Standard Toilet Drain Size

Cold water only pipe creates one hole between 5 and 10 inches above the floor supply line horizontal.

Standard toilet drain size.

Check toilet to confirm location water supply connection. But most residential floor mount toilets require one foot 305 mm drain placement from the back wall. Ideally 8 1 4 inches above the floor. 12 inches is the most common toilet rough in size.

Toilet rough in. This information can be found on the toilet s specification sheet. Measured from centerline running vertically through the center of the toilet supply line hole should be 6 inches to the side of centerline. The wider the pipe the more waste it can move and the.

Waste drain pipes for toilets in modern plumbing systems are either 3 inches or 4 inches in diameter. Standard toilet sewer pipe sizes. In most homes pvc drain pipe is used instead of metal pipe. If your home has one or two toilets the standard toilet sewer pipe size is 3 inches.

10 and 14 are also possible and you ll have a smaller selection of toilets that fit those sizes. It s important to know that this measurement is for standard toilets with a 12 rough in. What size are toilet waste drains. Toilet rough in details.

I d say 80 of toilets have a 12 rough in so don t be surprised if you do as well. The most important of these measurements is the distance between the floor drain and the wall called the rough in. Standard toilet rough in common rough in sizes the standard toilet rough in is 12. Local codes may call for a 4 inch main drain and some plumbers prefer to run larger vent pipes.

However it s useful to know that toilet s also come in. Always check local plumbing codes before you begin a plumbing project. The standard size for a toilet drain pipe is 3 inches in diameter but drains up to 4 inches in diameter are often used. The standard rough in dimensions for toilets is 12 inches but a distance of 10 or 14 inches is occasionally found in small bathrooms or older homes.

There are however other rough in sizes. The drain pipe connects to the flange which mounts the toilet itself and this flange is usually built to connect to 3 inch schedule 40 toilet drain pipe.