The CTI certification is taken by tile installers who want a credential from the Ceramic Tile Education Foundation. This page gives you free practice sets by topic, three worked questions with full explanations, a study plan, and the exam facts the foundation publishes: format, passing grade, fee and retake rules.
The CTI has 155 questions, takes about 4 hours and costs $629[1][2] (Ceramic Tile Education Foundation, verified Oct 26, 2026).
Numbers in brackets link to the official sources listed under Sources & last verified. Dates that have passed are removed automatically.
| Item | Detail | Source · Verified |
|---|---|---|
| Number of questions | 155 questions, open book (multiple choice + true/false), plus a hands-on test[1] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Time limit | 4 hours for the online exam, taken in one sitting; hands-on test runs 7:09 am–4:00 pm[1] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Passing score | 85% combined (pass/fail)[1] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Exam fee | $629 per installer (covers online + hands-on tests and study materials)[2] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Retake policy | Retake one or both tests at a reduced cost[1] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Delivery | Online open-book exam at home/office + in-person hands-on test at a regional warehouse (US only)[1] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Eligibility | 2+ years full-time as lead tile installer (3–5 years recommended)[2] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Score release | Within 7 business days[1] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Late registration deadline | $300 rescheduling fee without email notice 2 weeks before the test date[1] | Ceramic Tile Education Foundation · Oct 26, 2026 |
| Registration opens | Open year-round; you can register without choosing a date or location[3] | Ceramic Tile Education Foundation · Oct 26, 2026 |
According to Ceramic Tile Education Foundation, “The online knowledge test is open-book and consists of 155 questions which are a combination of multiple choice and true/false.”[1]
The CTI program is run by the Ceramic Tile Education Foundation. It certifies tile installers through a knowledge test and a practical test, so the result reflects both what you know and how you work.
Delivery. The knowledge test is an online, open-book exam you take at home or the office on your own schedule. The hands-on test takes place at a regional warehouse, and the foundation lists this for the US only.
Format and time. The online exam has 155 questions, a mix of multiple choice and true/false. You get 4 hours and must finish in a single sitting. The hands-on test runs from 7:09 am to 4:00 pm.
Scoring. The hands-on evaluation sheets are combined with your online score. A passing grade is 85% combined, and results arrive within 7 business days.
Eligibility and cost. You need at least 2 years as a full-time lead tile installer, and the foundation recommends 3 to 5 years. Registration is $629 per installer and covers both tests and the study materials. It is open year-round, and you can register without choosing a date or location.
Retakes. You can retake one or both tests at a reduced cost. If you cannot attend, email notice is needed 2 weeks before the test date, or a $300 rescheduling fee applies. Check the foundation's FAQ for current details.
The content areas below are copied from the official CTI content outline published by Ceramic Tile Education Foundation. The right-hand column shows which of our practice sets covers it.
| Official content area | Practice on this site |
|---|---|
| Backer boards[2] | CTI Substrate Preparation & Assessment Practise matching each backer board type to its substrate, fastening method and joint treatment. |
| Bonding materials[2] | CTI Grout & Mortar Systems Practise choosing the right mortar or adhesive for the tile type, substrate and exposure. |
| Cementitious grout[2] | CTI Grout & Mortar Systems Practise grout types, joint width limits, mixing, curing and the problems caused by poor handling. |
| Ceramic tile performance properties[2] | CTI Tile Materials & Specifications Practise reading tile specifications such as water absorption, slip resistance and rectified edges. |
| Concrete substrate considerations[2] | CTI Substrate Preparation & Waterproofing Practise judging slab flatness, cure, moisture and surface contamination before setting tile. |
| Crack isolation membranes[2] | CTI Substrate Preparation & Waterproofing Practise when a membrane is needed and how it differs from a waterproofing layer. |
| Flexible sealants (caulks)[2] | CTI Movement Joints & Expansion Joints Practise where sealant replaces grout and why the joint must be sized and backed correctly. |
| Industry associations and industry standards[2] | CTI Building Codes & Standards Practise knowing which standard or handbook answers which kind of installation question. |
| Movement joints[2] | CTI Movement Joints & Expansion Joints Practise where joints are required, including perimeters, changes in plane and restraining surfaces. |
| Safety[2] | CTI Safety & Compliance Regulations Practise protective equipment, dust control and safe handling of setting materials and cutting tools. |
| Tile installation workmanship standards and best practices[2] | CTI Installation Standards & Techniques Practise layout, coverage, lippage limits and the techniques that separate sound work from defects. |
| Wood substrate considerations[2] | CTI Substrate Preparation & Assessment Practise how framing, underlayment and deflection affect whether tile can be set on a wood floor. |
Prepare for the CTI - Certified Tile Inspector exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.
