After working on bathroom remodels across Greenville, SC and Charlotte, NC, we've seen the same problems appear on job after job — not because homeowners are careless, but because bathroom renovation involves a specific body of knowledge that most people only need once or twice in a lifetime. By the time you learn what to watch out for, the project is already done.

This article is the version of that knowledge you can use before you start. It covers the planning errors that inflate budgets, the tile choices that cause failures, the waterproofing shortcuts that lead to rot, the design decisions homeowners regret, and the contractor red flags that should make you walk away. We've written it the way we'd explain it to a client sitting across the table from us — directly and with enough detail to actually be useful.

Planning Mistakes That Create Problems Before Demo Even Starts

Most bathroom remodel problems are set in motion before a single tile is removed. The decisions you make in the planning phase — or skip making — determine whether the project runs smoothly or surprises you at every turn.

Not Pulling a Permit

Homeowners skip permits for two reasons: they don't want to pay the fee, or they don't want inspectors slowing things down. Neither reason holds up against the real consequences.

In South Carolina and North Carolina, bathroom renovations that involve moving or modifying plumbing, electrical, or structural elements require permits. A licensed contractor will know exactly what your project requires. When work is done without a permit and you go to sell the house, it surfaces during inspection — and you'll either have to open walls to demonstrate compliance or disclose unpermitted work, which affects your negotiating position.

Beyond the sale-related headaches, permits exist because inspections catch real problems. An inspector reviewing rough-in plumbing before tile goes up might catch a drain slope that will cause standing water for the next twenty years. That's the system working.

If a contractor tells you permits aren't necessary for work that clearly requires them, or suggests doing the job "permit-free" to save time, that's a red flag — not a convenience.

Moving Plumbing Without Understanding the Full Cost

Relocating a toilet, shower drain, or vanity requires opening the floor and possibly the ceiling in the room below. The rough-in work itself — cutting into the slab or subfloor, repositioning the drain, adjusting vent stacks — is not cheap, and it extends the timeline. In a slab-on-grade home, moving a drain requires concrete saw cutting and patching, which adds both cost and drying time before tile can go down.

The mistake isn't wanting to move plumbing. Sometimes the existing layout genuinely doesn't work. The mistake is not budgeting for it accurately. We regularly see homeowners who priced out a bathroom remodel from a contractor who assumed existing plumbing locations, then added a $3,000 to $6,000 surprise when they decided mid-project to shift the shower drain two feet.

If moving plumbing is part of your vision, price it explicitly before committing to a number. And consider whether the layout improvement is worth the added cost — sometimes a different approach to the design achieves the same result without touching the drain.

Underestimating Scope

"I just want to retile the shower" is one of the most common projects we get called for — and it almost never stays that simple once the old tile comes off.

Behind the old tile, we commonly find: rotted cement board from a waterproofing failure, compromised framing at the base of the walls, a shower pan liner that failed years ago and has been slowly wicking moisture into the subfloor, or original drywall that was used as a substrate (which was never appropriate for a wet area). We can't see any of that until demo is done.

This doesn't mean every retile project turns into a full gut renovation. But it means the contingency budget is not optional, and anyone who tells you otherwise either hasn't done this work long enough or isn't being straight with you.

A realistic scope conversation includes: what we expect to find, what we'd do if we find it, and what it would cost. That conversation should happen before work starts.

Not Having a Contingency Budget

Every bathroom remodel budget should include a contingency — typically 15 to 20 percent of the total project cost. Not because we expect things to go wrong, but because bathroom walls have been closed for years or decades, and what's behind them is unknown until they're open.

The contingency isn't "extra money to spend." It's insurance against the discoveries that are genuinely not foreseeable. If you don't use it, you come out ahead. If you need it, it's there.

Homeowners who skip the contingency and then encounter unexpected rot, bad plumbing, or knob-and-tube wiring have three bad choices: pause the project, take on debt to cover the overrun, or cut something from the original plan to absorb the cost. None of those outcomes is good.

Budget Mistakes That Cost More Than They Save

Using a Tile Allowance That Doesn't Reflect What You Actually Want

Some contractors bid jobs with a "tile allowance" — a placeholder number representing what the tile will cost. This simplifies the bid and lets the contractor put a number on paper before you've selected materials. It also creates a trap.

