- Postcode district
- CO12
- County or region
- Essex
- Survey
- Free for new and replacement doors
- Daylight
- 7 h 45 min (December) to 16 h 43 min (June)
- Nearby
- Felixstowe (5 km north-east), Ipswich (16 km north-west), Woodbridge (17 km north)
Door types available in Harwich
Pick a door type for prices, fitting times and approvals in Harwich.
Light and sun in Harwich
At the latitude of Harwich, the midday sun climbs to about 61° in late June but only about 15° in late December, when daylight lasts around 7 h 45 min against 16 h 43 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.
What happens after you enquire
Every job in the CO12 district follows the same steps: price online, survey, written quote, made-to-measure manufacture and fitting, with the compliance certificate sent to you.
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.
Sliding doors in Harwich: questions
Do you cover villages around Harwich?
Yes. We cover Harwich and the surrounding CO12 district, as well as Felixstowe, Ipswich and Woodbridge. If you are unsure, enter your postcode in the guide price tool.
Can you widen my opening in Harwich?
Yes. We can form or widen an opening for a larger sliding door, with structural calculations, a steel beam and English approvals arranged. That work is quoted alongside the door.
Who fits the doors in Harwich?
Doors are fitted by installers we appoint and manage under our contract, so your contract and guarantees stay with us. The same surveyed specification goes from the quote to the factory to the fitters.