A bathtub is an essential fixture in any modern bathroom, offering comfort and practicality for daily use. However, many homeowners and bathroom enthusiasts may not realize how many parts of a bathtub are involved in creating the perfect bathtub experience.

Whether upgrading your bathroom, renovating, or simply curious about the bathtub's anatomy, understanding the key bathtub parts can help you make informed decisions and improve your overall bathing experience.

In this article, we'll explore the 15 parts of a bathtub you need to know, so you can easily maintain, repair, or enhance your bathtub.

15 Parts of a Bathtub: The Key Components

All tub parts are crucial in performance, safety, and aesthetic appeal. These include water supply pipes, shut-off valves, showers, bathtubs, drains, access panels, water supply, overflow control, planar cross, traps, waste outlets, faucets, flexible connector lining, and rims. Below are the 15 key bathtub components.

Bathtub Anatomy Photo

1. Water Supply Pipes

Water supply pipes are the vital bathtub components that deliver hot and cold water to your bathtub. Let's know what water supply pipes are made of and how they connect to other bath parts:

• Types of Materials: Copper and PEX are the most commonly used materials. Copper is known for its durability and resistance to corrosion, while PEX is flexible, making it easier to install.
• Connection Points: These pipes connect to the shut-off valve, faucets, and shower controls, ensuring water reaches your bathtub at the right temperature and volume.

2. Shut-Off Valve

The shut-off valve is a key safety and maintenance feature. It is typically located near the water supply pipes, the shut-off valve is usually installed behind an access panel for easy access.

It allows you to control the flow of water to the bathtub. It also enables repairs or maintenance without shutting off the entire water supply to your home.

3. Shower

A bathtub's shower system typically includes several key tub components that control the flow and temperature of the water, as well as the direction it flows.

Here are the four shower tub components:

a. Showerhead

The showerhead delivers water to you in a controlled spray. It can come in various designs, including handheld, rain-style, or multi-function models, allowing you to choose the preferred water flow.

b. Shower Control

The shower control is the mechanism to adjust water temperature and pressure. It can be a single-handle valve or a dual-handle system, with one control for hot water and one for cold.

Some modern systems feature digital controls for precise temperature regulation.

c. Diverter Pipe

The diverter pipe redirects the water from the tub faucet to the showerhead. It's typically controlled by a lever or knob, allowing you to choose the bathtub or the shower to use.

d. Shower Valve

The shower valve controls the water pressure and temperature of the shower. It regulates the flow of water from the supply pipes and ensures the water temperature is safe and comfortable.

4. Bathtub

The bathtub itself is the main body of the bathing area. It holds the water and provides a space for relaxation. The tub is typically made from durable materials such as acrylic, fiberglass, cast iron, or steel.

5. Drain

The drain system is essential for draining the water after you've finished bathing. It includes several important bathtub drain components that ensure proper drainage and prevent water from accumulating in the tub.

a. Stopper Mechanism

The stopper mechanism is what allows you to block the drain to fill the tub with water or open it to drain the water. Stoppers come in different types, including pop-up, lift-and-turn, and trip lever systems.

b. Drain Flange

The drain flange is the metal ring that surrounds the drain opening, securing the drain to the tub. It's typically made of chrome or another durable material.

c. Drain Pipe

The drain pipe is the section of plumbing that leads from the drain to the waste outlet, carrying the used water away from the bathtub.

d. Overflow Plate

The overflow plate prevents the water from spilling over the edge of the bathtub by providing a controlled path for excess water to drain away.

e. Overflow Tube

The overflow tube connects to the overflow plate and leads the excess water into the drain system, ensuring the bathtub never overflows.

f. P-trap

The P-trap is a curved pipe that holds a small amount of water, preventing odors from escaping into the bathroom. It ensures that waste and water flow through the drain system effectively while blocking sewer gases from entering the home.

g. Tailpiece

The tailpiece is the part of the drain that connects the drain flange to the rest of the plumbing system. It directs water into the drainpipe and ensures proper drainage.

h. Waste Pipe

The waste pipe is the section of plumbing that carries wastewater away from the bathtub and into the home's main drainage system.

i. Gaskets and Sealants

Gaskets and sealants are used to create watertight seals between the various bathtub drain components, ensuring that no leaks occur at the connection points.

6. Access Panel

The access panel provides easy access to the plumbing components behind or beneath the bathtub, including the water supply lines, shut-off valves, and the drain system. It provides a clean and sleek look while allowing for quick maintenance when needed.

