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Backwater Valve & Sump Pump


When it comes to waterproofing your home, especially when talking about interior waterproofing, a sump pump and backwater valve are absolute must-have technologies to not only re-direct water away from the foundation of your home, but also avoid the nasty situation in the event of a major storm when sewer waste backs up through the pipes of your home.

Remember, we live in an age where municipal infrastructure has become dated, and is easily overwhelmed during the heavier rain storms we are seeing more and more now. Don’t leave things to chance.




There are three main features to a sump pump – a tank that holds water that is drained from the weeping tile of the home (a porous pipe around the foundation of the home used for underground water collection and discharge); a pump that pushes the water collected out to an exterior location, like a municipal storm drain; and a battery back-up system and alarm.

Notice more humidity in your basement – to the point where you need to buy a de-humidifier? That might be because of water build-up. And water tables rise with an excess of rainfall or melting snow – common features of the Canadian climate. Or, water leaking through the foundation of the home into the basement – another reason to have a sump pump installed.

Talk to a Canada Waterproofers Clarington technician during an onsite assessment of the waterproofing level of your home.


The older method of draining a weeping tile was to connect it to the home’s drainage system. But as we have said that system is older, wearing down, and is becoming more overwhelmed as weather systems change, and we see more, and heavier, rainfall.

A sump pump is usually installed so that the weeping tile system that surrounds the perimeter of the house has a place to drain (weeping tile is also called a drainage tile, pushing underground water away from your home).

When a sump pump is installed the old weeping tile connection to the city sewer is disconnected. That will help avoid flooding in your home.

The sump pump is installed inside the basement along the wall – as long as there is a place to discharge the water (so the water doesn’t flow back into the house). The crews at Canada Waterproofers Clarington will excavate, remove and dispose of the soil, and install a water tank (also called a sump liner).

Next step is to set up a connection from the existing weeping tile (or the new weeping tile, if installed) to the side of the tank.

Our technicians will then encase the tank with gravel (3/4” clear), re-cement around the tank, install a submersible pump, then test the system (discharge water to the exterior). If all checks out and meets our high standards, we’ll put a lid on the tank, bolt it down, and you are good to go.


Always a good thing to consider, in case there is a major storm and the power gets knocked out. The battery back-up system –  a separate pump that runs off a marine battery – will run on its own for 24 hours. That’s a long stretch without power, but at least in this scenario you have a sump pump that’s still pumping water away from your basement foundation.

We also offer a back-up system that runs from the water supply to your home – the water runs the pump turbine, pumping water away from your basement. This is a pump we like to recommend to people, since it will run forever, as long as you have that water supply.

You will need a minimum ¾” water supply line from the city coming in your house in order for the pump to work correctly. Talk to a Canada Waterproofers Clarington technician for more information on these back-up systems.


The nightmare scenario every home owner envisions is a major storm followed by a sewer back-up of waste and sewage into your toilet and sinks via the home’s drainage pipes.

A backwater valve is a device that prevents outbound water from the home to re-enter through the home’s drain pipes. A crew from Canada Waterproofers Clarington will conduct a camera inspection of the sewer to determine the ideal location for the valve. Once we install the valve waste will flow freely from the home to the city main. But the most important feature – if the skies open up and the sewers back up the valve will close automatically – preventing flooding from the city main sewer.

Give us a call. The professionals at Canada Waterproofers Clarington have the expertise to install backwater valves. We can give you a free, no-obligation assessment of your home and a quote.


This just takes a day. A  crew from Canada Waterproofers Clarington will excavate where the sewage connection leaves the house (normally in the front of the house), inside or outside the foundation wall. The building code stipulates that the valve has to be within a maximum of three feet from the front wall and you cannot have a Y Pipe connected within three feet behind the valve, or you risk having the sewage back up into the house.

Install the city-approved BWV with down-stream, clean-out access in the front of the valve. Have the valve inspected by the city. The Canada Waterproofers Clarington crew will support the pipework with gravel and then back-fill and compact the ground, followed by inside concrete finish and outside gravel finish. Clean-up is the last step.

Keep in mind – when installing any new fixture a permit from the city is required. Ask us about it.

Check out our drain section to read more about backwater valves and how important they are for flood protection.

A flooded basement is extremely stressful and traumatic. It causes a massive upheaval in one’s life. Don’t put your home at risk. If you waterproof your basement in large part by using technology like sump pumps and backwater valves, then you’ll never have to go through it.

The peace of mind a waterproofing solution provides you far outweighs the cost of having it done.

Give us a call for a free assessment of your home. It all starts with a conversation.

Thank you,

Canada Waterproofers Clarington team

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