They are waterproof in that you can get the top as wet as you want. They are not waterproof in that they will keep water off your floor, nor will said water not affect the bond to the floor. These tiles may be able to last sitting in water but they will not keep water from getting underneath. Your only options are really one sheet of vinyl or tile (could I guess use a membrane).

If you install these right though I would bet that 99% of the water (given you don't just let an inch of standing water sit) will never meet your subfloor. No caulk is needed, just make sure that all of the edges are tight and clicked into place. To keep your bathroom better suited for a kid you may want to make sure baseboard are sitting right on these and caulk between baseboard and tile.

Answer from DMoore on Stack Exchange
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The Home Depot
homedepot.com › flooring › vinyl flooring
Peel and Stick - Waterproof - Vinyl Flooring - The Home Depot
Flooring and Tile Look · Water Protection · Installation Method · Features · Brand · In Stock at Store Today · Sort byTop Sellers · Installation Method:Peel and Stick · Water Protection:WaterproofClear All · (4 / 10) Model# PSFT-STR-16 · $6.91 · /sq.
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FloorPops
wallpops.com › floor decor
Peel and Stick Floor Tiles | FloorPops®
Estate Peel and Stick Floor Tiles contains 10 pieces on 10 sheets that measure 12 x 12 inches. This product measures 60in x 24in x 0.06in when assembled. ... Bring a bold monochromatic look to your laundry room, kitchen, bathroom floors, and more with the Hudson peel and stick floor tiles.
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Lowe's
lowes.com › flooring › vinyl flooring › vinyl tile
Waterproof Peel and stick Vinyl Tile at Lowes.com
Evaluate Room Conditions: Select waterproof tile for kitchens and bathrooms or thicker wear layers for high-traffic areas. Compare Styles: Vinyl tile options include traditional designs or premium luxury vinyl tile for enhanced texture and depth. Check Installation Type: Choose from peel-and-stick tile or click-lock and glue-down systems based on skill level and subfloor type.
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Wayfair
wayfair.com › home improvement › flooring, walls & ceiling › flooring › vinyl flooring
Peel & Stick Water-resistant Vinyl Flooring You'll Love | Wayfair
These retro self-adhesive peel-and-stick vinyl floor tiles imitate expensive hand-painted retro tiles but without the expensive cost or the mess. These beautifully designed tiles recreate fresh and inviting patterns that will look stunning in any room in the home. They are a great way to add color and patterns to your kitchen, foyer, bathroom, or laundry.
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Amazon
amazon.com › stores › Livelynine › page › 1AD0DBAA-5226-413D-AB1E-EEFA94D15AE6
Amazon.com: Livelynine: Thick peel & stick floor tiles
Livelynine Grey and White Peel and Stick Floor Tile Marble Vinyl Flooring Peel and Stick Tiles For Floor Waterproof Laminate Flooring for Bathroom Kitchen Flooring Removable Linoleum 12X12 Inch 4-Pack
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Commomy
commomy.com › collections › peel-and-stick-vinyl-floor-tile-sticker
Waterproof Peel and Stick Floor Tile Stickers – Commomy
Commomy waterproof peel and stick floor tile stickers, they're a great way to add color and pattern to your floor, wall, counter, Backsplash, windows, stairs, kitchen, foyer, bathroom or laundry room.
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Yipscazo Tiles
yipscazotile.com › blogs › installtion › how-to-waterproof-your-bathroom-with-peel-and-stick-flooring
How to Waterproof Your Bathroom with Peel and Stick Flooring – Yipscazo Tiles
Tic Tac Tiles specializes in 3D imitation tiles that create dimensional effects, but they work best in less wet areas. Yipscazo offers PVC peel and stick tiles with waterproof certification, suitable for high-moisture environments.
Find elsewhere
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Better Homes & Gardens
bhg.com › home-improvement › flooring › types › peel-and-stick-floor-tiles
These Gorgeous Peel-and-Stick Floor Tiles Make Your Floors Look New for Less
August 6, 2025 - Made of heavy vinyl and waterproof material, these peel-and-stick tiles are perfect for beginners who want an option with easy installation that's also thick enough to withstand any foot traffic, ideal for homes with one bathroom that gets plenty ...
