
Darlington, County Durham
Aluminium Windows & Doors in Darlington
Cortizo bifold doors, sliding doors, windows and roof lanterns for the DL area — made to your sizes in our Leeds factory, 50 miles due north, and delivered to Darlington on our own vehicles via the A1(M).
Darlington. Photo by Robert Graham, CC BY-SA 2.0
Delivering to Darlington
Our own fleet on scheduled regional runs
50 miles due north of Leeds — about an hour on the A1(M). You get a guaranteed fixed delivery date rather than a courier window.
Lead time: 5–12 working days
From confirmed sizes. We also cover Stockton-on-Tees, Bishop Auckland and Middlesbrough, so Darlington deliveries are usually grouped onto the same run.
Made in Leeds, delivered to DL
Every frame for Darlington is cut, assembled and quality-checked by our own team on Wellington Bridge Street before it leaves.
Surveys and fitting in Darlington
We survey in this area on planned visits — we will group your survey with other work nearby, which normally means a slot inside a week or two.
What we supply to Darlington
Every product below is made to your sizes and delivered into County Durham. Follow a link for the full specification for Darlington, or call us and we will talk it through.

Aluminium Bifold Doors in Darlington
Cortizo bifolds up to 7 panels, made to your sizes in our Leeds factory.

Aluminium Sliding Doors in Darlington
Large-pane sliding patio doors with slim interlocks and a low threshold option.

COR Vision Slim Sliding Doors in Darlington
Cortizo COR Vision — minimal 20mm interlocks for near-frameless glazing.

Aluminium Windows in Darlington
Casement windows with slim frames, dual-colour options and warm-edge glazing.

Roof Lanterns & Skylights in Darlington
Slim-bar aluminium roof lanterns and flat rooflights made to your kerb size.

Aluminium French & Heritage Doors in Darlington
Double doors with heritage detailing — a natural fit for period properties.

Aluminium Front & Residential Doors in Darlington
Single residential doors with multi-point locking and PAS 24 options.

Gable End Glazing & Fixed Frames in Darlington
Made-to-shape apex glazing and fixed frames for full-height openings.
Darlington — common questions
Do you deliver aluminium doors and windows to Darlington?
Yes. Darlington is about 50 miles due north of our Leeds factory — about an hour on the A1(M) — so your order travels by our own fleet on scheduled regional runs. You get a guaranteed fixed delivery date rather than a courier window.
How long does an order for Darlington take?
5–12 working days for a standard order in Darlington, measured from the point your sizes are confirmed. We make everything ourselves in Leeds rather than buying in finished frames, which is why the lead time holds. The 50-mile run down the A1(M) is the only part outside the factory.
Do you survey in Darlington?
We survey in this area on planned visits — we will group your survey with other work nearby, which normally means a slot inside a week or two.
Can trade customers order from Darlington?
Yes — trade pricing is available to installers, builders and fabricators in Darlington, Stockton-on-Tees, Bishop Auckland and Middlesbrough and across North East. Trade accounts get published lead times, a named contact, and delivery to site or to your yard in the DL area.
Get a quote for your Darlington project
Send us your sizes or your drawings. We will come back with a price, a lead time and a delivery date for Darlington.