Price Your Sash Windows in Minutes
Most window companies make you book a visit before you see a single number. We don't. Our calculator gives you a clear, itemised guide price for made-to-measure timber sash windows straight away — so you can plan your budget today, not next week. When you're happy with the figure, turn it into a firm quote with one click.
How the Calculator Works
- Enter your dimensions. Add the width and height of each sash window. Not sure how to measure? Our measurement guide walks you through brick-to-brick and exact sizing.
- Choose your specification. Pick your glazing (double, triple or passive), colour, Georgian bar pattern and opening style. The price updates live as you go.
- See your guide price instantly. Get an itemised figure with no obligation. Save it, add more windows, or send it to us for a firm quote.
What You Can Price
The calculator covers every option that affects the cost of a bespoke sash window:
- Size — priced per m², with degressive pricing so larger windows cost less per m².
- Glazing — double (U-value 1.4), triple (1.2) or passive glass (0.8) for ultra-low-energy projects.
- Colour — white as standard, or any RAL / Farrow & Ball colour, single or dual.
- Georgian bars — add any pattern and see the exact cost per bar update instantly.
- Glazing bars, horns & detailing — match the authentic look of your period property.
Sash Window Prices at a Glance
To give you a feel before you start, here are typical guide prices for double-glazed timber sash windows (supply only, ex-VAT):
| Size (W × H) | Guide price (double glazed) |
|---|---|
| 800 × 1200mm | From £815 |
| 1000 × 1500mm | From £1,210 |
| 1200 × 1800mm | From £1,560 |
Guide prices only — your exact figure depends on glazing, colour and bars. Use the calculator for an accurate price, or see our full sash window cost guide for a detailed breakdown.
What Affects Your Price
Size is the biggest factor, followed by glazing type, colour and the number of Georgian bars. A standard bedroom sash (800 × 1200mm) costs roughly half of a large reception window. Non-white colours add 5%, dual colour adds 15%, and each Georgian bar adds £15. Every price includes sealed double-glazed units with warm-edge spacers, PAS24 security and a 10-year warranty. For the full story on what drives the cost, read our complete cost guide.
Why Price Online With Us
We sell direct — no showrooms, no salespeople, no middlemen. That's why our prices are competitive against national brands charging £3,000–£5,000 per window. You design and price your sash windows online, and we manufacture them to order in our UK workshop, with 4–5 week delivery. The calculator puts you in control: see every option, every price, and only get in touch when you're ready.
🇬🇧 Made in UK · 4–5 Week Delivery · No Account Needed
Get Your Exact Sash Window Price
Choose size, glazing, colour and bars. The calculator prices it instantly — free, with no obligation.
Start My Price CalculationSash Window Calculator — FAQ
Is the calculator free to use?
Yes. It's completely free, needs no account, and there's no obligation. Price as many windows as you like, as often as you like.
Is the calculator price my final price?
It's an accurate guide based on what you enter. We confirm the final figure after a quick check — and a site survey if we're installing.
Can I price a whole house?
Yes. Add every window and the calculator totals them for you, applying degressive pricing automatically as the order grows.
What's included in the price?
Supply-only prices include sealed double-glazed units with warm-edge spacers, PAS24 security and a 10-year warranty. Installation is quoted separately after a survey.
Does it work on a phone?
The 3D calculator runs best on a tablet or desktop. On a phone, request a quick quote and we'll price it for you.