Marine Containment

Floating Silt Curtain

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 aquatic systems. As a result, they are commonly used during project construction such as dredging excavation.

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

Contact us today for a free consultation   Or call us on: 0434 314 803

Typical Applications:

  • Marine construction activities e.g. jetty and bridge construction
  • Development projects running adjacent to waterways
  • Silt Curtain Dredging Projects
  • Piling operations
  • Marine excavation
  • Aquatic plant control
  • Algae control

Sediment Silt Curtains with digger and truck

Silt Curtain 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 requirements can be time-consuming and Trade Enviro can also offers a complete service to design, supply and install your silt curtains Australia wide to provide a controlled area for silt migration.


Silt Curtain Dredging Operation

Speak to the Experts

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

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

We also supply 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 construction sites, mining, and industrial applications.

Our silt curtains can be used as an effective silt 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 materials available.

Silt Curtain Price

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

Talk to TRADE ENVIRO next time you go into the water requiring silt curtains. Do you need a silt curtain for your next 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. If you need silt curtain price information for 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 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 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 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; they consist of a closed cell floating 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, 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 a float tha sites on top of the water surface and a skirt that sits perpendicular to the water surface. As silt and sediment 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 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 lossely 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 a silt curtain be hired
In some cases this is possible. 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. We can design supply and install silt curtains 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.

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