Aluminium- bi-fold doors
made in Kent.
We fabricate Smart Systems windows and doors in our own factory in Marden, then supply the trade across the South of England, or fit them ourselves for homeowners.
Supplying builders, installers and shopfitters from Kent to Devon


Buy direct from the people who cut it
Fabrication for installers, builders and shopfitters who would rather not order through a counter.
- Smart Systems profiles, cut and built in Marden
- One number to ring, and it reaches the factory floor
- Supplied across the South of England, Kent to Devon

Made in Kent, fitted by the people who made it
Windows, doors and roof glazing for your own home, from the factory that builds them.
- Bi-folds, sliding doors, windows and roof glazing
- Made and fitted by one company, not three
- Come and see yours being built before it is delivered
The extruder rolls the profile. A stockholder keeps it in a yard. A fabricator cuts and builds it. A trade counter takes your call. Each one adds time, adds a margin, and adds another number to ring when something is wrong.
Three of those four are the same building.
GXG cuts, machines and builds under one roof in Marden. One number, and one company answering for the job.
When a size is wrong, the saw belongs to somebody else.
The site stops
A wrong opening size is not fixed by an email. It is fixed by a machine, and the machine is three companies away from the person you are talking to.
The margin goes
Every hand in the chain takes a cut of a price you already quoted fixed. You absorb the difference, because the customer signed off weeks ago.
Nobody owns it
The counter points at the fabricator. The fabricator points at the extruder. You are the one standing on site explaining it to the customer.
Six things, cut and built in one building.
No catalogue of everything. These are the systems we hold, machine and assemble in Marden, for trade and for homeowners.
Aluminium windows
Alitherm 400 · Visotherm · Alitherm Heritage · VS600 vertical slidingFixed · side hung · top hung · tilt and turnSee the range 02Bi-fold doors
Visofold 1000 · Visofold 6000Folds in or out · side, end or centreSee the range 03Sliding doors
Visoglide PlusKitemarked to PAS 24:2022See the range 04Entrance doors
Designer · Signature · Designer door panelsResidential and communalSee the range 05Roof glazing
Roof lanterns · Aliver flat rooflightsGlazing unit replaceable without frame removalSee the range 06Shopfronts and commercial
Shopline · Smart Wall · MC 600 Plus · Communal entrance doorsSwing · rebated · automatic swing · automatic slidingSee the range
One building, from bar to finished frame.
The saw, the machining centre and the benches are all in the same unit in Marden. Nothing goes out to a third party and comes back late. If you want to see where your order is, you can stand next to it.
- Where
- Unit 7, Guardian Industrial Estate, Pattenden Lane, Marden, Kent
- Cutting
- Emmegi twin-head saw
- Machining
- CNC machining centre
- Assembly
- Built and glazed on the bench, in the same building
- Profiles
- Smart Systems
- Supplied to
- Twelve counties, Kent to Devon
- Visitors
- Welcome. Ring first and someone will walk you round
Twelve counties, out of one building in Kent.
Trade orders go out across the South of England. Everything on the lorry was cut and built in Marden that week, not bought in from somewhere else and passed on.
Outside these counties, ring anyway. If the job is worth the journey we will tell you straight, and if it is not we will say that too.
Check your area