Approved Document Part L2B - Conservation of fuel and power in
extg buildings other than dwellings
Approved Document L2B 2010 
In these days of fuel conservation, protection of the ozone
layer and prevention of global warming, it is worth reflecting on
the fact that half of the power consumed in this country is through
the heating of buildings. This requirement ensures that adequate
thermal insulation standards are achieved and efficient controls of
energy use are provided in existing buildings other than
dwellings.
Archived Copies
Approved
Document L1A - 2006 edition
Valid: 6th April 2006 -
30th September 2010
The requirement in this edition was:
L1A - Conservation of fuel and power in new dwellings
Approved
Document L1B - 2006 edition
Valid: 6th April 2006 -
30th September 2010
The requirement in this edition was:
L1B - Conservation of fuel and power in existing dwellings
Approved
Document L2A - 2006 edition
Valid: 6th April 2006 -
30th September 2010
The requirement in this edition was:
L2A - Conservation of fuel and power in new buildings other
than dwellings
Approved
Document L2B - 2006 edition
Valid: 6th April 2006 -
30th September 2010
The requirement in this edition was:
L2B - Conservation of fuel and power in existing buildings
other than dwellings
Approved
Document L1 - 2002 edition
Valid: 1st April 2002 -
5th April 2006
The requirement in this edition was:
L1 - Conservation of fuel and power
Approved
Document L - 1995 edition
Valid: 1st July 1995 - 31st
March 2002
The requirement in this edition was:
L1 - Conservation of fuel and power
Approved
Document L - 1990 edition
Valid: 1st April 1990 -
30th June 1995
The requirement in this edition was:
L1 - Conservation of fuel and power
Approved
Document L - 1985 edition
Valid: 11th November 1985 -
31st March 1990
The requirement in this edition was:
L2 & 3 - Resistance to the passage of heat
L4 - Heating system controls
L5 - Insulation of heating services
