Harpenden, Hertfordshire
Aluminium Windows in Harpenden
Premium aluminium casement windows manufactured in Leeds using Cortizo systems. 2–10 day lead times, fleet delivery, and manufacturer-direct pricing for trade and retail.
- Lead Time
- 2–10 Working Days
- Max Frame Size
- 5,000 × 2,400mm
- U-Value
- From 1.4 W/m²K
- Glazing Range
- 28–44mm
Harpenden. Photo by HMIAN, CC BY-SA 4.0
Aluminium Windows for Harpenden homes and sites
Windows are usually a whole-house order rather than a single opening, so colour consistency and accurate measurements matter more than lead time. Ordering every window together is the simplest way to keep the colour and finish consistent across the property.
We supply aluminium windows across the AL postcode area and the rest of Hertfordshire, including St Albans (5 miles due south), Luton (5 miles north-north-west) and Stevenage (9 miles north-east).We manufacture and deliver — your own installer or builder does the fitting.
Getting it to Harpenden
- Lead time: 2–10 working days from confirmed sizes
- Delivered on our own fleet to a fixed date — Harpenden is 146 miles south-south-east of Leeds, about 3½ hours by road via the A1 and A14
- Made to the sizes you or your installer confirm — we don't install
Around Harpenden
Harpenden is in Hertfordshire. There are 11 other places we deliver to within 20 miles of it. Heading out of Harpenden, the nearest we list are Luton to the north (5 miles), Stevenage to the east (9 miles), St Albans to the south (5 miles) and Berkhamsted to the west (10 miles). We list 4 other places in Hertfordshire; the furthest from Harpenden is Watford, 11 miles due south.
Also within 20 miles: Barnet (13 miles), Gerrards Cross (18 miles), North London (19 miles), Beaconsfield (19 miles), Aylesbury (20 miles), Hampstead (20 miles).
Recent deliveries near Harpenden
Since June 2026 we've delivered aluminium windows within 10 miles of Harpenden, to postcode districts including AL1, HP2, LU4, WD7 and WD25.
From our own delivery records, by postcode district. Trade orders are recorded at the installer's delivery address. Updated 23 October 2026.
Aluminium Windows — key specification
The same specification applies wherever we deliver. For the full detail, drawings and options, see the Aluminium Windows product page.
- Slim Cortizo aluminium sightlines
- Side hung, top hung and fixed light sash options
- Thermally broken profiles — U-values from 1.4 W/m²K
- Frame sizes up to 5,000 × 2,400mm
- Multi-point espagnolette locking as standard
- Fleet delivery to a date given when you order
Aluminium Windows in Harpenden — questions we get asked
What U-value can I get on aluminium windows in Harpenden?
From 1.4 W/m²K, depending on the glass specification. The Building Regulations limit for replacement windows in England is 1.4 W/m²K, so choose the glass with that in mind — ask us for the figure for your chosen build-up.
Can I have different colours inside and out?
Yes — dual-colour (a different colour inside and out) is available at no extra charge on stock finishes. A dark exterior with a white interior is a common combination.
What's the lead time for aluminium windows in Harpenden?
2–10 working days from confirmed sizes — the same wherever you are. Harpenden is about 146 miles south-south-east of our Leeds factory, and every order is delivered on our own fleet, to a fixed date confirmed when you order.
Do you offer trade prices on aluminium windows in Harpenden?
Yes. Installers, builders and fabricators across the AL area — Harpenden, St Albans, Luton and Stevenage — can open a trade account: manufacturer-direct pricing, no minimum order value and a dedicated account manager.
Before you buy aluminium windows
Other products for Harpenden
Aluminium Windows for Harpenden — get a price
Send your sizes or drawings and we will come back with a price, a lead time and a delivery date.
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