If the allowance is $3 per square foot and you're going to a tile showroom and falling in love with $12 per square foot porcelain, the difference comes out of your pocket on top of the accepted bid. Multiply that by 150 square feet of shower wall and floor, and an allowance that sounded reasonable becomes a $1,350 line item you didn't plan for.

Before you accept any bid with a tile allowance, go to a tile showroom first. Get a realistic sense of what you're going to spend on materials at the selections you're actually drawn to. Then compare that number to the allowance in the bid. If they don't match, the bid doesn't reflect your real project cost.

Ignoring Demo and Disposal Costs

Demolition isn't free. Removing existing tile, backer board, drywall, a tub surround, or a fiberglass shower unit takes labor — and hauling away the debris costs money too.

In a full bathroom gut renovation, demo can represent a meaningful portion of the total labor budget. In bids that don't break out labor by phase, demo costs are sometimes underrepresented or absorbed into a lump sum that doesn't hold up once the project starts.

Ask your contractor to break out the demo and disposal cost explicitly. If you're doing a partial renovation — replacing just the shower tile but keeping the vanity and toilet — make sure the scope of demo is clearly defined so there are no disputes about what was included.

Paying More Than 30 Percent Upfront

A deposit is normal and reasonable. Contractors have material costs to cover and need some financial commitment from the client before mobilizing.

But paying 50 percent or more upfront is a different situation. It shifts financial leverage entirely to the contractor before the work is done, and it's disproportionate to the cost structure of the job — tile doesn't need to be ordered months in advance, and most materials are purchased in the week before installation begins.

The standard structure is a deposit at signing (typically 25 to 33 percent), a draw at a defined midpoint milestone, and the balance on completion. If a contractor asks for more than a third upfront without a clear reason — like an unusually long lead time on a special-order item — that's worth a direct conversation before you agree.

Tile Selection Mistakes That Lead to Failures and Regrets

Using the Wrong Tile in Wet Zones

Not every tile is appropriate for every location. Two ratings determine whether a tile belongs in a wet or high-traffic area: PEI rating (Porcelain Enamel Institute) for abrasion resistance, and DCOF (Dynamic Coefficient of Friction) for slip resistance.

For floor tile in a bathroom, the DCOF rating must meet a minimum of 0.42 for wet conditions. Polished marble, high-gloss porcelain, and some natural stones fall below this threshold — they're beautiful and appropriate for walls, but putting them on a wet shower floor or bathroom floor is a slip hazard.

PEI ratings run from 1 (no foot traffic) to 5 (heavy commercial). For residential bathroom floors, you want PEI 3 at minimum, and PEI 4 for higher-traffic situations. Wall-only tiles are often PEI 1 or 2 — they're not engineered to take foot traffic, and they'll chip or crack underfoot over time.

We cover tile selection by application in detail in our guide to choosing the best tile for your bathroom. The short version: always confirm ratings before ordering, and when in doubt, ask the tile supplier for the technical data sheet.

Skipping Expansion Joints

Tile expands and contracts with temperature changes. A continuous tile installation with no expansion joints has nowhere to go when that movement occurs — so it creates its own relief, usually in the form of grout cracking, tiles popping loose, or tiles cracking at the corners.

Expansion joints — typically filled with flexible caulk rather than grout — are required at changes of plane (where the floor meets the wall), at any inside corner, and in field tile runs exceeding a certain length. These joints are specified in industry standards from the Tile Council of North America (TCNA) and are not optional.

In a wet environment like a shower, the caulk in these joints does double duty: it allows for movement and it keeps water out of a seam that grout alone cannot seal permanently. Grout in a corner will crack within a few years. Properly applied, color-matched caulk maintains flexibility and adhesion.

If you see grout in the corners of a newly finished shower, that's either a mistake or a sign that the installer doesn't follow current standards. Either way, it will need to be redone.

Not Ordering Enough Tile

The standard rule is to order 10 percent more tile than your square footage calculation to account for cuts and breakage. That's a reasonable baseline for a straightforward layout with straight cuts.

For diagonal patterns, herringbone, chevron, or any design that requires many angled cuts, the waste factor jumps to 15 or even 20 percent. More cuts mean more broken pieces and more material consumed getting from the room's dimensions to the pattern's geometry.

