Balconies · Toronto & GTA
Balcony Waterproofing & Repair
Joint Seal is a Toronto-based company specialising in patching, crack repair, balcony slope reversal and decorative finishes. High-strength concrete adhesives let us do thin patch applications, making it possible to repair even balcony ceiling surfaces and edges.
- Concrete Patching
- Crack Repair
- Slope Reversal
- Decorative Finish
- Ceiling Repair
- Waterproofing
Balcony Surfaces Restored & Waterproofed
Even concrete balconies that are significantly damaged can be repaired thanks to our industrial-grade materials and repair methods.
We are a balcony repair company based in Toronto offering repairs without recasting concrete slabs, thanks to our specialised thin patch applications (recasting is done only when specified by engineers). Waterproofing balconies is one of our specialties.
Causes of Balcony Leakage
Cracks in the balcony surface and delaminated concrete are common causes of balcony leakage. A flat or inverted balcony slope, or leakage through the cold joint where the balcony slab meets the wall, are other reasons a unit can be affected by water damage.
Balcony floor and/or ceiling repair must be done to correct such issues.
Our Waterproofing Solutions
Our industrial-grade materials allow us to do extensive concrete balcony crack repair, which ensures lasting waterproofing and makes balcony restoration possible. We fix leaking balconies!
A specialised balcony coating is followed by non-slip aggregates and a layer of UV-resistant coating, which protects balcony flooring against weather elements and makes it safe to walk on — ensuring lasting concrete balcony waterproofing.
Our Repair Methods
Balcony Waterproofing
Every balcony is different. These are the core methods we use to restore concrete and stop water — thin-patch repairs, slope correction and a durable, walk-on protective finish.
Balcony Slope Reversal
Our industrial-grade materials, which allow for thin patch applications, make it possible to reverse inverted or flat balcony slope — restoring proper drainage and preventing water from leaking into the unit.
Concrete Crack Repair
Crack repair is the most cost-effective way to waterproof a concrete balcony and prevent future extensive repairs.
Our specialised materials make it possible to repair both single-defined and multiple cracks.
Concrete Patching
Under traditional repair methods, large parts of the balcony slab would require complete demolition and recasting.
The use of industrial-strength concrete adhesives and polymer cement permits thin patch applications, making the job much more cost-effective and faster.
Decorative Protective Finish
Once concrete balcony restoration is complete, protective coating is applied to ensure long-lasting balcony waterproofing.
It is a two-layer polyaspartic membrane application: after the base coat is applied, non-slip aggregates are broadcast, followed by a top coat which fully seals the surface.
Common questions
Frequently asked questions
Water is leaking into my apartment from the balcony — can that be fixed?
Yes. This usually happens when the balcony slope is flat or inverted. Because our materials allow thin patch applications, we can reverse the slope and stop the leaking.
Pieces of my balcony floor have fallen off — does the whole floor need redoing?
No. Using our industrial-strength adhesive we perform extensive patching and fully restore the balcony surface.
Can balcony cracks be repaired?
Yes. Our industrial-strength adhesive fuses old and new concrete, making lasting balcony crack repair possible.
Water leaking from your balcony?
We repair cracks, reverse slope and apply a durable polyaspartic finish — often without recasting the slab, for lasting, MTO-rated waterproofing.