NHBC Technical Extra
We produce Technical Extra to provide you with detailed updates to NHBC Standards, Building Regulations compliance and current best practice guidance. As well as the latest technical information, Technical Extra will, where relevant, tell you what actions you need to take and by when. You can access the latest and past issues below.
View latest and past editions
Issue 26 - November 2020
Includes: External masonry walls; flat roofs, terraces and balconies; drives, paths and landscaping; and more.
Technical Extra Issue 23 - January 2018
Includes: NHBC Standards 2018 - What’s New, Guidance and good practice for CQRs, Drainage under suspended floors, Spandrel panels, NHBC Foundation and Fibres in structural floor toppings.
Technical Extra Issue 22 - April 2017
Includes: NHBC Standards 2017 (including a new chapter on movement of rendered walls), Part R - electronic communications, Dry-fix verge systems, Overheating in new homes, Balconies and avoiding cladding issues.
Technical Extra Issue 21 - October 2016
Includes: NHBC Standards 2017 (including a new chapter on render), pitched roofs, external walls and NHBC OnSite technical assessments.
Technical Extra Issue 20 - April 2016
Includes: external render in NHBC Standards, wall lateral restraint straps, British Standards for installation of gas in apartments and in-situ concrete toppings/suspended floors.
Technical Extra Issue 19 - November 2015
Includes: NHBC Standards 2016; Chapter 5.4 FAQs; auto fire suppression systems (Wales); new requirements for consumer units; fire safety issues.
Technical Extra Issue 18 - July 2015
Includes: NHBC Standards 2016; Housing Standards Review; combustible cladding for multi-storey builds.
Technical Extra Issue 17 - February 2015
Includes: Guarding openable windows with low cills; fire protection for proprietary dummy chimneys; weep holes in masonry walls.
Technical Extra Issue 16 - November 2014
Includes: Chapter 5.4 'Waterproofing of basements and other below ground structures' | Guidance and good practice - an industry perspective.
Technical Extra Issue 15 - October 2014
Includes: The importance of correctly installing cavity trays and DPCs | Regulation 38 of the Building Regulations | Code of practice relating to slating and tiling for pitched roofs and vertical cladding.
Technical Extra Issue 14 - July 2014
Includes: Our annual claims review | Key issues around designing, manufacturing and installing windows | Good practice topics | Summary of NHBC Foundation reports.
Technical Extra Issue 13 - March 2014
Includes: All you need to know about the updated Part L, the transitional provisions, key changes and practical guidance.
Technical Extra Issue 12 - October 2013
Includes: The NHBC Standards 2014 edition, introducing 3.2 'mechanical ventilation with heat recovery' and MVHR - getting it right, from the start.
Technical Extra Issue 11 - September 2013
Includes: Updates to Approved Documents A, C and L, guidance on Part M, commissioning gas installations and the impact of relatively simple defects.
Technical Extra Issue 10 - June 2013
Includes: Basements, Foundation Depth Calculator app, Approved Document Regulation 7, Construction Products Regulations, Juliette balconies and British Woodwork Federation Stair Scheme.
Technical Extra Issue 9 - March 2013
Includes: Pitched roofs, protecting steel from corrosion and new MVHR standards.
Technical Extra Issue 8 - November 2012
Includes: A detailed summary of the key changes in NHBC Standards 2013.
Technical Extra Issue 7 - July 2012
Includes: Articles on aircrete blocks, FWMA and multipoint door locks.
Technical Extra Issue 6 - February 2012
Includes: An update on low or zero technologies (NHBC Standards Chapter 3.1) and two articles relating to façades.
Technical Extra Issue 5 - November 2011
Includes: The revised NHBC Standards Chapter 7.2 on 'Pitched Roofs'. The revised Chapter came into force for all new homes with foundations concreted on or after 1 January 2012.
Technical Extra Issue 4 - October 2011
Includes: Updates on pitched roofs, The Flood and Water Management Act, guttering fixings and hardcore selection.
Technical Extra Issue 3 - September 2011
Includes: The challenges for the industry in complying with Part L of the Building Regulations in England and Wales.
Technical Extra Issue 2 - April 2011
Technical Extra Issue 1 - February 2011
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