CTI Study Guide 2026
Everything you need to pass the CTI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CTI Exam Format at a Glance
📚 CTI Topics to Study (37)
✍️ Sample CTI Questions & Answers
1. What is the significance of peer review in quality control & inspection methods for CTI professionals?
Peer review promotes accountability, knowledge sharing, and quality improvement by allowing CTI professionals to benefit from collective expertise and identify areas for growth.
2. When floating a mortar bed (mud bed) for a floor, what is the typical thickness range?
A conventional mortar bed (mud set) for floors is typically floated to a thickness of 3/4 inch to 1-1/4 inches.
3. When installing exterior tile on a deck, why must the tile surface be sloped?
Exterior deck tile must slope a minimum of 1/4" per foot toward drains or edges to prevent water from pooling, which causes freeze-thaw damage and mortar failure.
4. What is the maximum allowable variation in substrate flatness for tiles with any edge greater than 15 inches, per ANSI A108.02?
ANSI A108.02 requires surfaces receiving tile with edges over 15" to be flat within 3/16" in 10 feet and 1/8" in any 2-foot span to minimize lippage.
5. What is a primary advantage of using a medium-bed mortar over standard thin-set?
Medium-bed mortars are formulated to support large/heavy tiles at greater mortar depths (up to 3/4 inch) without slumping.
6. What is the primary purpose of quality control & inspection methods in the context of Certified Tile Installer?
Quality Control & Inspection Methods in Certified Tile Installer primarily ensures consistent quality and professional accountability, forming the foundation of competent practice in this field.