ASTATT1 Prepare to carry out air tightness testing

ASTATT1 Prepare to carry out air tightness testing Overview This standard is for those who carry out air tightness and/or air change rate testing of buildings of any size or complexity. It covers those preparatory activities carried out prior to the conduct of the air tightness test. You are required to respond to request for air tightness testing from clients and liaise with them as to the timing and conduct of the tests and the implications of testing on the functioning of the building. You must clearly explain fees and payment procedures, the terms and conditions, activities to be undertaken, as well as any limitations or constraints in relation to the air testing of the building. You are required to investigate matters which are important to ensure that an accurate calculation of air tightness can be achieved including the building structure, fabric and its component parts as well as any significant factors that may influence the conduct of the air tightness testing including weather conditions, the nature of ventilation systems and the inter-relationship of floors, roofs and walls. You are also required to make an accurate evaluation of the building envelope and calculate the required fan flow required to undertake the air tightness testing. In some cases your investigations may reveal problems that prevent you from undertaking the testing of the building; you are expected to inform the client and explain the reasons for not being able to conduct the testing. ASTATT1 Prepare to carry out air tightness testing Final NOS December 2014 1

ASTATT1 Prepare to carry out air tightness testing Performance criteria Agree and confirm instructions to carry out air tightness testing You must be able to: P1 P2 P3 P4 P5 P6 P7 respond to requests to carry out air tightness tests from prospective clients and clarify their requirements and expectation explain to the client the terms and conditions under which you will under which you will conduct the air tightness testing including fees, payment procedures, cancellation/notice arrangements and relevant standard(s) explain to the client the limitations and constraints of the planned air tightness testing including any disruptions involved to the normal operation of the building and its occupants confirm the instruction and terms, conditions and arrangements that have been agreed including any time limits and requirements for site attendance either verbally or in writing confirm with the client or other occupiers volume and envelope area calculations, and the date and time of the air tightness testing either verbally or in writing confirm with the client or other occupiers any specific requirements that apply to the air tightness testing including health and safety risk assessment and on-site procedures identify any circumstances that prevent you from undertaking the air tightness testing and explain the reasons to the client Investigate matters relating to the conduct of the air tightness testing P9 make an evaluation of the construction and complexity of the building envelope prior to the test being carried P10 estimate and/or calculate the envelope area of the envelope/volume of the building using floor, roof and wall areas for in order to prepare an estimate for clients P11 obtain air tightness target for the building P12 identify any extensions to the existing building and whether or not they should be treated as a new building P13 take into account the recommended air tightness standards for different building types ASTATT1 Prepare to carry out air tightness testing Final NOS December 2014 2

ASTATT1 Prepare to carry out air tightness testing P14 identify areas of the building to be included within the conditioned space P15 establish whether the building must be tested for air tightness through pressurisation or depressurisation or an average of both P16 establish the location of any heating, ventilation and air conditioning equipment and all internal doors and windows that will affect the air tightness testing to ensure that suitable airflow rates can be achieved to all elements of the building and to assess temporary sealing requirements P17 conduct an initial health and safety risk assessment of the building to inform the planned air tightness testing procedure P18 establish the most appropriate number and location of variable flow test fans to achieve equal pressure throughout the building P19 establish the equipment requirements for the conduct of the air tightness testing P20 establish how access for air tightness testing equipment will be achieved P21 calculate the necessary fan flow required to undertake the air tightness testing P22 identify any air flow restrictions around selected test fan locations P23 identify location of useable electrical power supplies and their impact on planned fan locations P24 establish local restrictions in the building which will affect air tightness testing such as normal working hours and work patterns Knowledge and understanding Agree and confirm instructions to carry out air tightness testing You need to know and understand: K1 K2 K3 K4 K5 the relevant and current test Standards and regulations to be applied the definition of air permeability, air tightness, air leakage index and air change rates the causes of air leakage the effect of air leakage on building energy efficiency and performance the difference between air leakage and the controlled flow of air via ASTATT1 Prepare to carry out air tightness testing Final NOS December 2014 3

