What is the difference between rough plumbing and finish plumbing?

Author: Delilah Braun  |  Last update: Wednesday, September 17, 2025

New construction plumbing generally fits into two categories, rough in plumbing and finish plumbing. Rough-in plumbing is the process of installing vents, sewers, connections and waterlines. During the finish plumbing phase, plumbers will finish installations and connections to get the home ready for use.

What is meant by finish plumbing?

What Is Finish Plumbing? Finish plumbing includes adding plumbing fixtures after other builders add the walls and flooring into the home. Toilets, sinks, water heaters, and other fixtures go into place during this phase of construction.

What does a plumbing rough in include?

Defining Rough-In Plumbing

Rough-in plumbing includes the plumbing lines, vents, waste systems, and connection points for appliances. The finished rough-in includes your entire plumbing system but without the connection of appliances, toilets, and sinks.

What are the three main types of plumbing?

There are three different types of plumbing systems; sanitary drainage, stormwater drainage and potable water. Each of these systems have their own unique functions and purposes. Here is a more in-depth look into how these systems operate.

What comes after rough plumbing?

Once rough plumbing and mechanical are done, it's time for the rough electrical to go in. Then drywall. Texturing. Painting.

How to Conduct a Rough Plumbing Inspection | This Old House

What is the average cost to rough-in plumbing?

Most spend between $3,000 and $20,000. The average cost to rough-in plumbing for a bathroom is $6,500. However, it can range from as low as $3,000 to as much as $20,000. The final price depends on the piping material, bathroom size, labor fees, number of fixtures, and more.

What are the 3 stages of plumbing?

Home plumbing encompasses three fundamental phases: underground, above-ground (rough-in), and finishing. Each phase is important and contributes significantly to the success of your plumbing project.

What is the most popular plumbing type?

Copper and PEX are the most common pipe materials used in homes. Copper pipes are durable, corrosion-resistant, and can be used for hot and cold water. PEX seems to be replacing copper pipes at a high rate since it is less expensive, more flexible, and easier to install.

What is Level 3 plumbing?

As a Level 3 Plumbing and Domestic Heating Technician, you will be working with appliances such as heat emitters, pumps, oil, and solid fuel boilers as part of your work with hot water, central heating, and rainwater systems.

What is the preferred plumbing type?

Traditionally, copper pipes have been the preferred option due to their durability and reliability. However, PEX pipes are becoming increasingly popular for main water lines because of their flexibility, resistance to scale and chlorine, and ease of installation.

How long does it take to install rough plumbing?

How Long Does a Plumbing Rough-In Take? The plumbing rough-in is a complex process, and it takes time to do it correctly. Hiring a professional plumber to help you with this part of the construction process is vital. A typical plumbing rough-in takes between three and five days to complete.

What comes before rough-in plumbing?

Before the rough-in, the wall, floor and ceiling systems are built and left open, with no drywall installed. The plumbing rough-in begins when all the water supply and drain lines have been run through bored holes in the studs and other framing members.

Is rough-in plumbing hard?

It's a complex process that takes time and experience to complete without issues. The best way to complete rough-in plumbing for your new home is to hire a professional plumber. It isn't recommended to tackle rough-in plumbing work as a DIY project.

What is the difference between rough and finish plumbing?

New construction plumbing generally fits into two categories, rough in plumbing and finish plumbing. Rough-in plumbing is the process of installing vents, sewers, connections and waterlines. During the finish plumbing phase, plumbers will finish installations and connections to get the home ready for use.

What type of plumbing lasts the longest?

What plumbing pipes last the longest?
  1. PVC pipes. LIFESPAN: 50 to 70 years. ...
  2. Copper Pipes. LIFESPAN: 70 to 80 years. ...
  3. Cast Iron Pipes. LIFESPAN: 80 to 100 years. ...
  4. PEX pipes. LIFESPAN: 40 to 50 years. ...
  5. Galvanized steel pipes. LIFESPAN: 30 to 50 years.

What is a rough in size for a toilet?

Standard Dimensions of a Toilet

The most important of these measurements is the distance between the floor drain and the wall, called the rough-in. The standard rough-in dimensions for toilets is 12 inches. In older homes or small bathrooms, you'll sometimes see rough-in dimensions of 10 inches or 14 inches.

What is the lowest level of plumber?

Apprentice plumber

At this level, you can practice plumbing only under the supervision of a journey-level or master plumber. The requirements for a plumber apprentice license may include completing coursework and supervised on-the-job training.

What are 3 types of plumbing in a house?

Types of plumbing systems consist of potable water, sanitary drainage, and stormwater drainage. Potable plumbing systems supply clean drinking water through pipes and valves. Sanitary drainage systems remove wastewater from toilets, showers, and more. Stormwater drainage systems manage excess rainwater and snowmelt.

How long does it take to become a plumber?

The entire process takes a minimum of four years, but the time commitment is worth the effort. The job outlook for plumbers is better than average. The Bureau of Labor Statistics reports a 6% job growth with California having the highest employment rates.

Is PEX better than PVC?

PVC has been around since the early 1900s and is still used in many homes today. PEX, on the other hand, is a newer material that is often more resistant to corrosion and pressure. So the choice of which pipe to use in your home is ultimately up to you.

What kind of plumber makes the most?

Plumbers who are experienced in commercial plumbing and industrial piping tend to make the highest salaries. In addition, plumbers with expertise in underground pipe installation, backflow prevention, and water line installation can command higher wages than those who focus on residential projects.

How long does PEX last?

PEX often lasts around 50 years. However, PEX is more durable and has more flexibility than PVC and CPVC. Also, because PEX is made from cross-linked polyethylene, it won't corrode.

What is the first rule of plumbing?

Whatever project you may be undertaking, keep in mind the #1 rule of general plumbing: know what you are doing. Knowing what is to be done and having a plan can help prevent costly, time-consuming problems from developing.

What comes after plumbing rough in?

Tubs and showers usually need to go in after the rough plumbing but before the flooring. Flooring can happen before paint, but my preference is to get as many subs (plumbers and electricians and painters) out before flooring.

What code book do plumbers use?

The National Standard Plumbing Code™ (NSPC)

The 2024 National Standard Plumbing Code–Illustrated provides the latest information about common materials, fixtures, devices and equipment systems used or installed in plumbing systems.

Previous article
How much does a cabin filter cost?
Next article
What temperature to keep a house to prevent pipes from freezing?