Sewer smoke testing or vapor testing is often performed to locate leaks, sources of sewer odors, and entry points for insects and rodents in homes and buildings. A smoke test often accompanies a video inspection to provide a thorough diagnosis of sanitary drainage, storm drainage, or commercial greasy waste drainage systems.

What Does Sewer Smoke Testing Involve?

A non-toxic smoke, or vapor, will be blown into the sewer, storm, or grease system via an access point such as a roof vent stack opening or a cleanout. The smoke will then travel throughout the pipes, pressurizing the drainage system, and manifest itself at or near the source of leaks.

Benefits of Sewer Smoke Testing

Smoke testingĀ is a simple and quick way to avoid having to open walls in search of the sources of toxic sewer gases/odors, insects, rodents, or water damage. Guesswork is eliminated since a visible element is added to the odor source.

Having the smoke test performed may save you from undertaking unnecessary repairs in an attempt to address the issues listed above. Sewer odors do not always indicate a major deficiency in the sewer pipes. The smoke test results may point to a solution as simple as replacing a wax ring on a toilet or replacing a p-trap under a sink.

Areas Where Smoke/Vapor May Appear During Testing

During the test, the non-toxic smoke/vapor may appear in several locations. When there is a leak present, the smoke will first fill the void behind a wall or in the ceiling and then appear through the nearest wall or ceiling penetration. Some of the locations that smoke may appear include:

  • Electrical Outlets – Usually indicates a leak in adjacent pipes behind the wall.
  • Light Fixtures – Usually indicates a leak in pipes in the ceiling.
  • Wall Penetration Under Sinks – May indicate defective trap or leak in an adjacent vertical stack.
  • Urinals – May detect deteriorated gaskets and defective traps.
  • Base of Toilets – May detect deteriorated wax rings and defective traps.
Sewer Smoke Testing Contractor Detects Odor Coming From Indoor Cleanout

Sewer smoke testing is a quick and easy way to pinpoint the source of the sewer gas leak.

Sewer Smoke Testing Contractor Detecting Sewer Odor From Urinal

During a smoke test, smoke/vapor may come from unlikely places, which may mean an easier fix.

Visible smoke usually indicates a leak in the adjacent sewer pipes, such as a bathroom stack, kitchen stack, or overhead pipe. The professional performing the test should have an idea as to where the source of the leak is located at the first sight of smoke.

Once the general area of the leak has been identified, the professional performing the test may in some cases require further investigation by means of a small inspection camera which is inserted behind the wall via light fixture openings, outlets, etc.

Sewer Smoke Testing Contractor, FL

Here at PTI we have 35 Years of experience as Certified Plumbing Contractors in the State of Florida. If you are within our service area and are interested in having an inspection done of your sanitary drainage, storm drainage, or commercial greasy waste drainage system, we would be happy to help.

Get In Touch!

Need an Inspection?

Would you like to schedule a comprehensive sewer inspection for your home or building? If so, contact us for a free estimate for an inspection. We look forward to working with you!
Get In Touch!