Question: Which element is CRITICAL for maintaining proficiency in tools & equipment operation within Certified Tile Inspector?
Answer: A. Regular practice with ongoing professional development and skill updates
Explanation:
The correct answer is regular practice with ongoing professional development. Tools, materials and methods change, so skill stays sharp only when you keep using it and keep learning.
Initial certification alone is wrong because a credential shows what you knew at one moment, not that you are current. Performing techniques only when absolutely necessary is wrong because rarely used skills fade. Learning from informal sources without verification is wrong because unchecked advice can spread poor practice.
The rule to remember: proficiency is maintained by repeated practice plus checked, current information, never by a single qualification or by guesswork.
Question: What does the term 'rectified tile' mean?
Answer: B. Tiles with smooth, machine-cut edges
Explanation:
The correct answer is tiles with smooth, machine-cut edges. A rectified tile is cut or ground after firing so the edges are straight and the sizes consistent, which allows tighter joints and a flatter look.
Rough edges describe the opposite, an unfinished or cleft edge. Irregular shapes are wrong because rectification is about precise, uniform dimensions, not shape variety. Painted surfaces are wrong because it concerns the edge finish, not the glaze or decoration on the face.
The rule to remember: rectified refers to how the edges are finished, and it does not mean the tile needs no careful layout or flat substrate.
Question: Movement joints must be installed wherever tile abuts which type of surfaces?
Answer: B. Restraining surfaces such as walls, curbs, columns, pipes, and changes in plane
Explanation:
The correct answer is restraining surfaces such as walls, curbs, columns, pipes and changes in plane. Tile and its setting bed expand and contract, and where that movement is blocked by a fixed element, stress builds up and can cause cracking or debonding.
Only exterior masonry walls is wrong because interior restraints matter too. Only plumbing fixtures and drains is wrong because it ignores structural elements and plane changes. Perimeter walls in commercial projects only is wrong because the requirement does not depend on project type.
The rule to remember: wherever tile meets something that will not move with it, provide a movement joint.
Start with the official material, because the online exam is open book and the hands-on test is judged on workmanship. Read the study materials that come with registration and note which content areas feel weakest.
Then use the topic table above. Work through the practice set that matches your weakest area, read every explanation including those for questions you got right, and write down the rule behind each miss. Return to the same set after a few days and see whether the rules stuck.
Give extra time to movement joints, substrates and grout and mortar, since these areas connect to many other questions. For safety and standards, practise finding the answer in your reference material quickly rather than memorising it, because you will have the book open during the online test.
Our questions are written by us with AI tools and are not real exam questions, so treat them as practice for understanding, not as a preview. In the final days, shift from reading to hands-on preparation: review tools, layout and cutting routines, and confirm the test logistics on the foundation's events page.
The online knowledge test has 155 questions, a mix of multiple choice and true/false. It is open book. You have 4 hours and must complete it in a single sitting. A separate hands-on test is also part of the certification, and the two results are combined into your final score.
A passing grade is 85% or higher. The hands-on evaluation sheets are tabulated and combined with your online exam score to produce the final result. The foundation says installers are notified within 7 business days.
The foundation says any installer with at least 2 years of experience as the lead installer setting tile full-time may take the exams. It recommends 3 to 5 years. The hands-on test is held at a regional warehouse and is listed for the US only.
Registration is $629 per installer. The foundation states it covers both the online and hands-on tests, along with the study materials. Retakes of one or both tests cost less. A $300 rescheduling fee applies if you do not give email notice 2 weeks before your test date.
Yes. The foundation allows you to retake one or both tests at a reduced cost, and the online portion can be taken at any time. Use your results and the content areas above to decide which topics to review before booking again.
No. The questions are written by us with AI tools and are meant to help you practise the topics in the official outline. They are not copied from the exam. Use the foundation's own study materials as the main source for what will be tested.
How we verify: editorial & fact-checking policy. Report an error: contact us.