The document provides guidance on surface preparation for waterproofing. It outlines that the surface must be structurally sound, cracks must be treated, the surface must be clean and free of contaminants, holes/voids must be repaired, and protrusions/sharp edges removed. It also notes concrete must cure for 28 days before application and the surface must be dry with 5% or less moisture. Priming and applying two coats of a waterproofing membrane is also recommended.

1. Surface Preparation
Surface Preparation for Waterproofing
 Surface must be structurally sound
Cracking or movement of the substrate after a membrane has been
installed is likely to cause the membrane to fracture.
 Treat cracks and movement joints
Cracks, construction joints, expansion joints and other mobile joints should
be treated in accordance with the membrane manufacturers
recommendations.
 Clean and free from any contaminant materials
A membranes bond will fail at its weakest point so if applied over dust,
loose materials or poorly bonded contaminants it will fail prematurely.
 Repair any holes/voids in the substrate
A uniform thickness membrane is very difficult to achieve over holes/voids.
 Remove any protrusions and sharp edges
A uniform thickness membrane is very difficult to achieve over protrusions
or sharp edges.

2. Surface Preparation
Surface Preparation for Waterproofing
 Concrete should be aged for 28 days and screeds should be
aged for 7 days
Cementitious surfaces can develop plastic shrinkage cracks during
initial curing which must be totally formed before the membrane is
applied. Time must also be allowed for the development of
efflorescence which must be removed before the membrane
application.
 Ensure substrate is dry (5% moisture or less)
High substrate moisture content will form blisters in the membrane
during curing.
 Seal wet or freshly laid concrete with ARDEX WPM 300
Allow to cure overnight. Provides a concrete curing membrane and
barrier coat.

3. Surface Preparation
Priming for Waterproofing
Porous surfaces are primed to consolidate residual dust and
reduce the porosity of the substrate to avoid excessively fast
interface drying and blistering of the membrane
Wet or fresh concrete, PVC and metal are primed to provide a
barrier between the substrate and the membrane
 All cementitious substrates should be primed with ARDEX WPM
265 Water Based Primer at a rate of 6m2/L
 Highly porous substrates may require 2 coats
 PVC should be primed with pink plumbers primer
 Metal surfaces should be primed with a two pack epoxy zinc
phosphate primer
 If moisture content is too high or concrete is freshly laid, use
ARDEX WPM 300 water based epoxy as a barrier coating
Allow primer to dry prior to waterproofing

