By Greg Allan, tradesman and creator of Data First Coaching
Why does generic business coaching often fail a window and door installer?
Most business coaching is written for a trade in general, not for a window and door installer. The coach talks about leads and margin in the abstract, without ever looking at how a frame order moves from measure to install, or how a supplier lead time on glass can turn a tight renovation schedule into a late one. A window and door business runs on measure visits, supplier timelines and a crew that has to be on site when the frame actually arrives, and advice that ignores that rhythm rarely sticks.
The result is often a folder of worksheets that sit unused, because they describe a business that looks nothing like the one the owner runs. A coach who has never quoted a bifold door against a timber frame, or chased a supplier for an aluminium order running late, is coaching from outside the job.
What is really going wrong when the order book looks full but the margin does not move?
A busy order book can hide a shrinking margin, and most window and door installers only see it once the quarter is closed. The quote book fills with renovation jobs and new builds, the crew is flat out on install, yet the number that actually matters, gross profit margin on every job, can be quietly sliding while a full diary is read as a sign the business is healthy.
The real answer rarely sits in the diary. It sits in the gap between what a sliding door or a security door job was quoted at and what it actually cost once glass, flashing, supplier price rises and rework are counted in. Memory of “that job went fine” is usually a picture from weeks ago, not from the numbers this week.
What should you look for in a business coach for your window and door business?
Look for a coach who starts from your own numbers, not from a workbook built for every trade at once. A coach worth paying has usually run a trade business, so they recognise a renovation job that blew its hours or a showroom quote that undersold the glass. They should be asking what your data says about this month, not asking you to explain your business from memory, because that explaining is out of date within weeks.
A good coach also looks for the root of a problem rather than the symptom. If install crews keep running late on bifold and sliding door jobs, a good coach digs into where that starts, often a measure that was rushed or a supplier order placed without the right detail, rather than just telling the crew to move faster.
What should you ask before you sign up with a coach?
Ask whether the coaching starts from your own job and finance data, or from a generic framework applied to every business that walks in. Ask whether the coach has run a trade business, ideally one carrying the same pressures a window and door installer carries: supplier lead times, weatherproofing standards, measure accuracy, and a crew whose day depends on the frame turning up on time.
Ask what happens when a problem is handed to them. A coach whose answer to every issue is “hire someone” is not solving anything, just moving the cost. A coach worth paying can show you where a problem starts in your own numbers before they tell you what to do about it.
What are the warning signs that a coach is not right for your business?
The warning signs are consistent: a salesperson leading the conversation instead of a coach asking about your numbers, advice that would read the same for a plumber or an electrician as it would for a window and door installer, and a coach who has never run a trade business explaining how your crew should work.
Another sign is a coach who treats every window and door business the same, regardless of whether the work is mostly new build, mostly renovation and replacement, or mostly security doors and screens for existing customers. A double glazing specialist and a timber frame restoration specialist do not carry the same numbers, and a coach who does not ask the difference is guessing.
How do AI agents change the office work behind a window and door business?
AI agents can take on the non-billable office work that eats into an owner's week, the quoting follow ups, the supplier chasing, the invoice reminders, so the owner and the crew spend more time on customers and on site. An AI agent is software that does a job the way the owner would do it, using their own prices, their own wording and their own rules, not a generic template.
For a window and door installer, AI agents can chase a supplier when a frame order is running behind schedule, or follow up a renovation customer who has gone quiet after a measure visit, written the way the owner would actually write it. This is data first work: it starts from what is really happening in the business this week, not from a guess about what usually happens, and from that a builder or renovation customer gets the same reply every time, in the owner's own words.
How does Data First Coaching approach this?
Data First Coaching, built by Greg Allan, starts from the window and door installer's own numbers through the Trade Business Intelligence, not from an explanation of the business. It looks at where margin is actually sitting across quotes, measures and install jobs, and where a problem such as late installs or thin margins really begins, rather than treating the symptom the crew sees on site.
The how, the systems and the builds that follow, including where AI agents are placed in the business, is worked through inside the Academy, with members. The Academy is for owners who are open minded, innovative and willing to share, because the Trade Business Intelligence is powered by every member, for every member.
