SUNFLEX UK bifold and sliding doors in Northern Ireland

For the best bifold and sliding doors in Northern Ireland, look no further than Rationel. A leading supplier of SUNFLEX UK’s advanced glazed doors, sliding doors and bifold doors, you can trust their expert team to offer advice and support no matter the size and scale of your project.

Our aluminium bifold doors and sliding doors can be designed to your exact configuration to suit your tastes and requirements. Beautiful design is paired with exclusive security and weather-proofing technology to ensure you can enjoy the aesthetics of your sliding doors without worrying about injury, intrusion or draughts.

Customers across Belfast and Northern Ireland will benefit from prompt and efficient delivery, the highest standard of installation as well as friendly, professional and reliable customer service from the very first point of contact. If you’d like to take your property to the next level, get in touch with Rationel today.

Contact Rationel


SUNFLEX products supplied by Rationel

  • Aluminium Bifold Doors
  • Front Doors
  • Heritage Doors
  • Internal Glass Partitions
  • Rooflights & Lanterns
  • Sliding Doors
  • Timber Clad Bifold Doors

Can't find the product you're looking for? Get in touch with SUNFLEX

Get in touch with Rationel

* The referral to a recognised SUNFLEX distributer is only by way of introduction and, whilst we do hope that you choose to use their services, you are under no obligation to do so. Our distributers are experienced in fitting SUNFLEX door systems but they are an independent third party that operates completely seperately from SUNFLEX UK and the terms and conditions of sale will be directly between you and this company. This company will provide you the guarantee and be responsible for any servicing work required. SUNFLEX UK therefore cannot be liable for any losses, costs, charges or expenses caused by any aspect of the contract.

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