Technical newsletters about emerging issues & our latest research

Part L 2013 – The Increased Importance of Thermal Bridging

Posted on January 16th 2014

  SUMMARY Achieving compliance with Part L1A 2013 will require detailed consideration of thermal bridging in all new dwellings. For some dwelling types, this is already common practice.  For non-traditional construction types where developers have typically used default values for thermal bridging, design teams have a choice of either making significant improvements to all other fabric values, or carrying out …

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Reducing construction waste

Posted on August 21st 2013

The construction industry is the principal source of waste in the UK, producing 35% of the country’s total waste, according to DEFRA’s most recent data (Figure 1). The opportunities for the sector to improve resource efficiency and reduce waste disposal costs are significant. Figure 1: Total UK waste generation by sector, 2004 to 2008 (tonnes) (Data from DEFRA, 2011) *’Other’ …

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Ventilating dwellings in noise exposed areas

Posted on May 6th 2013

Developers must carefully consider the technical impacts of any planning requirements which preclude the use of openable windows in residential developments.  The limited technical solutions currently available mean that any such requirements will severely constrain the ventilation strategy and have a direct impact on Part L1A CO2 compliance. Where planning requirements for developments in areas with significant noise exposure preclude …

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The Benefits of Dynamic Simulation Energy Modelling at Concept Design Stage

Posted on February 25th 2013

A recent dynamic simulation exercise for a client has highlighted the importance of early consideration of a “joined-up” building services and fabric strategy. This ensures an optimised heating solution delivers comfort and acceptable running costs. The use of our dynamic simulation energy modelling software greatly improved the accuracy of this process over standard SBEM compliance modelling. We have been working …

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The changing skyline of London – green roofs playing their part

Posted on November 13th 2012

More and more green roofs are being used in schemes, predominately driven through the planning process, especially in London. In this article we look at the benefits green roofs can bring to not only the development to which it belongs, but also the local area in which it is located. Green roofs have been around for hundreds of years with …

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November 2010 Code guidance in practice

Posted on August 28th 2012

  Our experience in using the most recent Code guidance issued in November 2010 has highlighted the following issues.   ENE 8 The latest Code guidance requires communal cycle stores to meet various aspects of Section 2 of Secured by Design (SBD) New Homes 2010. These security requirements are mostly defined within the ENE 8 section of the Code under …

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Window lintels and Part L

Posted on July 26th 2012

We have undertaken a desktop study to test the significance of lintel performance on the outcome of Part L assessment. The study was based on the 2010 version of the Building Regulations for new homes. We conclude that selecting lintels with a view to their thermal performance can be of real advantage to designers seeking to meet strict carbon targets. …

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Why we should insulate corridor walls next to dwellings

Posted on April 24th 2012

Under Building Regulations 2010, corridor walls adjacent to dwellings can be classed as: a)      A sheltered wall, if the adjacent corridor is unheated OR b)      A party wall, if the adjacent corridor is heated Sheltered walls The u-value of a wall separating a dwelling with an unheated corridor must be considered as a ‘heat loss wall’ under Criteria 2 Guidance of …

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Building Regulations Part L1b: Improvements to existing dwellings

Posted on July 11th 2011

Building Regulations Part L1b: Conservation of Fuel and Power, applies to Existing Dwellings. The regulation is  broad in reach and is intended to make notifiable any significant building modifications that are undertaken. The Approved Document for Part L1b gives guidance on the way in which compliance with the regulation may be demonstrated. The document is notoriously difficult to navigate. Part …

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Implications of the new Code guidance

Posted on December 13th 2010

The  latest  revision  to  the  Code  for  Sustainable  Homes  (CSH)  was  launched  last  month  (Nov  2010). Schemes can be assessed under the former May 2009 version up until the 9th of December but after this date  must  use  the  new  version,  unless  the  scheme  is  being  developed  under  the  2006  Building Regulations (Part L). It is early days to be …

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