Sliding patio doors · England
Triple glazed sliding patio doors in Somerset
Triple glazed sliding patio doors across Somerset: free survey, written fixed quote, and fitting by installation teams working for us. Towns we cover include Bath, Weston-super-Mare and Wells.

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 Somerset
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 Somerset
- Bath
- Weston-super-Mare
- Taunton
- Yeovil
- Bridgwater
- Portishead
- Frome
- Burnham-on-Sea
- Clevedon
- Nailsea
- Minehead
- Wells
Rules in England
In England, replacement external doors must meet 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
The surveyor measures every opening, checks ventilation, escape windows and safety-glass zones, and talks through styles. Your written quote lists each item with its glass build-up and U-value, and the price is fixed for that specification.
- Every opening measured, including escape and vent needs
- Frames rated for the weight of triple glass
- Old windows removed and taken away
- Each opening closed up the same day
Questions
How much does a triple glazed sliding door cost?
Our guide starts at £1,895 fitted for a 1.8 m uPVC slider and £3,295 for a 3 m aluminium slider, inc VAT. UK quotes for triple uPVC sliders run from about £1,600 to £2,600.
Can I have a level threshold?
Low thresholds are available; they need a suitable drainage detail outside, which we check on survey.
Do sliding doors need safety glass?
Yes, all door glass must be safety glass. Triple units in sliders are toughened or laminated.
Do you cover all of Somerset?
We arrange surveys and fitting across Somerset.
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
- Bristol
- Wiltshire
- Gloucestershire
- Dorset
- Herefordshire
- Devon
- Hampshire
- Worcestershire
- Oxfordshire
- Isle of Wight
Other products in Somerset
- 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 Somerset
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.
