Silt Curtain
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Silt Curtain


Silt Curtain has been specifically developed for New Zealand marine and civil contractors providing a balance between price, quality, effectiveness and durability.

The float casing is constructed from PVC coated polyester which is longitudinally reinforced with  polyester webbing . Floats are integrated into the casing using oil resistant, crumble proof closed cell PE foam
block. A webbing reinforced PVC coated chain pocket is attached to the bottom of the skirt. Standard skirt fabric is 300gsm non woven polypropylene however a range of alternative materials are available including woven and  non woven geotextile, high strength woven polyester,  impermeable coated fabrics and various mesh  configurations.

Curtains are available in 10, IS or 20cm sections.  Ajoining system has been developed to provide simple but effective removal and attachment of sections both on land and in the water. Long length curtains can be factory pre-joined to provide easily deployable bundles  minimizing the onsite installation time.

Curtains are configured by applying the appropriate  floats model to the most suitable skirt material. Floats  are costed per lineal metre, skirts are costed per square metre. Contoured end price is determined at max skirt depth ego 1 to 4m contour over 20m is charged at 20 x 4m.

Powerpac Onsite is able to configure a silt curtain to meet the anticipated environmental and hydraulic  conditions, however, the ultimate effectiveness is only as good as the base information provided by clients. The primary factors to be considered are:
  • Environmental Loadings: When determining an  appropriate silt curtain for a location waterflow and wind loading will determine the required longitudinal strength  and anchoring arrangements.
  • Wind Loading
  • Current Loading
  • Deploying Silt Curtains: In tidal areas where there is  little tidal stream, there will still be impoundment loadings  effecting the curtain. This is the effect of the water either entering and exiting the area, contained by the curtain and is determined by the area impounded multiplied by the tidal range the resulting water volume which is then interpolated against a tidal curve for the area to estimate the flows.

Call us for more info. - 0800 23 57 89

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We know how important it is to get the right tool for the job. That’s why we have product specialists with a high level of technical knowledge & expertise, to give you the right advice to choose the right product. After 40 years in the industry, we know what we’re talking about.
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PHONE    0800 654 030
EMAIL      sales@powerpac.co.nz
3 Mohuia Crescent
Porirua 5022
PO Box 50 522
Wellington 5240
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