Scottish Building Standards

1. Scottish Building Standards Building Standards Division - 2010 Changes -

2. Today - aims • Provide awareness of the ‘2010 changes’ • Highlight the main issues • Allow feedback from stakeholders

3. Today - format • 2009 changes – January/May • Main theme – ‘2010 changes’ • From 1 October 2010 • Future developments

4. January 2009 changes • Energy performance certificates (EPCs) for existing buildings • Energy Performance of Buildings (Scotland) Regulations 2008 • Schedules 1 and 3 – ‘hardstanding’ areas • Discount on warrant fee for intention to use a certifier of construction

5. May 2009 changes • Crown immunity removed • New schedule 3 types 2A-2C introduced • Specific Crown guidance produced • Updated ‘radon affected areas’ maps • Identified additional areas

6. 2010 Changes • Building (Scotland) Amendment Regulations 2010 • Technical Handbooks • Published early April 2010 • BSD website/TSO hardcopy • In force 1 October 2010

7. 2010 Changes - legislation • Schedule 3 ‘work not requiring a warrant’ • Standards - 2.11; 2.12; 2.13; 2.15 • Standards - 3.14; 3.15 • Standards - 4.13 • Standards - 5.1; 5.2 • Standards - 6.1; 6.6; 6.10 • Schedule 6 ‘conversions’

8. 2010 Changes - guidance • Updated guidance in handbooks • Testing – noise/air-tightness • Certification references introduced

9. 2010 Changes – to follow • Further guidance documents including • Alternative fire safety strategies • Conservatories guidance • Accredited construction details • Procedure regulations being reviewed for • 42 day rule • Extending warrant validity

10. Scottish Building Standards Section 0 : General Building Standards Division

11. Section 0 • Reflects changes to building regulations • Schedule 3; Standards; Schedule 6 • Defined terms (Appendix A) • ‘Traditional building’ - new • Updated to reference Eurocodes

12. Any questions?

13. Section 5: Noise Building Standards Division

14. Today • Background • New defined term - Traditional Building • Revised Standard 5.1 • Design Performance Levels and Example Constructions • Post-completion Testing • New Standard 5.2 and Generic Internal Constructions

15. Background • First major review in over 20 years • Increase in noise complaints • Lifestyle changes • Change in construction practice

16. Revised Standard 5.1 ‘Every building, which is divided into more than one area of different occupation, must be designed and constructed in such a way to limit the transmission of source noise from normal domestic type activities, between such areas, to a level that will not threaten the health of, or cause inconvenience to the building occupants’ Applies to attached domestic and non-domestic buildings in different occupation e.g. dwellings or residential buildings and now includes roofs

17. Traditional Building • Traditional building means a building or part of a building of a type constructed before or around 1919: • a) using construction techniques that were commonly in use before 1919; and • b) with permeable components, in such a way that promotes the dissipation of moisture from the building fabric

18. New Build and Conversions Performance Levels

19. Conversion of Traditional Buildings Performance Levels

20. Example Constructions Developed from field test evidence Separating Walls - Dense block solid or Cavity walls - Timber or Metal frame twin stud wall Separating Floors - In-situ concrete or Precast concrete slab - Timber floor with solid joists or I-joists

21. Timber Frame Walls Comparison

22. Dense Solid Walls Comparison

23. Cavity Walls Comparison

24. Timber Floors Comparison with solid joist

25. Precast Slab Floors Comparison with isolated screed and BRC

26. Example Construction

27. Post-completion Testing

28. Post-completion Testing

29. Post-completion Testing Phased introduction of testing: • 1 May 2011 – flats / maisonettes and residential buildings • 1 October 2011 – houses and conversions • Testing carried out by persons with relevant recognised expertise in acoustics for sound insulation testing

30. Doors and Services • Entrance doors in domestic only - provision of a perimeter seal to doors in separating walls • Services in common areas – plant, lifts, ventilation systems, drainage pipes • Design of building services - their position in the building in relation to rooms used for sleeping

