Kingspan Insulation - Part L Building Regulations 2013

Building Regulations

Kingspan Group Kingspan Insulation

Building Regulations and Standards


Building Regulations simplified

The Building Regulations/Standards sets the levels of thermal insulation required when carrying out building work, either for new build or refurbishment projects. These are expressed as a U-value which needs to be achieved; the required U-value will depend on the location of the project (England, Scotland, Wales), type of building (domestic, non-domestic) and the application (floor, wall, roof). The table below shows suggested U-Values and below that there are more detailed guides to the thermal insulation parts of the Building Regulations and Standards.

Recommended U-Values for Domestic Buildings
 
 
 
England - April 2014 Wales - 31st July 2014   Scotland - Current    
New Build Existing Buildings  New Build Existing Buildings    New Build Existing Buildings   
Best Starting Point (Fabric Only) Extension Refurbishment Best Starting Point (Fabric Only)  Extension Refurbishment  Section 6  Extension* Refurbishment 
A B
Wall 0.16 0.28 0.3  0.18  0.21  0.3  0.19  0.19  0.22  0.22
Floor 0.11 0.22 0.25  0.15  0.18  0.25  0.15  0.15  0.18  0.18
Pitched Roof - Ceiling Level 0.11 0.16 0.16  0.11  0.15  0.16  0.13  0.13  0.15  0.15
Pitched Roof - Rafter Level 0.11 0.18 0.18  0.11  0.15  0.18  0.15  0.15  0.18  0.18
Flat Roof 0.11 0.18 0.18  0.11  0.15  0.18  0.15  0.15  0.18  0.18

*Column A applies where the existing building has U-values worse than 0.70 W/m.K in the walls and worse than 0.25 W/m.K in the ceiling.
If the U-values are better than those figures the U-values in column B apply.


Recommended U-Values for Non-Domestic Buildings
 
 
 
England - April 2014 Wales - 31st July 2014   Scotland - Current   
New Build Existing Buildings  New Build Existing Buildings    New Build Existing Buildings   
Best Starting Point (Fabric Only) Extension Refurbishment Best Starting Point (Fabric Only)  Extension (domestic in character) Extension (other buildings) Refurbishment  Section 6  Extension Refurbishment 
Wall 0.22 0.28 0.3  0.26  0.21 0.26  0.3  0.19  0.19   0.22
Floor 0.18 0.22 0.25  0.22  0.18 0.22  0.25  0.15  0.15   0.18
Pitched Roof - Ceiling Level 0.19 0.16 0.16  0.18  0.15 0.15  0.16  0.13  0.13  0.15
Pitched Roof - Rafter Level 0.13 0.18 0.18  0.18  0.15 0.18  0.18  0.15  0.15   0.18
Flat Roof 0.13 0.18 0.18  0.18  0.15 0.18  0.18/0.20*  0.15  0.15   0.18
*0.20 only applies when integral insulation is used.

Click here for a printable version of these tables.

The requirements for the conservation of fuel and power, which includes thermal insulation, in buildings in England are detailed in Approved Documents (AD) L1A, L1B, L2A and L2B to the Building Regulations 2013 which come into effect on 6th April 2014.


Our Guides to the latest Regulations

England 2013 Building Regulations Guides
L1A New Build - Dwellings
L1B Existing - Dwellings
L2A New Build - Buildings other than Dwellings
L2B Existing - Buildings other than Dwellings

Wales 2014 Building Regulations Guides
L1A New Build - Dwellings
L1B Existing - Dwellings
L2A New Build - Buildings other than Dwellings
L2B Existing - Buildings other than Dwellings

Scotland Building Standards
Scottish Building Standards 2015

Useful resources:

3 things you need to know about Part L 2013
Building Regulations and SAP
What can we expect from Part L Building Regulations

Building Regulations Official Documents

England 2013 Building Regulations Official Documents:
L1A New Build - Dwellings
L2A New Buid - Buildings Other Than Dwellings
L1B Existing - Dwellings
L2B Existing - Buildings Other Than Dwellings
Amendments to the Approved Documents L1B and L2B 

Wales 2014 Building Regulations Official Documents:
L1A New Build - Dwellings
L2A New Buid - Buildings Other Than Dwellings
L1B Existing - Dwellings
L2B Existing - Buildings Other Than Dwellings


Previous Guides

2010 Building Regulations guides:
L1A New Build - Dwellings
L2A New Build - Buildings Other Than Dwellings
L1B Existing - Dwellings
L2B Existing - Buildings Other Than Dwellings