Tile is the finish everyone judges and the assembly almost nobody sees. Under every tiled floor and every shower wall is a substrate, a movement strategy and, in wet areas, a waterproofing membrane. Those three decide whether the installation lasts twenty years or cracks in the second winter. The tile itself is the last decision, not the first.
The Substrate Decides Everything
Tile is rigid and does not tolerate deflection. On a joisted floor, the framing has to be stiff enough for the material — natural stone demands a stiffer floor than ceramic or porcelain — and where it is not, the fix is added structure or an uncoupling membrane, not more thinset. On a concrete slab the question is different: existing cracks in the slab will telegraph straight through a bonded installation, which is exactly what an uncoupling membrane is designed to prevent.
Flatness is the other half. Large-format tile is unforgiving of a substrate that is out of plane, and lippage between adjacent tiles comes from the floor, not the installer’s patience. Self-levelling compound before installation costs less than a floor that has to be redone.
Waterproofing in Wet Areas
Tile and grout are not waterproof. They are a wear surface over an assembly that is, and every failed shower fails in that assembly rather than at the tile.
A shower built to last has a continuous waterproof membrane — sheet or liquid-applied — with the corners, curb and drain flange treated as the critical details. Cement backer board is a substrate, not a waterproofing layer; tile set directly on it without a membrane is the most common shortcut in this market. Niches need the same membrane treatment and a sloped sill. The drain must match the system: a bonded-flange drain for a membrane assembly, not a mismatched pairing at the one point where all the water arrives. A flood test on the pan before tiling is the check that catches a mistake while it still costs nothing.
Movement Joints, and Why Grout Cracks
Grout cracking in a straight line is almost never a grout problem. It is a movement problem. Tile assemblies expand and contract, and the industry standard is to interrupt them: a soft joint of flexible sealant rather than grout at every change of plane — wall to floor, inside corners, around the perimeter — and periodic movement joints across large fields, more frequently where the floor gets direct sunlight or sits over radiant heat. Colorado’s temperature swings make this more relevant here than in a mild climate. Grout in a corner will crack. Sealant in a corner will not.
Materials, Honestly
- Porcelain — water absorption at or below 0.5%, hard, the default for floors and wet walls.
- Ceramic — less dense, cheaper, appropriate for dry walls and light-traffic floors.
- Natural stone — marble, travertine, slate. Porous, requires sealing on a schedule, etches under acidic cleaners, and demands a stiffer substrate. A legitimate choice made knowingly.
- Glass and mosaic — a beautiful accent with far more grout line per square foot, which is where epoxy grout earns its cost.
- Large-format — fewer joints, more substrate preparation. The labour moves from setting to levelling.
Heated Floors
Electric radiant mat under tile is one of the highest-satisfaction upgrades in a Colorado bathroom, and it is only practical during a tile installation. Two things matter: the circuit has to exist, which in an older house with a small panel is a real question, and the assembly has to accommodate the thermal movement the heat introduces — which means the movement joints above are not optional over a heated floor.
Typical Planning Range
| Work | Planning range |
|---|---|
| Floor tile, installation | $10–$25 per square foot |
| Shower surround, full waterproofed assembly | $3,500–$9,000 |
| Backsplash | $800–$2,500 |
Ranges are for planning and exclude material selection. We price a project after we have seen it, not before.
Before Demolition of Old Tile
Removing existing tile in a mid-century house is where Regulation 8 applies. Old floor tile, mastic adhesive and mud-set installations from the 1950s and 1960s commonly contain asbestos, and inspection by a Colorado-certified asbestos building inspector is required once the work will disturb 32 square feet, 50 linear feet on pipe, or the equivalent of a 55-gallon drum. Only an accredited laboratory can clear a sample, and friable material must be removed by a certified General Abatement Contractor. We test before demolition rather than after.
Where We Work
Across the Denver metro and the Front Range: Denver, Jefferson County, Arapahoe County, Douglas County and Adams County.
Common Questions
Can you tile over existing tile?
Sometimes, on a wall, over a sound and well-bonded installation with the right primer. On a shower floor, no — it buries the question of whether the waterproofing underneath is intact, which is the only question that matters.
Why did my grout crack?
Almost always movement or deflection, not the grout. Cracks along a corner or a straight line across a floor point at a missing movement joint or a floor that flexes. Regrouting without fixing the cause repeats the failure.
Is epoxy grout worth it?
In a shower floor, a mosaic installation or anything with heavy grout line, generally yes — it does not absorb water and resists staining. On a large-format dry wall, standard cement grout with a sealer is fine.
Thinset, Layout and the Details That Show
Coverage is the invisible quality marker. Behind a properly set tile the mortar contacts nearly the entire back of the tile — the standard is higher in wet areas and for large-format — and the way to achieve it is back-buttering and directional trowelling, not dabs at the corners. A tile set on five dollops sounds hollow, cracks under point load, and in a shower creates voids where water collects. We pull a tile during setting to verify coverage rather than assuming it.