The consequence of under-ordering isn't just running out of tile mid-installation. Tile is manufactured in dye lots, and even the same SKU from the same manufacturer can have visible color variation between production runs. If you run short and the next order comes from a different dye lot, the mismatch may be subtle but visible — especially in a smaller room where you'll notice it every day.

Order enough, keep extras, and don't return the leftovers. You'll thank yourself in five years when you need to replace a cracked tile.

Using Cheap Grout or Grouting Without the Right Technique

Grout is not interchangeable. The type of grout — sanded, unsanded, epoxy, urethane — depends on your joint width, the tile material, and the conditions the joint will face.

For grout joints under 1/8 inch, unsanded grout is standard. Sanded grout in narrow joints can scratch polished tile surfaces. For joints exposed to heavy moisture or staining, epoxy or urethane grouts outperform traditional cement-based products dramatically in both stain resistance and durability — though they require more skill to apply.

Beyond grout type, technique matters. The most common DIY grouting mistake is applying grout when the thinset beneath the tile hasn't fully cured — typically 24 hours minimum, longer in cool or humid conditions. Grouting too early can disturb tile alignment and compromise adhesion. The second most common mistake is using too much water when cleaning grout off the tile surface, which dilutes the grout in the joint and produces a weak, hazy finish.

Skipping Grout Sealer on Cement-Based Grout

Cement-based grout is porous. Unsealed grout in a shower or bathroom floor will absorb water, soap scum, and mold spores. Over time, it stains, discolors, and becomes increasingly difficult to clean.

Sealing grout is a simple step done after installation and allowed cure time — typically 72 hours for cement-based grout before sealing. The sealer penetrates the grout and reduces porosity without changing the appearance.

Epoxy and urethane grouts don't require sealing, which is one of their practical advantages in wet areas. If you've selected a traditional cement-based grout, sealing isn't optional maintenance — it's completing the installation correctly.

Waterproofing Mistakes That Lead to Rot, Mold, and Total Failure

Using Regular Drywall Behind Tile in Wet Zones

Standard drywall has no place in a wet area. Neither does standard "greenboard" moisture-resistant drywall, which is resistant to incidental splashes but is not an appropriate substrate for tiled shower walls.

The correct substrate for a tiled shower is cement board, foam backer board, or a waterproof panel system designed for tile installation in continuously wet conditions. These materials don't deteriorate when exposed to moisture — which is the entire point, given that moisture will always find its way behind tile eventually.

We regularly demo showers and pull off tile to find original drywall that has been wet for years. The gypsum core is saturated, the paper facing has delaminated, and the framing behind it has mold. The tile and grout looked fine from the outside until they didn't. By then, the repair is far more extensive than a re-tile.

Skipping the Waterproofing Membrane Entirely

The waterproofing membrane is the system that actually keeps water out of the wall assembly. Tile and grout are not waterproof — they're a finish surface. Water moves through grout, through microscopic cracks that develop as buildings settle, and around every fixture penetration.

Our detailed guide to shower waterproofing covers membrane types, application methods, and what to look for when evaluating a contractor's approach. The short version: a modern shower requires a dedicated waterproofing layer — liquid-applied membrane, sheet membrane, or a foam backer system with integrated waterproofing — applied before tile goes up.

An installer who sets tile directly over cement board without a waterproofing membrane has built a shower that will fail. It might take five years or fifteen, but it will fail. The moisture will find the path behind the tile, and the damage will be extensive by the time it's visible.

Improper Waterproofing at Niches and Penetrations

A recessed niche in a shower wall is a pocket that collects water every time someone showers. The back, sides, and floor of that niche need waterproofing that is just as thorough as the rest of the shower — arguably more so, because the niche is lower on the wall and water pools at the shelf surface.

We've seen niches waterproofed only on the back wall, leaving the side panels exposed. We've seen niches framed with drywall while the rest of the shower was built correctly. We've seen niche waterproofing that was applied and then compromised when the installer cut into it to set the niche frame.

The same principle applies to every penetration through the waterproofing membrane: the valve body, the shower arm, the diverter, the niche. Each penetration is a potential breach, and each one needs to be properly integrated with the membrane so that water can't find a path around it.

