Rationel Domus / Aldus Windows and Doors

Rationel DOMUS & ALDUS

DOMUS/ALDUS double-glazed windows and doors help create a bright, pleasant and energy efficient living environment. With its solid timber construction, the DOMUS range offers the timeless appeal of natural wood on both the inside and outside, making it ideal for traditional refurbishments as well as contemporary new build homes. ALDUS aluminium/ timber composite windows and doors are sleek, elegant and modern. Their exterior aluminium cladding is durable and low maintenance, offering extra protection against the weather.

With their ultra-thin profiles ALDUS Slimline windows are the most practical choice when replacing old PVC-u windows.

Both DOMUS and ALDUS ranges offer a wealth of styles, colours, and glazing options so that you can make the best choice for your home.

Product detail

With DOMUS/ALDUS no detail is overlooked.  Our high quality, modern hardware and fittings will ensure that your new double- glazed windows operate with efficiency and style.

Can be supplied with trickle vents

Interior sculptured window frame

Adjustable hinges – keeps the windows tight

Opening functions

PATUS and PATUS energy efficient windows are available in many different styles and designs. All types are divided by bars and come in several variants. Terrace and front doors with glass and aluminium panels are also included in this range. They are easy to join and therefore suitable for complex window solutions. You can read more about specific opening functions by clicking on them below.


Fixed light

Top Guided Window

Side Hung Window

Top Swing Window

Side Guided Window

Tilt and Turn


Entrance Door

Stable Door

Panelled Door

Patio Door

Sliding Patio Door

Tilt and Turn Door


Rationel offers a number of standard RAL-colours for PATUS and PATUS windows and doors. Be aware that the weather strips are grey regardless of the window or door colour.

PATUS can be delivered with one colour on the inner side and another on the outer side. There is no extra cost for this option if you choose standard colours on both sides.

PATUS can be delivered with one colour on the inner side and another on the outer side, for an additional 20-25% on the standard selling price.

RAL 9010

Creme white
RAL 9001

Light grey
RAL 7035

Slate grey
RAL 7015

RAL 7016

RAL 9005

Silver grey
RAL 7001

Dark brown
RAL 8017

Olive green
RAL 6003

Navy blue *
RAL 5013

RAL 3011

Mid grey
RAL 7042

Pebble grey
RAL 7032

RAL 1001

Beige grey *
RAL 7006

Yellow *
RAL 1018

Dark green
RAL 6007

Blue black
RAL 5008

Clear lacquer
(Internal only)

Granite colours (only for ALDUS )

SAA10F Sablé

2150 Sablé

2400 Sablé

2900 Sablé

2100 Sablé

900 Sablé


For an additional cost you can choose from a wide range of non-standard RAL-colours for your new DOMUS or ALDUS windows and doors.

Note: we cannot guarantee a precise colour match with the above examples, so it is important that you use genuine RAL colour cards when making your selection

Energy efficient double glazing

DOMUS and ALDUS double-glazed windows come with low energy glass as standard, which will decrease your carbon footprint and help reduce your heating bills in the winter.

They meet Energy Efficiency Rating (WER) band A, which exceeds current Building Regulations.

All our double-glazed units are constructed with argon gas insulation between the panes, which gives outstanding thermal performance, and a warm edge spacer or ‘thermal break’ which reduces heat loss round the perimeter of the window.

In addition, an invisible metal coating on the inner pane allows the sun’s rays to enter, whilst reflecting the interior heat back into the room enabling you to take advantage of ‘free heat’.

DOMUS windows come with standard 26mm glazing and ALDUS offers 32mm double-glazing for even better energy performance.

Why not try our Energy Simulator to see how much you can save on your heating bill by replacing your windows and doors.

Additional glazing options

With our specialised glazing options we can help you tailor your window and door choice to meet your exact requirements:

Added Safety. Our impact resistant safety glass will reduce the risk of you injuring yourself if you accidentally break a window.

Enhanced Security. Our high strength double glazed units can be reinforced with toughened or laminated glass for extra protection against burglaries and break-ins.

Sound Reduction. You can enjoy the peace and quiet of your own home with our acoustically insulated windows.

Increased privacy. You can protect your privacy with obscure glass in bathrooms and kitchens.

Solar glass. To prevent south facing rooms from overheating in the summer our months try our range of Solar Glass.

Discover our full range of customised glazing options here; ENERGY GLASS PANES

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