Q&A: Toilet Rough In

Question: I purchased a toilet recently and the seller asked what is the rough-in of my bathroom, I don't know that. What is a toilet rough-in? How do you measure it?

Answer: Toilet rough-in is the space between the finished wall up to the center of the drain or the waste pipe. The standard toilet rough-in dimensions are 12 inches but there are also rough-ins measured between 10inches to 14inches. We suggest that before you purchase your toilet you should measure your rough-in so that you are sure that the toilet will fit your bathroom. You may refer to the photos below on how to measure your rough-in.

Fig A. If you have an existing toilet installed, it should be on the center bolts that hold your toilet down.

Fig B. from the finished wall up to the center of the drain pipe/drain.