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Scottish Building Standards Sections 5+6 - summary of 2010 testing requirements

The 2010 Scottish Building Standards increase the design performance levels that must be achieved for all new building warrants submitted from 1st October 2010.

Section 5 (Noise)

Acoustic kit .jpg With effect from 1st October 2010, Section 5 (Noise) of the Scottish Building Standards now includes a requirement for a post-completion sound insulation testing regime (where example constructions are not being used), and tougher sound insulation performance criteria, as shown on the table below. 

Tests should be carried out in approximately one in 10 dwelling types (depending on size & make-up of the scheme). 

Transitional arrangements mean that the acoustic performance must be demonstrated with post-completion testing in new flats from 1st May 2011, and in houses and conversions from 1st October 2011. However, some local authorities are already asking for test results.

Contact NHBC on 0844 633 1000 to clarify your scheme's needs - ask for 'Acoustics'.

 

Current
New build & Conversions (dB)

2010
New build & Conversions (dB)

Increase

Airborne Sound (min DnT,w)

 

Mean

Ind

 

 

Walls

53

49

56

+3

Floors

52

48

56

+4

Impact Sound (max L'nT,w)

Floors

61

65

56

+5

Section 6 (Energy)

ALT door .jpg

With effect from 1st October 2010, Section 6 (Energy) of the Scottish Building Standards includes a requirement for post-completion airtightness testing.

Changes to Section 6 (Energy) relate to an "improvement in the specified performance to deliver a 30% reduction in carbon dioxide emissions" compared to 2007 standards. 

It is recommended that buildings be designed to 10 m3/m2.h @ 50 Pa or better though an infiltration rate of 7 m3/m2.h @ 50 Pa is used for the TER calculation.

Transitional arrangements mean that the airtightness performance must be demonstrated with  post-completion testing in new flats from 1st May 201, and in houses and conversions from 1st October 2011.  However, some local authorities are already asking for test results. 

As a baseline, testing needs to be carried out for 1 in 20 dwellings, of each dwelling type, to confirm the dwelling achieves the designed air infiltration rate and delivers a sufficient level of ventilation.