PART F1 Paul McAteer Lisburn Building Control

2. PART F1 Paul McAteer Lisburn Building Control

3. The background to new Part F Format of Technical Booklet F1 New dwellings Existing dwellings Extensions Renovations Change of Use Controlled Services Conservatories and Highly glazed extensions Presentation Content

4. “The successful implementation of the Building Regulations is essential in order to deliver the improvements in building energy efficiency,which are at the heart of the UK’s carbon emission targets and energy policy objectives” Background to the new Part F

5. Climate change, Global Warming, Reduction of Green House Gases, and Security of Energy Supply Drivers behind the amendments to the Building Regulation Part F

6. 1979 – First World Climate Conference 1988 - Resolution 43/53, ‘Protection of global climate for present and future generation of mankind’ 1997 December –The Kyoto Protocol set out basic rules outlining binding commitments To achieve a global GHG reduction of 5.2% below 1990 levels with individual targets for each participating country 2004 September 30th – Russia ratified the Kyoto Protocol. Global scale

7. 2005 February 16th – The Kyoto Protocol came into effect binding Parties to legal commitments to reduce green house gas emissions. 1995 EU White Paper 2000 EU Green Paper Security of EU Fuel Supply Dec 2002 Directive on Energy Performance of Buildings Nov 30th 2006 Building(Amendment) Regulations (NI) 2006 came into force European Scale

8. 2003 February – UK published its White Paper ‘Energy White Paper’ containing objectives to: Reduce carbon dioxide emissions by 20% below 1990 levels by 2010; Cut carbon dioxide emissions by between 15 – 25 million tonnes by 2020; and Reduce carbon dioxide emissions by 60% below 1990 levels by 2050. UK Scale

9. 26% Multi Family Houses 45% Non-residential Single Family Houses 29% Percentage Grouping of EU building Stock

10. CO emissions from the EU building 2 stock as a Percentage 23% Residental Buildings Non-residental Buildings 77% % of CO2 emissions from EU building stock

11. Percentage grouping of energy demand in EU building stock

12. Elemental Method and Target U value Method are no longer acceptable to show compliance for new build! Whole Building Approach is the new method used to satisfy Part F The Whole Building Approach is based on the National Calculation Methodology as set out in the Directive 2002/91/EC on The Energy Performance of Buildings (EPBD) Building Regulation Part F – Common Items

13. Building Regulation Part F – Common Items 4 Step Progression towards Whole Building Approach

14. Building Work now refers to any change to a buildings’ energy status Conservatory >30sqm, in Part F , has to be thermally separated from the dwelling. “DER” Carbon dioxide emissions rate (as built) Fixed building service Any part of or controls associated with fixed internal of external lighting or fixed heating/hot water service,air conditioning or mechanical ventilation New Terms & Definitions

15. Dwelling A house flat or maisonette which is self contained to serve one family Renovation provision of a new layer or replacement of an existing layer of a thermal element included under regularisation certificate SAP Energy rating 2005 edition to calculate the target & actual CO2 emissions from a dwelling “TER” Target Carbon Dioxide Emission rate Thermal Element wall roof or floor which separates a thermally conditioned space from the external environment New Terms & Definitions

16. Building Regulation A8A & A8B Where a thermal element is RENOVATED or REPLACED Part F shall apply in relation to it. (e.g. re-plastering an external wall or re-slating a roof) Any change in a BUILDING’S ENERGY STATUS, = works to be carried out to Part F, as it relates to the calculation of TER. Part A Interpretation & General

17. Building Regulation A10 Giving of notices & deposit of plans & Schedule 2 The requirement to submit a SAP calculation with the Building Control application has been omitted Does require a DER (design) & TER to be submitted with the Building Control application Part A Interpretation & General

18. Building Regulation A11 Notice of Commencement & Completion of work stages Still requires the builder to give Building Control notice in writing of the SAP energy rating for the completed dwelling within 5 days of completion. The SAP rating is now known as the Energy Rating ( 0 – 100) On completion, the builder is required to give Building Control notice in writing of the DER (as built) and TER Part A Interpretation & General

