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sliding doors — bespoke installation by South East Windows & Doors across London and the Home Counties
Doors

Aluminium Sliding Patio Doors — London & the Home Counties

Where bifolds fold, sliders disappear. For an uninterrupted view of the garden all year round — and glass panes up to 3m tall on a single leaf — nothing beats a slim-frame aluminium slider.

Signature detail

The 20mm interlock

Where two sliding panels meet, conventional systems show a 60–70mm frame stripe blocking the view. Ours meet at a 20mm interlock — a hair-thin vertical line at eye level that all-but-vanishes when you're looking through it.

Overview

A closer look at what makes the sliding doors range distinctive — the specification, the styles, the process, and the answers to the questions we get asked most.

Specification

Thermally-broken aluminium profile · precision stainless roller carriages · Q-lon weather seals · A-rated argon glazing · PAS 24 multi-point hook locking

01

20mm Interlocks

The slimmest sightlines available on the UK market — maximum glass, minimum frame, minimum visual interruption.

02

Huge Panes

Individual panels up to 3m tall and 2m wide. Perfect for garden-facing rear elevations and view-driven coastal or lakeside homes.

03

Glide-and-Lock Mechanism

Precision-engineered stainless rollers plus multi-point hook locking. Silent to open, immovable when closed.

04

Lift-and-Slide Option

Premium gear where a single handle rotation lifts a 400 kg panel a millimetre off its track — allowing effortless slide on the largest configurations.

05

Flush Threshold Available

Weathered sill as standard or a fully flush level threshold for barrier-free access to the garden.

Specification

Engineered to the millimetre.

Every frame we install is made to your survey sizes with the following performance envelope as standard.

U-value (whole door)
1.2 – 1.4 W/m²K
Interlock sightline
20mm — industry-leading slim
Max leaf size
3m tall × 2m wide · up to 400 kg per leaf
Configuration
2, 3 or 4 track · pocket-slide option
Gear
Standard rolling · lift-and-slide premium option
Security
PAS 24:2016 · Secured by Design
Sliding Doors — where we install

Sliding Doors across London
and the Home Counties.

We install sliding doors across six counties — every project surveyed, made and fitted by our in-house team. Choose your county to read local knowledge, planning notes and recent work.

See all areas covered
Recent work

Sliding Doors — installed.

A selection of recent installations across London and the Home Counties, photographed on site.

Large three-panel slim-frame black aluminium sliding patio doors on a modern British home overlooking an infinity pool at dusk
Slim-frame slider · poolside terrace01
Corner-configuration slim-frame black aluminium sliding doors on a contemporary British garden extension with floor-to-ceiling glass wrapping the corner
Corner sliding doors · garden extension02
Interior view through a slim-frame black aluminium sliding door onto a landscaped British garden at sunset from a designer open-plan kitchen
Interior · kitchen threshold at sunset03
Common questions

Practical answers.

Everything homeowners ask us about sliding doors — survey, lead times, guarantees and coverage.

Sliders or bifolds?+

Sliders keep the view open all year round and provide strong thermal performance in winter. Bifolds fully open the wall in summer. Many clients specify sliders on shaded elevations and bifolds where they entertain — we'll walk through the trade-offs at survey.

How large can a single sliding panel be?+

Up to 3m tall and 2m wide on our premium lift-and-slide system — around 400 kg of glass moved on a single handle. Bigger than that and we specify a fixed picture window alongside.

Are they warm?+

Yes — 1.2 W/m²K on a thermally-broken frame with argon-filled A-rated glass. Modern sliders are as thermally efficient as a solid wall of the same era.

What's a pocket slider?+

A configuration where the sliding leaves disappear entirely into a wall cavity, leaving an unobstructed opening. Requires a plasterboard-lined wall pocket at build stage — we survey and detail this at design.

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Sliding Doors.

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