By Greg Allan, tradesman and creator of Data First Coaching
Why can a tiling job finish on time and still quietly lose money?
A tiling job can run to schedule, the builder can pay the invoice on time, and the job can still lose money without anyone noticing for weeks. That is because a tiler's price is rarely one line. Waterproofing, membrane, screed, floor preparation, tile supply, breakage and labour all sit folded inside a single square metre rate or day rate. When any one of those is under-costed, the job still looks fine on the quote.
The gap only shows up later, in a bank balance that is thinner than it should be, often after the crew has already moved to the next bathroom or renovation. Most owners find the real cause of a slow profit leak is never found, because nobody goes back and checks the quote against what the job actually cost to run once materials and labour are booked.
The number that actually matters here is gross profit margin on each job, not the quote total. A quote can look healthy and still carry a margin that was never properly protected, because falls, membrane and large format handling were estimated rather than costed properly against the business's own rates.
Why is it so easy for a quote to slip through when the owner checks everything herself?
The busier a tiling business gets, the more tenders and quotes get written in a hurry, often squeezed between site visits after checking falls and existing waterproofing. A tiler juggling a bathroom reno, a shower recess rebuild and a splashback for three different builders has little time to re-read every tender line for levelling clips, adhesive type, large format handling or warranty terms on the wet area membrane.
These mistakes do not look like mistakes. They look like a normal quote, right up until the invoice doesn't match what the job actually cost once breakage, screed and tile supply are accounted for. This matters most in the growth phase, when a tiler is quoting across several builders and renovators at once and can no longer personally recheck every tender line the way they could when there was only one job on the board.
What can AI agents actually do for a tiling business?
AI agents can hold a tiler's own prices and rules, pull real supplier pricing into a quote, and give a second read of a tender before it goes out, catching a margin gap before it ever reaches the bank account. An AI agent is software that does a job the way the owner would, using their prices, their wording and their rules, rather than a generic template built for every trade.
For a tiling business, that means an agent can hold the business's own rates for waterproofing, screed and floor preparation, and check what a job was quoted to make against what it actually cost once tile supply, breakage and labour are booked. Data first thinking means that check starts from the business's own job numbers, not from memory of how the last bathroom went.
How can AI check a tiler's quote before it goes to the builder?
AI can turn raw job notes and site measurements into a structured quote that the owner still checks and edits before anything is sent, rather than trusting the first draft to go straight out. Applied to a tiler's tender, that is a second check against breakage allowance, falls, membrane coverage and warranty items before the price leaves the office.
Picture a tiler who used to do every quote and tender by hand, squeezing them in late at night after assessing falls and existing waterproofing on site. Checking every line herself, from membrane type to large format handling to day rate labour, it was easy for a detail to slip through unnoticed. She started running her quotes and tenders past an AI agent before they go out, so it reviews the job details alongside her, checking supply costs, breakage allowance and warranty clauses against the business's own numbers before anything reaches the builder.
Should a tiler rent software or build systems around their own numbers?
A tiler does not need to replace every tool they use, but can own a pricing and quote review system built on their own job data, shaped around how their jobs run, instead of renting software built for every trade at once. Some off-the-shelf measuring, invoicing or scheduling apps genuinely suit a tiling business, and the data shows which ones earn their keep.
Greg's point here is that there is no single right tool. The value is in testing what actually works against your own numbers rather than copying someone else's setup. That matters because software built for every trade treats waterproofing and tiling the same as any other trade's pricing, when a tiler's margin is usually won or lost in floor preparation, screed and the wet area detail, not just in the supply invoice.
How does Data First Coaching approach this?
Data First Coaching starts from the tiler's own job data through the Trade Business Intelligence, not from a generic checklist. It looks first at what each quote was built to make against what the job actually cost once waterproofing, screed, floor preparation, tile supply and breakage were booked, because that gap usually shows where the real problem starts, not where it first appears.
Greg Allan describes the standard this way: once the detail is structured properly, “he can just open the job, look at it, make some edits, and then send it.” The how, the setup and the build of that review step is worked through inside the Academy, with members, because the Academy is for owners who are open minded, innovative and willing to share, and the Trade Business Intelligence is powered by every member who joins it.
Looking for a business coach who starts from your numbers? Tiler Business Coach or every answer for tilers.
