for cost reasons.

Flexxocover gasdicht silodak montage bovenop silowand met pijl -silodak gasdicht-

Attachment on top of silo wall

The advantage of this assembly method is that the cover can be re-opened and closed in a gastight way during stops in the operational stage.

Are you looking for a different kind of cover?

FLEXXOCOVER gas-open execution

The Flexxocover is suitable for concrete, element and steel silos and has been successfully assembled by us on more than 1000 tanks.


The Flexxocover with lung is a double membrane roof. The inner membrane keeps (bio)gas inside and the tensioned outer membrane keeps out external influences.


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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