Backwater Valve - Keeping You Protected. With homeowners in Canada using their basements for much more than storage, it is more important than ever to protect the extended living space from moisture and water infiltration. A key component to making sure your basement stays dry is to install a backwater valve. The work is quite extensive and will require a waterproofing professional. Royal Work Corp. has technicians trained in the proper installation and maintenance of backwater valves and are ready to help.
What is a Backwater Valve?
A backwater valve or backflow preventer is installed below your basement floor on the main lateral drain line to prevent sewage or storm water from backing up in plumbing fixtures or drains. It senses a reverse flow and completely closes a gate to stop it from backing up.
What Does It Look Like?
Typical backwater valves are made of 4" ABS plastic pipe with openings on either end for inlet and outlet of water/waste, a gate with floatation devices on either side, and a clear top with opening for visual inspection.
Every Home Needs One
A backwater valve is the last line of defense from allowing water to enter your home if your sewers are backing up. Every home drainage system is different, so it is important to discuss your plans for changing your current system. Once you've decided to proceed with installation of a backwater valve, our technician will break through the basement concrete floor and dig down to the sewer lateral. This is the pipe that sinks, tubs and toilet waste water flows through to the sewer. A short piece of lateral is cut out, the backwater valve is then lowered and secured. It will be necessary to disconnect the weeping tile from the sanitary sewer and possibly install a sump pit and pump. New concrete is poured to fill in the basement floor.
The valve is designed to close if water ever starts to back up. There are two floatation devices on either side of a gate that will push it closed to prevent sewer water from re-entering the home. When the water pressure is released, the gate will drop back down flat and water will smoothly flow out again. The clear top on the valve allows regular checks to make sure it isn't clogged. The top should be tightly secured and regular inspection by a plumber is also recommended.
Another area of concern may come from gutter downspouts that are connected to your sewer lateral. Disconnecting and extending them two metres away from the foundation will help prevent excess water from backing up during rainstorms.
Government Assistance is Available
While there is significant work and expense required to install a backwater valve, the risk of a basement flood and sewer back-up will be greatly reduced. The City of Toronto, Halton Region and Peel Region all offer subsidy programs to help offset the expense. Below are some details related to eligibility:
The Halton Region, including the cities of Burlington, Oakville and Milton, is providing a one-time subsidy to homeowners for flood prevention measures totaling a maximum of $2,725. Reimbursement for materials, labour, permit and taxes for the installation of a backwater valve and disconnecting downspouts and weeping tiles from the sanitary sewer.
Refer to City websites for application forms and more specific eligibility requirements.
Proper sewer main air flow is needed for problem-free drainage throughout the city. The installation of an individual backwater valve allows for maintenance of the entire system without disturbing home drainage. Contact Royal Work Corp. today to prevent future basement flooding and help your municipality maintain a healthy system.