31. Standard 5.2 ‘Every building, must be designed and constructed in such a way to limit the transmission of source noise from normal domestic type activities, through a wall or floor, between a room and internal space where noise is likely to occur, to a level that will not cause inconvenience to the building occupants’ Excludes hospitals, places of lawful detention, walls between en-suite bathrooms and the room it serves

32. Guidance to 5.2 Internal insulation to walls and intermediate floors - apartments in dwellings; and - rooms in residential buildings used for sleeping Level 43 dB Rw Generic Internal Constructions Internal doors in non-domestic buildings only - seal and door density of 25kg/m2

33. Summary of Key Changes • Standard 5.1 - now applicable to non-domestic • Increase in Design Performance Levels – New Build and Conversions, Conversions of Traditional Buildings • Example and Generic Internal Constructions • Post-completion Testing • Doors and Services • New Standard 5.2 – internal sound insulation to rooms used for sleeping

34. Any Questions?

35. Section 6 : Energy Building Standards Division 2010 Building Standards

36. Section 6 : Energy 2010 Topics: 2010 - Background and Headlines Delivering Low Carbon Buildings - key changes to Handbooks Information supporting revisions - methodologies, additional guidance Summary

37. Section 6 - Background • New Section 6 - May ’07 • The Sullivan Report - Dec ‘07 • Recommendation of staged improvements to energy standards • Ministerial Announcement - Feb ‘09 • Consultation - June ‘09 • Climate Change (Scotland) Act - Aug ‘09

38. Section 6 - Background 3 0 %

39. Summary of Key Changes • Methods retained, content of section and actions needed remain familiar • Review focused on target setting for new buildings, revised SAP & SBEM • Improvements to energy efficiency • Efficient services, effectively controlled, role of LCE • Improving existing buildings

40. … for New Buildings? • 30% reduction in emissions • Aggregate 30% for dwellings, flat 30% for non-domestic • Improvements in performance of fabric and services • Role of Low Carbon Equipment • Post-completion testing

41. …Alter, Extend and Convert? • Retain elemental approach • Improvements in performance of fabric and services • Flexibility for older buildings • NEW - improving performance of existing buildings – extensions to dwellings; improving services in non-domestic buildings

42. CO2 Targets - 6.1 Domestic • Amendments to fuel package table • Improvement sought will vary with dwelling type and fuel used • Improved fabric and infiltration • Additional parameters - thermal mass, thermal bypass • Low carbon element

43. CO2 Targets - 6.1 Non-domestic • 30% flat improvement • 2002 Notional building specification retained but ‘tweaked’ • Moderation of Cnotional for cooling load • Carbon emission factors & choice of heating fuel – parity with 2007 • Improvement factor - 30%

44. Shell - 6.1 Non-domestic • Calculating emissions performance under shell warrant • Avert problems arising under fit-out warrant • Facility provided within SBEM • Assess project early as may influence warrant procedure adopted

45. Insulation - 6.2 Fabric • Limiting energy demand – ‘fabric first’ • Backstops improved by 10 to 15% • Reducing linear thermal bridging – new calculation • ‘Thermal bypass’ in cavity party walls • Alternative when extending

46. Infiltration - 6.2 Fabric • Extending post-completion testing • Sample testing of all buildings • Guidance on testing and on testers - develop further? • Phased introduction of testing from April 2011 • New guidance on ventilation in Section 3 under Standard 3.14

47. Older Buildings - 6.2 Fabric • Improvement when converting - heated buildings • Guidance on traditional buildings • Alternative guidance – • review of Historic Scotland guide to conversions

48. Building Services - Overview • Standards 6.3 to 6.6 • Issues developed and addressed on UK basis - referring to 2010 CLG Building Services Compliance Guides • Review and updating of minimum efficiencies and controls • Supporting improvement and delivery of the 30% target

49. Building Services - Key Changes • Domestic - guidance on performance of heat pumps and solar thermal systems; lighting efficiency; ventilation and cooling guidance expanded • Non-domestic - minimum lighting efficiency and controls; flags for improvement of existing buildings

50. Low Carbon Equipment • Recognising expanded role from 2010 • Using where suitable and effective • Relation to other legislation, such as Scottish Planning Policy • Low Carbon Equipment guides - publication in progress