W30 – the slimmest steel windows complying to all current Part L building regulations


Designed for energy efficiency, W30 steel windows from Steel Window Association members are the slimmest steel window range currently on the market complying to all current Part L building regulations.

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For Domestic applications the W30 system is C rated by the BFRC and if required a B rated window can now be offered. Each C rated window incorporates an 18mm double glazed unit, comprising 4mm soft coat low e glass and 4mm clear float sandwiching a 10mm krypton gas filled cavity with a warm edge spacer bar.

In addition to the outstanding overall thermal performance of the window, the W30 is double weather stripped to improve weather tightness and thermal efficiency while a chamfered aluminium beading system secures the double glazed units. To prevent any rusting, the steel elements are galvanised and the windows are powder coated to stop further decoration being required.

Providing a variety of aesthetic and security solutions, W30 steel windows are supplied in a large range of RAL colours and a comprehensive range of handles and stays is available in a number of finishes with or without key locking function. Multi-locking functions can be added if required.

Clear, leaded and heritage glazing units are offered and the W30 provides a special back to back system to replicate original small pane designs. Both 9mm and 12mm applied leading is available to simulate traditional leaded lights in a double glazed window.

From a lifecycle perspective, all the steel elements of the W30 are ultimately completely recyclable. The credentials of steel windows are recognized by the Building Research Establishment’s ‘Green Guide’, which gives them an above average B rating.

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For further information on the Steel Window Association, please visit www.steel-window-association.co.uk or call 0844 249 1355.

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