22   Installation of insulating material to the internal walls of a building.   ,A person registered by Ascertiva Group Limited, Benchmark Certification Limited, CERTASS Limited, NAPIT Registration Limited or Stroma Certification Limited in respect of that type of work.,
 23   Installation of insulating material to the external walls of a building, not including insulation of demountable-clad buildings.   ,A person registered by Ascertiva Group Limited, Benchmark Certification Limited, CERTASS Limited, NAPIT Registration Limited or Stroma Certification Limited in respect of that type of work.,
 24   Installation of insulation material to both external and internal walls of a building (“hybrid insulation”), not including insulation of demountable-clad buildings.   ,A person registered by Ascertiva Group Limited, Benchmark Certification Limited or NAPIT Registration Limited in respect of that type of work.,


19 April 2013,Regulations 1-10, 11(a) (in so far as it inserts paragraphs (3B), (3C) and (3D) into regulation 20) and (b), 12, 14, 16-23, 24(1), 24(2)(c)-(p), 25-29, 31-36 and the Schedule,All purposes,
19 April 2013,Regulation 13,In respect of buildings occupied by public authorities,
19 April 2013,Regulations 15 (for the purpose of new regulation 25A) and 30,In respect of new buildings occupied by public authorities,
20 April 2013,Regulation 24(2)(a)-(b),All purposes,
9 July 2013,Regulation 13,In respect of all other buildings,
9 July 2013,Regulations 15 (for the purpose of new regulation 25A) and 30,In respect of all other new buildings,
1 October 2013,Regulation 11(a) (so far as not otherwise commenced),All purposes,
1 January 2019,Regulation 15 (for the purpose of new regulation 25B),In respect of new buildings owned and occupied by public authorities,
31 December 2020,Regulation 15 (for the purpose of new regulation 25B),In respect of all other new buildings,