ALERT | BUILDING regulations changes for Part E: SOUND


by BRegs Blog

From 1 July 2015, there are changes to Building Regulations in relation to sound transmission between dwellings.

Transition Arrangements: This change applies to works, or buildings in which a material change of use takes place, where the works or the change of use commence or takes place, as the case may be on or after 1 July 2015. Technical Guidance Document E – Sound dated 1997, also ceases to have effect from that date.

The new TGD Part E is available at this link: Click HERE

Important points to note:

  • This does not just apply to new buildings. Extensions, changes of use and material alterations must comply with the new standard and be tested.
  • In the case of material alterations or changes of use to protected structures, an acoustic assessment of the existing structure should be carried out, including a sound insulation test and an expert may have to be employed.
  • Testing has to be carried out at completion by a competent tester.
  • Testing should be carried out on a proportion of dwellings on development sites as part of the construction process. Guidance on this is included. (Note: Certifiers may find that this is not adequate as they have to provide a separate Certificate of Compliance (Completion) for each dwelling).
  • Construction details for masonry and timber framed party walls and floors are included in the new TGD.
  • The design of building services, their position in the building and the building structure should be considered at an early stage in the design process, to reduce their impact on occupants of apartment buildings.
  • The layout of buildings and position of rooms should be considered carefully at an early design stage.
  • Lightweight structures need special consideration and it may be appropriate to support noisy plant on a separate, rigid structure.

A PDF of TGD Part E is available at this link:,39956,en.pdf

The new Part E regulations are available at this link: S.I.606

Other posts of Interest:

Summary of building regulations changes posts

ALERT: Ministers Kelly & Coffey Commence Review of Building Control Regulations

Dáil ALERT | Minister Coffey: Alternative 40 sq.m. Interpretation

SI.9 and PII Alert | Practice makes perfect or does it?

BCMS Alert | Last day for Christmas Completion!

Legal Alert | Commencement Notices since 1st March 2014

RIAI News Alert | Summary of 5 Senior Counsel opinions on BC(A)R S.I.9

ALERT | Pyrite & Ground Floor Construction?

Alert to TD about new regulations

RTÉ Radio: Pyrite Alert

BReg Blog ALERT: Data Protection & BCMS

RIAI PRACTICE ALERT: Pyrite in blocks

3 thoughts on “ALERT | BUILDING regulations changes for Part E: SOUND

  1. Michael O'Neill MRIAI

    A higher standard of sound insulation? Is this to deaden the noise of people screaming as they burn alive in a fire because of lack of inspections by Local Authorities, fraudulent certification by so called professional and incompetent building by criminal builders and rogue developers?

    By all means lets rush out some other hurdles to incur most costs but for heavens sake do nothing to tackle the systemic corruption and life-threatening incompetence in the building industry.

    More paper pushing by this ridiculous Minster and his farcical government.

  2. Pat

    Surprise, surprise, the new TGD Part E is about 4 times the size of the previous version (as with all new TGD revisions, they seem to dramatically increase in size from previous versions, i.e., Part F, Part L, Part M etc. and with no let up in sight) and now also requires an additional specialist that the client will be expected to pay for. It’s getting harder and harder to navigate the regulatory quagmire in this country.

  3. Paul C. Mealy FRIAI

    I have not had the opportunity to fully study/absorbe these new regs. and the content of the TGD. A few observations:-

    The 1997 Reg made a clear distinction between airborne and impact sound particular in relation to party and separating walls to dwellings. No such distinction in made in the 2014 regs. Table 1 of the 2014 TGD gives no min/max level for impact sound for walls. Does this not lead to others i.e the Courts to decide what the “reasonable resistance to sound” for impact noise might be.

    The various diagrams illustrating guidance for flanking sound resistance shows only cavity construction. Does this mean that the use of 215mm cavity block is now unacceptable (not that I am complaining) The illustrations also fail to show solid construction which appears to becoming more popular with external insulation.

    Finally, a word of advice for your favourite block laying subbies. The diagrams make reference to no double coursing block work on party walls – only single course stretcher bond is allowed. Who is going to pass on this knowledge to those on site.

    No doubt there are other little hidden and unannounced gems within the TGD.


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