If you're having a shower built and you want to confirm the waterproofing is being done correctly, ask your contractor to show you the membrane before tile goes up. A contractor who does this work right won't hesitate — they'll want you to see it.

Choosing the Lowest Bidder Who Skips Waterproofing

Waterproofing materials and the labor to apply them correctly add cost to a shower installation. That cost doesn't show on a finished shower — you can't see the membrane through the tile. This creates an obvious incentive for cost-cutting: skip the membrane, skip the labor, reduce the bid.

We've seen this across both markets we serve. A homeowner gets three bids, one of which is significantly lower than the others. The low bid wins. The installer sets tile on cement board with no membrane, everything looks great for a year or two, and then the damage begins.

The only way to protect yourself is to ask explicitly what waterproofing system will be used, and to get the answer in writing in the contract. "Waterproofing" should be specified by product name and application method — not described in vague terms like "we seal everything."

Layout and Design Mistakes That You'll Notice Every Day

Not Centering the Tile Layout

A tile layout that starts from one wall and works across the room will almost certainly end with an odd cut at the opposite wall. If that cut is less than half a tile wide, it looks like an afterthought — because it is one.

Proper tile layout starts by finding the center of the visual field, dry-laying tile from that center point to understand where cuts will fall, and adjusting the layout so that cuts at opposite walls are equal and at least half a tile wide. This is especially important in a shower, where the eye naturally centers on the back wall and any off-center layout is immediately noticeable.

The same principle applies to floor tile. A floor that is centered looks intentional. A floor that starts from one wall and runs to the other looks like it was installed without planning.

Layout planning takes time before the first tile goes down. It saves the embarrassment of tearing out an off-center installation — or living with one.

Not Planning Patterns Before Cutting

Complex patterns — herringbone, chevron, offset, diagonal — require planning before you cut the first tile. The relationship between the pattern, the room dimensions, and the starting point determines where cuts fall and whether the overall effect looks balanced.

Laying out the pattern dry — without adhesive — and photographing or marking it before installation begins is not optional for any non-standard layout. Experienced tile setters do this routinely. Shortcuts in the planning phase consistently produce patterns that don't line up at the center, don't balance at the edges, or shift off-axis partway through the installation.

If you're requesting a complex pattern, discuss the dry layout process with your contractor before installation begins.

Not Accounting for Transitions to Adjacent Flooring

The threshold between your bathroom floor and the hallway or bedroom floor is a detail that shows. A thoughtless transition — tile that ends abruptly with a thick metal strip, height differences that create a trip hazard, or materials that visually clash — detracts from an otherwise well-executed renovation.

Transitions need to be planned before tile is ordered. The height of the tile plus the thinset bed, relative to the existing floor height in adjacent rooms, determines what transition hardware you need and whether any underlayment adjustments are required. If the bathroom floor is being raised by adding a new substrate layer, the transition arithmetic changes.

Metal transition strips work fine functionally. A better approach — when the height difference allows — is a tile threshold that continues the floor material for a few inches into the adjacent space, or a natural stone saddle that bridges the two floors. These details cost almost nothing extra when planned in advance and look significantly better.

Choosing Glossy Tile for the Floor

Polished and high-gloss floor tile looks striking on a showroom floor and becomes a maintenance problem in your bathroom within weeks of installation. Every water droplet, soap smear, and footprint shows. Grout lines are visible even when clean. The surface shows scratches over time.

Beyond appearance, polished floor tile in a wet area is a slip hazard. As noted above, DCOF ratings for wet areas require a minimum of 0.42. Many polished tiles — natural stone, high-gloss porcelain — don't meet that threshold.

Matte, honed, and textured tile finishes outperform polished tile in every practical category for bathroom floors: easier to keep clean, safer when wet, and they don't show every mark. Save the glossy or polished finish for walls, where it picks up light beautifully and handles none of the slip-and-maintenance issues.

A bathroom should hold up stylistically for at least a decade, because remodeling again in five years is expensive. Some tile selections and design choices age well. Others announce very clearly when they were installed.

Highly specific trend-driven choices — a particular color palette that's everywhere right now, a pattern that's having a cultural moment, a material that's appearing in every design magazine simultaneously — can feel dated faster than classic selections. We've seen avocado green tile in the 1970s and gray-everything in the 2010s. Both had their moment. Both date the room.

