Silo Covers
Wiefferink silo covers have been a household name in the agricultural sector for over 70 years. Covering silos with digestate is required by law under environmental regulations.
Silo Roof
The Wiefferink silo roof is a durable and efficient covering system that protects silos from rainwater while also containing odors and CO₂. The innovative drainage system prevents water from entering and meets strict environmental standards.
Advantages
Prevents rainwater from entering and gas emissions
Complies with EU environmental directives
Suitable for concrete, steel, or plastic silos
Quick installation
Low maintenance
Long service life
Customized solutions are available for every silo
Double-membrane cover system for biogas plants
The AB (Air Blown) Cover is a durable, gas-tight cover consisting of two membranes, specially designed for biogas and wastewater treatment plants.
AB Cover for biogas plants
The AB (Air Blown) Cover is a durable, gas-tight, double-layer cover specifically designed for biogas and wastewater treatment plants. Thanks to its strong, chemically resistant films and hemispherical construction, it is resistant to weather conditions. In addition, the double-membrane system meets the highest quality standards.
Advantages
Up to approximately 230% greater gas storage capacity than conventional designs
Lower membranes with 35% reduced gas permeability
Low susceptibility to wind
Reduced risk of snow accumulation
The hemispherical design reduces stress on the silo wall
No condensation or corrosive moisture on the silo wall
Easy to access for maintenance and overhaul
Flexible storage systems for digestate, gas, or liquids
Wiefferink's flexible storage systems are designed for storing gas or liquids. They are made from durable materials and offer weather-resistant protection. Various models are available to meet your specific needs. Discover the benefits of the Flexitank, Ecobag, and Combibag, among others.
Flexitank: Flexible storage for liquids
The Flexitank offers a safe, efficient, and flexible solution for the storage and transport of all kinds of liquids—such as water, wastewater, fuels, and chemicals. It is designed for both temporary and long-term use. The Flexitank is easy to install, lightweight, and highly mobile.
Advantages
Suitable for large and small volumes (up to 2,000 m³)
Quick installation and easy transport
Durable, high-quality materials (certified for reuse)
Ideal for remote or hard-to-reach locations
Available in standard sizes or fully customized
Only 2% of its maximum volume when empty – saves space and reduces shipping costs
Ecobag: Flexible storage for digestate
The Ecobag is a sustainable and cost-effective solution for storing digestate and other liquid waste streams. It blends harmoniously into the landscape, requires minimal investment, and can be installed quickly without permanent structures.
Advantages
Storage capacity up to 10,500 m³
Odorless and environmentally friendly (green color)
No building permit required in most cases
Fast, easy installation – no concrete foundation required
Low maintenance, long lifespan (10–15 years)
Minimal environmental impact and low decommissioning costs
Combibag LP
Flexible storage and gas production
The Combibag LP is a sustainable and efficient solution for storing digestate and liquid residues—with simultaneous gas recovery. Like the Ecobag, the Combibag is environmentally friendly, quick to install, and requires no permanent structures.
Advantages
Storage capacity up to 10,500 m³
Odorless and environmentally friendly (green color)
No building permit required in most cases
Quick, easy installation
No concrete foundation required
Low maintenance, long lifespan (10–15 years)
Low environmental impact and decommissioning costs
Gas Buffer
Flexible Gas Storage
The gas buffer is designed for the safe and efficient storage of various types of gas. Its double-layer membrane technology offers flexible capacity and is suitable for both temporary and long-term use – available in various configurations.
Advantages
Storage capacities from 50 to 30,000 m³
Flexible design: dome, silo, partially submerged, or cylindrical
Easily accessible service box for maintenance
High pressure possible (5–70 mbar)
Complete installation with all controls and sensors
Fast delivery
Short installation time
We utilize the latest production technologies and continuously improve our processes and products. With our own laboratories, testing facilities, and strict quality protocols, we guarantee a consistently high level of quality. Wiefferink is certified by KIWA, KOMO, VCA, and ISO 9001:2015.
Certified Quality ✅
