Top 5 Reasons for Faucet Failure After a DIY Install

1. Overtightening the Connections

When installing a faucet, it can be very tempting to tighten the faucet connections as tightly as possible to avoid leaks and to ensure the faucet stays securely in place. The problem with this is that overtightening can strip threads, crack fittings, and warp the seals on the faucet assembly. This can lead to poor water pressure, or worse, it could lead to internal water leaks which can result in costly water damage repairs. To avoid this, a well-equipped DIYer can avoid overtightening by using a torque wrench to apply the precise torque recommended by the manufacturer. For the average DIYer, we suggest starting by tightening all nuts by hand, and then carefully using a wrench to tighten until you feel resistance—if it becomes hard to turn, stop immediately to prevent damage to the faucet assembly. 

2. Skipping Plumber’s Tape

Another common DIY mistake while installing a faucet is forgetting to apply plumber’s tape on the male ends on all connections of the faucet. Many DIYers assume tightening the fittings is enough, but without a proper seal, water can seep through the threads—even if the connection feels snug. Forgetting this step can cause sputtering and uneven water flow and over time it can cause leaks that may lead to pipe corrosion and water damage. This can all be avoided by wrapping plumber’s or Teflon tape around the threads of the male ends of all of the faucet connections. Start by cleaning the threads thoroughly, making sure there is no moisture or debris on them before applying the plumber’s tape. Pull the tape taut and wrap it around the entirety of the threads. When wrapping the tape it is important to wrap it clockwise, ensuring the tape overlaps on itself throughout the process to ensure full coverage. After that, wrap two to three layers of this tape around these connections before tightening them to ensure that the connection has a watertight seal. Lastly, press down on the tape to smooth it down so the fitting screws on cleanly without bunching or tearing.

3. Failure to Flush Supply Lines Before Install

When installing a new faucet—especially after construction or plumbing work—sediment, mineral debris, and small particles often build up in the supply lines. If these sediments aren’t properly flushed before a new faucet is installed, it can clog the faucet’s internal components, leading to low pressure, leaks, drips, and slow degradation of the faucet’s components. Flushing the lines is critical before connecting the faucet. To do that, turn off the water supply to both the hot and cold and remove the current faucet. Then run water through the lines for 5 to 15 minutes, emptying the sediment into the sink basin if possible, or a bucket if there is no sink basin. If the faucet installation kit calls to flush the lines again after installation like the Brentwood Pioneer Two Handle Bathroom Widespread Faucet 3BR410, simply remove the aerator and let the faucet line run for another 5-15 minutes the same way as before installation. This will clean the supply lines of sediments and prevent degradation of both the pipes and the faucet. Once this is done, reattach the aerator, and the faucet should run, free of pipe sediments. 

4. Incorrect Mounting or Misalignment

Improperly mounting a faucet can lead to a host of issues. A misaligned faucet may cause poor water flow direction, leaks around the base, or even stress on the supply lines. If the faucet shifts or isn’t securely fastened after installation, gaskets may not seal properly, leading to water damage under the sink. In undermount or granite countertops, an uneven install can be especially problematic, as correcting it often requires full removal. To avoid misalignment, start by dry-fitting the faucet to ensure proper placement before tightening any mounting hardware. Use a level to confirm the faucet is sitting straight, and make small adjustments as needed before securing it. When tightening, alternate sides evenly to prevent the faucet from shifting during installation.

5. Choosing the Wrong Faucet Kit

Many faucets on the market are complicated to install, being built for plumbers rather than being accessible to DIYers. Many have confusing instructions, don’t suit the intended room or configuration, or require specialty tools that many DIYers just don’t have. The wrong faucet kit often results in installation headaches, leaks, or do-overs, causing many DIYers to give up altogether. This makes it important to choose an easy-to-install faucet package with quick-connect technology like the Olympia Accent Single Handle Pull-Down Kitchen Faucet K-5040, with a quick-mount kit that includes a quick-connect adapter that will connect to any kitchen supply line. These kits include flexible supply lines with hex nut connectors that simplify attachment to stop valves—no soldering or compression fittings required. Our kits are designed with intuitive alignment and minimal tool use (usually just a screwdriver), making these kits ideal for professionals and home installers alike. Choosing the right faucet kit the first time—especially one engineered for fast, reliable installation—can save hours and prevent common DIY mistakes. Pioneer and Olympia’s innovations give users professional-level results without the hassle.

Wrapping Up

Even the most confident DIYers can run into trouble when installing a faucet. From skipped steps like flushing lines or using plumber’s tape to choosing a faucet kit that’s simply too complex, small oversights can lead to big problems. By understanding common pitfalls—and selecting installation-friendly products like those from Pioneer and Olympia—homeowners can enjoy a smoother install and a faucet that performs beautifully for years to come.

Pioneer, Olympia, and Central Brass

With over 100 years of combined experience, Pioneer, Olympia, and Central Brass create faucet solutions that prioritize reliability, simplicity, and long-term performance. Their intuitive designs, quick-mount kits, and durable construction help eliminate many of the common pitfalls that cause DIY installation failure. Whether it’s preventing leaks, avoiding alignment issues, or simplifying hose connections, their products are engineered to make installation smoother and more successful from the start. For homeowners who want professional-level results without the stress, these brands offer trusted, time-tested solutions.

There are many ways to the same destination. This saying applies to multifamily housing builds just as much as to anything else in life. The ultimate goal is save as much money as possible while delivering a great finished project – that’s simply showing smart business sense. But, finding a one-off deal or sacrificing quality isn’t the only way to get a healthy ROI. We have a better way.

Pioneer works with professionals every day to develop specification packages and plans that save our valued partners both time and money, sometimes in surprising ways. It’s our goal to ensure your project meets or exceeds its expected outcome. We want to get to know you and your company and show you how we can save you money.  Please reach out via our website form or call us at (800) 338-9468.