System Design Service
Roof Waterproofing PU System
Complete polyurethane waterproofing solution for flat roofs, terraces, and roof decks using DURABLOCK PU system. Professional-grade materials and application methods ensure long-term protection against water ingress.
Key Features
Excellent Adhesion
Strong bond to various substrates including concrete, metal, and existing membranes
UV Resistant
Withstands prolonged exposure to sunlight and weather conditions
Seamless Application
Forms continuous, seamless membrane without joints or weak points
System Steps
1
Surface Preparation
Prepare the roof substrate for waterproofing application
Key Activities:
Clean surface thoroughly - remove all dirt, debris, and loose materials
Repair any cracks, holes, or damaged areas
Ensure surface is dry and free from moisture
Check for proper slope and drainage
Prime surface if required for better adhesion
2
Primer Application
Apply primer to ensure proper adhesion of the PU membrane
Recommended Product: DURABLOCK PU Primer
Key Activities:
Apply primer evenly across the entire surface
Allow primer to cure according to manufacturer specifications
Ensure uniform coverage for optimal bonding
Check for any missed areas before proceeding
3
DURABLOCK PU Membrane Application
Apply polyurethane waterproofing membrane
Recommended Product: DURABLOCK PU
Key Activities:
Mix DURABLOCK PU components according to specifications
Apply first coat evenly using appropriate tools
Allow first coat to cure before applying second coat
Apply second coat perpendicular to first coat for complete coverage
Ensure proper thickness (typically 2-3mm total)
Pay special attention to edges, corners, and penetrations
4
Detailing & Joint Treatment
Apply specialized detailing for joints, edges, and penetrations
Key Activities:
Treat expansion joints with appropriate sealants
Apply reinforcement at corners and edges
Seal around penetrations (pipes, vents, etc.)
Install edge trims and termination bars where required
Ensure all transitions are properly sealed
5
Protection & Finishing
Apply protective layer and finish the system
Key Activities:
Apply protective coating or screed if required
Install drainage systems if needed
Conduct water test to verify waterproofing integrity
Document application for warranty purposes
Typical Substrates
Concrete slabs
Cement screeds
Metal decks
Wood substrates (with proper preparation)
Existing waterproofing membranes (for repairs)
Typical Consumption
Primer
0.2-0.3 kg/m²
Single coat application
DURABLOCK PU Membrane
2.5-3.5 kg/m²
Two coats, 2-3mm total thickness
Detailing Materials
As required
Joints, edges, penetrations
Related Products
Waterproofing Systems
DURABLOCK PU
Polyurethane waterproofing membrane for roofs
Waterproofing Accessories
DURABAND
Waterproofing tape for joints and details
Sealants
DURASWELL
Expansion joint sealant
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