Garages · Toronto & GTA
Parking Garage Waterproofing
Joint Seal is a Toronto-based company specialising in patching, crack repair, expansion joint injection and ledge beam waterproofing. Our materials and repair methods let us inject expansion joints from the inside, avoiding costly podium roof excavation.
- Ramp & Floor Repair
- Expansion Joint Injection
- Ledge Beam Repair
- Concrete Patching
- Crack Repair
- Floor Epoxy
Complete Garage Repairs & Waterproofing
Parking garage repairs are a major part of high-rise waterproofing. We offer a full range of parking garage waterproofing services, including ramp and garage floor repair and coating (as well as floor levelling and mastic surface repair), expansion joint injection, ledge beam repair, concrete patching, and crack repair.
Our specialised industrial-strength materials have been tested to MTO standards to last 25 years — lasting repairs, guaranteed.
Why Parking Garages Leak
As cracks appear in concrete surfaces due to aging and weather conditions, water from the environment can make its way through walls or columns.
Podium roofs also start leaking when the waterproofing membrane fails and cracks form in the roof itself, with water coming through the expansion joints or through the cracks. The longer repairs are left, the more serious the issue becomes.
Expansion Joints & Ledge Beams
Our repair methods let us repair ceiling, wall, and floor expansion joints. We save on costs by waterproofing podium roof expansion joints from inside the parking garage — fully repairing the joint while filling any cracks in the podium roof membrane and in the concrete slabs around the injection.
To waterproof expansion joints located above ledge beams, we use guided rails to drill through the concrete beam. Injection ports must be installed properly to ensure efficient waterproofing.
Crack Repair, Patching & Flooring
We deliver efficient parking garage concrete waterproofing thanks to industrial-grade materials that allow extensive concrete crack repair. We install concrete patches as thin as 5 mm — minimal demolition, and garages are usually back in service within 24 hours.
Epoxy coating seals garage floors for lasting results and a glossy finish that doubles as traffic coating. Our self-levelling materials also let us repair mastic floor surfaces instead of replacing them.
Our Repair Methods
Parking Garage Waterproofing
Because we do most repairs from the inside — including podium roof expansion joints — and patch as thin as 5 mm with no forming, garages are usually back in service within 24 hours.
Garage Floor Epoxy
Epoxy coating offers a range of benefits, from a good-looking glossy finish to a durable surface that works perfectly as traffic coating.
For proper installation, concrete garage flooring must be completely dry and free of concrete sealer. If the floor is painted with polyurethane or latex paints, those must be removed to apply the garage floor epoxy coating properly.
Floor Mastic Repair
An aromatic (non-UV protection), self-levelling material is used to fill in any cracks in the mastic floor surface, as well as to install patches.
It has exceptional adhesive qualities that provide a durable bond with the repaired surface.
Expansion Joint Injection
We avoid costly excavation of podium roofs by working from the inside: we drill injection ports and inject our specialised liquid material, which turns into soft rubber.
It has tremendous adhesion power capable of binding cracked concrete and displacing accumulated water, not allowing it to re-enter. All cracks in the membrane adjacent to the injected area are sealed, preventing hydraulic pocket formation and leak recurrence — while the concrete slabs can still expand and contract normally.
When needed, expansion joints can also be injected from the positive side, from the top, following traditional repair methods.
Ledge Beam Repair
To reach the expansion joint above the ledge beam, it is necessary to drill through close to 40 centimetres of concrete. To ensure proper drilling, a guided rail is used.
It is essential to make precise calculations so that the drill port ends up between the concrete slabs at the top of the expansion joint opening.
Common questions
Frequently asked questions
How are leaks fixed in parking garages?
Wall and ceiling crack leaks are patched (usually without forming). Expansion-joint leaks — even behind ledge beams — are injected and waterproofed from inside the garage, avoiding podium roof excavation.
Do cars need to be moved during repairs?
Yes, to protect vehicles and give proper access. Most repaired areas are back in use within 24 hours.
Does the ground above an underground garage need to be excavated?
No. We inject expansion joints from inside the garage, so podium roof excavation is unnecessary.
Leaks in your parking garage?
We repair expansion joints, ledge beams, cracks and floors from inside the garage — with lasting, MTO-rated waterproofing and minimal downtime.