What Should You Ask a Tile Installer?
A quality tile installation depends on hiring the right installer and understanding how they’ll do the work, especially the substrate prep, waterproofing, and what’s included. The right questions upfront reveal whether an installer is experienced and thorough. Here’s what to ask before hiring.
How Will You Prepare the Substrate?
Start with the substrate, the foundation of a lasting tile job. Ask how they’ll assess and prepare it, whether they’ll check for soundness, flatness, and stability, install proper backer board or underlayment where needed, and level or repair any issues. A knowledgeable installer explains that a proper substrate is essential and describes how they’ll ensure it, while one who glosses over the substrate is a concern. Ask how they handle substrate problems discovered during the job. Because the substrate determines whether the tile lasts or cracks, understanding the installer’s approach to it is a critical question revealing their thoroughness. (For more on this, see How to Find the Best Tile Installer.)
How Will You Handle Waterproofing?
For showers, tub surrounds, and wet areas, ask specifically how they’ll waterproof, what membrane or system they’ll use behind and beneath the tile, and how they’ll ensure it’s done correctly. Because tile isn’t waterproof and inadequate waterproofing causes serious damage, proper waterproofing is essential in wet areas. A knowledgeable installer explains their waterproofing approach clearly, while one who dismisses or is vague about it for a wet area is a serious warning sign. Understanding how the installer handles waterproofing is one of the most important questions for any shower or wet-area tile, since getting it wrong is costly.
What’s Included in the Quote?
Ask exactly what the quote covers, the tile, labor, substrate prep, waterproofing, removal of old tile or flooring, materials (grout, adhesive), sealing, and finishing. Tile quotes vary in scope, and a low quote may omit substrate prep, waterproofing, or removal that then costs extra, or that shouldn’t be skipped. Understanding the complete scope lets you compare quotes fairly and avoid surprises. An installer who provides a clear, itemized quote covering the full job is being transparent, while a vague quote missing key elements is a warning sign. Knowing exactly what’s included ensures you’re comparing like with like.
Are You Experienced With This Type of Job?
Ask about their experience with your specific type of tile job, floor, shower, backsplash, and with your tile type (large format, mosaic, natural stone), since different jobs require different skills. Shower and wet-area tile especially demands expertise (waterproofing, detailed work), and premium or difficult tile requires skill. An installer experienced with your specific job installs it correctly, while one unfamiliar may produce poor results. Confirming they regularly do your type of job, with examples to see, reduces the risk of a botched installation. Relevant experience is especially important for demanding jobs like showers. (For more on this, see Hidden Costs of Tile Installation.)
Can I See Your Work, and Are You Insured?
Ask to see examples of completed tile work, ideally similar to your project, and confirm they’re insured (and licensed where required). A portfolio shows you their quality, clean lines, even surfaces, good grout work, and craftsmanship. Insurance protects you if someone is injured or something is damaged. An installer proud of their work and properly insured is demonstrating capability and professionalism. Seeing their actual tile installations, especially similar to what you want, gives you confidence in their quality, so these are important checks before hiring someone for skilled tile work.
What About Sealing, Warranties, and Timeline?
Ask whether sealing is needed (for natural stone or grout) and if it’s included, about any workmanship warranty, and about the timeline. Natural stone and some grout need sealing to resist stains, so understanding if it’s included matters. A workmanship warranty gives recourse if the installation has problems. Knowing the timeline (including any curing time before use) sets expectations. An installer who addresses sealing, offers a workmanship warranty, and provides a realistic timeline is being professional. Understanding these details ensures a complete job, protection, and realistic planning for your tile project.
Asking About the Tile, References, and What Could Go Wrong
A few additional questions help complete your evaluation of a tile installer and give you a fuller understanding of the project and its risks. First, if the installer is supplying the tile, or advising on it, ask about the specific tile and whether it’s appropriate for your application, since the right tile for the location matters. A knowledgeable installer can advise whether your chosen tile suits its intended use, the right durability and water resistance for the location, appropriate slip resistance for a wet floor, frost resistance if outdoors, and flag if a tile is unsuitable for where you want it. An installer who can knowledgeably discuss whether the tile fits the application is demonstrating expertise that helps ensure your project succeeds, since even perfect installation of the wrong tile for a location leads to problems.
Second, ask for references or to see completed tile work, ideally installations that have been in place for a while, and ask directly what could go wrong or what challenges your specific project might present. References and older installations reveal how the installer’s work holds up over time, the real test of tile quality, since problems like cracking or water damage appear with use, so talking to past clients about how their tile has performed adds valuable confirmation. Asking what could go wrong, or what challenges the installer anticipates for your project, is particularly revealing: a knowledgeable, honest installer will discuss the real risks and challenges, substrate uncertainties that won’t be known until the old surface is removed, waterproofing requirements for a wet area, layout challenges, rather than pretending the job is trivial, and this candor reflects both expertise and integrity. An installer who acknowledges the genuine challenges and explains how they’ll address them is more trustworthy than one who glosses over everything. Together with the questions about substrate prep, waterproofing, scope, and experience, understanding whether your tile suits its application, how the installer’s past work has held up, and what challenges your project presents gives you a thorough, realistic picture of both the installer’s capability and your project’s real requirements, which is exactly what you need to choose confidently and set proper expectations for a tile installation that succeeds and lasts. (For more on this, see Common Tile Installation Mistakes and How to Avoid Them.)
Putting It Together
These questions, especially about substrate prep, waterproofing, what’s included, and experience, ensure you hire a thorough, skilled installer who’ll deliver a quality, lasting tile job. A good installer answers them all clearly, particularly on substrate and waterproofing. When you’re ready to get quotes from qualified local pros, connect below.
Frequently Asked Questions
How they'll prepare the substrate (assessing soundness, flatness, and installing backer board where needed), how they'll handle waterproofing in wet areas, what's included in the quote (tile, labor, substrate prep, waterproofing, removal, sealing, finishing), whether they're experienced with your type of job and tile, whether you can see their work and they're insured, and about sealing, warranties, and timeline. Substrate prep and waterproofing matter most.
How they'll prepare the substrate and, for wet areas, handle waterproofing. Because the substrate determines whether the tile lasts or cracks, and because tile isn't waterproof (making proper waterproofing essential in showers and wet areas to prevent serious damage), these two are the most critical questions. A knowledgeable installer explains both clearly, while vagueness about substrate prep or waterproofing for a wet area is a serious warning sign.
Yes, especially for showers, tub surrounds, and wet areas. Ask what membrane or system they'll use behind and beneath the tile and how they'll ensure it's done correctly. Because tile isn't waterproof and inadequate waterproofing causes serious damage, mold, and rot, proper waterproofing is essential. A knowledgeable installer explains their approach clearly, while one vague or dismissive about it for a wet area is a serious warning sign to avoid.
Yes. Tile quotes vary in scope, and a low quote may omit substrate prep, waterproofing, or removal that then costs extra or shouldn't be skipped. Ask exactly what the quote covers, tile, labor, substrate prep, waterproofing, removal of old tile, materials, sealing, and finishing. Understanding the complete scope lets you compare quotes fairly and avoid surprises, ensuring you're comparing like with like and not missing essential elements like waterproofing.
Yes, especially for demanding jobs. Different tile jobs require different skills, shower and wet-area tile demands waterproofing and detailed expertise, and premium or difficult tile (natural stone, mosaics, large format) requires skill. An installer experienced with your specific job installs it correctly, while one unfamiliar may produce poor results. Confirming they regularly do your type of job, with examples to see, reduces the risk of a botched installation.
