During its 60 years of existence, Rationel has achieved a reputation as one of the most attractive suppliers of windows in Denmark, based on the high quality of its windows and its customer service.  

Established  1954 – joined the DOVISTA Group in 1999
Products    Windows made of wood and wood/aluminium
Field of Excellence: durability, energy efficiency and security 
Geographic presence

Headquarters and primary market in Denmark
Also present on the UK and Irish markets
Exports account for approx. 30%

Market Newbuild and refurbishment 
Distribution channels

In Denmark: sells through 400 builders merchants and DIY centres 

In the UK and Ireland: to distributors and building contractors 

Good old-fashioned craftsmanship has been the secret behind Rationel’s success ever since it started producing windows and doors in Sdr. Felding in 1954. And craftsmanship is still the foundation of the healthy international business it is today, selling its doors and windows in the UK and Ireland besides on the Danish market.

Rationel manufactures energy-saving and even energy-contributing windows and doors, which at the same time offer maximum comfort and security. Rationel is very committed to product development, and its doors and windows are constantly improved, both to meet statutory and other requirements and their customers’ wish for modern design and functionality. 

In Denmark, the nearest Rationel showroom is never more than 25 km away.