ASTATT1 Prepare to carry out air tightness testing ventilation K6 what constitutes appropriate ventilation rates for different buildings K7 what constitutes a conditioned building and the differences between naturally and mechanically ventilated buildings including mixed mode ventilation systems K7 the contribution of air permeability measurement and control to health and safety, human comfort, energy efficiency and compliance with building regulations K8 the principles and purpose of air pressure testing K9 the effects of building structure, fabric, finishes, cladding and condition on air permeability K10 the types of fan pressurisation systems and their impact on air tightness testing procedures K11 ways of categorising buildings based on function, size, ventilation systems and inter-relationship of building components K12 the impact of building categories on the selection of air tightness testing procedures K13 what constitutes a building envelope/volume and the key components of buildings to be taken into consideration for air testing purposes K14 how to calculate the envelope area/volume of the building from wall, floor and roof areas K15 the function of initial air tightness target value for the building in the air tightness testing process K16 the role of air tightness testing in establishing the Energy Performance Certificate asset value of a building K17 the recommended air testing standards for different building types K18 the principles and effects of heat transfer by air leakage K19 the limitations of heat gains and losses K20 what constitutes a representative sample of new buildings with reference to demonstrating compliance under building regulations K21 air leakage test requirements for: dwellings on construction; simple buildings other than dwellings; and complex buildings other than dwellings K22 energy performance targets for buildings K23 ways of eliciting client requirements and expectations regarding air ASTATT1 Prepare to carry out air tightness testing Final NOS December 2014 4

ASTATT1 Prepare to carry out air tightness testing tightness testing K24 normal business terms and conditions for the conduct of air tightness testing and relevant Standards K25 the limitations and constraints of the planned air tightness testing including any disruptions involved to the normal operation of the building and its occupants K26 the circumstances that prevent the undertaking the air tightness testing Investigate matters relating to the conduct of the air tightness testing K27 the effects of adverse weather conditions on the accuracy of the air tightness testing results K28 what constitutes an extension to an existing building and whether or not it should be treated as a new building for air tightness testing purposes K29 the recommended air tightness standards for different building types K30 the areas of buildings normally included within the conditioned space K31 the different methods to be adopted the building when testing for air tightness through pressurisation or depressurisation K32 the effect of different types of heating, ventilation and air conditioning equipment on the air testing procedure K33 the effect of internal doors and windows on the air tightness testing procedure K34 how to conduct an initial high level health and safety risk assessment of a building and how it will inform the conduct of the planned air tightness testing procedure K35 the most appropriate number and location of variable flow test fans to achieve appropriate flow of air and the required pressure values K36 access requirements for air tightness testing equipment K37 how to calculate the necessary fan flow required to undertake the air tightness testing K38 the impact of any air flow restrictions around selected test fan locations K39 the impact of the location of useable electrical power supplies on planned fan locations K40 the impact of local restrictions in the building on air tightness testing including normal working hours and work patterns ASTATT1 Prepare to carry out air tightness testing Final NOS December 2014 5

ASTATT1 Prepare to carry out air tightness testing Developed by Version number Date approved Indicative review date K41 how to evaluate the impact of significant factors that may influence the conduct of the air tightness testing K42 the factors that prevent the carrying out air tightness testing of the building Validity Status Originating organisation Original URN Suite Key words ASTATT1 Prepare to carry out air tightness testing Final NOS December 2014 6

ASTATT2 Prepare building for air tightness testing Overview This standard is for those who carry out air tightness and/or change rate testing of buildings of any size or complexity. It covers those activities carried out to prepare the building for the conduct of the air tightness test. You must prepare to carry out the air tightness test following the relevant test Standard(s). You must ensure that all necessary temporary seals are in place and that all mechanical ventilation and air conditioning systems are switched off. You are required to carry out a relevant risk assessment of the site and building components before setting up appropriate air testing equipment and connecting all areas of the building to be tested. You must prepare the building with reference to the relevant test Standard. You are required to identify and record any variances from the required testing conditions that will compromise the representativeness of the final calculation. You must complete and keep accurate records of all measurements and location of equipment to be included in air testing report. ASTATT2 Prepare building for air tightness testing Final NOS December 2014 1

