DIY Deck Mount Tub Faucet Installation Guide

April 17, 2024
DIY Deck Mount Tub Faucet Installation Guide

Written by: Deane Biermeier / Facts Checked by; Ryan Cullenward / Products Tested by Licensed Interior Designers

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Deck-mount tub faucets are installed on the deck of the bathtub rather than on the wall. They come in various styles and finishes and are a great way to upgrade the look of your bathroom.  

Benefits of DIY Deck Mount Tub Faucet Installation   

Installing a deck mount tub faucet can save you money on professional installation costs. It also gives you the satisfaction of completing a DIY project and the opportunity to learn a new skill.  

Tools and Materials Needed  

  • Adjustable wrench  
  • Basin wrench  
  • Screwdriver  
  • Plumber’s putty  
  • Teflon tape  
  • Mounting plate  
  • Faucet handles  
  • Water supply lines  

Step-by-Step Guide for DIY Deck Mount Tub Faucet Installation  

Step 1: Shut off Water Supply   

Before beginning any plumbing project, turn off the water supply to the bathtub. You can usually find the shut-off valve near the bathtub or the basement.  

Step 2: Remove the Old Faucet   

Loosen and remove the nuts that secure the old faucet to the bathtub using a basin wrench. Carefully lift the faucet and handle off the bathtub.  

Step 3: Install Mounting Plate   

Apply the plumber’s putty to the underside of the mounting plate and place it onto the bathtub deck. Use a screwdriver to secure the mounting plate in place.  

Step 4: Attach Faucet Handles   

Slide the faucet handles onto the valves and tighten the set screws with a screwdriver. Make sure the handles are straight and aligned.  

Step 5: Connect Water Supply Lines   

Connect the water supply lines to the valves and tighten them with an adjustable wrench. Use Teflon tape on the threads to control leaks.  

Step 6: Test for Leaks   

Turn on the water supply back and test for leaks. If you detect any leaks, tighten the connections and retest until the leaks have stopped.  

Tips for Successful DIY Deck Mount Tub Faucet Installation  

Tip 1: Follow the Manufacturer’s Instructions   

Make sure to read and follow the manufacturer’s instructions carefully. It will ensure you correctly install the deck mount tub faucet and prevent potential issues.  

Tip 2: Use Teflon Tape on Threads   

To prevent leaks, use Teflon tape on the threads of the water supply lines and any other threaded connections.  

Tip 3: Check for Leaks before Finishing the Installation   

Before finishing the installation, test the deck mount tub faucet for leaks. It will save you from having to redo any work or causing any damage to your bathroom.  

Tip 4: Dripping Faucet

  • Inspect the faucet handles and cartridge for any signs of wear or damage.
  • Tighten or replace the cartridge as needed to stop the dripping.
  • Ensure that all connections are secure and there are no leaks contributing to the dripping.

Tip 5: Uneven Water Temperature

  • Check the temperature control mechanism within the faucet handles for any issues.
  • Adjust the temperature limiter, if applicable, to ensure a consistent water temperature.
  • Verify that the hot and cold water supply lines are connected correctly and functioning properly.


Installing a deck mount tub faucet can be a simple and rewarding DIY project. Following our step-by-step guide and tips, you can successfully install a deck-mount tub faucet and upgrade the look of your bathroom.  

You can achieve a successful DIY deck-mount tub faucet installation with the right tools and materials. Remember to take your time and observe the manufacturer’s instructions. If you face any problems, please don’t hesitate to contact a professional for assistance. 

Disclosure: receives an affiliate commission on some, but not all, of the products we recommend—but only if you decide to click through to the retailer's site and make a purchase.

Deane Biermeier - A senior contractor and an experienced freelance writer - expert for reviews

Deane is an amazing freelancer with wide range of skills. He has good ideas and a prominent passion of writing. He is currently working on many websites including Sanitary Supply.

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