Marine Containment

Floating Silt Curtain Design and Installation

Sediment Curtain controlling silt plume

Floating silt curtain, sediment curtain, silt boom and turbidity curtain are all common names given to floating curtains designed to contain and control silt migration in waterways and aquatic systems. As a result, they are commonly used during project construction such as dredging and excavation.

Trade Enviro specialise in product design, management, supply, deployment and installation of silt curtains to control silt migration at your project site.

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Or call us on: 0434 314 803

Typical Applications:

  • Marine construction activities e.g. building projects, jetty and concrete bridge construction
  • Development projects running adjacent to waterways
  • Dredging Projects
  • Piling operations
  • Marine excavation
  • Aquatic plant control
  • Algae control
Curtains Design and Installation
Preventing silt migration during construction of rock wall

Silt Curtain Design & Installation

We have experience with project demands including installation requirements that take into account flow rates. We also have a thorough understanding of the limitations and measures required to control releases and ensure project time frames and conditions are met. Silt curtain project requirements can be time-consuming. Trade Enviro can also offer a complete silt curtain product design service along with supply and install, Australia wide.


Dredging Operation - Silt effectively contained

Speak to the Experts

Our range of silt curtains are suitable for long and short-term deployments. Our full range is completely scalable. Building construction demands, management timeframes and conditions contribute to the selection and deployment of your silt curtain. We offer specialised consultancy and support to assist with making the right choice for your requirements.

Protecting waterways

Float Size/Free BoardDepth/draftlengthBallastConnection MethodSkirt properties
100mm/PVC1mtr15mtr6mmASTMNonwoven 90 micron
100mm/PVC2mtr15mtr6mm/8mmASTMNonwoven 90 micron
100mm/PVC3mtr15mtr6mm/8mmASTMNonwoven 90 micron
150mm4mtr15mtr8mmASTMNonwoven 90 micron
150mm1mtr15mtr8mmASTMNonwoven 90 micron
150mm2mtr15mtr8mmASTMNonwoven 90 micron
200mm3mtr15mtr10mmASTMNonwoven 90 micron
200mm4mtr15mtr10mm/12mmASTMNonwoven 90 micron
* If viewing on a mobile device please slide from right to left to see full table data.
* Heavy Duty options available

Click here for explanation of technical terms used in table above

Technical Terms:

  • FREEBOARD: Distance from water line to top of the float chamber
  • SKIRT: Material used between the float and the ballast chain pocket (PVC)
  • DRAFT: Distance from the water line to the bottom of the curtain
  • BALLAST: Area of curtain closest to the sea floor, weighted with gal chain to ensure curtain shape and integrity
  • CONNECTOR: ASTM standard, Z-connector

Heavy Duty Sediment Curtains

Trade Enviro supplies HEAVY DUTY curtains for heavy duty applications. We offer a range of inexpensive sediment curtains designed for short-term use to full-scale long-term deployment projects. Ideally suited to waterways adjacent to construction sites, rock walls, mining, and industrial applications.

Our silt curtains can be used as an effective barrier in calm water environments such as aquatic ponds along with rivers, estuaries and open water conditions to control suspended solids and settle silt releases. Our curtains are built tough for Australian conditions with the highest grade construction materials available.

Silt Curtain Price

Curtain management need not be expensive but it is if you have to do it twice

Do you need a silt curtain for your next construction project? Do you have DERM release limits? If so talk to us, we typically match any competitive quote on the market for quality silt curtains, accessories and associated products and are ready to assist. If you need pricing or your next project, be sure to call us today.

Project Considerations

  • Timeframe? How long do you need your curtain in the water?
  • What’s the condition of the water? is it tidal?
  • Will I need a directional type anchor system or an embedment style anchor system?
  • How will a larger tide affect my curtains?
  • How much buoyant force do I require for the most effective result?
  • What ballast requirements do I have?
  • What impact will I have on the safety of marine animals?

You can still create an effective curtain barrier and ensure a safe passage for marine animals to pass under the curtain. The principle of a silt curtain is to deflect the water towards the bottom of the sea floor taking suspended particles with it. Only a portion of water filtrates through the curtain textile.

Water follows the path of least resistance and therefore when the water passes under the curtain the suspended soil contaminants and silt sediment is closer to the sea floor promoting it to drop out of suspension and settle to the sea floor faster. Silt curtains primary design function is to promote the settlement of particles without disruption to aquatic systems nearby.

About Silt Curtains

Aquatic booms and barriers such as silt curtains are designed to control the movement of silt from activity in the marine environment; these products consist of a closed cell chamber and a skirt that sits beneath the surface of the water.

The skirt is specially weighted to sit perpendicular to the water column and is usually made of a geotextile mesh, woven or non-woven material.

Silt usually migrates within the first 2 meters of the water column from surface disruption. It’s important to control and settle the sediment so it has no impact on nearby aquatic systems.

Silt curtains are available with different length skirts depending on the application and different size skirts require different floatation and ballast.

Depending on the tidal influence, wind and conditions various anchoring techniques are available.


What is Silt Curtain?
Silt curtains are aquatic systems constructed from Geotextile. They feature floats that sit on top of the water surface and a skirt that sits perpendicular to the water surface. As soil contaminants such as silt approach the silt curtain skirt they are prevented from migrating past the barrier.  This causes the suspended sediment and silt to drop to the bottom of the aquatic floor within the confines of the water column.
How does a silt curtain work?
Silt curtains provide a permeable barrier, trapping silt in place. The barrier is anchored in place to prevent movement due to wind, currents or tidal flow.
How to install silt curtain?
We recommend using an experienced operator to install your silt curtain. If unsure speak to us and we can advise you. In general, however, the steps can be broken down into the following:

  1. Join the curtain sections, starting with the chain section at the bottom of the curtain.
  2. Once assembled, tow into position
  3. Anchor the silt curtain into place
How much do silt curtains cost?
This depends on your requirements. Silt curtain price is calculated based on the length of curtain required and other factors including tidal influence and wind conditions.
Can they be reused?
Silt curtains can be re-used in some circumstances. They must be cleaned before storage. Storage requirements may differ based on the specifics of your product. If unsure speak to us first.
Can a silt curtain be hired
In some cases this is possible, depending on the condition of the product and storage requirements. Speak to us today about our silt curtain hire services and your specific requirements and we’ll let you know if this is a possibility for your project.
Can you arrange installation of my silt curtains?
Yes. Trade Enviro designs, supplies and installs silt curtains suitable for waterways anywhere in Australia.
What is the difference between a silt boom and a silt curtain?
They are the same product. Silt curtains are often referred to as silt booms or turbidity curtains.
What accessories are available?
Available Accessories include:

  • Woven Geotextile
  • Floats
  • Heavy Duty Moulded Connectors
  • Concrete Anchor Set
  • Tidal Riser

Get in Touch Today
Or call us on: 0434 314 803