W20 Windows

Suitable for internal, commercial and heritage windows

The extremely versatile W20 range from West Leigh has been in production for decades and has a proven record of durability with excellent design potential. These windows are very popular with planners and architects. Whatever your construction needs, the West Leigh W20 range is ideal. 

  • Ideally suited for replacing Georgian windows
  • Slender profile and with an intermediate glazing bar at 28mm
  • All glazing beading can be internal or external
  • Glazing is up to 16mm and can comply with the Part L (England & Wales) building requirements
  • All W20 profiles, including any steel attachments, are hot-dip galvanised
  • Where specified, polyester powder coated to BS6497 in a wide range of standard RAL colours

A large range of quality modern or traditional face-mounted ironmongery can be fitted, in addition to restrictors, background trickle ventilators and security locks. All are available in a range of attractive finishes including the standard satin chrome plate or RTD RotoTone Dark Bronze lacquer. The main ironmongery, comprising handles and stays, is generally solid brass.

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The zinc reacts with the iron in the steel to form alloy layers, which are then covered with pure zinc as the window is withdrawn.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.

After chemical cleaning, our windows can be optionally coated to British Standards with our attractive and durable factory-applied polyester powder coating to enhance their aesthetics and minimise future maintenance. An extensive range of colours is available (any standard RAL reference).

All windows are hot-dip galvanised to British Standards to completely protect the window against corrosion.

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.