Rust finish, duplex coatings façade Gerrards Cross

Expertise in specialist pre-treatments and primers


Aston House is a collection of thirty-two apartments in Gerrards Cross, Buckinghamshire.

The one and two bedroomed interiors are complemented by a mix of classic protruding balconies and Juliet balconies, as well as terraces for the top floor homes. The external envelope has a brick-work skin up to the 4th floor and the fifth-floor penthouse apartments have metal rain screen cladding panels. There is also rain screen cladding around the ground floor entrance lobbies.

Primer for pre-galvanised steel

Powdertech Corby was asked to coat the rainscreen cladding which is constructed from large sheets of pre-galvanised mild steel. When the sheets are cut to form panels, bare steel edges are exposed and these need protecting. After pre-treatment in specialist pre-treatment for galvanized steel Powdertech used a zinc-rich primer coat to protect the base material in these areas. This combination of the correct pre-treatment for the galvanized steel and protective coating for the exposed steel is a speciality of Powdertech and one of their Plus+ processes.

Popular earthy, natural shades

For the topcoat the architects wanted a warm, natural shade to complement the pale sand coloured brick work. ‘Rusted steel’ from our Landscape/Terrain range was chosen to coat 850sq metres of mild steel forming the rain screen cladding. All the powders we use conform to  fire reaction rating A2-s1,d0 and have a 25-year guarantee for gloss, colour and adhesion.


  • Powdertech has years of experience in applying additional coating where needed to protect vulnerable metal surfaces. We call this our Plus+ service.
  • Powdertech’s flexible plant can coat a wide variety of shapes and sizes of architectural metal work and fabrications.
  • Powdertech has over 30-years’ experience in professional architectural powder coating.
  • Powdertech has a very wide range of both standard and unusual powder coating shades and textures.
  • Powdertech's rigorous non-chrome pre-treatment system offers the best preparation for architectural aluminium.



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