How Wigan Window Fitters Can Use AI to Quote Double Glazing Installations Faster
You're a window fitter based in Standish. You recently worked out you were spending two full days a week doing nothing but site visits to measure up and write quotes. Half those quotes never converted. That's a significant chunk of unpaid time going to waste every fortnight, and it's a problem common across Wigan's double glazing and window installation trade. AI won't replace the site survey entirely, but it can cut the admin around quoting to a fraction of what it currently takes.
Why the Quoting Process Takes So Long
Most window fitters end up doing three things manually that eat time: visiting the property to measure (sometimes unnecessarily early in the process), calculating material costs from a price list, and then writing the quote from scratch in Word or on a generic template.
If a customer in Leigh calls about six casement windows and a front door, you're typically looking at a half-day commitment before anything's been agreed. Then if they want a revision, the whole thing has to be reworked.
The fix isn't to skip the survey. It's to front-load the process so the survey only happens when the job is serious.
Getting Customers to Provide Their Own Measurements First
Before you visit, AI can help you create a simple measurement guide to send to enquirers. Use ChatGPT to write a clear, plain-English guide that explains how to measure window width and height from the reveal (not the frame), how to note which way casements open, and what photos to take.
Send this guide with every new enquiry. A good chunk of customers will come back with usable numbers. You can then produce a ballpark quote from those figures without leaving the van.
Prompt to try:
"Write a simple window measurement guide for homeowners in plain English. Include width and height from the reveal, how to photograph the frame condition, and how to note any bay configurations. Keep it under 300 words."
This becomes a PDF you send within minutes of receiving an enquiry.
Building a Quote Template with AI
Once you have measurements, you need a quote template that covers everything without you having to think it through from scratch each time. Use ChatGPT or Claude to build a master quote document that includes:
- Customer details and property address
- Number of windows, style (casement, tilt-and-turn, sash), and material (uPVC, aluminium, timber)
- Glass specification (double or triple glazed, A-rated or above, argon-filled)
- Energy rating (confirm the Window Energy Rating the specification achieves)
- Frame colour inside and out
- Furniture and handles
- Labour: removal of old frames and disposal, fitting, sealing, and making good
- Guarantee terms (frames, glass units, installation)
- Payment terms
Ask the AI to structure this as a fillable document. You copy it, paste in the customer's details, and adjust the line items. No starting from a blank page every time.
Calculating Material Costs Without a Spreadsheet
If you're pricing from a supplier's rate card, AI can help you build a simple calculation prompt. Give ChatGPT your cost-per-window prices for standard sizes, then ask it to create a pricing formula you can use in a Google Sheet or even just ask as a follow-up question.
For example: "I'm quoting for 4 x 1200mm x 1200mm casement windows at £X each supply price, plus one 900x2100 front door at £Y. My fitting charge is £Z per window and £W for the door. Calculate my total supply and fit price and add 20% VAT."
You get the number in seconds. Then you check it, adjust for anything unusual (awkward access, scaffold required, non-standard frames), and put it into your quote template.
Including Energy Ratings and Warranty Details
Customers buying double glazing in Wigan increasingly ask about energy ratings, particularly since energy costs rose. Including this information in your quote sets you apart from fitters who send a one-page price with no supporting detail.
Use Claude to write a short section for your quote that explains:
- What a Window Energy Rating (WER) means
- Why A-rated units reduce heat loss compared to older single or basic double glazing
- The manufacturer's guarantee on sealed units (typically 10 years) and frames (typically 10 years)
- Your own installation guarantee
Write it once, save it as a standard block, and paste it into every quote. It takes 30 seconds and makes your quote look thorough.
Producing a Professional PDF Quote
Google Docs or Microsoft Word both export to PDF. Use ChatGPT to help you design a clean quote layout if your current one looks rough. Ask it to describe the layout and sections, then build it once in Docs.
If you want something more polished, Canva has business document templates you can adapt. Add your logo, your contact details, and your company colours. Export as PDF. The whole thing looks like it came from a bigger company, which builds confidence in Leigh, Standish, and anywhere else in Wigan you're quoting.
Automating Follow-Up After Three Days
Most window fitters send a quote and then wait. If the customer hasn't replied in a week, they chase once by phone, often awkwardly.
Set up a simple system using Zapier or your email platform so that if no reply has come in after three days, a follow-up message goes out automatically. Use ChatGPT to write that message:
"Write a polite follow-up email for a window fitter to send three days after sending a quote. Mention the quote is still available, offer to answer any questions, and suggest a quick call to go over the options. Keep it under 100 words. Professional but not pushy."
Save that message as a template. Paste it into your follow-up. Or connect it through Zapier so it sends without you touching it.
This alone recovers jobs that would otherwise go cold. Customers get busy. A timely nudge at three days, when they're still in decision mode, works better than chasing after two weeks.
Handling Revisions Without Starting Again
When a customer asks for a revision (different frame colour, add an extra window, change the glass spec), AI makes it quick. Copy the original quote text into ChatGPT and say: "Update this quote to change the frame colour to anthracite grey and add one additional top-hung casement window at 900x600. Recalculate the total using the same pricing structure."
It produces the revised version in under a minute. You check the numbers, adjust if needed, and send it the same day rather than putting it in a pile for the end of the week.