- Postcode district
- HA1
- County or region
- Greater London
- Survey
- Free for new and replacement doors
- Daylight
- 7 h 49 min (December) to 16 h 39 min (June)
- Nearby
- Pinner (3 km north-west), Wembley (5 km south-east), Ruislip (6 km west)
Sliding doors we fit in Harrow
Each link opens local guide prices and details for Harrow.
How much sun will a door in Harrow get?
At the latitude of Harrow, the midday sun climbs to about 62° in late June but only about 15° in late December, when daylight lasts around 7 h 49 min against 16 h 39 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.
From guide price to fitted door in Harrow
Every job in the HA1 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 Harrow: questions
Do you cover villages around Harrow?
Yes. We cover Harrow and the surrounding HA1 district, as well as Pinner, Wembley and Ruislip. If you are unsure, enter your postcode in the guide price tool.
Who fits the doors in Harrow?
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.
Which sliding door suits a home in Harrow?
It depends on the opening and budget. uPVC is the lowest-cost option for openings up to about 3.6 m; aluminium gives slimmer frames and wider spans; slimline and lift and slide suit large, high-end openings. The survey in Harrow is the place to settle it.

