Toilets are typically offered in either 10 inch, 12 inch, or 14 inch rough-ins. The most important toilet dimension when buying a new toilet is the rough-in measurement, which is the distance between the center of the closet bolts and the wall behind the toilet. You need the following before the measurement: Another important toilet measurement is the distance from the wall to the bolts that hold the toilet to the floor. The general rule of thumb for clearance from the wall that faces the bowl is 24" and just about 15" on each side. To do so, you’ll need to take two measurements – distance from the plumbing to each side of the wall (not from the corner).eval(ez_write_tag([[300,250],'toilettravels_com-large-leaderboard-2','ezslot_4',146,'0','0'])); The measurement from each side of the wall should be the same. If there is a baseboard or a shoe molding, add the thickness of these to the measurement. Measure from the wall to the center of the bolt caps. In toilets, the rough in distance is the distance from the wall behind the toilet to the center of the toilet outlet pipe where the waste matter leaves during flushing. In simple terms, you want 15 inches minimum clearance around the bowl. Find the best by size below Now that you know what a rough in is, I can help you with getting the right measurement. Raise the toilet seat to get it out of the way. This is your toilet’s length. Re: How exact must a 12" toilet rough-in be? There are a few different ways you can measure and it depends on your situation. So for the next one to be closer to the wall am I looking for to fit to a 12" or 14" rough in? Toilets are available in various sizes to fit different rough ins, so having a toilet that fits your rough in is certainly possible and definitely imperative. Toilet rough in is the measurement from the wall of the bathroom to the bolt cap of the toilet. What exactly is a “rough in” and how do you measure a toilet rough in? In this case, you can measure from the center of your plumbing to the lines marked to show where the wall will be (without marks for the wall you won’t be able to measure the rough in). You’ve decided to get a new toilet. 2 Stretch the tape measure to the bolt cap on the base of the toilet. To measure your toilet’s rough-in, you can, of course, use a tape measure. If you’re prepared you’ll know the “rough in” measurement of your plumbing and it will help ensure you choose a toilet that fits! Measure the rough-in by checking the distance from the hold-down bolts to the back wall. Once you know the rough in for your home, making a toilet purchase will be a breeze. I’d say 80% of toilets have a 12” rough in so don’t be surprised if you do as well. Before you head out to the home store, arm yourself with a few measurements that you need when selecting a toilet. In this article, we’ll get to the bottom of it. Overall, a standard toilet will be between 27 and 30 inches deep, with a back height of 21 to 31 inches and a width of about 20 inches. You can’t take the measurement on top of the bowl because the tank is in the way. 1 Place the end of a tape measure against the wall behind the existing toilet, not on the molding at the base of the wall. But before you decide on a toilet, you’ll need to understand a little more about your plumbing. The rough in is a measurement that you need to ensure that your toilet fits snugly against the wall. Make sure to measure the distance from the wall (not the skirting board) to the center of the flange. Choose a toilet with a smaller measurement than your rough in and won’t fit against the wall. Now, if you’re measuring from stud walls, add in the thickness of your wall. Now that we've added tile to the wall it will not fit. Measure your rough in based on the distance from the wall to the center of the flange. It's really that simple! Usually, the distance is 12 inches, so a standard toilet will fit just fine in this space. Stack Exchange Network Stack Exchange network consists of 176 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Using a tape measure, check this distance to ascertain the type of toilet you can purchase. We feel that a 10" rough in toilet would solve the problem, but before we go out and buy a new toilet we want to be certain that the toilet we have isn't a 10". Copyright 2019 | Toilet Travels is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Step 1 – Measure Wall to Toilet Distance. Join me and let’s explore the fascinating world of toilets! In order to know how much space is available, you need to determine the rough opening. 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