7. Water Supply

The water supply system ensures that water reaches the bathtub from the main water line. It includes all the pipes and valves that bring hot and cold water into the bathroom and direct it to the faucet, shower controls, and the tub fixture.

8. Overflow Control

Overflow control prevents your bathtub from spilling over the edge if you accidentally leave the water running. This safety feature directs excess water into the drain. It comprises two parts:

a. Faceplate

The faceplate covers the overflow opening, providing a clean and aesthetically pleasing look while allowing water to drain if necessary.

b. Overflow Pipe

The overflow pipe leads from the faceplate to the drain system, ensuring any excess water is safely redirected.

9. Planar Cross

The planar cross is a plumbing component designed to direct water flow. It is a type of junction fitting that connects multiple pipes, helping to ensure proper distribution of water throughout the system.

10. Trap

The P Trap is a U-shaped pipe down underneath the drain that prevents sewer gases from entering the bathroom. It holds a small amount of water at all times, ensuring a seal that blocks odors from flowing back into the room.

11. Waste Outlet

The waste outlet is the opening that leads from the bathtub to the main drainage system. It's the exit point for wastewater, ensuring used water flows away from the bathtub.

12. Faucets

Bathtub faucets are used to control the water flow into the tub, allowing you to adjust the temperature and pressure.

There are five parts of a tub faucet:

a. Faucet Spout

The faucet spout directs water into the bathtub, typically positioned above the tub's edge.

b. Dome

The dome is a protective cover for the faucet, designed to prevent splashing or water buildup.

c. Cartridge

The cartridge is the internal mechanism of the faucet that controls the flow and temperature of water.

d. Retaining Nut

The retaining nut holds the faucet components in place, ensuring a secure and stable installation.

e. Lever and Handle

The lever or handle controls the faucet, adjusting both the temperature and water flow.

13. Flexible Connector

A flexible connector is a plumbing hose used to connect the faucet or water supply pipes to the bathtub's water inlet. These connectors are often made from braided stainless steel or flexible plastic, allowing for easy installation and maintenance.

14. Lining

The bathtub lining refers to the inner surface of the bathtub, which may be made of acrylic, fiberglass, or other materials. The lining helps protect the tub from scratches, stains, and general wear and tear.

15. Rim

The rim is the upper edge of the bathtub that defines its shape. It is often designed with a lip to prevent water from spilling over the edge of the tub fixture.

How Much Does Bathtub Installation Cost

The bathtub installation costs depend on many factors.

Here is a breakdown of any potential costs considered when purchasing a bathtub and how to save costs:

1. Factors Influencing Installation Costs

• Bathtub Type: Standard tubs (acrylic/fiberglass) cost less ($300 - $1,000). Luxury tubs like freestanding, clawfoot, or whirlpool tubs can range from $1,500 to $5,000 or more.
• Installation Complexity: Simple installations may cost $500 - $1,500, while more complex jobs (moving plumbing, electrical work) can increase the price.
• Location: Costs vary by geographic area. Urban areas generally have higher labor and material costs.
• Labor Costs: Professional plumbers charge $50 - $150 per hour. Basic installs take 4-6 hours and more complex ones take up to 12 hours.

2. Additional Costs

• Old Tub Removal: Removing an old tub can cost $200 - $500.
• Tiling and Surrounds: Adding tile around the tub can cost $1 - $5 per square foot.
• Permits: Some installations may require permits, adding $50 - $500 to the total cost.

3. Average Installation Costs

• Standard Bathtub: $500 - $1,500
• Freestanding Bathtub: $1,500 - $3,000
• Whirlpool Bathtub: $2,000 - $5,000
• Clawfoot Bathtub: $1,500 - $3,500

4. Cost-Saving Tips

• Choose a standard tub to lower costs.
• Get multiple quotes from contractors.
• Bundle services (e.g., tiling and plumbing) to save on overall costs.

Should You DIY or Hire a Pro For Bathroom Renovation

To decide whether to DIY or hire a pro for bathroom renovation, you should know the advantages and disadvantages of them respectively first. In this way, you can make an informed decision after taking all factors into full account.

1. Pros and Cons of DIY Bathroom Renovation

1) Pros of DIY

• Cost Savings: You save on labor costs.
• Personal Satisfaction: Completing the project gives a sense of achievement.
• Control Over Design: You can choose everything to fit your style.
• Flexible Timing: You can work at your own pace.

