7 mistakes window and door specialists make in quotes (and how to avoid them)

Problem: a window and door company in Northern Italy was issuing 180 quotes a year and closing 36 of them. Conversion: 20%.

Solution: we analysed the 7 mistakes that were burning opportunities and corrected the process in 90 days.

Result: 63 closed quotes out of 180. Same sales workload, 50.000 € more revenue per quarter.

The quotes folder that tells the whole story

A window and door specialist wrote to me on WhatsApp: "I did 14 quotes this month and closed 2. What am I doing wrong?"

We met in his office on a Thursday afternoon. I took the folder containing the quotes from the last six months and started to flick through them one by one. In two hours I found seven mistakes. Not technical mistakes, he knew his windows better than I did. Mistakes in the way he presented, calculated and followed up on the quotes.

Those seven mistakes, put together, were costing him about 200.000 € a year in lost revenue. Money that went straight to his competitors, without him even realising it.

Mistake 1: the quote arrives after five days

The first quote I opened was for a villa. Site visit on 4 March, quote sent on 10 March. Six days later. "I was on the job site all week, I did it on Saturday morning."

The problem is that the customer, in the meantime, has already received the quote from another window and door company who sent it in two days. The first quote to arrive gets 60-70% of the attention. The second one is compared. The third is often not even read.

If you lose just 4 quotes a year for this reason, with an average value of 16.000 €, that's 64.000 € of revenue vanishing. Not because the price is wrong. Because the document arrives late.

The fix is simple: create 3-4 templates for the most frequent configurations. With a ready template, preparation time drops from 3 hours to 40 minutes.

Mistake 2: a sheet of numbers without context

Three pages of lines: product codes, quantities, unit prices, total. Stop.

A quote done like this only lends itself to one comparison: the one on price. The customer takes your total, takes the competitor's total, and chooses the lowest. They have no other criteria by which to decide, because you haven't given them any.

A quote with context is different. The first page has a photo of a similar job, the calculation of specific energy savings, the guarantees highlighted, and a paragraph explaining why you chose that profile and that glass for that situation.

The customer understands that they are not comparing apples with apples. In 60-70% of cases, they choose the quote that gave them the most confidence, not the cheapest one.

Recovering even just 3 quotes a year with this approach, at an average value of 20.000 €, yields 60.000 €.

Mistake 3: only one option, take it or leave it

The customer who receives a single offer has two choices: yes or no. And when there is only one price, the question automatically becomes "can I find the same thing for less?".

Presenting three options changes everything:

Two things happen. The first: the customer no longer compares your quote with the competitor's. They compare your three options with each other. You define the playing field. The second: most choose the middle option.

Out of 40 quotes closed per year, even just 1500 € more in average value amounts to 60.000 € of additional revenue.

Mistake 4: zero follow-up after sending

Out of 180 quotes issued in a year, 112 had absolutely no follow-up notes. None. The quote was sent and that was it.

The customer does not call back. They have received three quotes, they lead a busy life, and they choose the offer of the window specialist who came forward first with something useful. Not with "Have you seen the quote?", which is the most useless question there is. But with a calculation of energy savings, a photo of a similar job, a reference in the area.

On those 112 quotes with no follow-up, average value 14.000 €, recovering even 10% with a serious system means 11 more projects. That's 154.000 €.

You didn't have to work more. You needed to send 3 messages over 20 days to each customer. A 10-minute job a day, if you have a method.

Mistake 5: margins calculated with the "30% and that's it" rule

The answer I hear in three out of four consultations: "I take the cost of the material, add the labour, and put 30% on top."

The problem is that this 30% takes nothing into account. Site visits, estimation, transport, waste, unexpected events on the job site, after-sales service. On a 32.000 € project, these hidden costs are easily worth 2500 € to 4000 €.

He thought he was making 28%. In reality, he was making half that. On 40 projects a year, this difference is worth about 78.000 €.

The solution is to track the real costs of every project for at least 3 months. After those 3 months you have the real numbers and you can calculate the correct markup for each type of job.

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Net margin24,2%

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Mistake 6: the quote looks like an insurance contract

Seven pages. Font size 9. Copy-pasted supplier product codes. General terms and conditions at the bottom, another two densely packed pages.

The average customer is not a technician. They don't know what "Uw 1.3 W/m2K" means and they don't care about your supplier's item code. They are interested in understanding what they receive, why it is worth that money, and how to proceed.

A readable format works like this: first page with a photo of a similar project, a summary of the benefits, total price with the three options. Inside pages with the details organised by room, in plain language. Last page with three steps to proceed, delivery times, direct contacts.

Those who adopted this format saw conversion rise by 6 percentage points in a few months. Same products, same prices. The only thing that had changed was how the quote presented itself.

Mistake 7: no data on what works and what doesn't

The last mistake is also the most subtle. Not tracking anything. Not knowing how many quotes you issue a month. Not knowing which type of work converts the most. Not knowing if quotes sent on a Monday morning close better than those from a Friday evening.

Without data, you cannot improve. You can only hope.

After three months of tracking, we discovered with a client that quotes for residential renovations were converting at 35%, while new builds were at 15%. The average value was similar. It meant he was dedicating the same amount of time to two categories with very different returns.

The necessary numbers are few: how many quotes you make a month, how much time passes between the site visit and sending, how many you close divided by type of work, what is the real margin per category. Five numbers on a sheet, updated every week.

The final bill

They do not add up in a linear way, because some mistakes overlap. But even taking 30-40% of these figures, we are talking about 130.000 € - 200.000 € a year that a window and door company leaves on the table due to process errors, not product errors.

How to correct, one month at a time

You don't need to do everything together. One mistake at a time.

Month 1: create the templates for the most frequent configurations and start sending out quotes within 48 hours.

Month 2: introduce the three options and redo the format of the quote.

Month 3: put in place a follow-up system and start tracking the numbers.

After six months the window specialist I mentioned at the beginning had gone from 20% to 35% conversion. The same 180 quotes, but 63 closed instead of 36. With an average value increased thanks to the three options.

If you recognize yourself in these mistakes

If you think "I make at least three out of seven", you're not short of customers. You're short on process.

You can start on your own: take the quotes from the last month, line them up, and ask yourself for each one: did it arrive on time? Did it have context? Did it have three options? Did I follow up? Do I know why I lost the ones I lost?

If you want to go faster, book 30 minutes with us. We will look at your numbers together and tell you where you are leaving money on the table. No commitment, no contract.