ICS is CE Certified to EN1856-1. Additionally, kitemarked to BS4543 Parts 2 & 3 in diameters 80, 100, 130, 150, 180 and 200mm for gas, oil, and solid fuel applications and is manufactured under the stringent requirements of BS EN ISO 9001:2000 Quality management scheme. ICS also has a 4 Hour fire-rating issued by a NAMAS approved test house in accordance with BS476 Part 20. The liner has corrosion certification from Gastec, MPA and TÜV. ICS is also listed by HETAS as a chimney suitable for solid fuel.