- Tub surround tile work: $2,000 flat.
- Kitchen backsplash tile work: $1,000 flat, labor.
- Tile floors: $3 per square foot labor, or $2 per square foot labor on jobs of 2,000 square feet or more.
What needs a sealer and what can be left alone
Standard glazed ceramic and porcelain tiles do not absorb water, so the tile face never needs a sealer. The glaze baked on at the factory is already a glass barrier. Natural stone is completely different. Marble, travertine, limestone, slate, and terrazzo are porous materials full of microscopic pathways that pull in dirty water, body oils, and colored liquids. If you have unglazed stone or raw zellige on a shower wall or floor, that stone must be sealed with a penetrating sealer before and after installation to stop deep staining.
Standard cement grout always needs sealer because it is fundamentally a porous mix of sand and cement. Without protection, water and dirt soak right into the joint and discolor the sand. Epoxy grout does not absorb moisture and never requires sealing. When we set tile with cementitious grout, we allow the joint to cure fully before applying a penetrating sealer. This treatment does not turn the grout into rubber or plastic. It simply lines the pores so liquids bead on top long enough for you to wipe them away.
Everyday cleaners that ruin stone and eat cement grout
The biggest threat to a tile installation is often sitting in your cleaning caddy. Many popular store sprays rely on strong acids or harsh alkalis to dissolve soap scum quickly. Acid attacks cementitious grout by dissolving the microscopic cement bonds that hold the sand particles together. Over time, spraying vinegar or acidic bath products causes the grout lines to turn chalky, pit, and wash out. On marble and polished stone, acids cause immediate surface etching that leaves dull, cloudy spots you cannot buff out with a towel.
- White vinegar and citrus cleaners that strip the polish off marble and break down cement binders.
- Concentrated liquid bleach used repeatedly, which weakens grout structure and breaks down flexible sealant.
- Abrasive scouring powders and stiff wire brushes that scratch glazed tile finishes and gouge soft stone.
- Thick oil soaps and wax cleaners that leave a sticky surface film that traps dirt and darkens grout lines.
Shower water, squeegees, and building clean habits
Central Texas tap water carries a heavy load of dissolved limestone and minerals. When hard water evaporates on shower walls, it leaves those minerals behind as white crusty scale. If you let that mineral scale dry on tile, it bonds tightly to the surface and traps soap scum against the grout lines. The easiest way to keep a shower clean is to stop the water from evaporating on the wall in the first place. Keeping the moisture down also stops mildew from gaining a foothold in the corners.
Keep a simple rubber squeegee hanging in the shower and wipe down the walls and glass doors after the last person finishes in the morning. This takes less than a minute and pulls most of the water down the drain. Run the bathroom exhaust fan during every shower and leave it running for twenty minutes after you step out. Airflow pulls the remaining humidity out of the room so damp grout joints can dry completely between uses. Dry joints resist mildew far better than damp ones.
How to tell dirty grout from an active water leak behind the wall
Every homeowner eventually sees a dark patch in the shower and wonders what caused it. Surface dirt, body wash residue, and mildew usually sit across a wide patch of tile and lift away when you scrub the area with warm water and a neutral cleaner. A water leak behaves differently. When moisture gets trapped behind the tile due to a failed waterproof pan or damaged backer board, the bottom grout joints stay dark, wet, and cool to the touch even after the shower sits completely unused for days.
Check the adjoining drywall in the hallway or closet behind the shower. If the baseboard feels soft, the drywall looks swollen, or you smell persistent dampness, water is escaping through the wall assembly rather than draining. Cleaning the surface will not fix a failed pan or cracked substrate. When a shower requires a tear out and rebuild, we build the waterproofing solid from the studs out. Tub surround tile work is $2,000 flat, and for custom showers or larger repairs you can call for a straight quote.
The truth about grout paint, pens, and spot repairs
Grout pens and liquid colorants look tempting when you want to freshen up stained grout lines without calling in a tile setter. These products are essentially acrylic or epoxy paint designed to coat the surface of the joint. On a dry kitchen backsplash that receives minimal wear, a colorant can make old grout look clean and uniform. However, on a shower floor or in a high-traffic hallway, paint forms a thin film that eventually peels, flakes, and traps dark water beneath the edges.
A grout pen cannot repair structural damage. If grout is cracked, crumbling, or loose under your feet, painting over the seam does nothing to stabilize the movement. Cracked grout happens when the subfloor flexes or the thinset bond lets go beneath the tile. The only reliable fix is to mechanically rake out the damaged grout, check that the tile is still solidly bonded to the floor, and pack fresh grout deep into the joint. For persistent tile movement or full floor repairs, call for a straight quote.