Installing a stainless steel sink is a project that can be completed with basic tools and careful preparation. Whether it’s a kitchen upgrade or a new build, proper installation ensures a secure fit, watertight seal, and long-lasting durability.

This detailed guide explains How To Install A Stainless Steel Sink step by step — ideal for modern products such as those from Shunhan Sink, known for their high-quality steel construction and precision fit.

1. Tools and Materials Needed

Tools

• Jigsaw or hole saw

• Drill and bits

• Screwdriver

• Measuring tape and pencil

• Adjustable wrench

• Silicone sealant gun

• Level

Materials

• Stainless steel sink

• Mounting clips or brackets (usually included)

• Plumber’s putty or silicone sealant

• Sink strainer assembly

• Water supply hoses

• Drainpipes and gaskets

• Towels and sponge

2. Preparation

Step 1: Turn Off Water Supply

Shut off both hot and cold water valves under the sink. Disconnect the faucet lines if you’re replacing an old sink.

Step 2: Clear and Clean the Countertop

Remove any debris or old caulking. The surface must be flat, clean, and dry to ensure a tight seal.

Step 3: Measure and Mark the Cutout

• Place the sink upside down on the countertop.

• Trace around the edge with a pencil.

• Measure 1.5 cm (½ inch) inside the line — this is your cut line for the sink opening.

• Double-check dimensions before cutting.

Tip: For Shunhan’s precision-cut sinks, check the manufacturer’s installation guide for the exact cutout size — tolerances are tight for a perfect fit.

3. Cutting the Countertop Opening

Step 1: Drill Starter Holes

Drill a 10 mm (⅜ inch) hole inside each corner of the cut line. This helps guide the jigsaw.

Step 2: Cut the Opening

• Use a fine-tooth jigsaw blade suitable for wood, laminate, or stone.

• Cut slowly and follow the line carefully.

• Support the cutout section to prevent breakage near the end.

Step 3: Smooth the Edges

Sand rough edges lightly and remove any sawdust.

For granite or quartz countertops, cutting should be handled by a professional fabricator.

4. Installing the Sink

Step 1: Apply Sealant or Putty

• Turn the sink upside down.

• Apply a continuous bead of silicone sealant (or plumber’s putty) around the underside of the rim.

• Avoid gaps — this prevents water leakage under the countertop.

Step 2: Position the Sink

• Carefully lower the sink into the opening.

• Press down evenly so the sealant spreads and forms a watertight bond.

• Wipe away excess sealant immediately with a damp cloth.

Step 3: Secure with Mounting Clips

From underneath the counter:

• Attach the clips or brackets provided with the sink.

• Tighten screws evenly, alternating sides to ensure uniform pressure.

• Do not overtighten — this may warp thin stainless steel rims.

Shunhan stainless steel sinks often come with reinforced brackets for fast, secure installation on granite, quartz, or laminate countertops.

5. Installing the Drain and Faucet

Step 1: Install the Drain Assembly

1. Apply plumber’s putty under the sink strainer flange.

2. Insert the strainer through the drain hole.

3. From below, attach the rubber gasket, friction ring, and locknut.

4. Tighten until snug, then wipe away excess putty.

Step 2: Mount the Faucet (if applicable)

If your faucet is deck-mounted:

• Insert the faucet shank through the pre-drilled hole.

• Secure with the mounting nut and gasket underneath.

• Connect hot and cold water supply hoses to the shutoff valves.

Step 3: Connect the Drainpipes

Assemble the P-trap and tailpiece under the drain. Use Teflon tape on threaded joints for a leak-free connection.

6. Testing and Finishing

Step 1: Turn on the Water

Open both supply valves slowly. Check all connections for leaks.

Step 2: Test Drainage

Run water into the sink and verify that it drains smoothly without pooling.

Step 3: Clean and Polish

Remove protective film from the sink surface. Wipe down with mild dish soap and dry thoroughly with a microfiber cloth.

To preserve the brushed finish, always clean in the direction of the grain.

7. Installation Options: Top-Mount vs. Undermount

Shunhan Sinks are available in both configurations — each model includes installation hardware for the chosen style.

8. Maintenance After Installation

• Rinse the sink daily to prevent mineral deposits.

• Avoid leaving acidic substances (lemon, vinegar) for long periods.

• Never use steel wool or harsh abrasives.

• Dry after each use to prevent water spots.

Regular care maintains the shine, corrosion resistance, and durability of your stainless steel sink for years.

✅ Summary

Installing a stainless steel sink involves:

1. Turning off the water and preparing the counter.

2. Measuring and cutting the sink opening accurately.

3. Applying sealant and positioning the sink.

4. Securing with mounting clips.

5. Connecting the drain and faucet.

6. Testing for leaks and polishing the surface.

For precision-built sinks such as Shunhan’s stainless steel collection, following these steps ensures a perfect fit, watertight seal, and lasting aesthetic appeal.

Strong structure. Seamless design. Easy installation — choose Shunhan for a professional result every time.