OVERVIEW View more Guthrie Douglas were engaged by Faber France to design a solution for the glass roof that would ensure the comfort of event attendees, throughout the seasons, while maintaining the views to the outside. Using the TESS™ 440 system and Mermet Satiné fabric, we integrated motorised fabric barrels into the ceiling. The fabric is kept completely flat using a torsion spring concealed in the barrel, and then disappears completely when not in use. The combined performance of the retractable systems and the high-tech fabric provide exceptional protection from heat and glare, as well as reducing energy costs.