By Greg Allan, tradesman and creator of Data First Coaching
Why does my waterproofing business feel flat out but the bank balance doesn't move?
Most waterproofers measure how busy they are by how many wet areas, balconies and basements are on the board this week, not by what each job actually recovers. A job can be finished, signed off and invoiced, and still have quietly lost money, because getting the job done is not the same test as whether it paid for the hours it consumed.
Waterproofing is built around waiting. Membrane cure time, flood test windows, and the gap before a builder or tiler can get back on site for the next trade all take real hours out of the week, and those hours still get paid even though nothing is visibly happening. If that time never gets attributed back to the job it came from, it disappears into overheads instead of showing up as the true cost of that balcony or that bathroom.
Where does the real margin disappear between the membrane and the certificate?
The gap between a quoted margin and a real margin on a waterproofing job usually sits in the hours between the pour and the certificate, not in the materials or the labour on the tools. Re-inspections, chasing a flood test sign off, and travel between small shower and wet area jobs all eat paid time that rarely gets billed anywhere.
A remedial callback on a warranty job is the clearest example. The original bathroom or balcony was quoted and invoiced at a healthy margin, the defect shows up later, and someone gets sent back under warranty to fix a leak at no charge, because that is what a warranty means. That visit still costs wages and travel. If it is never tracked against the original job, the business has no way of knowing the job's true margin was lower than the number on the invoice, and every waterproofer carries some of this across a book of jobs at any one time.
What number actually tells you if a waterproofing job made money?
The number that tells you the truth is billable hours against hours paid, not revenue against the cost of materials. Compliance paperwork, flood test certificates and warranty rectification all sit on your books as paid time whether or not a customer is ever charged for them, and that is the test that shows whether your waterproofing business is genuinely profitable or only looks busy.
Most owners read their numbers the other way around: good revenue in the bank gets taken as a good year, without checking whether each job, once every paid hour against it is counted, actually recovered what it cost. If you run wet area and shower work for builders, remedial defect jobs for insurance work, and roof deck membranes for a developer, you can have three very different real margins hiding under one tidy revenue figure, and the only way to see the difference is in your own job-level data, because remembering that a job went fine is not evidence.
What happens when a waterproofer finally sees the true cost of a job?
Picture a waterproofer who could never get a straight answer on what it actually cost to run a job. Every non-billable hour, cure time, re-inspections, travel between sites, was being spread across jobs as a flat overhead figure, and that overhead was so heavy it made almost every job on the board look like it lost money. Stripping those hours out the other way dropped the figure so low it was obviously wrong too.
The fix was not a better guess. An AI agent was set up to pull the actual wages and overhead straight from the business's live data and work out the true cost of running the business, with billable hours properly factored in rather than assumed. The non-billable and overhead cost now sits in its own bucket instead of being smeared across every job, and the figure stays accurate because the agent keeps pulling fresh numbers instead of being calculated once and left to go stale.
How can AI agents close the gap between quoted and real margin?
An AI agent is software that does a job the way you would do it yourself, using your prices, your wording and your rules, and for a waterproofing business that means it can watch the numbers you rarely have time to watch. Instead of discovering at the end of the month that margins were thin, you see it job by job, while there is still time to do something about it.
Data first means the agent starts from your own job and finance data, not a generic industry average, so it reflects how your business actually quotes wet area work, charges for flood test certificates, and handles warranty rectification. AI agents can also sit on the admin side of the business, following up a builder for a progress payment or a tiler for a signed variation, so chasing money does not compete with being on the tools.
Should you chase the money harder, or build a system that chases it for you?
Chasing harder is not the answer when the real problem is that there is no time left to chase at all. Waterproofers working through builders and tilers on progress claims and defect rectification are especially exposed to slow payment, precisely because being flat out on site leaves no hours in the week to follow up an invoice, and the gap between gross profit and net profit often shows up as money that is owed but never asked for.
The system that works is one that tracks who owes what and when it was last followed up, and does the asking on your behalf, in your tone, on a schedule you would actually keep to if you had the time. That turns collecting money from something that depends on how quiet the week is into something that happens regardless.
How does Data First Coaching approach this?
Data First Coaching, built by Greg Allan, starts from the waterproofing business's own job and finance data through the Trade Business Intelligence, not from a conversation about how busy the owner feels. It looks at billable hours against hours paid, job by job, to find where margin is actually leaking, rather than treating a tight bank account as the problem itself. Greg has described running his own business for years without tracking profitability on jobs: “I wasn’t tracking profitability on jobs. I was just going, yeah, I made some money there.” The how, including the systems built from that data, is worked through inside the Academy, among members who are open minded, innovative and willing to share, because the Trade Business Intelligence is powered by every member.
