W30 Windows are designed for energy efficiency, and West Leigh's are the slimmest steel options currently on the market.
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. For rust prevention, the steel is galvanised and the windows powder-coated, minimising any redecoration requirement.
All the steel elements of the W30 are recyclable, and the credentials of steel windows are recognised by the ‘Green Guide’, which gives them an above-average B rating.
A large range of high quality modern or traditional face-mounted ironmongery can be fitted in addition to restrictors, background trickle ventilators and security locks. All items are available with a range of attractive finishes in addition to standard finishes of satin chrome plate or RTD RotoTone Dark bronze lacquer. Main ironmongery (handles and stays) is generally solid brass. Opening windows are available with standard welded or variable geometry concealed hinges.
A key part of BS 6510, adhered to by West Leigh, is positive protection from rust. Frames of hot-rolled solid steel are hot-dip galvanized after fabrication to BS EN ISO 1461. During this process, the windows are thoroughly cleaned and then dipped in a bath of molten zinc. The zinc reacts with the iron in the steel to form alloy layers, which are then covered with pure zinc as the window is withdrawn. This combination of soft zinc over hard alloy layers produces a highly durable protective coating that will not flake or peel. In the event of accidental damage, the galvanized coating will corrode instead of the steel to further prevent rusting.
Galvanized steel windows do not require painting for protection, but their appearance is enhanced by the addition of a factory-applied polyester colour coating. Polyester coatings have a life expectancy of at least 15 years and a comprehensive range of colours is readily available, with the matte finish proving most popular because of its surface enhancing properties.
The durability and high performance of steel windows can be enhanced even further if good maintenance practices are observed.
Frames should be cleaned at regular intervals using a mild, non-alkaline detergent in warm water, applied with a soft cloth or sponge.
Glazing and perimeter sealants should be inspected on an annual basis and appropriate maintenance action should be taken.
Galvanized steel windows which are not factory finished with a polyester colour coating are manufactured with clearances to allow for up to three or four coats of paint on the meeting surfaces. When the repainting programmed has exceeded this, the paint should be stripped off all meeting surfaces prior to repainting.
All hinges, pivots, handles, stays and other mechanical parts should be checked for operation, kept free of excessive paint build-up and lightly lubricated.
Full Operation and Maintenance Manuals are supplied by West Leigh upon request on any new window project.