The choices that hold up over time: natural materials (stone, wood-look porcelain), neutral palettes with contrast built in, classic formats (subway, large-format field tile), and quality fixtures in finishes that have been around for decades. You can add personality through accessories and textiles that are easy to change. The tile should be something you'll still like in fifteen years.

Ventilation Mistakes That Cause Moisture Damage

Installing an Undersized Exhaust Fan

Exhaust fan sizing is determined by cubic feet per minute (CFM) of air movement relative to the bathroom's volume. A fan that's too small for the room doesn't remove enough moisture, which means that moisture stays in the air, condenses on cool surfaces, and accumulates in the wall cavities over time.

The general rule is 1 CFM per square foot of bathroom area, with a minimum of 50 CFM for any bathroom. For bathrooms larger than 100 square feet, calculate by cubic footage: room volume divided by 7.5 gives the CFM required.

In practice, we see undersized fans constantly — especially in older homes where a small fan was installed when the home was built and never replaced. If your bathroom fan sounds like it's running but the mirror stays fogged for 20 minutes after a shower, the fan is either undersized, failing, or both.

When replacing a fan as part of a renovation, go slightly above the calculated minimum. A 110 CFM fan in a bathroom that needs 80 CFM costs almost nothing extra and runs quieter relative to its output.

Venting the Fan Into the Attic Instead of Outside

This is more common than it should be, and it causes real damage. Some installers or handymen duct bathroom exhaust into the attic space rather than running the duct to an exterior wall or roof cap. It's faster and cheaper to install. It's also wrong.

Hot, moist bathroom air vented into an attic creates exactly the conditions that promote mold and rot in the roof structure. Attic insulation absorbs the moisture, mold develops, and the damage builds silently for years. In cold climates, the moisture also condenses on cold attic surfaces and can freeze and thaw repeatedly, damaging the structure.

Bathroom exhaust must terminate outside the building envelope — through the roof, through a soffit (carefully, to avoid drawing air back in), or through an exterior wall. If you're unsure where your existing fan vents to, it's worth checking during any renovation.

Not Including a Fan in the Shower Area

A single ceiling fan on the opposite side of the bathroom from the shower may not create enough air movement to effectively exhaust the moisture generated directly in the shower. In larger bathrooms, or in any bathroom where the shower is enclosed, a dedicated exhaust point within or directly above the shower significantly improves moisture control.

Some building codes now require exhaust ventilation in shower enclosures specifically. A waterproof-rated exhaust fan designed for wet locations can be installed directly in the shower ceiling — these are not standard bath fans and must be rated for the application.

Lighting Mistakes That Make the Space Harder to Use

Relying on a Single Overhead Light

A single overhead fixture in a bathroom creates shadows exactly where you don't want them: on your face at the mirror. The light comes from above and behind, which shadows the eyes, nose, and chin. The result is poor visibility for grooming tasks regardless of how bright the fixture is.

The fix is side-mounted lighting at the mirror — sconces flanking the vanity mirror, or a light bar that runs along both sides. Vertical fixtures mounted at face height on either side of the mirror provide even, shadow-free illumination at the face. This is how dressing rooms, green rooms, and professional makeup areas are lit, because it works.

A well-lit bathroom vanity typically has both overhead general illumination and dedicated task lighting at the mirror. The overhead light doesn't need to be directly above the vanity — it fills the room, while the vanity fixtures do the work for tasks.

Not Installing a Dimmer

A bathroom at 2 a.m. should not require sunglasses. A bathroom being used for a bath at the end of a long day should be able to feel different from one being used for morning preparation. A dimmer switch costs very little and adds both function and atmosphere to a space.

Dimmer compatibility depends on fixture type — LED fixtures in particular need to be matched with compatible dimmers to avoid flickering or buzzing. This is an easy detail to confirm at selection time and a frustrating one to correct after installation.

If you're doing a full renovation, dimmers on all bathroom lighting circuits is a standard upgrade that takes no additional planning.

No Dedicated Shower Light

A shower without its own light source is dim by design. If your bathroom has good ambient lighting, the shower interior still depends on whatever light makes it past the glass door or curtain — which isn't much.

