How to Tile a Shower the Right Way (Old Tile Out, New Tile In, Grout Kept Clean After)

A shower retile is really three jobs stacked on top of each other. Get the old tile off the wall without wrecking what’s underneath. Tile the new surface in the right order so it actually holds up to daily water. Keep the grout clean once it’s done so the whole thing still looks new in five years. Most guides only cover the middle piece. Here’s all three.

What You Need Before You Start

A grout saw or oscillating multitool for demo. Pry bar, wide chisel, safety glasses, gloves. A laser level or a 4-foot spirit level, a notched trowel sized to the tile (a 1/4-inch square notch for most wall tile, 1/2-inch for anything over 12 inches), a rubber grout float, tile spacers, and a wet saw for cuts. Membrane or cement backer board plus the fasteners and tape that go with whichever system you pick. Thinset, grout, and a bucket that stays dedicated to mixing, since dried thinset residue in a bucket contaminates the next batch.

Buy 10 to 15 percent more tile than the measured square footage. Cuts around drains, corners, and niches waste more than a straight wall ever does, and matching a discontinued dye lot six months later rarely goes well.

How to Remove Old Tile From a Shower Wall

Score the grout lines first with a grout saw or oscillating tool before anything gets pried. Skipping this step is how most DIY tile removal jobs end with cracked backer board that was never supposed to come out. A few passes along every joint frees each tile enough that a flat pry bar or a wide chisel can lift it clean, starting from a corner or an edge piece where there’s already a gap to work into.

Work top to bottom, one tile at a time, and expect some to come off in one piece and others to shatter. Both are fine. Wear eye protection and gloves regardless, since old tile edges are sharp and old thinset chips fly. A heat gun helps loosen stubborn mastic-set tiles that won’t budge with a pry bar alone, particularly on older installations from before thinset became standard.

Getting tiles off a wall without tearing through the drywall or backer board behind them comes down to angle. Pry outward and slightly upward, never straight in, and let the tool do the separating rather than forcing it. Once the tile field is off, the old thinset or mastic residue usually needs a separate scraping pass before that wall is ready for anything new. Check the substrate underneath for water damage at this point too. Soft, dark, or crumbling backer board means more than a tile problem, and it needs replacing before a single new tile goes up.

Planning the Layout Before a Single Tile Goes Up

Dry-lay a full row across the widest wall before any thinset gets mixed. This is where you catch a sliver of tile ending up right at the shower entrance or a grout line landing dead centre on the plumbing valve, both fixable now and both a headache once tile is set. Centre the layout so cut pieces at each end match, rather than a full tile on one side and a thin strip on the other.

Check every corner for square before committing to the layout, using the 3-4-5 method covered below. A shower stall built slightly out of true is common, and a layout planned around the assumption of a perfect box drifts visibly by the far wall.

How to Tile a Shower

Where do you start when tiling a shower wall? The back wall, and the second row up from the floor, not the first. Shower floors are rarely perfectly level, so starting your first row directly on the pan bakes that unevenness into every row above it. A laser level marks a true horizontal line partway up the wall, and that’s where the second row of tile begins. The first row gets cut to fit underneath once everything above it is set and true.

What goes behind the tile matters more than the tile itself. Cement backer board or a waterproof membrane system goes over the studs first, taped and sealed at every seam, then a waterproofing membrane or liquid coating goes over that. This layer is what actually keeps water out of the wall cavity. Tile and grout are not waterproof on their own. They’re a wear surface sitting on top of a system that does the real work, and skipping or shortcutting the membrane is the single most common reason a shower leaks two years after the “beautiful” retile.

Mix thinset to a peanut-butter consistency, not soup. Too wet and it slumps behind the tile with no real holding power. Comb it onto the wall in one direction with the flat side of the trowel, then rake it with the notched edge so every ridge stands the same height, and set the tile with a slight twisting press so the ridges collapse and spread flat behind it, not just squish down in the middle. Pull a piece back off every so often to check coverage. Anything under 80 percent contact on the back of the tile in a wet area is a callback waiting to happen.

The correct order to tile a shower runs: waterproof the walls and floor pan first, tile the walls from the second row up as described, cut and set the bottom row last, then tile the floor or pan surround, then grout everything once the tile has cured. Rushing grout in before the thinset sets fully is a shortcut that shows up as cracked or loose grout lines within a season.

What is the 3-4-5 rule for tiling and why does it matter? It’s a quick way to confirm a corner is a true 90 degrees using basic geometry, without a framing square. Measure 3 feet along one wall from the corner and 4 feet along the adjacent wall, mark both points, then measure the distance between those two marks. Exactly 5 feet means the corner is square. Off by even half an inch and your tile lines will visibly drift out of true by the far wall, which is exactly the kind of mistake that’s invisible on day one and glaring by week two.

Common shower tiling mistakes worth naming directly: starting the first row on an unlevel pan instead of using a laser line, skipping or rushing the waterproofing membrane, using the wrong thinset for the tile type (large-format porcelain needs a different mix than small ceramic), not backbuttering larger tiles, and grouting before the thinset has properly cured. Uneven grout lines from inconsistent spacers make the list too, though that one is cosmetic rather than structural.

