The Tile Floor Installation Process: What Happens, Step by Step, and How Long It Takes

A tile floor looks simple once it is done: tile, grout, finished. Most of the work that decides whether it lasts twenty years or cracks in two happens before the first tile goes down. Here is what a tile installation looks like from start to finish, how long each step takes, and what to ask about so you know the parts you will never see were done right.

If you have not chosen a tile yet, start with our guide to porcelain vs. ceramic tile. For bathrooms specifically, see the bathroom flooring guide.

Before anything is ordered: measure, look under the floor, plan the layout

A good estimate starts with more than a tape measure. On the first visit we check:

• What the floor is made of. A wood-framed floor over a crawl space or basement and a concrete slab need different preparation. Many split-levels and ramblers around the DMV have both.
• How stiff and flat it is. Tile needs a floor that does not bounce and does not dip. A floor that flexes when you walk across it will crack grout, and a floor with high and low spots makes large tiles rock.
• Heights at doorways and appliances. Tile plus its base is thicker than vinyl or carpet. That affects thresholds, the dishwasher opening under the counter, and whether doors need trimming.
• The tile itself. Large-format tile, natural stone and wood-look planks each have their own flatness requirements and setting materials.

Order about 10 to 15 percent more tile than the square footage for cuts and breakage, more for diagonal or herringbone layouts. Keep a few spare tiles after the job. If one ever cracks, matching the exact color lot years later is close to impossible.

Step one: tear-out, half a day to a day

The old floor comes out. Old tile is the loudest and dustiest version of this, because it has to be broken up along with the mortar bed under it. Vinyl and linoleum come up faster, though older sheet flooring and its adhesive can contain asbestos in homes built before the 1980s and should be tested before it is disturbed. In bathrooms, the toilet comes off and the flange is checked. In kitchens, the dishwasher and refrigerator are pulled out.

Expect noise and some dust even with plastic sheeting over doorways. Our prep checklist covers how to get the room and the rest of the house ready.

Step two: subfloor repair and the base, one to two days

This is the step that separates a tile floor that lasts from one that does not.

• Repairs. Soft or water-damaged subfloor, common around old toilets and under dishwashers, is cut out and replaced. Loose panels are screwed down so they do not move.
• Stiffening. If the floor bounces, it may need blocking between joists or an added layer of plywood. Natural stone needs a stiffer floor than porcelain.
• Flattening. Low spots are filled and high spots ground down. On slabs or badly uneven floors, a self-leveling underlayment may be poured, which adds a day for it to set before tile.
• The base layer. Tile is not set directly on plywood. Cement backer board, screwed and taped at the seams, or an uncoupling membrane goes down first. On concrete, a crack-isolation membrane keeps hairline cracks in the slab from telegraphing up through the tile. In wet areas, a waterproofing membrane may be part of this step.
• Heated floors. If you are adding radiant heat, the heating mat or cable goes in now and is tested before and after it is covered. See our guide to flooring over radiant heat.

Step three: layout, a few hours that matter a lot

Before mixing any mortar, the installer snaps reference lines and dry-lays tile to decide where the pattern starts. The goals are to avoid thin slivers of tile at a doorway or along the most visible wall, to center the pattern in the room or on a focal point like a tub or island, and to keep grout lines straight through doorways into the next room. Rooms are rarely square, so this is where an experienced installer earns their keep.

Rectangular tiles laid in a brick pattern should usually be offset by no more than a third of their length. A 50 percent offset on long tiles exaggerates any slight bow in the tile, which is why many manufacturers recommend against it.

Step four: setting the tile, one to three days

Thinset mortar is mixed and troweled onto the floor with a notched trowel sized for the tile. Larger tiles are also back-buttered, with a thin coat on the back of each tile, and pressed into place so there are no hollow spots. Installers pull up a tile now and then to check that the mortar is making full contact.

For large-format tile, a leveling clip system is usually used to keep neighboring edges flush while the mortar sets. Cuts are made with a wet saw, and cuts around door casings are made by undercutting the casing so tile slides beneath it rather than being notched around it.

The floor then has to cure before grout. With standard thinset that is typically about 24 hours. Rapid-setting mortars can allow grouting the same day when the schedule is tight.

Step five: grout, half a day

Spacers come out, joints are cleaned, and grout is worked into the joints and then sponged off the tile face. A haze left on the tile is buffed off afterward. You will have chosen between a few grout types:

• Sanded cement grout for wider joints. Economical, but porous, so it needs sealing.
• Unsanded grout for very narrow joints and some polished stones that sand could scratch.
• High-performance and epoxy grouts, which resist stains and usually do not need sealing. They cost more and take more skill to apply, and they are worth it on kitchen floors.

Where tile meets a wall, a tub or a cabinet base, the joint is filled with matching flexible caulk rather than grout. Those spots move slightly with the house, and rigid grout there will crack.

Step six: trim, fixtures and cure, one day plus waiting

Baseboards or shoe molding go back on, transitions are set at doorways, and the toilet is reset with a new wax ring. Appliances can usually go back after a couple of days. If the grout needs sealing, that happens once it has cured, often a few days or more after grouting depending on the product. Our guide to baseboards and trim with new floors explains the trim choices.

A realistic timeline

• Powder room or small bathroom: about two to three days.
• Full bathroom floor: about three to four days, longer with a heated floor or major subfloor repair.
• Kitchen: about three to six days, depending on size, appliances and whether the floor runs under the cabinets.
• Basement or large open area: varies with the slab, moisture and leveling needs.

Winter is a good time for indoor tile work, but the room needs to stay heated. Mortar and grout cure slowly in a cold room. Our guide to the best time of year for flooring covers seasonal scheduling.

What should be on a tile quote

Two tile quotes can differ a lot because one includes the base and one does not. A complete quote should say:

• How the old floor will be removed and disposed of.
• What base goes under the tile: backer board, membrane, crack isolation, leveling.
• How subfloor repairs will be priced if damage is found once the old floor is up.
• The mortar and grout to be used, and whether sealing is included.
• Transitions, trim and toilet or appliance reset.

If a quote is much lower, ask what is missing. Skipping the base is the most common shortcut and the most common reason tile cracks. For broader advice, see our guide to choosing a flooring company.

Tile or luxury vinyl?

If the timeline, height or cost of tile is a problem, waterproof luxury vinyl goes in faster, needs less preparation and feels warmer underfoot. Tile lasts longer, handles heat and scratches better, and adds more value in a kitchen or primary bath. Our vinyl flooring guide covers the trade-offs.

Frequently asked questions

Planning a tile floor? Request a free estimate. We will check the subfloor, talk through layout and grout, and give you a written price that spells out everything under the tile as well as the tile itself.