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how do you measure a bathtub drain

by Mr. Werner Miller Sr. Published 3 years ago Updated 3 years ago

How to Measure for a Bathtub Drain.

  • Step 1: Measure Drain Hole Diameter. Measure the drain hole in the bathtub with a tape measure and write that measurement down. This will be the width ...
  • Step 2: Remove Plumbing Access Panel.
  • Step 3: Remove and Measure Drain Pipe.
  • Step 4: Measure Vertical and Horizontal Distance.
  • Step 5: Connect New Bathtub Drain.

Measure straight down from the center of the overflow to the point at which the drain is mounted to the tub: depending on what's easiest to get to, you can measure from outside the tub down to its underside, or from inside the tub to the tub floor. Do not follow the curve of the tub; measure straight down.

Full Answer

What are the dimensions of a bathtub drain?

Standard Tub Drain Rough-In

  • Locating the Drain Line. Installing a tub drain in a bathroom with an existing finished floor will require you to cut a hole in the floor to accommodate the drain ...
  • Plumbing Rough-In. You'll rough in the tub drain with 1 1/2-inch pipe with male threads that extend 1/2-inch above the level of the floor.
  • Slope. ...
  • Venting. ...

Are there different size tub drains?

Shower or tub drains have different drain connection sizes to accommodate the pipe sizes of your plumbing drain system. A shower tub drain has a 2” drain connection, while a tub drain often has a 1 ½” drain connection. The drain connection for your tub is similar to the one for your sink, whereas the shower drain connection is slightly larger.

Why will my bathtub not drain?

These are most commonly caused by a combination of:

  • Soap residue
  • Hair
  • Cleaning products
  • Dirt or sand
  • Shaving cream or gel
  • Shampoo and conditioner suds

Are bathtub drains different sizes?

When it comes to the plumbing, however, there aren't many choices to be made, thanks to standard industry sizes. According to Bonnets Stems and Accessories, Inc ., a standard modern bathtub drain is 1 1/2 inches in diameter – the width straight across the middle.

How do I know what size my bathtub drain is?

The diameter of the drain is measured by taking the size of the opening at its widest point. From one edge of the hole to the other is a length of 1.5 inches.Dec 23, 2021

What are the rough in measurements for a bathtub drain?

Bathtub Drain Measurements

The drain hole should be a minimum of 12 inches away from the wall and 9 inches in scope. To rough in the drain, use a 1.5-inch pipe.
Oct 6, 2021

How much pitch does a tub drain need?

¼ per foot
A bath tub drain shall be a minimum of 2 (horizontal) or 1 ½ (vertical) drain pipe size, with a minimum 1 1/2 vent pipe size. A lavatory requires a 1 ¼ minimum drain and vent pipe size. The minimum slope required for drainage piping less than 4 in pipe size is ¼ per foot slope.

How far should the bathtub drain be from the wall?

12 inches
You will need to cut a hole in the floor at the drain end of the tub to position the tub drain and install it. The hole should be at least 9 inches wide and 12 inches from the wall.

How many measurements do I need for a new tub overflow?

Measuring for a new drain/overflow kit is fairly simple - you'll only need 2-3 measurements to start shopping. And since most kits are sized to fit a range of tub sizes, finding a compatible assembly is made that much easier. If you're unfamiliar with the drain/overflow assembly or its terminology, the diagram to the right.

How to measure overflow depth?

Overflow Depth: Measure straight down from the center of the overflow to the point at which the drain is mounted to the tub: depending on what's easiest to get to, you can measure from outside the tub down to its underside, or from inside the tub to the tub floor.

What is the overflow plate on a tub?

Every tub has drainage tubing that connects to the home's drain pipes below, and most tubs have an overflow - that circular plate below the lip of the front wall of the tub (that sometimes has a trip lever). With a freestanding tub, the tubing that connects the overflow and the tub drain to the waste pipes below is exposed;

Where is the drain shoe?

As seen in the diagram above, the drain shoe is an elbow that lies directly below the tub drain, directing water from the tub into the horizontal pipe that leads to the bathroom drain line below the floor. You'll need to measure from the center of the drain to the "run" of the waste tee - where the overflow tube fits into it.

Is a freestanding tub a built in tub?

A freestanding tub makes measuring easy, since everything is exposed. Built-in tubs can present a bit of a challenge, however. A properly-constructed bathroom will have an access panel in the alcove (if applicable), or the wall adjacent to the built-in tub's plumbing (sometimes accessible from the next room or a closet).

How is an alcove bathtub positioned?

This is often how the alcove bathtub is positioned in a bathroom. If the bathroom has a narrow design, then the tub is usually situated so that the two longer walls of the space are the ends of the tub, and the back wall closes the tub. In such a design, the walls form an alcove.

What is a bathtub?

This post will come in pretty handy for anyone looking to change their bathtub 1 Trusted Source Bathtub - Wikipedia A bathtub, also known simply as a bath or tub, is a container for holding water in which a person or animal may bathe.

How big is an alcove tub?

These tubs are usually between 4 ½ to 6 feet long with a width of between 30 to 36″.

What is a freestanding bathtub?

Freestanding bathtub. This is a common type of bathtub, and many people recognize it immediately they lay eyes on it. As the name implies, these tubs are made as freestanding models that are not attached to the wall. There are several types of freestanding tubs, and inflatable hot tubes are also one type of these models.

What is the most important thing in a bathroom?

The bathtub is arguably the most important element of the bathroom. It isn’t just functional. But it is also the centerpiece of the bathroom. Therefore, you must choose the right one. Before you make a pick, you must consider the space available and the bathtub’ s size you want to buy.

What is a corner bathtub?

Corner bathtubs. As the name shows, these are installed in the corner of your space. They are elegant options that are often used in large bathrooms because of their large dimensions. If you spend plenty of time in the bathtub and love to soak in the tub, then you will love this type of bathtub.

Is there a standard size bathtub?

The truth is that there is no standard bathtub size. No dimension is viewed as the standard. Furthermore, as we have seen in this article, different manufacturers make tubs available in various sizes and styles. Therefore, we can only give a suitable size that is available on the market right now.

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