Pro-Flo Plumbing & Drain Cleaning

Smoke Testing (Leak Detection) in Danville, VA

Drain and sewer leaks can allow unpleasant odors into a building, release wastewater, or let rain and groundwater enter the drainage system. Some of these openings are difficult to find through a visual inspection alone. Pro-Flo Plumbing provides smoke testing in Danville, VA, to locate hidden defects in drain, waste, vent, and sewer piping. During the test, specially produced smoke is pushed through an isolated section of the system. The smoke follows the same pathways that sewer gas could travel and becomes visible wherever there is an opening.

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Plumbing Problems Revealed by Smoke

Smoke testing can help locate cracked drain or vent pipes, loose fittings, missing cleanout caps, failed seals, and improperly connected plumbing. It may also reveal dry or missing traps that allow sewer odors to enter the building.

Other discoveries can include damaged sewer laterals, improper stormwater connections, leaking roof vents, and openings around toilets or other fixtures. Smoke exiting through a correctly installed roof vent is normal. Smoke entering occupied areas or escaping through the ground may indicate a defect requiring further evaluation.

Smoke Testing and Camera Inspections

A sewer camera travels through the pipe and shows buildup, roots, corrosion, separated joints, bellies, and collapsed sections. However, the camera only shows what is visible from inside the line and may not reveal every small opening or faulty vent connection.

Smoke testing identifies where air escapes from the system. The two methods are often more effective together: the smoke narrows down an opening, while the camera helps assess the internal condition of accessible piping.

The Testing Appointment

Before testing, water should be added to infrequently used sinks, tubs, showers, and floor drains to fill their traps. Homeowners should also mention respiratory sensitivities before the appointment.

The technician identifies the section being tested, introduces non-toxic, non-staining smoke, and observes roof vents, fixtures, walls, floors, and exterior areas for escape points. Any defects are documented, and the findings are used to recommend targeted repairs.

A small amount of smoke entering the building can usually be cleared by opening doors and windows. It is also an important warning: an opening that admits test smoke may allow sewer gas to enter under normal conditions.

Real reviews

Danville Neighbors on Our Smoke Testing

Sample reviews shown
Nashzee Watkins profile picture
Nashzee Watkins
4 weeks ago
Pablo Anthony profile picture
Pablo Anthony
4 weeks ago
It was after hours on a weekend and I was helped within 2 hours or so. THANK YOU!
Matt quickly found the problem and was able to correct it quickly.
Verna Martin profile picture
Verna Martin
1 month ago
Williams and his guys did an awesome job on my bathroom renovation. Recommend 100%
My brother’s apartment was flooding from a very old and non maintenance water heater. The property manager was not capable of getting a plumber there for an emergency that happened around midnight. Marybeth at Pro-Flo Plumbing was able get someone out there in a timely fashion. I’m grateful that they were able to remove the most of water shut off the water.
Karen Jarrett profile picture
Karen Jarrett
1 month ago
Only Business profile picture
Only Business
2 months ago
Very friendly and helpful!
Ronnie Brown profile picture
Ronnie Brown
2 months ago
These gentlemen were pleasant, fair, prompt and very reasonable. Good people
Great service and great price!!! Didnt take them but 15 or 20 mins to fix my leak under my sink! Thanks ..
Tammy Moore profile picture
Tammy Moore
3 months ago
I recommend anyone use your services you did a great job and the technician was very professional and carrying out his job clean up the whole nine yards done a great job I will be using you again in the future if needed
Sheena Rosario profile picture
Sheena Rosario
3 months ago
My son noticed we had no water. I called around 12 by 2 the plumber was at the house. He figured out what was the problem in about 20-30 min. Gave me a quote and completed the work. By 4 o’clock he was done. Awesome company
Tulips profile picture
Tulips
3 months ago
I am super late getting this review submitted. Purchased a home in February 2026 and needed a plumber asap for my basement. Called and received a timely response from the scheduler. Work was done on 2/23/26-Robert was professional and super helpful with explaining the process. They will be my go to for future needs.. Thank you, thank you for all you do.
Bridgette
james mclaughlin profile picture
james mclaughlin
4 months ago
Pro Flo plumbing fixed two issues in our home that we had been putting off. The price was fair, our plumbers were outstanding and both jobs were done right.
Pro Flo also has now helped the nonprofit animal shelter my wife and I work with (APS Caswell) twice and did a great job for the shelter as well. When you go with Pro Flow, you can count on knowledgeable professionals explaining everything thoroughly, and getting the job done right for a reasonable price. I know my family are Pro Flo customers for life.
Ray Wilson profile picture
Ray Wilson
5 months ago
Matt and his helper did a great job very clean and professional 👏 I had 2 holes in my cast iron p-trap coming from my washing machine and old broke down cast iron joints as you can see they re did it all and it's awesome no more worries for me thank you pro flow 😀
Brandy Wilson profile picture
Brandy Wilson
6 months ago
Paid this company for nothing! Told them the issue (disconnected pipe and clogged) the man claimed he climbed under the house and seen no issue then charged me a service fee but he didn’t do anything and I had to call another company out and they had the problem fixed within an hour and a new pipe connected.
Lori Lee profile picture
Lori Lee
6 months ago
We appreciate Pro-Flo Plumbing coming out and installing our water fountain for us today. We definitely recommend this business- we will be using their services again.

Related Services

01 Septic Inspection

Real-estate closings and peace-of-mind checks.

02 Emergency Plumbing Services

Burst pipes, no water, sewage backups in Reidsville and Eden, any hour.

03 Sewer Camera Inspection

See exactly what’s in your line before spending a dollar on digging.

Find Hidden Plumbing Defects

Call Pro-Flo Plumbing today to schedule smoke testing and leak detection in Danville, VA.
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