Introduction to the company! Slide and fold.co.uk are the sister company of WeatherShield Ltd, who have been established since 1977. They have been manufacturing exclusively bi-fold and multifold door systems for the commercial market. Slide and fold.co.uk was established to cater for the trade and retail market in 2006. To view all of our products, including windows and doors Slide and Fold Ltd, have been supplying Bi Fold doors direct to the public since 2006, with great success. Choose from the beautifully designed TecTURA or Solatherm range of Aluminium Folding Sliding Doors or select either the Standard or Plus range of UPVC Folding Sliding Bi-fold Doors. Or choose from the Vista range of aluminium sliding patio doors with an ultra slim 35mm sight line.