A recessed, wet-location-rated shower light changes the shower from a dim enclosure to a properly lit space. The fixture type matters: only fixtures specifically rated for wet locations belong inside a shower enclosure. These are listed with an IP rating that indicates water resistance.

If your renovation includes shower glass or a heavily enclosed shower design, the absence of a dedicated shower light will be noticeable from the first use.

Fixture Mistakes That Cause Expensive Problems

Buying Fixtures Before Confirming Rough-In Dimensions

A toilet's rough-in dimension is the distance from the finished wall behind it to the center of the drain. Standard rough-in is 12 inches. Older homes sometimes have 10-inch or 14-inch rough-ins. If you buy a toilet with a 12-inch rough-in for a space that has a 10-inch rough-in, it won't fit against the wall correctly.

The same principle applies to shower valve rough-in depth, faucet hole spacing on a vanity, and the center-to-center dimensions on any pre-drilled fixture. Measure the rough-in before purchasing fixtures. Confirm dimensions with your plumber before ordering anything that has specific dimensional requirements.

This mistake is expensive in a specific way: you've already paid for the fixture, the plumber's time to install it is booked, and you discover the problem on installation day. Returning fixtures, especially custom or special-order items, isn't always possible, and the delay affects the entire project timeline.

Installing Cheap Valves

The shower valve is the working mechanical component of a shower system. It's installed behind the tile, surrounded by mud and membrane and then covered permanently. To replace it in the future requires removing tile.

A shower valve that fails after ten years — leaking internally, losing pressure balance function, becoming difficult to operate — means tearing into tile to replace it. The cost of a quality valve at the time of installation is orders of magnitude less than the cost of accessing it through finished tile.

Specify pressure-balancing valves at minimum (required by code in most jurisdictions to prevent scalding from toilet flushes). Thermostatic valves offer more precise temperature control and are worth the upgrade in a primary shower. Don't cut costs on the component that lives behind the wall forever.

Wrong Drain Placement

The drain in a tile shower floor must be at the low point, and the floor must slope toward it — typically 1/4 inch drop per linear foot. If the drain is placed in the wrong location relative to the actual shower floor geometry, the slope can't be established correctly, and water won't drain.

Linear drains at one end of the shower require the entire floor to slope in one direction. Center drains require a four-way slope toward the center. Point drains in a corner require a different slope geometry. These are not details to resolve during installation — they're part of the design, and the drain placement must be established before rough-in plumbing is set.

Changing a drain location after rough-in plumbing is set requires re-opening the floor. Address it in the design phase.

Contractor Hiring Mistakes That Leave You With No Recourse

No Written Contract With Defined Scope

A verbal agreement about what the contractor will do is not protection. Memories differ, scope creep happens, and without a written contract, disputes about what was and wasn't included are resolved by whoever is more persistent — not by what was actually agreed.

A written contract should include: the scope of work in specific detail, the materials to be used (by product name and specification, not generic description), the timeline, the payment schedule, what happens if unexpected conditions are discovered during demo, and what warranty the contractor provides on their work.

If a contractor won't put the scope in writing, or the written version is vague enough that it doesn't answer these questions, that's a problem before the project starts — not an administrative inconvenience.

Not Understanding Lien Rights

In South Carolina and North Carolina, material suppliers and subcontractors have the right to file a mechanics lien against your property if the general contractor you hired doesn't pay them. This can happen even if you paid the general contractor in full.

The protection against this is lien waivers. As you make payments to a contractor, you should receive lien waivers from the contractor and any major subcontractors or suppliers confirming that they've been paid for the work covered by that payment. Final payment should not be released until you have a final lien waiver from all parties.

This is not a paranoid precaution. Mechanics liens do get filed on residential properties. Understanding how they work before you sign a contract is worth the few minutes it takes to read up on the process.

Hiring an Unlicensed Contractor

In South Carolina, contractors performing residential projects above certain dollar thresholds are required to hold a residential builder's license or specialty contractor license. In North Carolina, similar requirements apply.

A license isn't a guarantee of quality. But it is a baseline: it means the contractor has met state requirements, carries appropriate insurance, and can be held accountable through the licensing board if something goes wrong. Working with an unlicensed contractor means none of those protections apply.

