The short answer: Yes, but not the way most installers have been sold them. Facebook ads work for double glazing companies when every enquiry is answered within 30 seconds, rung within five minutes, and booked in as an appointment with a time and a date the homeowner confirmed. Most installers who say they don't work were sold a name and a phone number.
Key points
- In our last 45 sales calls, 3 in 10 window and door owners named an agency that took their money and delivered nothing.
- The four failures we hear most: a guarantee that was never honoured, repair jobs instead of installs, nobody home at the appointment, and an agency that stopped picking up.
- All four are the same failure. You bought a name and a phone number, when you needed a time and a date the homeowner confirmed.
- Built properly, it's four parts: ads built for the jobs you want, a page that qualifies, a WhatsApp reply within 30 seconds and a phone call within five minutes, then an appointment confirmed on WhatsApp with reminders.
- If nobody in your business can ring a new enquiry inside five minutes, don't spend a penny on ads yet.
Why do so many window companies say Facebook ads don't work?
Because for them, they didn't. But it wasn't Facebook that failed. In our last 45 sales calls, 3 in 10 window and door owners named an agency that had taken their money and delivered nothing. No leads, no sales, nothing.
They're right to be angry. What they bought didn't work. The mistake is blaming the platform for what the agency built on top of it, or didn't build.
What goes wrong when an agency runs your Facebook ads?
The same four stories come up again and again on our calls.
The guarantee that was never honoured
A window and door owner in Devon was guaranteed 40 leads a month. After three months of fighting, he got half his money back. No sales, no leads. A guarantee is only worth something if the person giving it is still answering the phone when it's broken.
Repairs, not installs
Another installer got enquiries, but they were the wrong ones. "Fix this window lock." A single door here, a single window there. Not the full-house jobs that keep fitting teams busy and carry the big margins.
Nobody home when the van turned up
This one hurts most. The appointment was "confirmed", the sales rep drove out, and nobody was at the house. That's an evening of your rep's time and your fuel spent quoting someone who isn't there.
The agency that stopped picking up
When it wasn't working, the agency went quiet. No calls back, no answers, no plan. The installer was left with a bill and nothing to show for it.
Want to see what booked appointments would look like for your firm?
Why are all four the same problem?
Because in every case, what the installer bought was a name and a phone number. What they needed was a time and a date the homeowner had confirmed.
An appointment worth sending a rep to has five things in it:
- A homeowner, not a tenant or a landlord's agent.
- They know what they want: one window, a set of bi-fold doors, or six windows and a door.
- A time and a date they've confirmed.
- They're in your area, so you're not driving two hours to quote.
- They're price qualified, so nobody is shocked at the kitchen table.
A guaranteed number of names fixes none of that. A booked appointment fixes all of it.
What's the difference between a lead and a booked appointment?
A lead is a name and a number someone still has to chase. A booked appointment is a homeowner who has already agreed to a time and a date, and you can see every appointment in the portal.
| Compared | A lead | A booked appointment |
|---|---|---|
| What you get | A name and a phone number | A homeowner with a time and a date they've confirmed |
| Who they are | Anyone who filled in a form, repairs included | A homeowner in your area who knows what they want replaced |
| Who chases it | You or your office, when you get round to it | A WhatsApp within 30 seconds, then a phone call within five minutes |
| Will they be in? | You find out when the van turns up | Confirmed on WhatsApp, with reminders before the day |
| What you can check | That it arrived | Who booked, who sat and what sold |
What do Facebook ads look like when they're built properly?
Four parts, and each one does a job the others can't.
1. Ads built for the jobs you want, not just a click. The angles that work for installers: making it yours, a real customer's story, a hook built around the town you work in, or an offer with a reason to act now. See real ads we've made for installers, and how we get them filmed on your own jobs.
2. A page that qualifies, not just a contact form. Are they a homeowner? If the answer is no, they don't get to leave their details. Do they want the work done in the next couple of months, or in six months to a year? If it's later, we stay in touch until they're ready. And are they in your area? There's no point sending you enquiries you can't drive out to quote.
3. Answered in the first five minutes. Within 30 seconds of the enquiry coming in, the homeowner gets a WhatsApp message from your verified business account. If they don't reply, they get a phone call from our team within five minutes. That call finds out where they are with the job and whether they're price qualified.
4. Confirmed and in your diary. The appointment is confirmed on WhatsApp, the homeowner gets reminders so they know it's coming, and it goes straight into your calendar.
Is the problem the leads, or what happens after the enquiry?
Mostly what happens after. Installers using Business Pilot turned 40.9% of their enquiries into sales in September 2026 (Business Pilot Barometer, reported by Window News, 1 October 2026). Put the other way, about six in ten enquiries never become a job, even for firms with a proper system behind them.
So the enquiry is only the start. An enquiry that nobody rings for two days isn't a Facebook problem. It's a diary problem, and more ads won't fix it.
What does it look like when it works?
Greencastle Windows and Doors, in Dundee, had 41 homeowner appointments in one month, which led to over £80,000 of window and door sales. That's from their own sales sheet. Same Facebook, same homeowners. The difference was what happened after someone tapped the ad.
Want to talk it through for your area?
Should you run Facebook ads for your window company yet?
Only if you can answer every enquiry fast. Facebook is not a lead source. It is how someone agrees to a time and a date. If nobody in your business can ring a new enquiry inside five minutes, do not spend a penny on ads yet.
Fix that first, by hiring, by rota, or by getting someone to do it for you. Then the ads have something to land in.
Quick answers
Do Facebook ads work for double glazing companies in the UK?
Yes, when the enquiry is answered within minutes and booked in as a confirmed appointment. Most installers who say they don't work were sold names and numbers, not appointments.
Are Facebook leads for double glazing any good?
They can be, if the page in front of them asks the right questions first: homeowner, timescale and area. A bare contact form lets anyone through, including repair jobs and people who aren't ready for a year.
How fast should I reply to a Facebook enquiry?
As fast as you can. We send a WhatsApp within 30 seconds and follow it with a phone call within five minutes if there's no reply. If nobody can ring inside five minutes, sort that before you spend on ads.
Can I run Facebook ads for my window company myself?
You can. The ads are the easy bit. The hard bit is answering every enquiry within minutes, evenings and weekends included, and confirming every appointment so someone is home when your rep arrives.
Ready to see the numbers for your firm?