Bathroom tile installation in Knoxville: finished gray porcelain floor tile with even grout lines meeting a tiled shower

Tile that stays flat through humid summers

Bathroom Tile Installation Knoxville TN

Bathroom tile installation means preparing the floor and walls.

Tile is set in thinset over a membrane. Then it is grouted so water stays out. Tile does not crack because it is cheap. It cracks because the floor under it moves. Call (865) 298-9333 for a free in-home estimate, no obligation, Monday to Saturday.

L/360minimum floor stiffness for tile
3 to 5days for a small bathroom
83%January humidity in Knoxville
6days a week, Monday to Saturday

What the job covers in a Sequoyah Hills house, from joist to last grout line

You step out of the shower on a Tuesday morning and feel the floor give, just a little. You tell yourself new tile will fix it. Good bathroom flooring Knoxville TN homes can rely on starts below the tile.

  • Check: joists, span, subfloor flex and soft spots.
  • Repair: stiffen framing, replace damaged subfloor.
  • Prepare: flat surface, membrane, slope toward the drain.
  • Set: layout, thinset, tile.
  • Finish: cure, grout, seal.

Shower tile installation Knoxville TN walls and floors share one seam, so we plan both

Bathroom floor replacement

Old tile or vinyl comes up. The subfloor is checked. Then the new floor goes down on a flat, stiff base. It suits bathrooms where the floor flexes or the grout keeps cracking. Any bathroom floor tile installation Knoxville TN homes get has to be planned around humidity, not just looks.

Shower wall and floor tile

The waterproofing must run continuously from the wet area into the floor. A full shower rebuild is its own job on our shower rebuild page. For bathroom tile installation Knoxville homes need around a shower, the junction is made flat, sloped and sealed.

Heated floors

A heating mat sits in the thinset. So the plan comes before the tile choice. A heated bathroom floor Knoxville TN homeowners add is felt every winter morning. The mat, thermostat and circuit are planned together.

Tile repair

Bathroom tile repair Knoxville TN homes need starts by finding why it cracked. Replacing a cracked tile without fixing the movement under it just resets the clock. The cause gets found first, then the tile is replaced.

Porcelain floor tile meeting a shower curb with even grout lines and a caulked corner

Signs the tile in your Cherokee Boulevard bathroom is failing from below

  • Hollow sound when you tap a tile.
  • Grout lines cracking in a straight line.
  • A floor that gives underfoot.
  • Dark grout that returns after cleaning.
  • Tiles lifting at the tub or shower edge.

These point to movement or moisture, not bad luck. Tile on a moving base cracks again, so the base gets fixed first.

Slip, size and grout: which tile fits a Scenic Drive bathroom

Porcelain tile bathroom Knoxville floors can handle, side by side

TileBest forWatch for
PorcelainWet floors, heavy usePolished finishes are slick when wet
CeramicWalls and lower-traffic floorsSofter surface chips sooner
Natural stoneA one-of-a-kind lookMay need L/720 floor stiffness and sealing
MosaicShower floors, extra gripMore grout lines, longer set time

Large tile needs a flatter base, about 1/8 inch over 10 feet. Cement grout needs sealing. Epoxy grout costs three to five times more but resists stains and moisture. Order 10 to 15 percent extra, and about 20 percent for diagonal layouts.

Under the porcelain: subfloor, membrane and slab, in the order they matter

Ceramic and porcelain call for a floor that deflects no more than its span divided by 360, written L/360. Natural stone may need L/720. A common base is exterior-grade, tongue-and-groove plywood about 3/4 inch thick. It is screwed every 6 to 8 inches along the joists. It must be flat to within 1/4 inch over 10 feet. Where joists are spaced wider than 16 inches on center, an uncoupling membrane such as Schluter-Ditra is the usual answer.

It lets the subfloor shift while the tile and grout stay put.

Concrete slabs need a moisture test before any thinset goes down. Skipping it is how tile ends up hollow and loose.

Knoxville's 83 percent January humidity and what it does to a bathroom floor

Knoxville is humid subtropical. Relative humidity averages 83 percent in January and 75 percent in June, with about 52 inches of rain a year. The Tennessee Department of Health says mold is a moisture problem. It suggests keeping indoor humidity around 30 to 50 percent. It also notes that bathroom vent fans help. After a leak, it advises drying materials within 24 to 48 hours. It also says to check that the subfloor under hard flooring is dry.

Your fan matters too, so see our fan and lighting page.

Bathroom floor with exposed subfloor partly covered by an uncoupling membrane

What Sequoyah Hills homeowners ask before the demo starts

Objection: Can't you just tile over the old floor?

Sometimes, over a sound, flat layer. Over lifting vinyl or flexing plywood, no. Tile over a moving base cracks, and then you pay twice.