19. TER is the minimum acceptable standard for a typical (notional) dwelling: Heating; Hot water; Ventilation; Building fabric; Fixed internal lighting, etc DER  TER TER and DER must be calculated using the same software Two DER calculations are required 1st DER (design) at Building Control application stage 2nd (as built) at Dwelling Completion stage The DER (as built) must incorporate: Any changes from the design DER Measured air permeability Fan performances, Ductwork leakage, as commissioned DER & TER Resume

20. Heated TBF2 is required to assess the heated common areas ie, circulation route between flats Not Heated If the dwelling common areas are not heated, thenTBF1 & SAP 2005 are to be used Common Areas

21. An average TER may be used & compared against the average DER An individual energy rating is to be calculated for each dwelling Developments of 2 dwellings or less can avoid air testing if Same builder has built similar building in NI within past 12 months which has already been tested Value of 15m3/(hm2) @50Pa used to calculate the DER Multiple Dwellings

22. Technical Booklet F1

23. Section 1 – Common items Section 2 – New Dwellings General Target carbon dioxide Emissions Rate (TER) Calculating the notional CO2 emissions and the TER Criterion 1 – Achieving the TER Criterion 2 – Minimum acceptable standards Criterion 3 – Limiting the effects of solar gains Criterion 4 – Quality of design, construction and commissioning Criterion 5 – Operating and maintenance instructions Technical Booklet F1 Format & Content

24. Section 3 – Existing Dwellings General Extension to dwellings Standards Based Approach Calculated Trade-off Approach Equivalent Carbon Target Approach Material change of use Standards Based Approach Equivalent Carbon Target Approach Controlled services Operating and maintenance instructions Technical Booklet F1 Format & Content

25. TBF1 Appendix A – H Extensive use of second tier documents Reference to many third tier documents Additional Guidance

26. Technical Booklet F1 New Dwellings

27. 40% reduction in CO2 emissions - compared to Technical Booklet F 1998 Single method of compliance - Whole building approach for CO2 emissions target. Extensive design freedom within the target More control of solar overheating More control of construction quality Accredited construction details Improved treatment of thermal bridging Sample pressure testing Provision of information To Building Control To the owner or occupier Key Features for New Dwellings

28. Design Stage Criterion 1 – Achieving the TER Criterion 2 – Minimum acceptable standards Criterion 3 – Limiting the effects of solar gains Construction Stage Criterion 4 – Quality of design, construction and commissioning Criterion 5 – Operating and maintenance instructions Demonstrating Compliance for Domestic New Build

29. Criterion 1 – Achieving the TER Building Regulation Part F – New Dwellings

30. DER less than or equal to TER For mains gas, renewable energy and solid multi-fuels TER = ((CH x Ff) + CL) x (1 – If) For all other fuels TER = ((1.14 x CH x Ff) + CL) x (1 – If) Where CH = heating and hot water emissions (SAP) Ff = fuel factor CL= internal lighting emissions If = improvement factor (set at 0.2 i.e. 20%) Achieving the TER

31. Achieving the TER Fuel Factors

32. Achieving the TER • Design DER calculation • Part of ‘Full Plans or Building Notice’ submission • based on drawings and specifications • including design air permeability • by SAP (2005) assessment • As-built DER calculation • Dwelling Carbon Dioxide Emissions Rate • Submitted upon completion • based on dwelling as constructed • tested air permeability • by SAP (2005) assessment

33. Minimum Acceptable Standards Criterion 2 Limits to Design Flexibility

34. Minimum Acceptable Standards Design limits • Fabric • thermal transmittance (U values) • apply to dwelling and any unheated common parts • thermal bridging • air permeability • Services • heating appliance efficiencies • heating and hot water controls • insulation of pipes, ducts and vessels • Ventilation and cooling • lighting

