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Civil Method Statement For Wet Area Water Proofing Works

Following equipment and tools may be used as required during Wet Area Water Proofing works.

  • Wire Brushes
  • Soft Brushes
  • Air Compressor
  • Empty containers / drums
  • Stirrer / Rod
  • Paint Brushes
  • Paint rollers
  • Wheel barrow
  • Spatula
  • Other hand tools

  • Waterproof 360 PU (Liquid applied Polyurethane Waterproofing Membrane)

WATER PROOFING PROCEDURE

Storage and Handling of Materials:

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  • Materials shall be stored in a cool & dry place and avoid putting in direct sun light.
  • Materials shall be placed in a way to avoid the direct contact with ground soil.
  • Materials shall not be exposed to the fire or naked flames in any circumstances.
  • Material Safety Data Sheet (MSDS) shall be followed for safety and handling recommendations.
  • Material may store for 12 months from the date of manufacturing, in a fresh and dry area in unopened original packaging.
  • Only a limited required quantity of Waterproof material shall be brought to the site.

Surface Preparation Before Water Proofing:

  • Surface / substrate preparation is the most important for Liquid Applied Polyurethane Waterproofing membrane before application.
  • The concrete surface / substrate shall be clean and free from contamination such as dust, oil, grease, organic growth and release agents etc.
  • All loosely adhering particles such as rust, mortar and cement laitance shall be removed.water proofing procedure method statement wet areas
  • The surface would be cleaned by wire/stiff brushing and finally soft brushing or compressed air.
  • The surface shall be free from standing water.
  • Maximum up to 5% moisture contents are acceptable in the substrate.
  • Pipes/ Sleeves, conduits, drains or any other penetrations shall be in place and protected with cement sand mortar, prior to the application, chamfer shall be made on corners.
  • All cracks and joints shall be sealed as per manufacturer recommendations, at least two days before application.
  • The surface shall be prepared in such a way to allow mechanical key and to achieve a maximum adhesion of the coating to the substrate.
  • Application of water proofing system shall be done by experienced personnel and as per manufacturer recommendations.

Prime Coating:

  • The concrete age should be at least 28 days to start waterproofing.
  • Brittle substrate shall be primed with Waterproof 310 PU PRIMER.
  • On stable, sound and well prepared concrete surfaces, Waterproof 360 PU, diluted 5% with Xylene may be used as primer.
  • Prime coat shall be applied with brush or roller in a continuous uniform coating. Allow drying time for minimum 3 hours to proceed for next coat.

Coating Application:

  • Two coats of Liquid Applied Polyurethane Waterproofing membrane shall be done.
  • The first coat of Liquid Applied Polyurethane Waterproofing membrane shall be applied with brushes or rollers in a continuous uniform coating.
  • The theoretical film thickness shall be around 0.5mm, as per manufacturer’s recommendations.
  • At least 12 but not more than 36 hours drying time shall be allowed between the coats.
  • Second coat shall be applied at right angle to the first coat.
  • Each layer should not be more than 0.50 mm thick.
  • Waterproofing shall be extended up vertical surfaces minimum 100 mm or as indicated in the shop drawings.
  • After proper curing and before installation of mortar and ceramic tiles, a 100 microns polyethylene sheet shall be placed on top of waterproofing, as per specifications.

Inspection and Testing:

Water shall be provided for flood test for minimum 24 hour for all waterproofed floor areas.

 Cleaning:

Clean all tools and equipment immediately before polymerization with Xylene.

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