Soudaplug ST
Waterproofing Specialist formulation

Soudal Singapore product

Soudaplug ST

A rapid-setting cementitious mortar for stopping active water leaks and repairing suitable concrete, masonry and stone, including the finishing layer in the Soudapack WST penetration detail.

Product description

Rapid leak stopping

Mix Soudaplug ST with clean water to form a fast-setting mortar for active leaks, cracks, honeycombing and repair work in suitable concrete, masonry or stone.

Work in small batches

The mortar sets within a few minutes. Prepare the opening and materials before mixing, follow the water ratio precisely and use it as the finishing layer with Soudapack WST where that system detail is specified.

Preparation and applicationFollow the product instructions step by step.

Use the guidance and documents for your chosen product. Contact us if the English TDS or SDS you need is not listed below.

  1. 01

    Confirm that a rapid-setting hydraulic mortar suits the leak, substrate and water pressure, and provide a route for the water while you work.

  2. 02

    Cut or rake the crack, hole or joint back to sound material and remove loose concrete, dust and laitance.

  3. 03

    Mix only the quantity you can place within the very short working time, using clean water at the stated powder-to-water ratio.

  4. 04

    Press the stiffening mortar firmly into the opening and hold it in place until it has set and the flow has stopped.

  5. 05

    Once the plug has set, complete the surrounding detail with the waterproofing or finishing products specified for the structure.

Product videosSee how the product is used.

Product documentsTechnical and safety documents.

Find the current technical and safety information available for this product, along with relevant test or approval documents.

Product documentsRequest the English TDS or SDS.

Contact the Singapore team for the correct technical, safety or supporting document for this product.

Request product documents

For the best resultMatch the product to the materials and application.

These practical points help you achieve a reliable result.

  • A rapid plug stops water locally. It is not a waterproofing system on its own.
  • Setting time shortens sharply as temperature rises. Mix small quantities and do not retemper the mortar with extra water.
  • For structural cracks, moving joints or continuing water pressure, follow the documented repair design.
  • Before starting, read the current technical and safety information for the product.
  • If the materials, coatings or site conditions are unfamiliar, test adhesion and compatibility on a prepared area first.

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Product selection help

Not sure whether this product fits the job?

Tell the local team what you are joining or sealing, the size of the job and where it will be used. Add photographs and any project requirements that matter.