Towns we cover in County Durham
Choose your town for local details. We list 14 towns in County Durham; if yours is not shown, we still cover it — enter your postcode in the guide price tool.
Choose a door type for County Durham
Prices are the same across County Durham; choose a door type for sizes, options and local details.
Main towns in County Durham
| Town | Postcode district | Nearest listed town | Daylight on 21 Dec |
|---|---|---|---|
| Darlington | DL1 | Newton Aycliffe (11 km north) | 7 h 16 min |
| Hartlepool | TS24 | Peterlee (12 km north-west) | 7 h 14 min |
| Stockton-on-Tees | TS18 | Billingham (3 km north-east) | 7 h 15 min |
| Durham | DH1 | Chester-le-Street (9 km north) | 7 h 13 min |
| Chester-le-Street | DH3 | Washington (6 km north-east) | 7 h 12 min |
| Billingham | TS23 | Stockton-on-Tees (3 km south-west) | 7 h 15 min |
| Stanley | DH9 | Chester-le-Street (8 km east) | 7 h 12 min |
| Consett | DH8 | Stanley (9 km east) | 7 h 12 min |
| Newton Aycliffe | DL5 | Bishop Auckland (8 km north-west) | 7 h 15 min |
| Bishop Auckland | DL14 | Newton Aycliffe (8 km south-east) | 7 h 14 min |
Postcode districts covered in County Durham
Our town pages for County Durham cover these postcode districts: DH1, DH3, DH8, DH9, DL1, DL5, DL12, DL14, SR7, SR8, TS18, TS21, TS23, TS24. Other postcodes in the area are covered too — enter yours in the guide price tool.
Daylight across County Durham
At the latitude of County Durham, the midday sun climbs to about 59° in late June but only about 12° in late December, when daylight lasts around 7 h 14 min against 17 h 18 min in midsummer. A south-facing sliding door lets that low winter sun deep into the room; on a west or south elevation, solar-control glass keeps summer afternoons comfortable.
Approvals in England
In England, a replacement sliding door is a controlled fitting under the Building Regulations. In an existing home, a door with more than 60% glazing must reach a U-value of 1.4 W/m²K or better (or a Doorset Energy Rating of band C) under Approved Document L, and glass in doors must be safety glazing under Approved Document K. We arrange compliance through a competent person scheme installer or by notifying Building Control, and you receive the certificate.
A new or wider opening in England needs Building Control approval for the structural work as well as compliance for the door itself under Approved Documents L and K. Expect structural calculations, a steel beam and, where a party wall is involved, notices under the Party Wall etc. Act 1996.
Sliding doors in County Durham: questions
Do you fit sliding doors across County Durham?
Yes. We survey and fit sliding doors in Darlington, Hartlepool, Stockton-on-Tees, Durham and the rest of County Durham. Start with a guide price online or call us to book a free survey for new or replacement doors.
Are prices higher in County Durham?
No. Guide prices are the same across mainland Britain: a 2.4 m aluminium sliding door is a guide £4,295–£5,295, fitted, including VAT, and your exact price is fixed in a written quote after survey.
What approvals do sliding doors need in England?
In England a replacement door is a controlled fitting, so compliance is arranged through a competent person scheme installer or Building Control; new openings need a Building Regulations application. We confirm the right route for your property at survey.