2) Cons of DIY

• Time-Consuming: DIY renovations often take longer.
• Risk of Mistakes: Lack of experience can lead to costly errors.
• Limited Tools: Special tools may be needed.
• Building Code Issues: DIY can unintentionally violate codes, causing problems later.

2. Pros and Cons of Hiring a Professional for Bathroom Renovation

1) Pros

• Expertise & Experience: Professionals have the skills and knowledge to handle all aspects of the renovation, ensuring compliance with codes and regulations.
• Time-Saving: A professional can complete the job faster, avoiding delays and the hassle of acquiring specialized tools.
• Quality Work: Professionals deliver precise, high-quality results, from plumbing to tiling.
• Design Ideas & Resources: They offer creative design suggestions and access to better materials at discounted prices.
• Warranty: Many professionals offer warranties on their work, providing peace of mind and reducing future repair risks.
• Increased Home Value: A professionally done renovation can boost your home's value, making it a good investment.

2) Cons:

• Cost: Hiring a professional can be expensive, especially when factoring in labor and materials.
• Less Control: You might have less direct control over the design and timeline, especially if delays occur.
• Miscommunication: Misunderstandings between you and the contractor could lead to unsatisfactory results.
• Scheduling Issues: Professionals may have packed schedules, potentially delaying your project.
• Hidden Costs: Unforeseen issues (e.g., plumbing or structural problems) can increase costs.
• Less Personal Involvement: If you enjoy DIY projects, hiring a professional may leave you feeling detached from the process.

3. When DIY is a Good Option

• Painting and Decorating: Simple tasks like painting or installing a backsplash.
• Replacing Fixtures: Changing faucets or towel bars.
• Installing a Shower Curtain or Screen: Easy and quick installations.
• Tiling (Experienced DIYers): If you're skilled, you can tile your bathroom.

4. When to Hire a Professional

• Plumbing: If you're moving pipes or installing new fixtures.
• Electrical: Any wiring or electrical work should be done by a licensed electrician.
• Structural Changes: If you need to change walls or layouts.
• Full-Scale Remodels: Major renovations require expert handling.

In summary, for small tasks, DIY can save money and offer personal satisfaction. However, for plumbing, electrical work, full-scale remodels, or structural changes, hiring a professional ensures safety, efficiency, and high-quality results.

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FAQs

How many hours does it take to install a bathtub?

The bathtub installation time typically ranges from 4 to 8 hours, depending on the complexity of the project. A simple bathtub parts replacement might take less time while installing a new tub can take longer.

Factors like plumbing adjustments, tiling, and waterproofing can extend the installation time.

How is a bath overflow tested for leaks after installation?

After installation, a bath overflow is tested for leaks by filling the tub with water and checking for any signs of leakage around the overflow pipe, flange, and surrounding seals.

A professional will often use a pressure test or visual inspection to ensure the overflow system is sealed properly, preventing any water from escaping.

Do all showers have a shower trap?

Yes, all showers should have a shower trap or P-trap. The trap is a crucial component that prevents foul odors from rising through the drain. It works by holding a small amount of water and creating a seal.

It also ensures proper drainage by allowing water to flow out while blocking gases.

How is a bathtub drain connected?

A bathtub drain is typically connected to the overflow pipe and the main waste pipe through a series of fittings and seals.

Water flows from the tub into the drain, then through the drain flange, down the drainpipe, and finally into the home's plumbing system. Proper installation is essential to avoid leaks.

What is the faucet on a bathtub called?

The faucet on a bathtub is commonly referred to as the "tub faucet" or "bathtub spout". It is the fixture that delivers water into the tub and typically includes separate controls for hot and cold water.

Some bathtubs also feature a "diverter" on the faucet, which directs water either to the tub spout or to a showerhead.

Conclusion

Understanding the different parts of a bathtub is crucial for anyone looking to purchase, maintain, or repair their bathtub. Besides, DIYers must know how these parts of a bathtub are connected.

Whether you DIY or hire a professional for installation, maintenance, and even upgrades, take all costs and pros and cons into account and make an economical decision.

Know more, think more, and ensure every bath you take remains as relaxing as the last!

More Reading

• How to Install a Bathtub
• Bathtub Faucet Buyer's Guide
• Best Bathtub and Shower Faucets