How to install a farmhouse sink in a laundry room

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Introduction

A farmhouse sink isn’t just for kitchens—it can be a stylish and highly functional upgrade for your laundry room. With its deep basin, durable build, and classic design, a farmhouse sink makes it easier to hand-wash delicate clothes, soak stained items, and handle messy cleaning tasks. This guide will show you exactly how to install a farmhouse sink in a laundry room, from choosing the right sink to hooking up plumbing, so you can enjoy a beautiful and practical upgrade.

Why a Farmhouse Sink Matters in a Laundry Room

Adding a farmhouse sink can improve both form and function in your laundry space:

  • Deep Basin: Ideal for soaking and scrubbing laundry or cleaning bulky items.
  • Durability: Usually made from fireclay, cast iron, or stainless steel, built to last.
  • Timeless Style: Adds a rustic yet elegant look that fits various decor styles.
  • Increased Workspace: The apron-front design makes it comfortable to stand closer while working.

With the right installation, a farmhouse sink can transform your laundry room into a more efficient and stylish workspace.

Step-by-Step Guide to Installing a Farmhouse Sink

1. Choose the Right Sink for Your Space

Before buying your sink, consider:

  • Size: Measure the width, depth, and height of your intended cabinet or countertop space.
  • Material: Fireclay is classic, cast iron is durable, and stainless steel offers a modern touch.
  • Mount Type: Farmhouse sinks can be installed as top-mount (drop-in) or under-mount.
  • Weight: These sinks can be heavy—ensure your cabinet and supports can handle it.

2. Gather Tools and Materials

Tools:

  • Tape measure
  • Circular saw or jigsaw
  • Drill with bits
  • Level
  • Wrench set
  • Silicone caulk gun

Materials:

  • Farmhouse sink
  • Sink supports (wooden frame or metal brackets)
  • Plumbing kit (P-trap, supply lines, faucet if needed)
  • Silicone sealant
  • Screws and brackets

3. Prepare the Cabinet and Countertop

  1. Turn Off Water Supply: Shut off the water to your laundry room sink area.
  2. Remove Old Sink (if applicable): Disconnect plumbing and lift out the old sink.
  3. Mark the Cutout: Measure your farmhouse sink dimensions and mark the cutout on the countertop.
  4. Cut the Opening: Use a jigsaw or circular saw to create the opening, following the manufacturer’s template.
  5. Build Support Frame: Farmhouse sinks often need a custom support frame inside the cabinet to bear their weight.

4. Build a Sturdy Support System

  • Use 2×4 lumber or similar to create a horizontal frame inside the cabinet.
  • The frame should hold the sink just below the countertop level for under-mount installations or flush for top-mount.
  • Secure the frame to the cabinet walls using screws and corner braces.

5. Dry Fit the Sink

  • Place the sink into the opening to check fit and alignment.
  • Ensure the front apron sits flush with the cabinet front.
  • Adjust support height if necessary before final installation.

6. Install the Sink

  1. Apply Silicone Sealant: Run a bead of silicone along the countertop edges where the sink will meet.
  2. Set Sink in Place: Carefully lower the sink into the opening and onto the support frame.
  3. Check for Level: Use a spirit level to ensure the sink is even—adjust if needed.
  4. Secure Sink: Depending on your model, secure with clips, brackets, or let it rest firmly on the frame and silicone.

7. Connect the Plumbing

  1. Install Faucet (if not already in place): Follow the manufacturer’s instructions.
  2. Connect Water Supply Lines: Attach hot and cold lines to the faucet.
  3. Install Drain Assembly: Apply plumber’s putty around the drain flange, insert into sink, and secure from underneath.
  4. Attach P-Trap and Waste Pipe: Connect to the existing drain line, tightening connections with a wrench.

8. Seal and Finish

  • Apply a final bead of silicone around the edges where the sink meets the countertop.
  • Wipe away excess with a damp cloth before it cures.
  • Allow 24 hours for silicone to fully set before heavy use.

Common Mistakes to Avoid

  1. Skipping the Support Frame
    • Mistake: Farmhouse sinks are heavy; without proper support, cabinets can warp.
    • Solution: Always build a sturdy frame before installation.
  2. Incorrect Measurements
    • Mistake: A sink that doesn’t fit properly can lead to costly adjustments.
    • Solution: Measure twice and follow the manufacturer’s cutout template.
  3. Poor Sealant Application
    • Mistake: Gaps can lead to water damage over time.
    • Solution: Apply silicone evenly and check for missed spots.
  4. Improper Leveling
    • Mistake: A tilted sink affects drainage and appearance.
    • Solution: Use a level during installation and adjust supports if needed.
  5. Forgetting Plumbing Alignment
    • Mistake: Misaligned drains cause leaks or improper flow.
    • Solution: Dry fit plumbing before sealing everything in place.

Extra Laundry Room Tips for Farmhouse Sink Owners

  • Add a Pull-Down Faucet: Makes rinsing and filling easier.
  • Use a Sink Grid: Protects the bottom from scratches and chips.
  • Install a Soap Dispenser: Keeps counters clutter-free.
  • Combine with Open Shelving: Store laundry supplies nearby for convenience.
  • Keep a Stain-Soaking Tub Handy: Perfect for pre-treating laundry before it goes in the wash.

For more laundry room upgrades, check out our “How to Build a Custom Laundry Countertop Over Washer and Dryer” guide to pair with your new farmhouse sink.

Conclusion

Learning how to install a farmhouse sink in a laundry room is a manageable DIY project that adds style, function, and durability to your space. By carefully measuring, building a proper support frame, and sealing everything correctly, you can create a sink area that lasts for years and makes laundry tasks much easier.

Pro Tip: If cutting into stone or quartz countertops, consider hiring a professional to ensure precision and avoid costly mistakes.

Bookmark this guide so you can confidently install your farmhouse sink and give your laundry room a beautiful upgrade.