HERRERO Steel Doors & Windows is the best custom solution to bring your unique and modern style to light.

Steel Doors & Windows

Explore the options we have for you


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U-values as low as .29 One of the best energy performances in the steel windows industry, with values rivaling high-performance wood windows.- Factory glazing means products will ship with NFRS label attached to glass.


Our Thermally broken line design greatly reduces the chance of condensation seen with most steel and aluminum window construction.- Product has gone through condensation resistance “CR” testing with the results - similar to high-performance wood windows.

  • Galvanizing process ensures that the window will be free from rust and helps to increase the window's lifespan.

  • Polyester powder coating means that a steel window will not need to be painted for at least twenty years. We have our exclusive finish colors selection. A wide range of colors are also available and can be specified using the RAL color chart system.

  • Opening windows can be hinged on the side or the top and come complete with ironmongery that can be sympathetic to the original or with a more modern look. They have a double weather seal and so exceed PAS23 requirements.

  • Glazing decoration can be specified so that the window retains an existing leaded, Georgian or Modern glazing appearance. The glass units are made up of soft coat glass which helps retain the heat in a home, low ion glass which draws the suns rays through the glass in the winter months, Krypton gas helps increase thermal insulation as well as the added benefit of increased sound insulation and a warm edge spacer also helps increase thermal insulation.

  • Doors are manufactured from either W20 or W40 steel profiles and complement the steel window in profile and style. Single and double (French) doors are available and can be manufactured to very large dimensions.

  • Doors are available with traditional mid rails and kicking panels or with large full height glass panes. Locking mechanisms can be traditional mortise locks with lever/lever handles and shoot bolts or concealed multi locking with an internal handle.

It's never been so easy to choose

  • High performance glass options.
  • Multiple glazing frame (bead) and muntin bar options.
  • Unlimited door and window configuration.
  • Screen options: fixed, sliding, or retractable.
  • “Large format” oversize doors and windows.
  • Mulling options that can create walls of glass.


Thermal Steel construction and manufacturing capabilities allow for a level of Design Flexibility not seen in the steel window and door industry.

Choose HERRERO and you will enjoy technologically advanced, low maintenance Steel Windows and Doors which will meet the latest performance requirements for insulation, weatherproofing and security and which will last for many years.
All of our doors are sensitively crafted to the highest standards in our own ISO 9001 approved factory.
The process of manufacturing a steel door – from rolling into shape and welding to hot dip galvanizing and powder coat painting – is a complex one which takes time and attention to ensure the end product is the standard people have come to expect from us.

Our Mission

Our mission is to design and manufacture the highest quality steel doors and windows available anywhere in the world today. To accomplish this, we will use only the most innovative design features in combination with the finest hardware and materials in the most modern manufacturing facilities.

Our Team

Our team of experienced professionals has been assembled to achieve excellence in the design, manufacturing, and delivery of every product that we produce. Every member of our team is wholly dedicated to providing our customers with a superior product and experience that will be cherished for many years to come.

Our Goal

Our primary goal is to meet and exceed the expectations of the most discerning customers, by providing superior custom designed products that are backed by exceptional service and support.

Ready to speak with us about your new steel door or window?

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