Alitherm Heritage aluminium double doors with steel-look glazing bars, closed, in a RAL finish

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The look of old steel.
Alitherm Heritage

Alitherm Heritage is the system for period properties and conservation areas: a 59mm sightline that reads like old steel, with a thermal break and a multi-point lock behind it. We cut and build it in Marden like everything else.

1.5 W/m²KU value
Band BWindow Energy Rating
59mmSightline
47mmFrame depth

Why it exists

Most aluminium windows look wrong in an old building. The frames are too fat and the proportions fight the opening. Heritage answers that with a 59mm sightline and putty-line styling, so the glass line sits where a steel window's would, and the building keeps its face.

What you can have

Fixed lights, single or double sashes, side-hung and top-hung open-out casements, tilt and turn, pivot, and single or double doors including balcony doors. Steel-look bars and glazing bars are available, and matching heritage doors run off the same platform.

Conservation areas

Heritage is specified in conservation areas and on listed building refurbishments, but that is always subject to your local authority. We will tell you honestly whether we think it will get through, and we will not pretend a decision is ours to make.

Colour

Single or dual colour as standard, in the RAL and Naturals ranges, the bespoke Sensations colours, or the Alchemy range of eight anodised matches in gold, bronze, silver, grey and black. Traditional black, anthracite grey and white are the ones most heritage jobs land on.

Specification

The numbers, as published.

SYSTEM
Smart Systems Alitherm Heritage
SIGHTLINE
59mm side hung
FRAME DEPTH
47mm
U VALUE
1.5 W/m2K (using sealed unit 1.0 W/m2K)
WER
Rating B
GLAZING
24mm, 28mm, 32mm and 36mm
AIR PERMEABILITY
Class 4, 600Pa
WATER TIGHTNESS
Class 9A, 600Pa
WIND RESISTANCE
Class AE, 2400Pa
SIDE HUNG VENT
Max 700mm wide, min 300mm wide, max 1400mm high
TOP HUNG VENT
Max 1400mm wide, max 1300mm high, min 275mm high
MAX VENT WEIGHT
40kg
SECURITY
PAS 24:2016 Enhanced Security Performance
WEATHER
BS 6375 Part 1 2009
DOOR SIGHTLINE
59mm typical, max sash 900mm wide by 2100mm high
FINISH
Single or dual colour, marine quality polyester powder coat as standard
FIGURES
As published by Smart Systems

Download the brochure

The Emmegi twin-head saw in the GXG Aluminium factory at Unit 7, Marden, KentEmmegi twin-head saw, Unit 7
Inside the factory

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
Come and see it
Get a quote
© GXG Aluminium · Trade aluminium fabricator · Marden, Kent
GXG Aluminium is a trading name of Gilham and Gilham Glass Co. Ltd, company 05369985. Invoices come from Gilham and Gilham.