The BERTRAND company offers professional warranty and post-warranty service for windows and doors.

We offer you: 

  • Installation and replacement of windows and doors
  • Adjustments, repairs and replacement of fittings 
  • Renovations of windows and doors 
  • Installation of external and internal window sills 
  • Repair of damaged paint coatings
  • All kinds of other warranty and post-warranty services

Many years of experience and numerous diplomas make our company trustworthy. We guarantee the accuracy and reliability of our website services. We would like to assure you that your request will not be left unanswered and your problems will be solved. 

The website only processes applications sent in writing or by e-mail.

We work from 8:00 a.m. to 4:00 p.m.