SMART INSPECTOR SCIENCE
VINYL FLOOR STAINS AROUND A TOILET VINYL FLOOR STAINS AROUND A TOILET ARE ALWAYS AN ISSUE FOR A HOME INSPECTOR TO WORRY ABOUT, RIGHT? HOW SHOULD WE EXAMINE AND REPORT THESE STAINS? ARE THEY REALLY A SERIOUS DEFECT? STAINS IN A VINYL FLOOR
Gray-colored stains in vinyl flooring are often caused by moisture underneath the floor (Photo 1). This type of stain will always feel dry. The stain often looks like it’s on the surface, but rubbing the stain with a rag and detergent won’t remove what’s actually beneath the surface of the vinyl.
Photo 1. Stain Feels Dry.
Illustration P027C Toilet Leak at Floor.
STAINS NEAR A TOILET ARE CAUSED BY A LEAK…
The vinyl stains found around a toilet indicate a drain leak (Illustration). In a properly mounted toilet, a flange seals the unit to the drain pipe at floor level. This flange—a circular piece of PVC, rubber or metal—is usually secured in place with a few bolts. But if the toilet is not securely fastened to the floor and can tip from side to side, this causes the seal to fail. With each flush of the toilet, water leaks out.
…BUT IS IT AN ACTIVE LEAK?
Using a moisture meter can help you determine whether the floor or the subfloor is wet (Photo 2). In this case, the stain tests dry, so maybe the toilet had moved and was re-set with a new wax ring and then secured to the flange. In another instance, the moisture meter indicates the floor is “at risk,” meaning it is wet (Photo 3). There’s an active leak here. Looking at the subfloor below the toilet confirms that there is water damage (Photo 4). Keep in mind, though, that this damage is not always visible during your inspection. 18
ASHI Reporter • SEPTEMBER 2020
Photo 2. Vinyl Stain Tests Dry.
Photo 3. Stain Tests Wet.
