Sliding doors

Bi Folding doors

DTU Trade windows can supply and install Bi folding doors using the Smart System Visofold series, which are folding and sliding doors that can open up very large apertures in homes or businesses to give easy access to the outside.


The beauty of Bi folding doors is in their ability to maximize light within a property, and to create uninterrupted views of the outside. This is achieved using an easily operated system which can open up an entire wall, yet present a contemporary glazed look when closed.


Secure and robust
The whole system employs high security glazing, multi-point locking on the main sashes and shoot bolts for maximum security. Our Bi folding door range offer ultra slim profiles which include a polyamide thermal break and they all fully comply with the latest Building regulations.

Patio doors

If you are looking for a brand-new patio door to give easy access to your garden in those warm summer months, why not use DTU Trade Windows to supply and install it for you. You will be surprised and amazed at how many different styles and options we can supply.


Materials and security
Patio doors are available in UPVC or aluminium and you can choose from a variety of colours. All our patio doors are designed to be secure and robust offering multi-point locking mechanisms, making outside entry difficult when the door has been locked. Our patio doors are designed to be maintenance free and aesthetically pleasing to the eye, and will provide homeowners many years of worry-free service.


All our UPVC double glazed sliding Patio doors are made to last, being manufactured from special, high performance materials they will retain their durability and looks for many years. At DTU Trade Windows we are prepared to back this up with a 10-year Warranty, and are accredited members of the consumer protection organisation DGCOS (Double Glazing & Conservatory Ombudsman Scheme)