Verify licensure directly — don't take a contractor's word for it. In South Carolina, you can check the SC Labor, Licensing and Regulation (LLR) website. In North Carolina, the NC Licensing Board for General Contractors maintains a searchable database. Both are publicly accessible.

Not Checking References or Reviewing a Portfolio

Tile work and bathroom renovation are visual trades. A contractor's past work tells you something that credentials and references alone don't: can they execute? Do the grout lines align? Are the patterns consistent? Does the work look like a professional did it?

Ask to see photos of completed bathrooms — specifically showers and tile work in conditions similar to what you're requesting. If a contractor doesn't have photos of their completed work, that's worth noting.

References from past clients should be contacted, not just collected. Ask specifically: Was the project completed on time? Was the final cost close to the estimate? Were there any issues after completion, and how were they handled? Would you hire them again?

The contractor who installs your shower tile is going to work inside your home for one to three weeks and produce something you'll use every day for the next decade or two. It's worth spending time on this selection.

Timing Mistakes That Derail the Project Schedule

Ordering Materials Too Late

Custom tile, specialty tile formats, stone that needs to be cut to size, and specific fixture finishes all have lead times. Some items ship from overseas with four to eight week lead times. If you start the ordering process after demo begins, you will run out of progress before materials arrive.

The rule: all materials should be selected, ordered, and either delivered or confirmed for delivery before demolition begins. Demo reveals what's behind the walls, and you want to move quickly once the scope is clear — not wait weeks for a backordered tile.

This means the selection process needs to happen during the planning phase, in parallel with contractor conversations, not after you've signed a contract and set a start date.

Sequencing Work Incorrectly

A bathroom renovation has a specific logical sequence that can't be violated without creating problems. The most common sequencing mistake: scheduling tile work before the rough-in plumbing inspection has been completed and passed.

Rough-in plumbing — the drain lines, water supply, and valve bodies set in the wall — must be inspected by the building department before it's covered up with substrate and tile. If tile goes up before the inspection happens, the inspector can require it to come back down. You've now paid for tile installation twice.

The correct sequence for a shower build: framing, rough-in plumbing, rough-in electrical, inspection, waterproof substrate, waterproofing membrane, tile, fixtures, trim. Each step depends on the one before it. A competent contractor will schedule around inspection timelines rather than around convenience.

Ask your contractor to walk you through the sequencing plan before work starts. If they can't clearly explain the order of operations and where inspections fit in, that's worth addressing before demo day.

FAQ: Common Bathroom Remodeling Questions

Do I need a permit to retile my shower?
It depends on the scope of work. Replacing tile in place — same footprint, no plumbing changes — may not require a permit in all jurisdictions. But if the project involves moving or modifying plumbing, electrical work, or structural changes, a permit is required in South Carolina and North Carolina. When in doubt, ask your contractor and verify with your local building department. Unpermitted work can create problems when you sell.

How much contingency budget should I plan for in a bathroom remodel?
Plan for 15 to 20 percent of your total project budget as a contingency. Bathrooms are more likely than most spaces to reveal hidden problems during demo — water damage, inadequate original construction, compromised plumbing. The contingency isn't money you expect to spend; it's protection against things you can't see until the walls are open.

How do I know if a tile is safe for bathroom floors?
Look for the DCOF (Dynamic Coefficient of Friction) rating. Wet bathroom floors require a minimum DCOF of 0.42. Polished marble, high-gloss porcelain, and some natural stones fall below this threshold and are slip hazards in wet conditions. Also check the PEI rating — floor tile should be PEI 3 or higher for residential use.

What's the difference between waterproofing a shower and just using cement board?
Cement board is a non-water-soluble substrate that doesn't deteriorate when wet. It is not waterproof. Water still passes through tile grout and through cement board over time. A waterproofing membrane — applied over the cement board or using a panel system with integrated waterproofing — is what actually keeps water out of the wall assembly. Both are needed. Cement board alone is insufficient.

Why should I order extra tile, and how much extra?
Order at least 10 percent more tile than your square footage calculation for cuts, breakage, and pattern waste. For diagonal or complex patterns, go to 15 or 20 percent. The more important reason: tile is manufactured in dye lots, and a reorder from a different dye lot may not match. Keep leftover tile stored flat in a dry location. You'll need it eventually for repairs.

