UPVC Windows

Exteriorplas are proud to be associated with the Rehau brand, and fabricating windows and doors. Rehau have long been regarded as one of the industry’s leaders in UPVC extrusion, and was one of the first system houses in the UK.  With a wide range of styles and sizes, from casement windows, tilt and turn, doors and conservatories, and in a vast choice of finishes, we believe that we offer our customers the best energy efficient product available in the UPVC market. We are honoured that our work and services have been highly regarded to be affiliated with their ‘approved retailer’ scheme.


Long considered to be the first choice for many designers and specifiers, aluminum windows and doors are renowned for being inherently strong and durable.  With a superior thermal performance and an aesthetically pleasing appearance, it means that aluminum is an incredibly high standard replacement to steel windows. Offering a wide range of configurations and styles that will meet any project specification, single or dual colour, our aluminum windows, doors and curtain walling, is sure to suit your requirements.


High quality engineered timber windows and doors have always added value to a property and for the discerning buyer are seen as an investment in their property and in asses ‘kerb appeal’. More and more homeowners, property developers and local authorities are rediscovering the benefits, and value, of engineered timber windows. Not only do timber windows and doors add value, character and charm to a property, according independent test data from the Herriot Watt Institute at Edinburgh University, they last longer, are better value and are more environmentally friendly than plastic windows. Fully factory finished timber windows from ExPlas carry a 30-year warranty against rot, 10 years on manufacturing and materials defects and 8 years on the factory applied surface finish. Our windows are manufactured to a strict Wood Window Alliance standard. Our timber windows are manufactured from engineered redwood timbers, sourced from FSC and PEFC accredited European Forests and mills with full tractability, and hand selected FSC/PEFC hardwoods. All of our timbers comply with EUTR and CITIES. Engineered timbers remove knots, shakes, splits, most resin pockets and by using laminars prevents twisting and warping of the timbers.


Capturing the look of a traditional timber sliding sash window, combined with modern technology, our range of UPVC sliding sash windows can will suit your project from the full replacement of timber sashes, to the replicating of traditional feature windows in even the most sensitive conservation areas.

Secondary Glazing

Secondary glazing is suitable for most buildings, be it old or new A lightweight discreet aluminium system that is fitted the internal window reveals or face fixed If offers a subtle look whilst offering numerous benefits:
  • Improved energy performance
  • Toughened safety glass as standard
  • Approved by the Heritage society for period properties and conservation areas
  • Versatile enough to maintain the charm of a property
  • Acoustic improvement in reducing noise pollution
  • Vertical slider secondary can incorporate tilt to clean facility, pre-tensioned balances and quick release sashes without the need for tools
  • Available in WHITE, BROWN and a range of RAL colours
  • Available with fly screen inserts