Tile Installation Invoice Example: Every Line Explained

Short answer: A tile installation invoice example bills the finished surface by the square foot, then puts everything under the tile on its own line. The bathroom below is 42 ft² of 12x24 floor, 96 ft² of herringbone shower wall, and $6,840 in total — and roughly a third of that total is self-leveler, cement board, and waterproofing the customer never sees once the grout is in.

Tile is the only trade where the customer pays most of the money for work that is buried by the time they see it. The membrane, the pre-slope, the flattening compound: all invisible, all the reason the job lasts. Every line below exists to make one buried hour visible. The general checklist for any trade sits in what to include on an invoice, and the rate side is in the tile pricing guide.

What does this bathroom invoice look like filled in?

---

INVOICE 2026-0214

Master bathroom, 118 Ridgeline Ct. Work performed March 2–9. Estimate EST-2026-0187, approved by signature February 24. Materials: tile supplied by customer, setting materials and membrane supplied by contractor.

#	Stage / description	Qty	Rate	Amount
1	Demo and prep — tear out existing 6x6 ceramic floor and mortar bed to subfloor	42 ft²	$4.50	$189.00
2	Debris haul and disposal, one trailer load	1	$145.00	$145.00
3	Cement backer board to shower walls: thinset-bedded, fastened, joints taped	96 ft²	$3.75	$360.00
4	Self-leveling underlayment — floor measured 7/16 in out of plane over 8 ft; 12x24 tile requires 1/8 in in 10 ft	42 ft²	$6.25	$262.50
5	Waterproofing — liquid membrane, two coats over walls, pan, curb, niche and bench	128 ft²	$5.50	$704.00
6	Sloped mortar bed to drain — pre-slope and top bed, 1/4 in per ft	12 ft²	$28.00	$336.00
7	24-hour flood test, filled, held, drained, photographed	1	included	$0.00
8	Setting — floor tile, 12x24 porcelain, straight lay, back-buttered	42 ft²	$13.50	$567.00
9	Shower walls, 3x12 porcelain, herringbone, 117 cuts	96 ft²	$22.00	$2,112.00
10	Niche 14x22 — framed, waterproofed, tiled with mitered returns	1	$385.00	$385.00
11	Bench 32x16 — built, waterproofed, tiled, mitered front edge (added on site)	1	$590.00	$590.00
12	Curb, three faces	4.5 lf	$38.00	$171.00
13	Electric heat mat set in thinset, probe placed, resistance logged before and after (mat supplied by customer)	34 ft²	$4.25	$144.50
14	Finish — grout, all tiled surfaces	138 ft²	$2.25	$310.50
15	Color-matched silicone at every change of plane	46 lf	$3.25	$149.50
16	Anodized edge profile, mitered outside corners	22 lf	$14.50	$319.00
17	Marble threshold, cut, set, sealed	1	$95.00	$95.00
18	Waste on customer-supplied tile: 12 ft² floor, 19 ft² wall. Three unopened boxes returned	—	no charge	$0.00

Balance due	$6,840.00

Use: no foot traffic 24 hours, no water 72 hours, no heat mat power for 14 days per the mat maker’s cure schedule.

---

Those dollar figures are one shop’s numbers in one market on one week. They are here so the arithmetic is followable, not so anyone copies them.

Why is everything under the tile on its own line?

Because the substrate is a separate decision with a separate price, and lumping it into a square-foot rate makes the whole job look overpriced.

Line 4 is the one to look at. A 12x24 tile has an edge longer than 15 inches, which puts it in the flatness class where the industry standard calls for the substrate to be flat within 1/8 inch in 10 feet, rather than the 1/4 inch in 10 feet allowed for smaller tile. This floor measured 7/16 out over 8 feet. Set large-format tile on that and you get lippage on every joint, and the callback is yours. So the floor gets flattened, and the flattening gets a line, a measurement, and a photo of the straightedge.

Line 5 is the second one. Cement board is not a water barrier, and a lot of customers believe it is. Two coats of membrane over 128 ft², wet-film thickness checked, and a flood test that gets logged is the difference between a shower and a future insurance claim. Write the coats and the square footage on the line and the price stops looking like padding.

