Traditional Oak Post and Beam Building in South Oxfordshire

When setting out to create her perfect home, the customer explained to us the level of research that went into choosing every detail. Low maintenance, traditional look and feel, but near passivhaus performance were all stated must-haves for the fenestration.

After hearing that many suppliers had been contacted, we are very proud to have been selected as the window supplier and installer of choice. Our reputation for high performance German style installation was a key criteria for selection.

Although aluminium-cladded timber is a relatively modern idea, the Rationel FormaPlus offers this low-maintenance solution with the unique styling of a classic timber window. The bevelled external aluminium of the external frame provided an external appearance, which is unusual in the composite window market. Coupled with the internal ovolo moulding on the frame, the FormaPlus was deemed the perfect choice.

The technology that makes the Lacuna bifold door a low-maintenance product is similarly modern, yet it is still in-keeping with the traditional aesthetic.

Inside, the home feels bright and airy. This is mainly down to the choice to have a very practical design: opening sections only where necessary and astragal bars were purposefully omitted to maximise light.

Externally a light grey (RAL 7035) was chosen to match external oak once silvered and aged.

To create a cohesive design, the light grey exterior of the windows continues in the surrounding areas. External cills and 90 degree corner posts are both colour-coded to match the exact RAL colour and gloss level as the window frame. This is especially noticeable on the orangery at the rear of the property: where doors, windows, 90 degree posts and 180 degree posts all come together as one single continuous section.

The traditional side-hung hinges on the windows are complimented by a modern locking mechanism and the convenient handle-operated friction brake. Multi-point locks help to ensure that the windows are well above the standard UK security requirements, and the friction brakes on all openers allow the windows to be held open in any position.

The installation uses our highest performance i3 installation system to ensure long term air and water tightness that match the manufacturer stated life expectancy of 83 years. The windows were supplied with a 10 year manufacturer guarante

Rationel FormaPlus | Lacuna

Click the images below to enlarge

Oxfordshire Home with Lacuna Door
Rationel Bay Window with French Doors
Orangery with Rationel FormaPlus
Rationel FormaPlus with 3 sections

Rationel Outward Opening French Doors
Rationel Triple Glazed Fixed Light
Cornerpost Cill
Exterior 90 degree Cill

Enlightened Windows Colour Coded Cill
FormaPlus with Friction Brake
FormaPlus Top Guided Window
FormaPlus Bathroom Window

Composite Window Frame
Lacuna Bifolding Door Stainless Steel Hinge
Lacuna Door handle with thumbturn
Bifold door with small panels

Lacuna Bifold Door
Bifold Door leading to patio area
RAL 7035 Composite Windows
Rationel FormaPlus Side Hung Window

Rationel FormaPlus Bay Window Interior
Rationel FormaPlus Corner Window
Rationel 90 degree corner
Light Grey Aluminium Timber Windows

FormaPlus Window with 3 Sections Open
FormaPlus side hung opener
Aluminium Clad Side Hung Windows
3 Section Composite window

Rationel Night Vent Position
Rationel FormaPlus Triple Glazing