35. Minimum Acceptable Standards Design limits

36. 0.35 (0.70) Building Regulation Part F – New dwellings Design Limits max U values W/m2K Average (individual) 0.25 (0.35) Loft 0.25 (0.35) 2.20 (3.30) including glazed doors 0.35 (0.70) 0.25 (0.70) 0.25 (0.70) 0.35 (0.70) 0.25 (0.70) Unheated space

37. Minimum Acceptable Standards Design limits for Air Permeability • Air permeability maximum of 10 m3/(h.m2) @ 50 Pa • Developments of 2 dwellings or less can avoid the air test if: • Same builder and similar building built in Northern Ireland within past 12 months and already tested, or • Use of a value of 15 m3/(h.m2) @ 50 Pa when calculating the DER, in which case compensating measures will be necessary to achieve the TER

38. Heating and Hot Water Systems appliances require an increased level of efficiency Mains Gas or LPG boiler = 86% Oil boiler = 82% up to 1st April 2007. After 1st April 2007 = 86% Refer to in the Domestic Heating Compliance Guide Heating and Hot Water Controls Full zone control to Primary Heating System Interlock + cylinder stat + independent timer to Domestic Hot Water Insulationof pipes, ducts and hot water cylinder in accordance to Domestic Heating Compliance Guide Minimum Acceptable Standards

39. Fixed Internal Energy Efficient Lighting Must be fitted in the most frequented areas in the dwelling One per 25m2 or One per four light fittings External Fixed Lighting Permanently fixed to surface of dwelling Maximum output of 150W Automatically switch off When adequate daylight When not needed at night Minimum Acceptable Standards

40. Criterion 3 Limiting the effects of Solar Gain

41. To reduce the need for cooling by reducing the risk of solar gains resulting in high internal temperatures SAP 2005 Appendix P refers to various measures Effective air change rate Regional external summer mean temperatures Solar shading Blinds or curtain type Opening overhangs Width / depth ratio of openings Orientation of openings Thermal Mass Parameter of structure SAP 2005 software will produce a check. ‘High’ does not comply Limiting the effects of Solar Gains

42. Criterion 4 “As Built Performance” Quality of Design, Construction and Commissioning

43. Fabric performance in terms of: Thermal Bridging Air tightness Dwelling must be constructed to: Accredited Construction Details or BRE IP 1/06 Builder must demonstrate that an appropriate system of site inspection is in place. Where Accredited Construction Details approach is adopted: A report shall be provided and a copy forwarded to Building Control Quality of Design,Construction & Commissioning

44. Air permeability testing Test to be carried out by suitably qualified person If development built to accredited details: Pressure test for ONE of each dwelling type Dwelling selected by Building Control Quality of Design,Construction & Commissioning

45. Example of an Accredited Construction Detail Building Regulation Part F – New dwellings

46. For developments NOT built to Accredited Construction Details Pressure test each Dwelling type as set out in Table 2.4. To be selected by Building Control in consultation with builder. Half of the tests to be in first 25% of dwelling type Quality of Design,Construction & Commissioning

47. Failure to meet dwellings design Air permeability: -remedial measures to be carried out to achieve compliance plus one additional dwelling of the same type must be tested. Remedial measures are less onerous up to 31st October 2007. These measures are described in TBF1 75% improvement; or within 15% of the design Air Permeability; or Revise the TER (current software may not permit the TER to be revised) Quality of Design, Construction & Commissioning

48. Heating and Hot Water Systems Designed, installed and commissioned. Fixed building services Commissioned in accordance with Domestic Heating Compliance Guide A Notice confirming commissioning must be provided & copy given to; District Council, and Building owner The Notice must be signed by a suitably qualified person. Quality of Design,Construction & Commissioning

49. Criterion 5 Operating & Maintenance Instructions

50. Suitable operation and maintenance instructions should be provided for the building and its services To enable: Efficient use of the energy systems An energy notice, setting out the rating should be provided to Building Control Energy Rating Notice to be fixed within the dwelling (i.e. adjacent to the electrical distribution board) Operating & Maintenance Instructions