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.
Transcript
Surface Preparation
Surface Preparation for Waterproofing
Surface must be structurally soundCracking or movement of the substrate after a membrane has been installed is likely to cause the membrane to fracture.
Treat cracks and movement jointsCracks, construction joints, expansion joints and other mobile joints should be treated in accordance with the membrane manufacturers recommendations.
Clean and free from any contaminant materialsA 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 substrateA uniform thickness membrane is very difficult to achieve over holes/voids.
Remove any protrusions and sharp edgesA uniform thickness membrane is very difficult to achieve over protrusions or sharp edges.
Surface Preparation
Surface Preparation for Waterproofing
Concrete should be aged for 28 days and screeds should be aged for 7 daysCementitious 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 300Allow to cure overnight. Provides a concrete curing membrane and barrier coat.
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
Wednesday 12 April 2023 4
CRITICAL AREAS OF WATERPROOFING
• Cracks & Construction Joints
• Rain Outlets / Bore Packing
• Dissimilar Construction Joints / Corner treatment
• Surface Moisture
• Corners
• Protection of Waterproofing Treatment
Other than the main treatments of waterproofing the following are the most critical
areas which needs to be addressed before the main waterproofing treatment
Wednesday 12 April 2023 5
CRITICAL AREAS OF WATERPROOFINGCracks & Construction Joints
Surface cracks
•Surface Crack
Wednesday 12 April 2023 6
CRITICAL AREAS OF WATERPROOFINGCracks & Construction Joints
Crack Chasing
• Crack Chasing• Surface crack
Wednesday 12 April 2023 7
CRITICAL AREAS OF WATERPROOFINGCracks & Construction Joints
Crack filling with sealant
• Crack filling with sealant
• Surface crack• Crack chasing
Wednesday 12 April 2023 8
CRITICAL AREAS OF WATERPROOFINGCracks & Construction Joints
Priming with WPM 300
• Priming with WPM 300
• Surface crack• Crack chasing• Crack filling with sealant
Wednesday 12 April 2023 9
CRITICAL AREAS OF WATERPROOFINGCracks & Construction Joints
1st Coat of WPM 002
• 1st Coat of WPM 002
• Surface cracks• Crack chasing• Crack filling with sealant• Priming with WPM 300
Wednesday 12 April 2023 10
CRITICAL AREAS OF WATERPROOFINGCracks & Construction Joints
Reinforcement cloth
• Reinforcement cloth
• Surface cracks• Crack chasing• Crack filling with sealant• Priming with WPM 300• 1st Coat of WPM 002
Wednesday 12 April 2023 11
CRITICAL AREAS OF WATERPROOFINGCracks & Construction Joints
2nd coat of WPM 002
• 2nd coat of WPM 002
• Surface crack• Crack chasing• Crack filling with sealant• Priming with WPM 300• 1st Coat of WPM 002• Reinforcement cloth
Wednesday 12 April 2023 12
CRITICAL AREAS OF WATERPROOFINGRain Outlets/ Bore Packing
Core cutting
• Core cutting
Wednesday 12 April 2023 13
CRITICAL AREAS OF WATERPROOFINGRain Outlets/ Bore Packing
Cleaning
• Cleaning• Core Cutting
Wednesday 12 April 2023 14
CRITICAL AREAS OF WATERPROOFINGRain Outlets/ Bore Packing
Pipe Fixing
• Pipe fixing
• Core cutting• Cleaning
Wednesday 12 April 2023 15
CRITICAL AREAS OF WATERPROOFINGRain Outlets/ Bore Packing
Pipe fixing
• Pipe fixing
• Core cutting• Cleaning• Pipe fixing
Wednesday 12 April 2023 16
CRITICAL AREAS OF WATERPROOFINGRain Outlets/ Bore Packing
• Moisture barrier coat• Moisture raising in the surface
Wednesday 12 April 2023 29
CRITICAL AREAS OF WATERPROOFINGProtection of Waterproofing Treatment
• Waterproofing treated surface
Waterproofing Treated surface
Wednesday 12 April 2023 30
CRITICAL AREAS OF WATERPROOFINGProtection of Waterproofing Treatment
• Waterproofing treated surface
Damages to membrane
• Damages to treated surface
Wednesday 12 April 2023 31
CRITICAL AREAS OF WATERPROOFINGProtection of Waterproofing Treatment
Protection plastering
• Protection plastering
• Waterproofing treated surface
• Damages to treated surface
Wednesday 12 April 2023 32
WATERPROOFING SYSTEM
RECOMMENDATIONS
Concrete, Timber or F/C Substrate
WPM 300WPM 002
WET AREA (BATHROOM, TOILET, BALCONY) WATERPROOFINGWT1 - WPM 002 – Two component Acrylic Co polymer modified waterproofing System
WPM 002ADHESIVEAND TILING
WET AREA (BATHROOM, TOILET, BALCONY) WATERPROOFINGWT1 - 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
ROOFS & DECKS WATERPROOFING – PROTECTEDRP2 - WPM 002 – Two Component Acrylic Co Polymer Modified Waterproofing System
Concrete, Timber or F/C Substrate
WPM 300WPM 002WPM 002SCREED / TILING
ROOFS & DECKS WATERPROOFING – PROTECTEDRP2 - 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
