Part L 2006 – U Values, Scotland & Scottish Building Standards.

The guidance gives three alternative approaches to the design of the insulation envelope of dwellings. These are:

• Elemental method
• Heat loss method
• Carbon Emissions calculation method

Domestic

To use the Elemental method, individual exposed building elements and other elements forming the insulation envelope of a dwelling or a building consisting of dwellings should have a U value which do not exceed the value given in the table below.

There are two levels of U value; Column A and column B. Column selection depends on the type of heating system to be installed in a dwelling and whether or not it has a central heating boiler with a SEDBUK of at least the percentages given in the table below.

Maximum U values for building elements using the Elemental method:

Domestic - with boiler SEDBUK

Minimum boiler SEDBUK which allows U values in Column A of the above table to be used:

Domestic - more demanding, other heating systems

Non-Domestic

To use the Elemental method, individual exposed building elements and other elements forming the insulation envelope of a dwelling or a building consisting of dwellings should have a U value which do not exceed the value given in the table below.

Maximum U values for building elements using the Elemental Method:

• Introduction
• Regulations
  • Quick Guide to Regulations
  • Part L 2010
  • Part L 2006 – U Values, England & Wales
  • Part L 2006 – U Values - Scotland, Scottish Building Standards
  • Part L 2006 – U Values, Republic of Ireland
  • Regulatory reform (fire safety) order
  • Approved document B
  • Euroclasses
  • LPC Design guide
• Solution Finder
• Energy Design Centre
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