NBT was founded 1999 with the mission of bringing ecological building materials and systems into the mainstream construction industry in the UK. Specialising in materials and designs for the shell, or envelope, of the building (i.e. walls roofs and floors). NBT sells products throughout the UK and Ireland both directly and through its distribution network. NBT supplies four ranges of products for the building shell and these products combine in a variety of applications as NBT Systems. The four ranges are: Insulation Products; Boards, Plasters, Renders and Mortars; Fired and Unfired Clay Blocks; and a complete range of Trade Paints in Emulsion, Gloss and Eggshell as well as Beeck Silicate Paint for external use on masonry.