Both options work to bring a softer line to your windows, helping your project to blend more seamlessly into its surroundings. Available with or without glazing bars which particularly suits this style of windows.

So whether you’re updating a classic house or you’re looking to give a new build a more traditional edge, FORMA and FORMAPLUS can bring your vision to reality.


This timber window range comes with angled glazing bead and ovolo moulded profile make it an ideal choice for country-style and traditional designs. With an extensive range of colour choices available, you’re sure to find one you’ll love.

Key features:

  • Timber frame
  • 60-year life expectancy*
  • Over 200 colours available
  • Best performance

Triple glazed:

  • 0.78 W/m2 K U-value
  • 42 dB Rw sound reduction

Double glazed:

  • 1.27 W/m2 K U-value
  • 40 dB Rw sound reduction


Made from timber, with external aluminium cladding, Rationel FORMAPLUS offers all the benefits of natural wood on the inside and easy maintenance on the outside.

Key features:

  • Aluminium-clad timber frame
  • Low-maintenance
  • 83-year life expectancy*
  • Over 200 colours available, with no extra charge for dual colour
  • Best performance

Triple glazed:

  • 0.80 W/m2 K U-value
  • 43 dB Rw sound reduction

Double glazed:

  • 1.28 W/m2 K U-value
  • 40 dB Rw sound reduction

Prefer the modern look?

If you’re looking for a more contemporary window and door style, why not discover our  AURA or AURAPLUS range?

Let’s build your dream home together

Get in touch to take the first step on the journey to a home you’ll love.