Layout is decided before the first tile, not discovered at the last. Where the cuts land, whether a full tile or a sliver meets the most visible wall, how the grout lines align between floor and wall, whether a running-bond offset on large-format tile will exaggerate the natural bow in the material — these are decisions made with a dry layout and a chalk line. Retiling because the pattern died in a bad corner is the most avoidable failure in the trade.
Preparing the Substrate
- Wood subfloor — deflection checked against the material, then cement backer board or an uncoupling membrane over a full mortar bed, fastened to specification. Tile set directly on plywood will crack.
- Concrete slab — cleaned, profiled, cracks isolated with a crack-isolation membrane so slab movement does not transfer.
- Existing mud bed — common in mid-century houses and often excellent once verified, but an asbestos question before it is disturbed.
- Shower walls — foam or cement board with a waterproof membrane, never standard drywall and never green board.
- Flatness — corrected with levelling compound or a floated bed before setting, not with mortar thickness during it.
Curbless Showers and Linear Drains
A curbless shower is the most requested bathroom upgrade in this market and the most demanding to build. It requires the floor structure to be recessed — joists sistered and the subfloor dropped, or the slab cut — so the finished tile can slope to drain without a threshold, plus a waterproofing plan that extends well beyond the wet zone because there is no curb containing the water. A linear drain along one wall allows a single-plane slope, which is what makes large-format tile possible in a shower floor at all; a centre point drain requires four sloped planes and therefore small tile or a mosaic. Done right it is barrier-free, ages with the household and looks like nothing else. Done as a retrofit without the structural drop, it floods the bathroom.
Grout, Sealing and Living With Tile
Cement grout is porous and needs sealing after cure, then periodically after that. Epoxy grout does not absorb water and does not need sealing, at the cost of a harder installation and a higher price. Natural stone needs sealing regardless of grout choice, and needs pH-neutral cleaning — the vinegar and generic bathroom sprays most people reach for etch marble and travertine permanently. In a shower, the practical maintenance that matters most is not sealer, it is ventilation: an exhaust fan that actually runs during and after a shower, ducted outside rather than into the attic, removes the moisture that grows the mould people blame on grout.
We hand over which sealer was used and when it is due, because a schedule nobody was told about is a schedule nobody keeps.
Repairs and Partial Replacement
Not every problem needs a full tear-out. A handful of cracked tiles can be cut out and replaced where matching material exists or a sensible accent can be substituted. Failed grout in a dry area can be raked and replaced. But a shower that leaks into the ceiling below, or a floor whose tiles crack repeatedly in the same area, is telling you the assembly under it has failed — and regrouting that is money spent to postpone the same conversation. We will say which one you have after we look, and we will say it plainly even when the answer is the smaller job.
Backsplashes and Kitchen Tile
A backsplash is a small job with a high proportion of visible detail. The outlets are the tell: cover plates that sit proud of the tile, or cuts that leave a gap the plate does not cover, are what people notice for years afterwards, and the fix is box extenders installed before tiling rather than trimmed grout afterwards. The other decisions are where the tile terminates — at the upper cabinet, at the underside of a hood, or full height to the ceiling on a feature wall — and how the edge is finished. A bullnose, a metal profile and a mitred edge are three different looks at three different labour costs, and only one of them can be chosen after the tile is ordered.
Behind the range the substrate matters more than elsewhere, because that is the wall that gets heat, grease and cleaning. Natural stone there will stain from cooking oil unless sealed and re-sealed; porcelain will not.
Timelines
Tile work is not fast, and most of the elapsed time is curing rather than labour. Waterproofing has to cure before a flood test, the flood test itself holds water for a full day, thinset has to cure before grouting, and grout has to cure before sealing or use. A shower is typically several days from substrate to usable, and a contractor promising a fully tiled and showering bathroom in two is compressing the exact stages that determine whether it lasts. We schedule the cure time and say so up front rather than discovering it midweek.
Related Services
Tile Work is often one part of a larger scope. The trades we run alongside it:
- Kitchen RemodelingLayouts, cabinets, counters, full gut rebuilds
- Bathroom RemodelingPrimary baths, guest baths, wet-area rebuilds
- Basement FinishingEgress, ceiling height, permits, finished space
- Home AdditionsBump-outs, second stories, whole-room additions
- RoofingReplacement, storm damage, impact-rated options
- Deck BuildingComposite and wood decks, rails, structural repair
- FencingWood, composite and metal fence installation
- FramingStructural framing, walls, load-bearing changes
- DrywallHang, tape, texture, repair and patching
- PaintingInterior and exterior, prep and finish work
- DemolitionSelective interior demo and full teardowns
Where We Work
Tile Work is available across our full service area. Permitting and inspection follow the county or municipality with jurisdiction over the address: