The order of a bathroom remodel — why the tile you picked first goes in last

Week one: demolition and what it uncovers

Demolition is a day or two of work and the most informative stage of the project. Nobody knows what is behind fifty-year-old tile until it is off the wall — and in the Frederick housing stock, which runs from 1900s farmhouses to 1980s subdivisions to new construction, demo regularly uncovers the project’s real scope: subfloor gone soft around a toilet flange that seeped for a decade, galvanized supply lines rotted from the inside, a vent stack routed where the new shower niche was going, or framing that was never square to begin with.

This is where an honest contract shows its worth. Hidden conditions are the legitimate change order — nobody can price rot they cannot see — but the difference between a fair contractor and an opportunist is whether the surprise comes with photos, options and a price before the extra work happens, or as a number on the final invoice. Expect a contingency in the budget for demo findings; ten percent is a sane figure for mid-century and older homes.

Old tile walls in older houses often come off as mud-set assemblies — inches of wire lath and mortar rather than board — and that changes both the labor and the disposal weight. It is also, quietly, good news: a mud-set wall coming out means the new wall goes back flat, plumb and modern.

Rough-in, inspection, and the pause that protects you

With the room stripped, the skeleton gets corrected: framing squared and plumbed, blocking added where grab bars might ever be wanted (blocking is nearly free now and impossible later), the curb or curbless pan formed, and the niche framed. Then the water and wires move. Plumbing rough-in sets the new valve, relocates drains if the layout changed, and replaces any supply lines the demo condemned — in Maryland this is licensed plumbing work, and on our jobs a licensed plumber performs it while our crew builds everything around it. Electrical brings the room to current code: GFCI protection, a properly ducted exhaust fan, and the lighting the old bathroom never had.

Then the job pauses, on purpose, for the rough inspection. The inspector looks at the framing, the pipes and the wiring while they are still visible. Homeowners sometimes read the wait as lost time; it is the cheapest insurance in the whole project, an independent check on everything that is about to be sealed shut for the next thirty years.

After the green tag: insulation in exterior walls, then board — moisture-resistant drywall on the dry walls, cement board or an equivalent tile substrate in the wet areas. Regular drywall behind shower tile is the signature mistake of every flipped bathroom; tile and grout are not waterproof, and the substrate has to survive the water that gets through them.

Waterproofing and tile — where the remodel is won or lost

Waterproofing is the layer that decides whether the bathroom lasts thirty years or five, and it is invisible in every listing photo. The wet-area substrate gets a continuous waterproof membrane — sheet or liquid-applied — with the pan, the curb, the corners and the niche treated as the critical details they are. A shower niche is a hole cut in a waterproof wall; built right it is a shelf, built wrong it is a drain into the framing. We flood-test pans before a single tile goes on, because finding a pinhole costs nothing on Tuesday and costs the ceiling below on year three.

Tile is the longest visible stage — typically three to six days for a full shower surround and floor — and the stage where craftsmanship is most legible. Layout is planned before the first cut so that cuts land symmetric in corners and slivers land where the eye never goes; large-format tile gets a flat substrate because no trowel skill hides a wavy wall behind 24-inch tile; floors get checked for lippage as they go. Grout and silicone are the finish line: grout in the field, flexible silicone at every plane change, because the corner where wall meets pan moves, and grout in a moving joint cracks by the second winter.

Heated floors deserve a mention while the floor is open: an electric mat under the tile adds a modest cost at exactly this stage and can never be added later without redoing the floor. In an older Frederick house with a bathroom over an unheated space, it converts the coldest floor in the house into the warmest room in it.

Finish week, and what to hold back until the end

The last week runs in quick layers: ceiling and wall paint in a bathroom-rated finish, the vanity set level and scribed to the wall, countertop and sink, the toilet back in (new wax ring, always — reusing one is a false economy measured in subfloors), the glass enclosure measured and installed, then hardware, mirror, accessories and the final bead of silicone. Shower glass is its own small lead time — custom enclosures are measured only after tile is done and take a week or two to fabricate — which is why the glass order date, not the tile date, often sets the day you take the first shower.

Hold the final payment until the punch list is actually punched: every drawer aligned, the fan ducted to the exterior rather than the attic, grout hazed off, the valve trim seated, the door swinging clear of the vanity. A contractor confident in the work has no quarrel with a walkthrough; the ones who need the check before the walkthrough are telling you something.

And keep the paperwork — permit, inspection records, material lists, the tile dye lot if any spares are left over. When you sell, a permitted, inspected remodel is an asset the buyer’s inspector confirms rather than questions. A box of spare tiles in the basement has rescued more than one future repair.