The Part L 2021 consultation process for England started in late 2019 with proposals released for new dwellings. A subsequent consultation on proposals for existing dwellings, including conservatories added to existing dwellings, ends on 13th April 2021.

The Part L timetable for existing dwellings, including conservatories, is anticipated in accordance with the following timeline:
 Date  Action
February to April 2021  Consultation on energy efficiency standards for work carried out in existing dwellings 
December 2021  Publication of new Part L, Part F and overheating regulations
June 2022  Part L, Part F and overheating regulations come into force

In the current version of Approved Document L1B, a conservatory with a floor area less than 30m2 is exempt from the energy efficiency requirements. This is provided there is an appropriate thermal separation between the conservatory and dwelling and the heating system of the dwelling is not extended into the conservatory. Where these conditions cannot be met, then the glazed elements should meet the requirements for replacement windows and doors (referred to as controlled fittings). 

Pilkington provides a range of products that for conservatories that can provide solar control and thermal insulation.

If you have any questions on Part L 2021 and what the implications might be for glass, please complete our online contact form, selecting 'Architect' or 'Trade' as the Enquiry Type and 'Part L 2021' as the Nature of Your Enquiry.