How to Choose Reputable Glass Fitters
Choosing the right glass fitter makes a big difference in safety, quality, and cost. Here are some practical steps to help you pick a reputable one:
1. Verify Insurance & Guarantees
Ask if they carry public liability insurance.
For replacement windows, a FENSA/CERTASS company must give you an insurance-backed guarantee (usually 10 years).
2. Look at Reputation & Reviews
Use Checkatrade, TrustMark, or Which? Trusted Traders — all vet companies before listing them.
Check Google Reviews and local Facebook community groups for unfiltered feedback.
Here at Preston Glass and Glazing we have over 20 years of Yell experience – check out our Yell Reviews here
3. Check Experience & Specialisation
Some focus on domestic glazing (windows, doors, conservatories), while others specialise in commercial shopfronts or custom glasswork.
Ask how many years they’ve been operating locally. Established businesses are less likely to disappear.
4. Compare Quotes Properly
Get at least 3 written quotes — they should list materials (e.g., Pilkington glass, double/triple glazing spec), labour, VAT, and guarantees.
Be wary of “too good to be true” low prices.
5. Warranties & Aftercare
A good fitter should offer:
10-year guarantee on double glazing.
Issues to Watch Out For with UK Glass Fitters
1. No Written Guarantee
Some fitters may offer “verbal” guarantees only — avoid this.
In the UK, reputable companies normally provide a 10-year insurance-backed guarantee on double glazing.
2. No Proof of Insurance
If they don’t have public liability insurance, you could be personally liable if there’s damage or injury during fitting.
3. Vague or Cheap Quotes
Watch out for:
Very low quotes compared to others (often cutting corners on materials or workmanship).
Quotes that don’t list glass type, thickness, frame spec, VAT, or labour.
4. Poor-Quality Glass or Frames
Some installers use cheap, non-compliant glass or uncertified frames.
Look for British Standards Kitemark or reputable suppliers like Pilkington.
5. Pressure Sales Tactics
Some double-glazing firms still use “hard sell” methods (big discounts if you sign today, exaggerated energy savings).
A good fitter should give you time to compare options.
6. No References or Portfolio
If they can’t show photos of past work or provide customer references, it’s a red flag.
7. Hidden Extras
Some firms underquote and then add costs later (e.g., disposal of old glass, scaffolding, trims).
Always ask if the price is all-inclusive.
8. Not Local or No Fixed Address
Be cautious of firms without a proper business address or only a mobile number.
“Fly-by-night” companies can disappear quickly if something goes wrong.
9. Aftercare Neglect
Ask how they handle call-outs if there’s a problem (e.g., misted units, sticking hinges).
Poor aftercare is one of the biggest complaints UK homeowners have about glass fitters.
Clear aftercare (what happens if seals fail, hinges break, or condensation forms).
10. Professionalism & Communication
Do they respond promptly and in writing?
Are they happy to provide references and past project photos?
A professional attitude early on usually means good customer service later.
If you require further information then don’t hesitate to contact us