Large-format tile is installed over a wavy substrate and the mockup shows lippage. What should be addressed?
Correct Answer
B) Flatness prep.
Large-format tile needs substrate preparation and layout control to reduce lippage.
Why This Is the Correct Answer
Large-format tile needs substrate preparation and layout control to reduce lippage.
Why the Other Options Are Wrong
Option A: Proceed with the finish work where large-format tile is installed over a wavy substrate and the mockup shows lippage, and accept the shortcut until final walkthrough.
Proceed with the finish work where large-format tile is installed over a wavy substrate and the mockup shows lippage, and accept the shortcut until final walkthrough. does not satisfy the required party, deadline, proof, license, bond, insurance, or agency trigger for tile substrate preparation.
Option C: Treat the item as a color or trim preference where large-format tile is installed over a wavy substrate and the mockup shows lippage, instead of stopping to repair the finish base condition.
Treat the item as a color or trim preference where large-format tile is installed over a wavy substrate and the mockup shows lippage, instead of stopping to repair the finish base condition. does not satisfy the required party, deadline, proof, license, bond, insurance, or agency trigger for tile substrate preparation.
Option D: Accept the installer's shortcut where large-format tile is installed over a wavy substrate and the mockup shows lippage, without correcting the product, backing, or clearance problem.
Accept the installer's shortcut where large-format tile is installed over a wavy substrate and the mockup shows lippage, without correcting the product, backing, or clearance problem. does not satisfy the required party, deadline, proof, license, bond, insurance, or agency trigger for tile substrate preparation.
Memory Technique
Reviewing Floor envelope: right person, right date, right contents.
Reference Hint
Study anchor (closed-book): memorize Tile substrate preparation from CSLB B General Building Study Guide; California Building Code, Title. / CSLB B General Building Study Guide tile substrate preparation; know the rule or calculation trigger without relying on exam-room lookup.
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