Why does the shower wall cost more per square foot than the floor?

Same tile shop, same day, same installer: $13.50 on the floor, $22.00 on the wall. The gap is real and it is worth explaining before the customer asks.

Surface	What drives the rate	Typical relationship
Floor, large format, straight lay	Layout, flatness prep, back-buttering	The baseline rate
Floor, diagonal or herringbone	Cut count roughly doubles, waste jumps to 15–20%	Above the straight-lay rate
Wall	Every piece is held until it grabs; layout has to land at ceiling and corners	Above the floor rate
Ceiling	Gravity, overhead work, support until set	The highest rate on the job

Pattern is the other multiplier. A straight lay burns 7–10% of the material as waste. Diagonal and herringbone run 15–20%, and the labor moves with it, because every course ends in a cut. On line 9 above, 96 ft² of herringbone produced 117 cuts. Put the cut count on the invoice. It is the single most convincing number a tile setter can write down.

How does waste show up when the customer bought the tile?

It shows up as a fact, not as a charge. Line 18 costs nothing and is the most-read line on the invoice.

Customers who buy their own tile count boxes. If the estimate said 15% waste on a herringbone wall and the job consumed 19 ft², the invoice needs to say 19 ft² and say what came back. Three unopened boxes returned closes the loop before anyone starts counting on their own.

The place this goes wrong is the estimate, not the invoice. State the waste percentage per pattern in writing when the customer is ordering, tell them to buy from a single lot, and tell them the leftovers are theirs for future repairs. Then the invoice is confirming something they already agreed to.

Which lines get argued about, and how should they read?

The line	What the customer is thinking	Write it like this
Self-leveler, $262.50	”You are charging me to fix a floor that was already there.”	7/16 in out over 8 ft, 12x24 tile needs 1/8 in in 10 ft, photo 3 shows the straightedge
Waterproofing, $704	”Isn’t the cement board waterproof?”	Two coats, 128 ft², wet-film checked, 24-hour flood test logged
Herringbone wall, $22/ft²	”Same tile as the floor. Why is the rate higher?”	Name the pattern, the 117 cuts, and that every piece is held until it grabs
Edge profile, $319	”That is a strip of metal.”	22 lf, mitered outside corners, set in the same bond coat as the tile
Grout and silicone as separate lines	”Isn’t grout just part of tiling?”	Quantity follows joint width and tile size — show the 138 ft² and the 46 lf
Bench, $590	”That was a small extra.”	Framed, waterproofed, tiled, mitered edge, added on site, approved by text March 4

The pattern across all six: replace the noun with the verbs. “Waterproofing” is a category. “Two coats over 128 ft², flood tested 24 hours” is work.

How do I explain the estimate against this invoice?

Lead with one sentence: the estimate priced the room as measured, and the invoice adds what the demo exposed and what the customer added. Then let the table carry it.

On the estimate	On the invoice	Why it moved
Demo, haul, backer board — $694	Same	Fixed scope, measured up front
Self-leveler — $6.25/ft² if the floor fails the flatness check, $0 in total	42 ft², $262.50	Floor failed the check after tear-out, photographed, approved
Waterproofing, pan, flood test — $1,040	Same	Fixed scope
Floor, walls, niche, curb, heat mat — $3,379.50	Same	Fixed scope, same rates
Bench — optional, $590, not in total	$590	Customer added it on day two
Grout, silicone, profile, threshold — $874	Same	Fixed scope

Estimate total $5,987.50. Invoice total $6,840.00. Every dollar of the $852.50 gap is a conditional line that came true or an add the customer requested, and no rate on the invoice differs from the rate on the estimate. That last part is what keeps the conversation short.

Conditional lines are the whole trick. Price the possibility on the estimate with a rate and no dollar figure in the total, and the surprise gets agreed before it is found. When the balance still sits open after that, the escalation ladder is in how to get paid for tile work.

How do I build my own square-foot rate?

Not from this invoice. Every number above is one shop in one market, and tile rates swing hard on labor cost, how much large format the local market buys, and whether you are competing against crews who skip the membrane.

Build it in five steps.

