Dantaag have been installers of composite windows for nearly 30 years, working on over 900 projects throughout the UK and overseas. As of January 2020, we took the decision to increase the number of window systems we install. We now install all the the very best composite window systems being offered in the UK such as NorDan, Idealcombi, VELFAC, Rationel & Internorm windows. Sapphire Balconies Ltd patented their ‘Glide-On’ balcony system in 2013 and since 2017 we have been Sapphire Accredited Installers and have installed thousands of Sapphire balconies on projects throughout the UK.