By Greg Allan, tradesman and creator of Data First Coaching
Why does a job that looked profitable on the quote still lose money by the time it's invoiced?
A fabrication job can be quoted with a healthy margin on structural steel, aluminium or stainless and still land short once it has been cut, folded, welded and sent off for powder coat or galvanising. The quote priced the material at a supplier list price on the day it was written. By the time the job moves through the workshop, offcuts, extra cutting passes, a price rise on stock, or more stainless used on site than drawn, have all quietly taken a bite out of the margin that looked solid on paper.
Most fabricators do not see this happening at the time. The job gets invoiced, the next job starts, and the only sign something went wrong is a gross profit margin that drifts down over time without an obvious cause. The real cost does not show up at the quote stage. It shows up at the cutting bench, the folder and the welding bay, long before anyone checks what the job actually cost against what it was quoted to cost.
Why isn't pricing steel and aluminium on a markup the same as protecting margin?
Pricing on cost plus a markup feels straightforward. A fabricator buys a length of steel or a sheet of aluminium, adds a percentage on top for profit, and quotes the job. The trouble is a markup on material cost is not the same as the margin that actually lands in the business once labour, cutting, folding, powder coat and galvanising lead times are all accounted for.
A markup calculated on an old or assumed material cost overstates the profit sitting inside the job. If the price of steel, aluminium or stainless has moved since the last time it was checked, the gap between what was quoted and what was actually paid comes straight off the bottom line. On a job with several lines, structural steel on one line, stainless balustrade on another, powder coat and galvanising on a third, each line can look fine priced on its own. It is the blended result across the whole job, not any single line, that decides whether the job made money.
What number tells you if a fabrication job actually made money?
The number that tells the truth is the gross profit margin, checked at the moment you price the steel, aluminium and stainless on the job, not the markup you wrote on the quote and never looked at again. You need to protect and grow that number on every job that goes through your workshop, not treat it as a bookkeeping figure you glance at once a month after the invoices are already out.
For you as a fabricator, this means looking at what material cost actually landed in cost of sales against what you built into the quote, line by line and then blended across the whole job: steel, aluminium, stainless, labour, powder coat and galvanising together. A quote that looks fine on steel but loses ground on labour, or holds on labour but bleeds on wastage, still needs the whole picture read together. This is what checking your numbers data first looks like: reading the job by what actually happened, not by trusting the markup you wrote months before the material was ever cut.
How can AI agents catch material cost blowouts before they eat your margin?
An AI agent is software that does a piece of office work the way you would do it yourself, following your prices, your wording and your rules, without you sitting down to do it by hand. For your fabrication business, that means an agent can watch what you are actually being charged for steel, aluminium and stainless and flag it the moment a supplier price moves, instead of you finding out months later that cost of sales has drifted away from the quote.
Picture a fabricator whose steel and aluminium supplier sends every invoice as an emailed PDF. He has never had an easy way to see what he is actually paying for material, let alone spot when a price has crept up since the last order. An agent built around his own supplier invoices can gather those PDFs, build up his real materials pricing over time, and produce a discrepancy report showing where the quoted cost and the landed cost have pulled apart, now running on its own every month without him chasing it.
That is the shift. AI agents do not replace the judgement you bring to pricing a job with awkward shop drawings or a tight site install. They take the non-billable work of chasing invoices and checking prices off your plate, so your time goes into quoting and running the workshop rather than reconciling paperwork after the job is already losing money.
Should you build a buffer into every quote for wastage and offcuts?
Yes, and the reason is simple: wastage is not the same on every job, so pricing every job as if it will use exactly the material drawn is how your margin quietly disappears. Some jobs use less steel or aluminium than planned. Others, because of a tricky cut list, an awkward balustrade shape, or a run of offcuts you cannot reuse, use more.
Build a buffer into your pricing, rather than hoping wastage will not happen, so the jobs that run light on material cover the jobs that run heavy, instead of every bit of extra waste coming straight off that one job's margin. This is not padding your quote to protect against bad quoting. It is pricing honestly for how your workshop actually runs, where cutting, folding and welding never use material with perfect precision, and where your margin has to survive that across every job on the floor, not just the ones that go to plan.
How does Data First Coaching approach this?
Data First Coaching starts from the fabricator’s own numbers through the Trade Business Intelligence: what material cost actually landed against what each quote assumed, and where the blended margin across steel, aluminium, stainless, labour and finishing actually sits once a job is closed. Greg teaches that “you charge the cost of materials and labour and you add a markup to it for profit”, and the data shows whether that markup is holding or quietly being eaten before the invoice goes out. From there the coaching finds where the problem really starts rather than treating the symptom again on the next quote. The how, the systems and the builds, is worked through inside the Academy, with members, because the Trade Business Intelligence is powered by every member who is open minded, innovative and willing to share.
