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The 7 Biggest Mistakes Bathroom Installers Make: How to Ensure a Perfect Bathroom Renovation

Simple bathroom illustration with tub and sink

Bathroom renovations can be transformative, but they're also complex and prone to costly errors. Both homeowners and professionals must be vigilant about the common mistakes that can turn a dream bathroom into a problematic space. Understanding these pitfalls is key to ensuring a flawless installation. Here’s a detailed look at the seven biggest mistakes made during bathroom installations and effective strategies to avoid them.

Underpricing the Job

  • Mistake: Incorrectly estimating the cost of materials and labor can lead to financial strain or compromises in quality.

  • Solution: Conduct a thorough assessment of all expenses involved before setting a price. Include a contingency fund for unexpected issues and keep up-to-date with current prices for materials and labor.

Not Securing Squeaky Floorboards

  • Mistake: Failing to prepare the subfloor properly, especially not fixing loose or squeaky floorboards, can undermine the stability of new flooring.

  • Solution: Always check and repair the subfloor thoroughly before starting the installation. Make sure it's level and secure to support new fixtures and tiles.

Failing to Waterproof the Shower Area

  • Mistake: Neglecting to waterproof the shower area adequately can result in water damage and mold.

  • Solution: Implement comprehensive waterproofing measures, including the use of a waterproof membrane and sealing all joints and edges before tiling.

Incorrect Installation of Pipework

  • Mistake: Poorly installed pipework can cause leaks and functional issues.

  • Solution: Adhere strictly to plumbing standards and codes. Conduct multiple tests during the installation to identify and rectify leaks or flaws promptly.

Incorrect Use of Materials

  • Mistake: Utilizing materials that are not suited for moist and humid bathroom environments can lead to rapid deterioration.

  • Solution: Opt for materials specifically designed for use in bathrooms. Consult product recommendations and ensure compatibility with the existing setup.

Poor Communication

  • Mistake: Lack of clear communication with clients regarding the project's scope, timeline, and possible challenges can cause dissatisfaction.

  • Solution: Maintain open and frequent communication with clients. Regularly update them about progress and consult them about any necessary changes or decisions.

Inadequate Sealing and Finishing

  • Mistake: Insufficient sealing around fixtures and fittings can allow water to seep through, causing damage.

  • Solution: Use top-quality sealants and thoroughly seal all edges, corners, and junctures. Continually check and maintain these seals throughout the installation process.


Successful bathroom installations hinge on meticulous planning, precise execution, and clear communication. By recognizing and addressing these common installation mistakes, both professionals and homeowners can significantly enhance the quality and longevity of bathroom renovations. Understanding these errors empowers homeowners to effectively oversee renovations and ensures installers deliver superior results, leading to durable and beautifully finished bathrooms.


Staffordshires premier bathroom fitter Craig Stott standing in front of Branded CSI Van

A little about us

Craig Stott Installations Ltd is a dedicated team of home improvement specialists, passionate about transforming living spaces. Specialising in bathroom and wet room installations, tiling, and general plumbing, we bring over a decade of expertise to every project. Founded on the principles of quality, reliability, and customer satisfaction, our approach is tailored to meet the unique needs of each client. From the initial consultation to the final touches, we ensure a seamless and enjoyable experience. Our skilled team, led by Craig Stott, includes professionals in design, installation, and project management, supported by cutting-edge technology and a commitment to excellence.