Is it hard to tile a shower yourself? The cutting, setting, and spacing part isn’t the hard bit for a patient first-timer with the right tools. Waterproofing is where most DIY attempts go wrong, because a membrane mistake doesn’t show up until there’s already water damage behind the wall. A shower has zero room for a shortcut here in a way a kitchen backsplash simply doesn’t. That’s the real skill gap between a DIY job and one done by someone who’s waterproofed a hundred showers.

Choosing Shower Floor Tile That Doesn’t Turn Dangerous When Wet

Small-format tile, mosaic sheets under 2 inches a piece, is the standard pick for a shower floor, and not for looks. More grout lines per square foot means more traction underfoot, and the slight pitch a shower floor needs toward the drain is easier to build with small pieces than one big sheet fighting the slope. Look for a DCOF rating (dynamic coefficient of friction) of 0.42 or higher on any tile marketed for wet floors. A glossy 12×24 that looks sharp on a bathroom wall belongs nowhere near a shower pan.

How Long to Wait Before Using a Newly Tiled Shower

Thinset needs about 24 to 72 hours before it can take foot traffic, and grout needs its own cure window after that, both longer than the label suggests once the room is naturally damp. Central Vancouver Island runs sustained coastal humidity roughly eight months of the year, and that slows both thinset and grout cure compared to the dry-climate numbers most manufacturer charts are written for. Give a fresh shower retile a full week before regular use if the bathroom doesn’t have strong ventilation, closer to the label’s 72-hour minimum only if a fan or dehumidifier is running the whole time.

Caring for New Shower Tile After Install

Seal the grout once it’s fully cured, not before, since sealing over grout that hasn’t finished curing traps moisture underneath instead of keeping it out. Run a squeegee down the walls after every shower for the first few months while everything is still settling in. Skip anything acidic on natural stone thresholds or accents, vinegar and most bathroom sprays included, since acid etches stone finishes permanently in a way it doesn’t touch glazed ceramic or porcelain.

How to Clean Floor Tile Grout Without Scrubbing

Grout on a shower or bathroom floor stains faster than wall grout since it takes more direct foot traffic and standing water. A baking soda paste, left to sit for ten to fifteen minutes before a light wipe, lifts most everyday grime without a scrub brush at all. For deeper set-in dirt, a hydrogen peroxide and baking soda mix works the same way with more lifting power, still no scrubbing required if it’s given time to work first.

Steam cleaners handle floor tile grout well too, using heat and pressure instead of chemicals or elbow grease. Run one slowly over the grout lines and let the steam loosen grime before wiping it away. Sealed grout resists staining in the first place and cuts down how often any of this needs doing, so resealing every twelve to eighteen months on a floor that sees regular water is worth the twenty minutes it takes.

How to Get Tiles Off a Wall Without Damaging What’s Behind It

The same scoring-and-prying method covered above applies to any wall tile removal, not just a shower. Take tiles off in small sections rather than trying to pry a whole row at once, and keep checking the wall behind as you go. A wall that’s been tiled for decades sometimes has plaster rather than drywall behind it, and plaster needs a gentler touch and more patience than drywall does, since it cracks wider and doesn’t patch as cleanly.

Frequently Asked Questions

What are common shower tiling mistakes?

Starting the first row on an unlevel pan, rushing or skipping the waterproof membrane, using the wrong thinset, and grouting before the thinset cures. The membrane mistake is the one that actually causes damage.

What is the correct order to tile a shower?

Waterproof first, tile the walls from the second row up, cut the bottom row to fit last, tile the floor or pan surround, then grout once everything has cured.

Is it easy to tile a shower yourself?

The tiling is manageable for a patient DIYer. Waterproofing is where most self-installed showers fail, since a membrane gap doesn’t show up until there’s already water behind the wall.

What do you put on shower walls before tiling?

Cement backer board or a waterproof panel system, taped and sealed at the seams, then a waterproofing membrane or liquid coating over that. This layer is what keeps the wall cavity dry, not the tile itself.

What is the 3/4/5 rule for tiling and why is it important?

A geometry check for square corners: 3 feet one way, 4 feet the other, a 5-foot diagonal between the marks confirms 90 degrees. Off by half an inch and the tile lines drift visibly by the far wall.

How long should I wait before using a new shower?

At least 24 to 72 hours for the thinset, longer if the bathroom runs damp. On central Vancouver Island’s humid months, a full week is the safer call unless a fan is running the whole time.

A retile is one of those jobs where the parts nobody sees, the membrane, the substrate check, the cure time before grouting, decide whether it lasts twenty years or leaks behind the wall in two. Water staining on the backer board once the old tile’s off, or a bathroom corner that isn’t reading square on a first check, is worth a second set of eyes before the new tile goes over a problem that’s still there. Our bathroom tile assessment catches what a DIY walkthrough usually misses, and for the floor itself, our shower floor tile install gets the pitch toward the drain right the first time. Reach out through our contact page before that new tile goes over a problem that’s still there.

Related Questions

• How to Remove Grout from Tiles?
• How Do You Remove Tile?
• How to Re Grout a Tile Floor?
• Can Tiles Get Wet?

Jordan Tile & Stone

Tile installation and repair across central Vancouver Island: Campbell River, Courtenay, Comox, Oyster Bay, Nanoose Bay, Parksville, Qualicum Beach and Nanaimo.

Phone: (250) 201-3891
Hours: Monday to Sunday, 7:00 am to 6:00 pm
Address: 4423 Patricia Rd, Oyster Bay, BC V9H 1B8