The Building Regulations & ‘Historic
The Building Regulations 2000: L1B – Conservation of Fuel & Power in existing dwellings (as amended on 6th April 2006 & 2010) sets out the requirements for compliance when replacing existing windows and doors in residential property.
The requirement in simple terms is to save energy, and the document provides details on acceptable self-certification schemes for replacement works such as CERTASS Accreditation.
Compliance is normally required when fully replacing a window or door, this needs to include the surrounding Box or Master Frame, but is not required for overhauls, upgrades or part-renewal.
In addition, properties classed as ‘Historic Buildings’ are specifically exempted and the regulations do not apply. This applies to all buildings which are:
- i) Listed in accordance with section 1 of the Planning Act 1990
- ii) In a Conservation area designated in accordance with section 69 of that Act
- iii) Where compliance would unacceptably alter the character or appearance of the property
The L1B Approved Document is available here: www.gov.uk
The exempt dwellings section is detailed on Pages 7 & 8.