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Interior Basement Waterproofing Toronto

Interior Waterproofing for Any Scenario!

Helping households prevent & repair basement water leaks since 2009. Ask our experts about how interior basement waterproofing can help your property.

Built to Last for Decades



What is Interior Basement Waterproofing?

Basement waterproofing approach designed to manage water that has already made it to your basement. In some cases, exterior basement waterproofing is just not feasible due to high cost, or other reasons like too small of a distance between your & your neighbor’s houses.


This is where interior waterproofing can help protect your property from basement leaks & water damage. It involves implementing various techniques and systems to manage water that may enter through the walls, floors, or foundation of a basement.


During heavy rainfalls, snow melts outside water will be pushing foundation walls, looking for a weak point to enter the basement.


That’s exactly where interior waterproofing comes in. It works by collecting the water that has already made it to your basement and redirecting it to the sump pump. Once the water reaches a certain level, the sump pump activates and pushes the water outside of your property.

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Can You Do it Yourself?

How Easy is it to Install an Interior Waterproofing System?

Despite being less complex compared to exterior waterproofing, it is still fairly hard for non-expert to accomplish.  A lot is at stake – will the waterproofing system properly collect the water, will the sump pump work etc.

Waterproofing is supposed to protect your property and give you peace of mind. That's why we recommend hiring professionals to take care of the internal waterproofing projects for you. Especially if you are planning to renovate the space. This will give you peace of mind that the work is done professionally and the chance of something going wrong is minimal.

Find Out What Your Project Could Look Like

Interior Waterproofing Gallery

Example of Interior Waterproofing Project

Interior Waterproofing May Include

What is Included in Interior Waterproofing Systems?

Every project is unique, there is no one-fits-all approach. However, here is an example of what an average interior waterproofing setup may include:


  1. Crack repair - cracks in the basement walls or floor can be potential entry points for water. Interior basement waterproofing may involve filling these cracks with sealants or epoxy injections to repair the cracks and prevent water seepage.

  2. Basement sealing – this is where contractors apply multiple layers of waterproofing materials to interior basement walls and floors. This process can involve waterproof coatings, sealants, or membranes to create a barrier against water intrusion. These materials help to prevent moisture from seeping through the porous surfaces and direct it to the sump pump.

  3. Interior drain tile system - this involves installing a drainage system along the perimeter of the basement floor. The system collects water that seeps through the walls or floor and directs it to a sump pump or a gravity drain.

  4. Sump pump installation - a sump pump is typically installed in a basement to collect and discharge water away from the foundation. It helps prevent water buildup and flooding by automatically pumping out water that accumulates in the sump pit.

  5. Dehumidification - moisture control is an important aspect of basement waterproofing. Installing a dehumidifier helps to reduce humidity levels in the basement, preventing the growth of mold and mildew and creating a more comfortable environment.


It's important to note that interior basement waterproofing focuses on managing water that has already entered the basement. If water issues stem from external sources, such as poor drainage, grading, or foundation cracks, it may be necessary to address those issues through exterior waterproofing methods to prevent water from reaching the basement in the first place.


Consult one of our experts on what your interior waterproofing project could look like!

Why Choose Us?

3,000+ Happy Clients Chose Aquamaster


True Warranty Coverage

Work, meterial and labour for 25 years. Fully transferable from owner to owner.

24-Hour Emergency

Our emergency team is available 24 hours a day.


Licensed & Insured

Aquamaster team is fully licensed & insured to work in plumbing, concrete, underpinning and waterproofing.



We offer all our clients 10% Off their first Aquamaster service. Get the offer today!

In Business Since 2009


We've been around for a while. We will be around for a lot longer!

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Proudly Serving South Ontario

Aquamaster team is proudly serving multiple locations in Toronto, GTA and multiple locations in Sothern Ontario.


Best Materials

We always choose high quality materials because we want to provide high quality service. 


Peace of Mind

Our service is well-thought through, so you don't have to worry about it!

Don't Take Our Word for It!

What Our Clients Say?


Stephanie G.

Residential Client

I used Aquamaster for two separate home waterproofing projects and I was extremely satasified with their work and price. Their team are highly skilled, thorough and were able to complete the 10.5 hour job in one day. They were even kind enough to seal my window frame after I noticed a minor leak. I would highly recommend Aquamaster for all your waterproofing and plumbing needs.

The Aquamaster team is absolutely fantastic! They went above and beyond to diagnose and correct the problem that I had with my basement plumbing caused by old pipes and persistent tree roots. I used them once in 2012 and in 2020. I cannot say enough good things about this team - Highly recommend.


Felicia F.

Residential Client


Chris D.

Residential Client

Aqua Master quoted me a very fair price for waterproofing and finshed the job ahead of schedule. We haven't had any water issues in our post-war hm since then. Highly recommend this business for its professionalism and quality of work. Hire with confidence!

How it Works?


Discovery Call

Connect with one of our certified experts, so we can advise on the best way to approach your project.


On-Site Survey

More complex projects require on-site surveys, where a certified Technician will provide a no-obligation estimate.



We sign a contract that outlines details of your project.



We do the work, you get peace of mind and a 25-year transferable warranty.

Get Started with 10% Off Today!

Unparalleled quality service, 25 years warranty, all available today with 10% off.

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