External Waterproofing
Weather on the outside. Nothing on the inside.
Protect external structures from water ingress and long-term structural damage.
Exposed structures need exposed-grade systems.
External surfaces face UV, thermal movement, ponding water and constant weather cycling. Master Seal specifies systems built for that exposure and installs them with the detailing that makes them work — falls, upturns, terminations and penetrations.
We handle both new construction and remedial projects, including balconies and terraces where tiles have been lifted, and podium or rooftop areas over occupied spaces.
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Our process
How the work is carried out.
Site Assessment
We inspect the structure, falls, drainage points and evidence of existing water ingress.
Preparation & Repairs
Surfaces are cleaned and prepared, and appropriate cracks and defects are repaired.
Detailing
Upturns, junctions, drains and penetrations are detailed and reinforced where required.
Membrane Application
The specified membrane system is applied and cured, ready for finishes or trafficking.
What we cover
Applications
- Balconies
- Terraces
- Rooftops
- Podiums
- Retaining Walls
- External Walls where applicable
- Concrete Areas
- Remedial Waterproofing
Benefits
- Protects structural elements from water ingress
- Suitable for occupied buildings and strata
- UV and weather-exposed systems
- Remedial and new construction
- Detailed terminations and penetrations
- 10-year warranty on qualifying work
Common questions
Good to know before you book.
Balcony, roof or podium leaking?
Send photos and we'll advise on the likely remedial approach.
