Be window-savvy before you buy
Double glazing is a big spend, and the sales playbook is well worn. Learn the classic buyer mistakes, spot the tricks, then compare quotes on your terms.
- Know the pressure tactics before a rep is sitting at your table
- Understand what a fair price and a real discount look like
- Check credentials, guarantees and deposit protection properly
- Compare like-for-like quotes from vetted local installers
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The top window buying mistakes
These are the traps that catch homeowners out again and again. Read them once and you’re already ahead of the average buyer.
- Signing on the first visit. “Today only” prices are a tactic, not a deadline — a fair quote is still fair next week.
- Judging on headline price alone. The cheapest number often hides a thinner spec, weaker glass or a shorter guarantee.
- Skimming the small print. Deposit terms, cancellation rights and what’s actually included live in the fine detail.
- Not checking credentials. Anyone can print a logo — verify FENSA or CERTASS registration and real reviews.
- Paying a large deposit unprotected. Know how your money is safeguarded before any of it changes hands.
- Taking one quote. Without two or three like-for-like quotes you’ve no idea whether you’re being looked after.
Not sure which mistake could catch you out?
Our savvy-buyer guides walk through each one in plain English.
Read the buyer mistakes guideSales tactics to watch for
None of these mean a company is dishonest — but recognising them keeps you in control of the conversation.
The “manager’s discount”
A phone call to head office that magically halves the price. A genuine price doesn’t need theatre.
The disappearing deadline
Sign tonight or the offer’s gone. Real quotes hold long enough for you to compare them.
The anchored “full price”
An inflated starting figure exists only to make the “discount” feel generous.
The show-home “deal”
Cheaper if you let them use your house as a display. Usually just a closing line.
The rushed contract
Paperwork slid across the table with “just sign here.” Always read before you sign.
The vague guarantee
“Fully guaranteed” means little until you know who backs it, and for how long.
Everything you need to buy smart
Ten short, no-nonsense guides that turn a daunting purchase into a confident one.
Window buying mistakes to avoid
The full rundown of the traps that catch buyers out — and how to dodge each one.
Read guide →Avoiding high-pressure sales
Stay calm and in control when a rep turns up with a “today only” deal.
Read guide →Price & “discount” tricks to spot
How anchoring and fake discounts work — and what a fair window price looks like.
Read guide →Reading the small print
The contract clauses that matter, from cancellation rights to what’s included.
Read guide →Deposit & payment safety
How to keep your money protected and never over-pay upfront.
Read guide →Checking installer credentials
Verify registration, insurance and reviews before you let anyone quote.
Read guide →Guarantees worth having
What a genuine, insurance-backed window guarantee should actually cover.
Read guide →When cheap windows cost more
Why the lowest quote can be the most expensive decision you make.
Read guide →Questions that catch out installers
The straight questions that quickly reveal who’s worth trusting.
Read guide →Getting quotes the savvy way
How to gather and compare like-for-like quotes without the hassle.
Read guide →Ready to get quotes the savvy way?
Installers in many areas have survey appointments this month. Compare free, no-obligation quotes from vetted local installers — no pressure, no obligation.