There are now several systems companies offering an aluminium steel replacement window and other products that are designed to replicate original steel windows.
How to create the wrong steel replacement window.
Many people have made the mistake of spoiling the aesthetics of older buildings fitted with original steel windows by replacing them with PVCu. Often these plastic windows will be fitted with internal Georgian bars in an effort to replicate the square small pane effect of the original.
Even where aluminium windows with applied internal bars are used, similar to those found in many plastic windows, they may not accurately replicate the aesthetics of the original.
In some properties this may not matter, however in heritage and traditional looking buildings, it is important if you want to keep the original aesthetics.
Smart Systems Alitherm Heritage 47 steel replacement window.
The Smart Systems Alitherm Heritage 47 system is excellent as a steel look door and window and is one of the most authentic looking products on the market presently. A very well designed aluminium window, it offers slim and thermally efficient window frames that really do replicate the visuals of original windows quite well.
There are slim frame and sash sections as well as design features built into the system to mimic the look of the originals. Aesthetics are very much like for like on the Alitherm Heritage 47 System.
There are several applications where this new aluminium crittall replacement window can be used.
Old cottages, warehouses being converted into apartments, conservation areas and art deco homes are excellent examples where this kind of window could be used to provide a modern window replacement with all the original features. Cleverly there are also pivot windows available as well as side hung casements.
The replacement of old steel doors was often an issue as there was little available in aluminium to replicate the sight lines. Some companies have taken window profiles and modified them to create doors. Smart Systems also have actual door profiles available to complement this system. The door suite available is aesthetically very good indeed and provides an aluminium solution for balcony doors, rear french doors and side doors. Read more about Crittall door replacements in aluminium.
The new steel window replacement system from Smarts is also available in their large colour range including the very attractive Sensations range of textured powder coated aluminium. It is also available in the brand new Alchemy range of anodised effect powder coated colours.
Windows feature excellent security through multi point locking, impressive 1.2 or 1.5 Wm2K U values, 24-32mm double glazed unit options and A rating.
They are further complemented with a range of traditional hardware such as monkey tail handles, bulb type handles and traditional looking peg stays typical on original steel windows.
Installers of these windows should check the suitability of “standard” double glazed units.
These really are attractive and authentic looking windows. However it is the experience of this website in working with these slim steel replacement windows that often the standard spacer bar height of typical double glazed units may stand proud of the bead/aluminium line.
It should be made clear that many customers may not notice this. However there have been a number of cases where customers have complained that they can see the silver, black or white spacer bars proud of the aluminium line.
Glass manufacturers are not to blame as their units fall within manufacturing tolerances and industry standards. It is worth checking with your manufacturer or supplier. We recommend sourcing double glazed units from manufacturers that specialise in slim bar double glazed units such as Trefforest Glass and others where this potential problem can be avoided.
Crittall® is a registered trademark of Crittall Windows Limited which is unconnected to the Aluminium Trade Supply Website.
Main image shows Smart Systems Alitherm Heritage 47 windows, manufactured by Everglade Windows in Perivale Middlesex.