We had a PVC roofed conservatory that needed re-roofing and found a German based system called Guardian Warm Roof. K&K were one of a number of suppliers/installers in Ireland. Contacted them in September. Their rep called in late September measured up and provided estimate and approximate 6- 8 week lead in time for work with work at estimated at 7 days. Programmed work for late November/early December. Installers arrived as planned and completed job in the 7 days finishing on 4th December. On Day 1 the old roof was removed and temporary covering was put on so interior was protected during a rainy week. One additional panel of original glass needed replacing as part of the job and the panel supplied was not quite right. They did a temporary fix and someone came early in January to finish the replacement. Good and efficient job. We followed up with installation of underfloor heating (from a different firm) and now have a permanently usable room.