Top Mistakes to Avoid When Installing Your Kitchen Faucet

Top Mistakes to Avoid When Installing Your Kitchen Faucet
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Written by Lucas Punte

Installing a new kitchen faucet may seem like a simple DIY task, but overlooking even minor details can lead to leaks, water damage, or even a complete redo. Whether you're a seasoned DIY enthusiast or a first-time homeowner, understanding what not to do is just as crucial as knowing the correct steps.

At House of Kitchen, we not only offer a wide range of premium kitchen sinks and faucets but also empower you with the knowledge you need to install them correctly the first time. Here’s a detailed look at the most common mistakes to avoid when installing your kitchen faucet—and how to do it right.

Ignoring Compatibility with Your Sink Type

One of the most overlooked issues is faucet compatibility. Whether you have a single-hole, top hole, or Belfast sink, make sure your faucet matches the configuration. Installing a faucet into an incompatible sink model can cause stability problems and leave visible gaps that invite leaks.

👉 Explore sink models like single, 1.5, and double bowl sinks to find what best suits your faucet choice.

Ignoring Compatibility with Your Sink Type

Failing to Turn Off the Water Supply

This seems obvious, but it’s surprisingly common. Before removing your old faucet or beginning installation, shut off the water valves under the sink. Failing to do so can result in serious flooding and water damage to your cabinetry and flooring.

Failing to Turn Off the Water Supply

Not Cleaning the Mounting Surface

Debris, old caulk, and rust can prevent the new faucet from sealing correctly, leading to future leaks. Before installation, clean the sink surface thoroughly—especially if you're upgrading to a faucet on a stainless steel, granite, or ceramic sink.

✅ Pro Tip: Visit our materials guide to learn how to care for your sink type before and after faucet installation.

Not Cleaning the Mounting Surface

Forgetting to Use Plumber’s Tape

Skipping plumber’s (Teflon) tape on threaded connections is one of the most common mistakes. Without it, leaks are inevitable. Always wrap tape around the threads of the faucet’s water lines to ensure a watertight seal.

Forgetting to Use Plumber’s Tape

Over-Tightening the Mounting Hardware

Too much force on nuts and bolts may crack the faucet base, damage your countertop, or strain the sink. Tighten just enough to secure it without forcing it. This is especially critical for undermount and flush mount sinks where excess pressure can cause cracks.

Misaligning the Faucet with the Sink Bowl

Improper faucet positioning can lead to splashes outside the sink or poor ergonomics. Double-check your alignment so that the water stream falls comfortably into the center of the basin.

This is particularly important for deep Belfast sinks or when installing faucets with pull-out or pull-down sprayers.

Ignoring Faucet Height and Reach

It’s not just about the faucet looking good—it should function properly. Ensure your faucet has enough clearance above and adequate reach across your sink, especially for double bowl or large Belfast models.

Not Checking for Leaks After Installation

Once your faucet is in place, test all connections before sealing everything up. Turn on the water slowly and check each hose and joint for drips or pooling. Many leaks start small but worsen over time.

Skipping Manufacturer Instructions

Even if you've installed faucets before, always read the instruction manual provided. Different brands like Blanco, Franke, or Caressi may have specific assembly steps or unique washers and mounting parts.

Forgetting to Register Warranty or Keep Spare Parts

After installation, keep a copy of your warranty and any leftover washers or clips. Brands like Alpha, or Villeroy & Boch often include extras that could save you in the future.

Final Thoughts: Install with Confidence

Avoiding these common mistakes can make the difference between a successful installation and a frustrating redo. At House of Kitchen, we’re here to support you with expert advice, premium faucet and sink selections, and quality you can trust.

Explore our collections by brand, material, installation type, or model to find the perfect faucet and sink pairing for your kitchen.

Need more help? Reach out to our team—we're happy to guide you step-by-step!