Why Core Seal?

Core Seal are experts in providing fast, efficient, and effective engineered reinstatement and repairs to structural slab and concrete wall openings with minimal disruption and downtime.

Innovative Solutions

We pride ourselves on providing specific Innovative Solutions to various site conditions and access challenges.

Custom Applications

We customize opening infill solutions to suit specific and unique site conditions whether the repair or infill is completed on concrete slabs or walls.

Safety is a Priority

We have a safety culture, not just a safety program. Everyone at Core Seal contributes to promoting
health, wellbeing, and safety.

Specialized repairs and services

Should your project have a challenging or specialized repair, Core Seal are here to work with you to solve your infill needs. We will work with the project team and/or design professionals to provide a cost-effective work plan and construction solution.

When you have an opening that needs to be sealed whether to reinstate the fire rating, create a safe walking environment, replace a poorly installed patch or have services being relocated or removed, Core Seal is your partner of choice.



Whenever I have a concrete opening to reinstate, I call Core Seal. At our Sureway Gardens project, we had hundreds if not more than one thousand core holes to fill. Our normal labor-intensive method of using a lift on the underside of the slab, installing rebar, mounting material to contain the concrete, then filling the hole, and eventually stripping the no longer needed material is time-consuming and cost-intensive. Core Seal’s innovative single-sided system gets the job done from the top of the slab without the need of expensive equipment in far less time. Core Seal, when asked, has provided Ellis Don with quick, professional and cost-effective service.

“We have used this product and service on several job sites. We typically use Core Seal over sensitive space below (restricted areas) or difficult and challenging ceiling spaces with limiting access. In all cases, we have been successful through the entire process, and least invasive, much to the satisfaction of our clients at Rogers Arena Vancouver and Holt Renfrew project. I will continue to call on Core Seal for concrete re-instatement projects.”

Rick Hurst

When Modern Niagara needs to reinstated concrete floors, we call Core Seal. I used Core Seal at a University of Toronto, Mississauga campus project and Core Seal performed excellently. Their service was hassle-free and provide no service interruptions to the on-going building use.

Amer Warde

Message Us

Get in touch below for general queries or to request further information.


Open Hours