How much should I pay upfront to a contractor?
A deposit of 25 to 33 percent of the project total is standard and reasonable. Paying 50 percent or more upfront is disproportionate and shifts financial risk entirely to you before work is complete. The balance should be tied to project milestones, with final payment released only after the work is complete and you've verified the scope was met.

What's a lien waiver and do I need one?
A mechanics lien is a legal claim a subcontractor or material supplier can place on your property if the general contractor doesn't pay them — even if you paid the contractor. A lien waiver is a document from the contractor (and ideally from subs and suppliers) confirming they've been paid for work through a specific date. Request lien waivers with each payment and a final unconditional lien waiver before releasing your final payment.

Can I use glossy tile in my shower?
On shower walls, yes. On the floor, no. Polished and high-gloss tiles don't meet minimum slip resistance requirements for wet floor applications. On walls, glossy and polished tile works beautifully — it reflects light, is easy to wipe clean, and holds up well in a wet environment. Keep polished finishes on the walls and use textured, matte, or honed tile on the floor.

What size exhaust fan does my bathroom need?
The standard rule is 1 CFM per square foot of floor area, with a minimum of 50 CFM for any bathroom. For a 60-square-foot bathroom, that's 60 CFM minimum — a 80 CFM fan gives you headroom. For bathrooms over 100 square feet, calculate based on room volume: multiply length × width × ceiling height to get cubic feet, then divide by 7.5 for the CFM required.

What should be in a bathroom remodel contract?
At minimum: detailed scope of work (not vague descriptions), specific materials by product name, payment schedule tied to milestones, timeline with start and completion dates, what happens if unexpected conditions are found during demo, and the contractor's warranty terms. If the contract is a one-page agreement that doesn't answer these questions, ask for more specificity before signing.

Why do grout lines crack at shower corners?
Because grout is rigid and can't accommodate the movement that occurs at changes of plane. Corners — where wall meets wall, and where wall meets floor — experience thermal and structural movement that cracks grout over time. The correct approach is to use flexible, color-matched caulk at all inside corners instead of grout. This is specified in TCNA installation standards and is not a shortcut — it's the right way to build a shower.

How do I verify a contractor is licensed in South Carolina or North Carolina?
In South Carolina, check the SC Labor, Licensing and Regulation (LLR) database at llr.sc.gov. In North Carolina, check the NC Licensing Board for General Contractors at nclbgc.org. Both are publicly searchable. Verify the license is current and covers residential construction or the appropriate specialty. Don't rely on a contractor's self-reporting.

Is it okay to move the shower drain to a new location?
Yes, but it requires opening the floor, modifying the drain line, and repitching the slope to the stack. In slab-on-grade construction, this means saw-cutting concrete. It adds significant cost and time to the project, and the floor must be allowed to cure before tile work begins. Establish the drain location in the design phase — changing it after rough-in plumbing is set is expensive.

What's the minimum slope required for a shower floor to drain correctly?
The standard is 1/4 inch of drop per linear foot, sloped toward the drain from all sides. This slope is built into the mud bed during installation. Too little slope and water sits on the floor rather than draining. Too much slope and the floor feels uncomfortable to stand on and may be difficult to tile with full pieces. The 1/4 inch standard has been the industry norm for decades and produces a floor that drains efficiently and is comfortable to use.

What kind of lighting works best at a bathroom vanity?
Side-mounted fixtures at face height on either side of the mirror provide the most even, shadow-free illumination for grooming tasks. A vertical fixture or sconce on each side — roughly at eye level — eliminates the shadowing that a single overhead light creates on the face. Pair side lighting with general overhead illumination for the room, and put everything on a dimmer for flexibility. The light source temperature matters too: 2700K to 3000K (warm white) reads more accurately for skin tones than cooler, bluer light.

VT TILE LLC is a licensed and insured tile installation and remodeling contractor serving Greenville, SC and Charlotte, NC. We specialize in custom tile showers, bathroom remodels, kitchen backsplashes, tile floors, and fireplaces. Contact us to discuss your project or to review our portfolio of completed work in the Upstate and Charlotte markets.