4. CRITICAL AREAS OF WATERPROOFING
Other than the main treatments of waterproofing the following are the most critical
areas which needs to be addressed before the main waterproofing treatment
• Cracks & Construction Joints
• Rain Outlets / Bore Packing
• Dissimilar Construction Joints / Corner treatment
• Surface Moisture
• Corners
• Protection of Waterproofing Treatment
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5. CRITICAL AREAS OF WATERPROOFING
Cracks & Construction Joints
Surface cracks
•Surface Crack
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6. CRITICAL AREAS OF WATERPROOFING
Cracks & Construction Joints
Crack Chasing
• Surface crack
• Crack Chasing
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7. CRITICAL AREAS OF WATERPROOFING
Cracks & Construction Joints
Crack filling with sealant
• Surface crack
• Crack chasing
• Crack filling with sealant
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8. CRITICAL AREAS OF WATERPROOFING
Cracks & Construction Joints
Priming with WPM 300
• Surface crack
• Crack chasing
• Crack filling with sealant
• Priming with WPM 300
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9. CRITICAL AREAS OF WATERPROOFING
Cracks & Construction Joints
1st Coat of WPM 002
• Surface cracks
• Crack chasing
• Crack filling with sealant
• Priming with WPM 300
• 1st Coat of WPM 002
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10. CRITICAL AREAS OF WATERPROOFING
Cracks & Construction Joints
Reinforcement cloth
• Surface cracks
• Crack chasing
• Crack filling with sealant
• Priming with WPM 300
• 1st Coat of WPM 002
• Reinforcement cloth
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11. CRITICAL AREAS OF WATERPROOFING
Cracks & Construction Joints
2nd coat of WPM 002
• Surface crack
• Crack chasing
• Crack filling with sealant
• Priming with WPM 300
• 1st Coat of WPM 002
• Reinforcement cloth
• 2nd coat of WPM 002
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12. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
Core cutting
• Core cutting
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13. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
Cleaning
• Core Cutting
• Cleaning
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14. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
Pipe Fixing
• Core cutting
• Cleaning
• Pipe fixing
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15. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
Pipe fixing
• Core cutting
• Cleaning
• Pipe fixing
• Pipe fixing
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16. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
Filling with WPM SG
• Core cutting
• Cleaning
• Pipe fixing
• Pipe fixing
• Filling with WPM SG
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17. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
Priming with WPM 300
• Core cutting
• Cleaning
• Pipe fixing
• Pipe fixing
• Filling with WPM SG
• Priming with WPM 300
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18. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
1st Coat of WPM 002
• Core cutting
• Cleaning
• Pipe fixing
• Pipe fixing
• Filling with WPM SG
• Priming with WPM 300
• 1st Coat of WPM 002
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19. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
Reinforcement cloth
• Core cutting
• Cleaning
• Pipe fixing
• Pipe fixing
• Filling with WPM SG
• Priming with WPM 300
• 1st Coat of WPM 002
• Reinforcement
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20. CRITICAL AREAS OF WATERPROOFING
Rain Outlets/ Bore Packing
2nd Coat of WPM 002
• Core cutting
• Cleaning
• Pipe fixing
• Pipe fixing
• Filling with WPM SG
• Priming with WPM 300
• 1st Coat of WPM 002
• Reinforcement
• 2nd Coat of WPM 002
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21. CRITICAL AREAS OF WATERPROOFING
Dissimilar Construction Joints / Corner treatment
Dissimilar joints
• Dissimilar joints
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22. CRITICAL AREAS OF WATERPROOFING
Dissimilar Construction Joints / Corner treatment
Surface consolidation
• Dissimilar joints
• Surface consolidation
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23. CRITICAL AREAS OF WATERPROOFING
Dissimilar Construction Joints / Corner treatment
Moisture barrier coating
• Dissimilar joints
• Surface consolidation
• Moisture barrier coating
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24. CRITICAL AREAS OF WATERPROOFING
Dissimilar Construction Joints / Corner treatment
1st Coat of WPM 002
• Dissimilar joints
• Surface consolidation
• Moisture barrier coating
• 1st Coat of WPM 002
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25. CRITICAL AREAS OF WATERPROOFING
Dissimilar Construction Joints / Corner treatment
Reinforcement cloth
• Dissimilar joints
• Surface consolidation
• Moisture barrier coating
• 1st Coat of WPM 002
• Reinforcement cloth
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26. CRITICAL AREAS OF WATERPROOFING
Dissimilar Construction Joints / Corner treatment
2nd Coat of WPM 002
• Dissimilar joints
• Surface consolidation
• Moisture barrier coating
• 1st Coat of WPM 002
• Reinforcement cloth
• 2nd Coat of WPM 002
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27. CRITICAL AREAS OF WATERPROOFING
Surface Moisture
Moisture raising in the
surface
• Moisture raising in the surface
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28. CRITICAL AREAS OF WATERPROOFING
Surface Moisture
Moisture barrier coat
• Moisture raising in the surface
• Moisture barrier coat
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29. CRITICAL AREAS OF WATERPROOFING
Protection of Waterproofing Treatment
Waterproofing Treated
surface
• Waterproofing treated surface
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30. CRITICAL AREAS OF WATERPROOFING
Protection of Waterproofing Treatment
Damages to membrane
• Waterproofing treated surface
• Damages to treated surface
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31. CRITICAL AREAS OF WATERPROOFING
Protection of Waterproofing Treatment
Protection plastering
• Waterproofing treated surface
• Damages to treated surface
• Protection plastering
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32. WATERPROOFING
SYSTEM
RECOMMENDATIONS
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33. WET AREA (BATHROOM, TOILET, BALCONY) WATERPROOFING
WT1 - WPM 002 – Two component Acrylic Co polymer modified waterproofing System
ADHESIVE WPM 002 WPM 002 WPM 300 Concrete, Timber or
AND TILING F/C Substrate

34. WET AREA (BATHROOM, TOILET, BALCONY) WATERPROOFING
WT1 - WPM 002 – Two component Acrylic Co polymer modified waterproofing System
• Surface preparation
• Crack treatment
• Wall consolidation
• Bond breakers/cove installation
• Priming with WPM 300
• 1st coat of WPM 002
• Reinforcement installation in the
corners using WPM deck web over
wet coat of WPM 002
• 2nd coat of WPM 002
• Protection plaster

36. ROOFS & DECKS WATERPROOFING – PROTECTED
RP2 - WPM 002 – Two Component Acrylic Co Polymer Modified Waterproofing System
WPM 002 WPM 002 WPM 300 Concrete, Timber or
SCREED / TILING F/C Substrate

37. ROOFS & DECKS WATERPROOFING – PROTECTED
RP2 - WPM 002 – Two Component Acrylic Co Polymer Modified Waterproofing System
• Surface preparation
• Crack treatment
• Wall consolidation
• Bond breakers/cove
installation
• Priming with WPM 300
• 1st coat of WPM 002
• Reinforcement installation in
the corners using WPM deck
web over wet coat of WPM
002
• 2nd coat of WPM 002
• Protection plaster
• Necessary screeding/tiling