Leak investigation
Review patterns, weather history, drawings, transitions, drainage, previous repairs, and concealed paths before defining openings or tests.
24/7 emergency response across Toronto + the GTACall (647) 494-5505
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Specialty construction Investigation / detailing / protection
Building Waterproofing
Waterproofing repairs and renewal for roofs, plazas, balconies, foundations, joints, and penetrations—planned around how water actually moves.
Built around performance Details that matter
The finish is only as strong as the planning behind it.
Water does not always appear where it enters. It can travel along membranes, slabs, framing, insulation, conduits, and joints before becoming visible inside. Effective waterproofing begins with the assembly, drainage path, transitions, and history of the leak.
Moderno coordinates investigation, openings, temporary controls, consultant or manufacturer input, substrate repairs, membranes, flashings, sealants, drainage, protection layers, testing, and finish reinstatement. The aim is to correct the route of entry rather than only the symptom.
Applications Where we can help
Planned for real properties and real operating conditions.
- 01
Flat roofs, terraces, and podiums
- 02
Balconies and occupied spaces below
- 03
Plaza decks, planters, and landscaped assemblies
- 04
Foundations and below-grade walls
- 05
Expansion joints, penetrations, flashings, and transitions
- 06
Localized leak investigation and emergency temporary protection
Our scope Coordinated delivery
One team across the critical interfaces.
Membrane work
Coordinate compatible sheet, liquid-applied, hot-rubberized, cementitious, or other systems selected for the assembly and exposure.
Details + drainage
Resolve flashings, upturns, drains, scuppers, joints, corners, penetrations, terminations, protection, and water-shedding surfaces.
Reinstatement
Restore pavers, concrete, landscaping, insulation, finishes, or other overburden after testing and review requirements are satisfied.
Our process Clear from the start
Decisions resolved before they become site problems.
- 01
Trace
Gather evidence, review assemblies, map symptoms, and coordinate exploratory openings or testing where useful.
- 02
Detail
Define repair limits, transitions, compatible materials, drainage, protection, access, phasing, and verification criteria.
- 03
Install
Prepare substrates, complete repairs and membrane details, protect open work, and document concealed conditions.
- 04
Verify + restore
Complete specified inspection or testing, correct deficiencies, and reinstate overburden and adjacent finishes.
Technical considerations No hidden handoffs
What we resolve with the project team.
- 01
Drainage slopes, membrane continuity, joints, penetrations, flashings, terminations, and concealed water paths
- 02
Substrate condition, moisture, compatibility, primer, temperature, cure time, weather, and protection
- 03
Access, occupied areas below, temporary water control, testing, overburden, and future maintenance
Frequently asked Practical answers
What property teams want to know.
Why can a leak appear far from the point of entry?
Water can travel along membranes, slabs, framing, insulation, pipes, and other concealed paths before reaching an interior opening. Investigation needs to consider the entire assembly and drainage route.
Can waterproofing be repaired locally?
Sometimes, if the defect and surrounding materials can be reliably identified and tied into a compatible, sound existing system. Widespread ageing or uncertain continuity may make broader renewal more dependable.
How is a waterproofing repair verified?
Verification depends on the assembly and specification. It may include visual review, manufacturer or consultant inspection, flood testing, electronic testing, controlled spray testing, or monitoring after weather events.
Have a property improvement in mind?