1. Measure in the units you install. Floor ft², wall ft² and ceiling ft² separately, linear feet for profile, curb and silicone, and each for niches, benches and thresholds. One blended square-foot number hides the wall and the trim, which is exactly where the hours are.
2. Get material per unit from coverage, not from memory. Thinset coverage falls sharply when you move from a 1/4 x 3/8 notch to a 1/2 in notch for back-buttered large format. Read the bag for the notch you actually use, then add the pattern’s waste factor on top.
3. Time yourself in ft² per hour, by pattern and by room size. A 42 ft² bathroom floor will never run at the rate of a 900 ft² open floor, because the cuts per square foot are several times higher. Keep separate numbers for small wet rooms and open areas or you will lose money on every bathroom you quote.
4. Find your loaded hour. Everything that runs whether or not you are setting tile: truck, insurance, blades, mixing paddles, phone, slurry disposal, and the dust control that OSHA’s respirable crystalline silica standard for construction expects when you cut with a saw. Divide by the hours you can realistically sell in a year, not the hours in a year. Those costs also belong in tile business expenses at tax time.
5. Add margin by division, not markup by multiplication. This is where tile setters quietly lose points. A $52 loaded hour marked up 30% is $67.60, which is a 23% margin. For a 30% margin, divide: $52 ÷ 0.70 = $74.29. Markup multiplies cost; margin divides by one minus your target.

What do I keep after the last profile goes on?

The signed estimate with its conditional lines, the straightedge photo, the flood test photo with a timestamp, the membrane and thinset product names, the heat mat resistance readings before and after setting, the tile lot number, and every material receipt behind the job.

Keel keeps that on the phone in the bathroom you just finished. The invoice goes out from the site with your own numbering, your logo, your brand color, and a payment link the customer scans as a QR code before you load the wet saw. The membrane bucket, the bag of leveler, the blade, and the dump fee get photographed and read on-device by Apple Intelligence. The runs to the tile shop log as trips. Nothing leaves the device: no account, no login, no bank connection, no cloud, and an App Store privacy label that reads Data Not Collected. Free is $0 with unlimited invoices, receipts and mileage, and Keel Pro is a one-time $249.99 Lifetime purchase rather than a subscription. At year end the Accountant Pack exports a CSV plus a one-page summary PDF, and the whole year leaves as a single file.

Frequently asked questions

What should a tile installation invoice include?

The room and address, the dates worked, who supplied the tile, and then separate lines for demo, substrate prep, waterproofing, each tiled surface at its own square-foot rate, linear-foot items like curb, profile and silicone, and each item priced per unit such as niches, benches and thresholds. Close with the cure and use restrictions in writing.

Should tile setters charge more for walls than for floors?

Yes, and the invoice should show both rates so the difference is visible rather than argued. Wall tile has to be held in place until the mortar grabs, the layout has to land correctly at the ceiling and in the corners, and there is no gravity helping. Ceiling work sits above wall work for the same reasons, only more so.

How do I bill tile waste when the customer supplied the material?

Put the waste percentage in writing on the estimate before they order, by pattern: roughly 7–10% for a straight lay and 15–20% for diagonal or herringbone. On the invoice, record the actual square footage consumed as waste and list the unopened boxes you handed back. It costs nothing and it prevents the box count argument entirely.

Why is waterproofing a separate line on a shower invoice?

Because it is a separate system with a separate cost, and because customers routinely believe cement board is already waterproof. Naming the number of coats, the square footage covered, and the 24-hour flood test turns an abstract category into work that was performed on specific days. It also creates the record you need if a leak claim ever arrives.

What is the difference between a tile estimate and a tile invoice?

The estimate prices the room as measured, including conditions you cannot confirm until the old floor is out, written as rates with no dollars in the total. The invoice records which of those conditions turned out to be real and what the customer added along the way. Fixed lines should not move between the two documents.

How do I price a small bathroom where the square footage is low?

Not at your open-floor rate. A 40 ft² bathroom has a cut on nearly every piece, plus a toilet flange, a threshold and four corners, so your square feet per hour collapses. Track that rate separately, or set a minimum job price for wet rooms, and the small jobs stop subsidizing themselves out of your margin.

---

This article is general information, not professional or tax advice.