MANHOLE RESTORATION & WATERPROOFING
Joint Seal is a Toronto-based company specialised in concrete repair, restoration, and riser joint injection. Industrial-strength concrete adhesives allow us to perform all concrete repairs from inside the maintenance chamber, ensuring long-lasting results.
Manhole Waterproofing & Rehabilitation
We offer complete manhole restoration by injecting riser joints, repairing cracks, as well as patching, parging and coating the concrete surface with a chemical-resistant membrane, which ensures lasting waterproofing results.
Why Manholes Leak
Tree roots and incrustation are some of the causes of manhole leakage. Cracks and delaminated concrete are another cause – water from the surrounding environment can infiltrate, which overloads sewer capacity.
To ensure complete manhole rehabilitation, several steps may need to be taken.
Root & Incrustation Removal
We remove any type of incrustation, and repair the damaged manhole walls by following our specialized crack repair and patching methods.
Manhole Waterproofing & Restoration
Complete restoration and waterproofing are achieved through crack repair, patching, and riser joint injection.
Step / Ladder Replacement
Steps or ladders are replaced, as required.
We are able to cover up manholes, if requested, because our specialized materials make adhesion between concrete and metal possible.
Eliminate Infiltration & Leaks
Water infiltrating from the environment into a manhole puts an additional strain on sewage capacity. By sealing riser joints and cracks, we eliminate this issue. We inject riser joints between pre-cast and cast-in-place manhole structures, and repair cracks to eliminate leaking.
We use a less intrusive repair method that does not require excavation, which minimises restoration costs. Our specialised industrial-strength materials have been rated to the MTO standards to last for 25 years, which ensures long-lasting waterproofing.
Concrete surface is completely restored thanks to the monolithic adhesion provided by our materials.
Riser joints are a weaker area in a concrete surface where leaking can occur.
We inject them to stop leakage and provide long-lasting waterproofing.
Crack Repair & Patching
Cracks are repaired with specialised materials that ensure durable manhole repair and waterproofing.
We can reprofile manhole benching.
Where necessary, patches as thin as 5 mm are applied, which is possible thanks to the use of our industrial-grade adhesives and polymer cement.
Parging & Coating
Once the manhole walls are patched, their surface is parged and coated with a chemical-resistant membrane, which ensures long-lasting concrete waterproofing.
A Leaking Manhole
Q: Is it a problem if a manhole is leaking?
A: Yes, it is because this extra water could overload sewer capacity, since sewers are designed to carry a specific quantity of sewage.
Sewer Exceeding Capacity
Q: What will happen if a sewer exceeds capacity?
A: It can result in overflows/spills and increased treatment costs.
Manhole Repair or Replacement?
Q: Can a leaking manhole be fixed, or does it have to be replaced?
A: Manholes can be repaired. We use industrial-strength materials and chemical-resistant membranes which ensure durable waterproofing.