10” vs 12” Toilet Rough-In: Why Measuring Before Buying Matters

Replacing a toilet seems simple, but there’s one measurement many homeowners forget to check first: the toilet rough-in distance.

Most toilets use a 12-inch rough-in, which is the distance from the finished wall to the center of the toilet drain. However, some homes have 10-inch rough-ins, and buying the wrong size toilet can cause installation problems.

Before heading to the store, it’s always a good idea to take a quick measurement.