Tile prep checklist

Everything to get right before the first tile: a flat, solid base, waterproofing where it is wet, layout and materials.

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Tile prep checklist

koira.ai/checklists/tile-install-prep-checklist
Substrate
Waterproofing
Layout
Materials

What this checklist covers

Most tile failures start under the tile: a floor that flexes, a wall that is not flat, or a shower that was never waterproofed right. Follow the tile, setting material and membrane makers' instructions; this list makes sure each one gets checked.

How to use it

Tick each item as you go. The sheet saves in this browser, so you can close the page and come back. Print a blank copy for the truck, or fill it in on your phone and print or save it as a PDF for the customer at the end.

With Koira: Estimates and change orders

Anything the walkthrough turns up that is outside the scope goes on a new estimate, signed on the customer's phone before you do it. Koira keeps the original, the change and the photos together on the job.

Last checked October 9, 2026. This page is general information, not legal or tax advice. Rules change and differ by state and city, so confirm with the agency named before you act.

FAQ

What should be checked before tiling?

Flatness, stiffness, the backer or membrane, waterproofing in wet areas, layout and materials.

Should a shower be flood tested?

Yes, before tile, so any leak shows while it is easy to fix.

Why plan movement joints?

Tile needs room to move at walls and changes of plane.

Why buy tile from one lot?

Color can vary between lots.

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Tile Installation Prep Checklist: Substrate and Waterproofing | Koira