A finished ADP rear extension at dusk, wide glazing across the back of the house

Windows, doors and glazing · London

Made to
the opening.

Windows, doors and glass roofs for every kind of London home. Timber, aluminium, uPVC and steel, each one made to your opening. Surveyed, supplied and fitted by our own team.

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13yrs
In windows and doorsAngelo since 2013, ADP Windows Ltd since 2019
1team
One team from survey to fittingNo subcontractors
100yrs
Built to lastDesign life of a hand-welded steel frame
Hand-welded steel Crittall-style screen under a vaulted roof
01 · Slim frames
Slim sightlines

More glass.
Less frame.

Slim frames in steel and aluminium, made to the millimetre of your opening.

02Materials

The right frame for the opening.

Each material does a different job. At survey we tell you which one suits your home, then make it to your opening.

TimberFor period homes and conservation areas, where the original look matters. Sash and casement windows, French doors.Explore timber
AluminiumSlim frames and large panes for extensions and garden openings. Sliding, bifold and front doors, casement windows.Explore aluminium
uPVCLow upkeep and warm rooms, for everyday windows and patio doors.Explore uPVC
SteelHand-welded Crittall-style doors with the slimmest frame, inside the house and out.Explore steel doors
03Steel doors, drawn then welded

Welded, not assembled.

Hot-rolled steel, welded by hand and ground back until the frame reads as one line. Around three times stiffer than aluminium, with a 10-year written guarantee.

  1. 01Outer frame, set to the surveyed openingDONE
  2. 02Door leaves and sidelightsDONE
  3. 03Glazing bars, placed by handDONE
  4. 04Welded joints, ground backDONE
  5. 05Handles and hingesDONE
  6. 06Glazing inDONE
DRAWING0%
Explore Crittall-style doors
04The range

Choose your opening.

Steel, aluminium, timber and uPVC. Eight families, one standard of fit.

01Steel doors

Crittall-style steel doors

Hand-welded · internal and external · fire-rated

Explore steel doors
02Slim sliding

Slim sliding aluminium

Cortizo COR Vision · 20mm interlock

Explore slim sliding
03Aluminium doors

Aluminium doors

Bifold · sliding · French · front

Explore aluminium doors
04Aluminium windows

Aluminium windows

Casement · tilt and turn · Heritage style

Explore aluminium windows
05Timber windows

Timber windows

Casement · sash · tilt and turn

Explore timber windows
06Timber doors

Timber doors

French doors

Explore timber doors
07uPVC

uPVC windows and doors

Casement · flush · sash · patio sliding

Explore uPVC
08VELFAC

VELFAC

Composite windows and doors

Explore VELFAC
05What we are known for

Three lines, built properly.

SteelInternal and external

Crittall-style steel doors

Hot-rolled steel, hand-welded and ground back to one frame. Internal and external, made to your opening.

  • SightlineFrom 20mm
  • PriceFrom £1,999 +VAT, supplied and fitted
  • SecurityPAS24 tested options available
  • Guarantee10-year written
Explore steel doors
AluminiumMost chosen

Slim sliding aluminium

A garden wall of glass with a quiet frame. Large panes, a flush threshold you walk straight over.

  • SystemCortizo COR Vision
  • Interlock20mm
  • ThermalUw from 1.3 W/m²K
  • PanelUp to ~2500 × 3000mm
Explore slim sliding
Doors and windowsWhole house

Everything else, fitted the same way

Front doors, bifolds and French doors. Casement, sash and tilt-and-turn windows. Different materials, one team, one standard of fit.

  • MaterialsAluminium, timber, uPVC, VELFAC composite
  • DoorsBifold · sliding · French · front
  • WindowsCasement · sash · tilt and turn · Heritage style
See the full range
06Portfolio

Finished,
not staged.

Every one of these was surveyed, supplied and fitted by our own team.

See our portfolio
Charcoal House, Bromley: dark rendered rear extension with full-width glazing
FEATURED
Case study · Bromley BR7Charcoal House
Charcoal HouseBromley, BR7
Panoramic House, Esher: glazed garden room
Case study · Esher, SurreyPanoramic House
Panoramic HouseEsher, Surrey
The Barn Bathroom, Richmond: steel sliding door in a dark interior
Case study · Richmond, LondonThe Barn Bathroom
The Barn BathroomRichmond, London
The Sash Kitchen, Hampstead: white kitchen with sash windows
Case study · Hampstead, NW3The Sash Kitchen
The Sash KitchenHampstead, NW3
The Garden Kitchen, Edgware: kitchen extension opening to the garden
Case study · Edgware, LondonThe Garden Kitchen
The Garden KitchenEdgware, London
The Sun Terrace, Harrow: bifold doors onto a terrace
Case study · Harrow, LondonThe Sun Terrace
The Sun TerraceHarrow, London
More being written up

Six projects in full.
More to follow.

See our portfolio
07Supply and fit

One team from the opening to the finished room.

Most jobs go wrong in the gap between the supplier and the fitter. We hold both, so there is one number to call if anything needs putting right.

Slim sliding doors over a walk-on glass floor
01 · SURVEY

We survey and set out

We measure the opening before anything is ordered, and set the frame to the glazing, not the other way round.

Building Control compliant
Steel Crittall-style doors under a gable
02 · RENDER

You see it first

A render of the finished result before you commit, so you decide on your room, not on a brochure page.

Before you commit
Steel internal door in a dark hallway
03 · ORDER

Made to order for your opening

Every window and door is built to the size we measured, in timber, aluminium, uPVC, composite or steel.

No catalogue sizes
Kitchen extension opening fully to the garden
04 · FIT

We fit it ourselves

Our own fitters install it, so nothing gets lost between a supplier and a separate crew.

One team, start to finish

Building for a client? One supply and fit team for your timeline.

Trade and builder enquiries
08Start here

Start with a conversation.

  • A render of the finished result before you commit
  • Showroom in Ruislip, opposite Ruislip Manor station, with parking
  • One team from survey through to installation
Prefer to talk?+44 20 3375 8609Not ready for prices? Send us a message instead