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Amazon
amazon.com › Waterproof-Bathroom-Vinyl-Peel-Stick-Tiles › s
Amazon.com: Waterproof Bathroom Vinyl Peel And Stick Tiles
Transform your bathroom with waterproof, peel-and-stick vinyl tiles. Easy DIY installation, moisture-resistant, and available in a variety of designs.
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Amazon
amazon.ca › CHICHOME-32-Pack-Peel-Stick-Floor › dp › B09787ZKNX
CHICHOME 32-Pack Peel & Stick 12''x12'' Light Black Marble Vinyl Floor Tiles - Waterproof, Durable, Self-Adhesive Vinyl Sticker Tiles for Bedroom, Kitchen, Bathroom, Vinyl Flooring - Amazon Canada
CHICHOME 32-Pack Peel & Stick 12''x12'' Light Black Marble Vinyl Floor Tiles - Waterproof, Durable, Self-Adhesive Vinyl Sticker Tiles for Bedroom, Kitchen, Bathroom in Vinyl Flooring.
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The Home Depot
homedepot.com › flooring › vinyl flooring
Peel and Stick - Water Resistant - Vinyl Flooring - The Home Depot
Get free shipping on qualified Water Resistant, Peel and Stick Vinyl Flooring products or Buy Online Pick Up in Store today in the Flooring Department.
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Homedepot.ca
homedepot.ca › floors › vinyl flooring › vinyl tile
Water Resistant Vinyl Tile - Homedepot.ca
Renovate bathrooms, kitchens, bedrooms, offices, and family rooms with quality alternative and durable floor tile.See less - ... Effortlessly chic, this modern geometric design features a timeless color palette. Black and white hues combine to create a small diamond pattern that will make a big impact in any space. Fleur Peel and Stick ...
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JustAnswer
justanswer.com › home-improvement › evxm6-peel-stick-vinyl-tiles-trying-decide.html
Peel and Stick Vinyl Tiles: Durability & Water Safety Guide
Water infiltration typically occurs at seams or edges where adhesive weakens. To prevent peeling, ensure subfloor is moisture-free and use a high-quality primer. Seal tile edges with waterproof sealant in wet areas like kitchens and bathrooms.
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Walmart
walmart.com › home improvement
Waterproof Bathroom Flooring
$7.75Was $7.75Interlocking Slip-Resistant Bathroom Mat | Waterproof Modular Tile | Fast-Drying PVC with Drainage Holes | Non-Slip Floor Cover | Indoor Outdoor Use | 30x30x1.5cm | Dark Gray/White/Gray/Blue · (2 pack) Abyssaly 35.8" x 5.9" 10 Pcs Wood Vinyl Flooring Tile Peel and Stick Floor Tile Self Adhesive Bathroom Floor Tiles Waterproof Thick Removable Flooring Tiles
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Amazon
amazon.ca › Stick-Floor-Tiles › s
Amazon.ca: Stick On Floor Tiles
FloorPops 12-in by 12-in Blue Ezra Vinyl Peel & Stick Floor Tiles (10 Tiles), (10 sq.ft./Carton) · FloorPops 12-in by 12-in Yellow Ezra Vinyl Peel & Stick Floor Tiles (10 Tiles), (10 sq.ft./Carton) · FloorPops 12-in by 12-in Pink Daphne Vinyl Peel & Stick Floor Tiles (10 Tiles), (10 sq.ft./Carton)
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Walmart
walmart.ca › home
Peel Stick Tiles | Walmart Canada
DutchmanWaterproof Self-Adhesive Wall Tile, Glossy Vinyl Tile Sticker for Kitchen and Bathroom, Peel and Stick, Easy to Clean and Wear-resistant Surface ... Waterproof Tile Sticker, 18pcs 10cmx10cm Mosaic Tile Transfer Stickers Peel And Stick Tile, For Bathroom Kitchen DIY Home Bathroom Tiles
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Today's Homeowner
todayshomeowner.com › flooring › guides › best peel-and-stick floor tiles: a comprehensive guide
Best Peel-and-Stick Floor Tiles: A Comprehensive Guide (2025) | Today's Homeowner
March 26, 2025 - Ceramic and porcelain peel-and-stick tiles offer the best durability but come with a higher price tag than vinyl options. These tiles are waterproof, scratch-resistant, and stain-proof, making them perfect for high-traffic areas like kitchens ...