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Double Glazing Prices 2025: How to Get the Best Deal (Without Fake Discounts)
Double Glazing Prices 2025: How to Get the Best Deal (Without Fake Discounts)
📌 Pricing at a Glance: The KJM Promise
- No “Anchor” Prices: We give you our best price first. No starting high and dropping 50%.
- No Pressure: We send quotes by email or post. We don’t sit in your living room until you sign.
- The Which? Advice: Always check a company’s financial health and trading history (KJM has been trading since 1983).
The phrase “Double Glazing Salesman” is unfortunately a byword for high-pressure tactics, confusing discounts, and “sign today” deadlines. For decades, national firms have trained their staff to manipulate homeowners into paying inflated prices.
At KJM Group, we do things differently. As a Which? Trusted Trader, we follow a code of conduct that puts transparency first. Here is how to spot the scams and get a genuinely fair deal in 2025.
Table of Contents
1. Anatomy of a “Fake” Discount
If a company offers you a “50% Discount” or a “Scrappage Scheme” deal just for letting them put a sign in your garden, be very careful. This is a pricing strategy called Anchoring.
The “Price Drop” Routine
The Tactic
The salesman quotes a shockingly high price (e.g., £20,000 for 8 windows).
The Goal
To set a high psychological baseline, so any reduction looks amazing.
The Tactic
He calls his manager to secure a “special” discount just for you.
The Reality
It is theatre. The lower price was the target price all along.
The Tactic
“This price is only valid if you sign tonight.”
The Advice
Never sign on the spot. A reputable company will give you 30 days.
2. What ‘Which?’ Says You Should Do
As an independent consumer champion, Which? External advises homeowners to look beyond the price tag.
⚠️ The Which? Checklist for Buying Windows
- Get at least 3 quotes: This highlights any wild price variations.
- Check Financial Health: Use Companies House to see if the firm has been around for more than 10 years. (A 10-year warranty is useless if the company folds next year).
- Avoid “Felt Pressure”: In a Which? survey, 52% of people said “No Pressure” was the main reason they chose an independent local firm over a national chain.
3. The Price Hierarchy: What Costs What?
Understanding how different materials affect the final bill is the best way to budget. While we cannot give exact prices without a survey (as every house is different), this hierarchy shows how options compare relative to standard white uPVC.
Relative Price Guide
Material
White uPVC Casement
Relative Cost
£ (Baseline)
Material
Coloured Foils (e.g. Grey)
Relative Cost
££ (+15-20% approx)
Material
Aluminium / Timber
Relative Cost
££££ (+50-80% approx)
4. The “Hidden Extras” Checklist
A low quote is not always a good quote. If a price seems too good to be true, check if the following are included. At KJM, our quotes are fully inclusive.
- VAT: Is it included or added at the end?
- Scaffolding: Required for working at height. Is this extra?
- Waste Removal: Will they take your old windows away?
- Making Good: Will they repair internal plasterwork?
- Trim & Cills: Are the finishing touches included?
5. How to Actually Save Money
You don’t need a fake sale to get a better price. You just need to make smart specification choices. Here are legitimate ways to lower your quote without sacrificing quality:
- Material: uPVC is significantly cheaper than Aluminium or Timber.
- Openers: Fixed panes cost less than opening sashes. Do you really need every single window to open?
- Colours: Standard White is the most affordable. “Stock” colours (like Anthracite Grey) are cheaper than bespoke RAL colours.
- Repair vs Replace: If your frames are good but the glass is misty, ask for a glass-only replacement quote.
📚 Related Guides
- Compare Materials: uPVC vs Aluminium Cost Comparison
- Design Guide: How to Choose the Right Front Door
- Efficiency: Window Energy Ratings Explained
6. Frequently Asked Questions
We price every job as competitively as possible from the start. We don’t artificially inflate prices just to offer a “discount” to specific groups. We believe in one fair price for everyone.
Online “price calculators” are often lead-generation tools that give unrealistic estimates to get your phone number. Real window pricing depends on survey measurements, scaffolding needs, and finishing trims that a computer cannot see.
Often, yes. Because we don’t have national TV advertising campaigns or commission-based sales teams to pay for, our overheads are lower. We pass those savings on to you.
Mark Pearce is a highly experienced specialist in the double glazing industry, having built his knowledge from the ground up through hands-on experience in installation, manufacturing, sales, and business management. Beyond his role at KJM, Mark is a keen blogger, writer, and traveller, often sharing insights on the latest innovations in the home improvement industry.
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