Sliding patio doors · England
Triple glazed sliding patio doors in Berkshire
We survey and fit triple glazed sliding patio doors across Berkshire, from Reading and Slough to smaller towns such as Sandhurst.

Large sliding panels in triple glass on rollers rated for the weight. A sliding patio door has large glazed panels that slide past each other on a track, so it opens without swinging into the room.
Guide prices across Berkshire
uPVC 2-pane slider
about 1.8 m wide
£1,895 – £2,295inc VAT · £1,580 – £1,910 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
uPVC 2-pane slider, wide
about 2.4 m wide
£2,295 – £2,895inc VAT · £1,910 – £2,410 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
Aluminium slider
about 3 m wide
£3,295 – £4,195inc VAT · £2,745 – £3,495 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
Guide prices, supply and fit. The written quote after your survey fixes the price for the specification shown; anything extra is agreed with you first.
Towns in Berkshire
Rules in England
England sets replacement door limits through Approved Document L (2021 edition, with 2023 amendments): 1.4 W/m²K, or a door set energy rating of band C (more than 60% glazed) or band B (other doors). Replacement external doors fall under the same energy rules: a competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council, or a building control body approves it.
Before ordering: Replacing doors on a house is normally permitted development if the new ones look similar. Flats need planning permission for a change that alters their appearance, an Article 4 direction may mean permission is needed, and listed buildings need listed building consent.
How it works
After the free survey you get a written quote naming the frame system, the glass build-up and the whole-window U-value for every item. Windows are made to order, then fitted, sealed and made good, one opening at a time.
- Free survey and a written quote fixed for the specification
- Glass build-up and door U-value on every quote
- Written handover pack at the end of the job
- Guarantees on frames, units and fitting in writing
Questions
Are triple glazed sliding doors hard to open?
Not with correctly rated rollers. Lift-and-slide gear makes even very large panels easy to move.
Do sliding doors need safety glass?
Yes, all door glass must be safety glass. Triple units in sliders are toughened or laminated.
Can I have a level threshold?
Low thresholds are available; they need a suitable drainage detail outside, which we check on survey.
Do you cover all of Berkshire?
We arrange surveys and fitting across Berkshire.
Do I need permission for triple glazed sliding patio doors in England?
In England, a replacement door on a house that looks similar is normally permitted development; flats need permission if the change alters their appearance, Article 4 areas may need permission, and listed buildings need listed building consent.
Sliding patio doors in nearby areas of England
- Surrey
- Buckinghamshire
- Oxfordshire
- Hampshire
- Greater London
- Hertfordshire
- West Sussex
- Bedfordshire
- Wiltshire
- Isle of Wight
Other products in Berkshire
- uPVC windows
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- Composite front doors
- French doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
Sliding patio doors across Berkshire
Written quote fixed for the specification, after a free survey. Building Regulations sign-off by a competent person scheme installer or building control, as the law requires in England.