Objection: A small bathroom should take a day

It takes three to five days including cure time. The cure never gets shortened to meet your date.

Objection: Won't the grout be dirty in a year?

It can be, if it is unsealed cement grout in a humid bathroom. Sealing, a working fan and the right grout keep it clean.

From the first call to the last grout line, near Cherokee Boulevard

  1. Call (865) 298-9333 and tell us the room and the problem.
  2. Book the in-home look so your floor can be tested for flex and soft spots.
  3. Repair the subfloor and set the membrane.
  4. Lay out and set the tile in thinset.
  5. Grout and seal after the tile cures.
  6. Walk the finished floor with us before we go.

What moves the bill and the calendar on a Sequoyah Hills tile job

A small bathroom takes three to five days including cure time. Larger rooms or diagonal patterns can take up to 10. The bill follows the tile and its size, the layout, demolition, subfloor repair, grout type and any heated mat. Call (865) 298-9333 and you get a price for your list.

Where we tile, from Sequoyah Hills to Lenoir City

Our office sits at 9000 Executive Park Dr, Knoxville, TN 37923. In Knoxville you will find us tiling along Kingston Pike near Sequoyah Hills and Cherokee Boulevard. You can also reach us in Farragut, Maryville, Alcoa, Oak Ridge and Lenoir City. They are all on our service areas page. Whoever you hire, ask any tile installer Knoxville TN bathroom owners recommend what sits under the tile.

See also the cabinet that sits on your new floor or start at the Knoxville bathroom remodeling hub.

What you can count on before our crew steps in

  • A local crew, licensed and insured.
  • A free in-home estimate.
  • A written warranty. Read how it works on our warranty page.
  • One phone line, no forms.
Regional case file

What the Tennessee Department of Health says about wet bathroom floors

Scene. This is not a customer job and not a single dated Knoxville event. It is the state's own guidance. Read it alongside Knoxville's 1991 to 2020 climate normals. January humidity runs 83 percent. The city gets about 52 inches of rain a year and about 37 days above 90 degrees.

Problem. The Tennessee Department of Health's mold guidance says mold is a moisture problem. It lists bathrooms among the common places it appears.

Tension. It advises drying wet carpet within 24 to 48 hours. It says hard floors such as ceramic tile can be cleaned. The subfloor under them must be dry too. Tile hides a wet subfloor until the grout cracks.

What we do. A careful crew probes for soft spots, checks the subfloor moisture and repairs the framing before any membrane goes down.

Outcome. A stiff, flat, dry floor gives tile a base that does not move.

Lesson. Ask what is under the tile before you ask what it looks like.

Tile questions from Sequoyah Hills, Cherokee Boulevard and Kingston Pike

How long does bathroom tile installation take?

A small bathroom takes three to five days including cure time. Larger rooms or complex patterns can take up to 10. Bathroom Remodeling Knoxville confirms the schedule after the in-home visit, because subfloor repair is the usual reason a date moves.

How much does tiling a bathroom usually cost?

It depends on tile, size and prep. Block Renovation reports national installed averages of roughly $17 to $40 per square foot for porcelain. For ceramic it reports $13 to $30, with labor often $5 to $15 of that. That is an average, not a quote. Call (865) 298-9333 to confirm.

Can you tile over my existing bathroom floor?

Only over a sound, flat, well-bonded base. Bathroom Remodeling Knoxville tests it at the in-home visit. We tell you if it has to come out. Tile over lifting vinyl or flexing plywood cracks again.

Do I need an uncoupling membrane under bathroom tile?

On most wood subfloors, yes. A membrane such as Schluter-Ditra lets the floor move without cracking tile and grout. It is the usual answer where joists are spaced wider than 16 inches on center.

Will you test a concrete slab before tiling?

Yes. Slab moisture is tested before adhesive goes down, because trapped moisture loosens tile. Bathroom Remodeling Knoxville will not set tile over a slab we have not tested.

What if the bathroom subfloor is soft?

We open it, find the cause and repair it. A soft subfloor means water has been there, and tile over a soft spot fails. So we do not cover it.

Is epoxy grout worth it in a bathroom?

In a shower or a humid, busy bathroom, often yes. Epoxy grout costs three to five times more than cement grout. It resists stains and moisture. Cement grout needs sealing.

How much extra tile should I buy?

Order 10 to 15 percent extra for straight layouts and about 20 percent for diagonal patterns. Cuts and breaks use more than people expect. A spare box helps with future repair.

Ready to find out what is under your tile?

Your floor, framing and moisture get checked before you pick a tile. Call (865) 298-9333, Monday to Saturday, no obligation.

Call (865) 298-9333
Call (865) 298-9333