ASTATT2 Prepare building for air tightness testing Performance criteria You must be able to: P1 carry out a relevant risk assessment of the testing process and its environment including parts of the building under test P2 comply with on-site health and safety requirements required by clients and contractors P3 ensure that all air testing equipment is correctly calibrated and fully operational prior to arriving on site P4 note and report any faults with test equipment and replace with operational equipment P5 locate fans correctly around the building to ensure an even distribution of air P6 ensure the building is prepared in accordance with relevant test standard by: P6.1 opening and securing/restraining all internal doors in the test area P6.2 connecting all areas of the building to be tested together by openings of the sufficient size to ensure equalised pressure P6.3 checking that all trickle and side vents as well as all background ventilation are set in accordance with the relevant test standard P6.4 ensuring that permanently open uncontrolled natural ventilation openings are temporarily sealed P6.5 ensuring that mechanical ventilation and air conditioning systems are turned off and temporarily sealed to prevent air leakage during testing P6.6 ensuring that all drainage traps are filled with water P6.7 ensuring that cold roof loft access traps are closed and warm roof access traps are open P6.8 ensuring that open-flued appliances and controls are temporarily sealed including any internal air inlets P6.9 ensuring that kitchen and bathroom extractors are temporarily sealed P6.10 ensuring that all passive stack ventilation points are temporarily sealed P6.11 ensuring that all external doors remain unsealed ASTATT2 Prepare building for air tightness testing - Final NOS December 2014 2

ASTATT2 Prepare building for air tightness testing P6.12 erecting robust temporary screens/seals as required to allow the test to be undertaken and record their location for inclusion in the test report P7 identify and record any elements at variance with the required testing conditions or which may compromise the representativeness of the final calculation P8 ensure that temporary sealing, that does not comply with the test standard, is removed or is recorded P9 take reading as required by the test standard using suitably calibrated equipment to: P9.1 locate internal and external reference tubes in appropriate positions and record their location P9.2 measure and record indoor/outdoor pressure differences and record results P9.3 to measure and record temperatures before and after the test procedure inside and outside the building P9.4 measure and record barometric pressure if required P9.5 to measure and record wind speed before and after the test procedure if required P9.6 record the location of all measurement devices and thermometers on site test data sheet P10 conduct final pre-test checks to ensure that the air testing specification has been fully complied with and the building is ready for air testing ASTATT2 Prepare building for air tightness testing - Final NOS December 2014 3

ASTATT2 Prepare building for air tightness testing Knowledge and understanding You need to know and understand: K1 the relevant and current test Standards and regulations to be applied K2 internal company procedures and documentation for the preparation of buildings for air testing K3 the effects of building structure, fabric, finishes, cladding and condition on air permeability K4 the types of fan pressurisation systems, their limitations and their impact on air tightness testing procedures K5 ways of categorising buildings based on function, size, ventilation systems and inter-relationship of building components K6 the impact of building categories on the selection of air tightness testing procedures K7 how to comply with on-site health and safety requirements required by clients and contractors K8 what constitutes a building envelope and the key components of buildings to be taken into consideration for air testing purposes K9 the recommended air testing Standards for different building types K10 what constitutes a representative sample of new buildings as defined in appropriate regulations K11 how to conduct a health and safety risk assessment of a building and how it will inform the conduct of the planned procedure K12 the most appropriate number and location of variable flow test fans to achieve appropriate flow of air and the required pressure values K13 the impact of any air flow restrictions around selected test fan locations K14 the impact of the location of useable electrical power supplies on planned fan locations K15 how to evaluate the impact of significant factors that may influence the conduct of the air tightness testing K16 the factors that prevent the carrying out air tightness testing of the building K17 how to ensure that all air testing equipment is correctly calibrated and fully operational ASTATT2 Prepare building for air tightness testing - Final NOS December 2014 4

ASTATT2 Prepare building for air tightness testing Developed by Version number Date approved Indicative review date K18 how to ensure that all areas of the building to be tested are connected together to ensure equalised pressure K19 how to ensure that that all building components and services are correctly temporarily switched off/closed/sealed or left open to meet air testing requirements K20 how to identify the boundaries of the test area and how to secure it K21 how to Identify and record any elements at variance with the required testing conditions or which may compromise the representativeness of the final calculation K22 how to locate and use relevant pressure, temperature and wind speed measuring devices required by the test specification K23 how to record the location of all measurement devices and thermometers on site test data sheet K24 the final pre-test checks required to ensure that the air testing specification has been fully complied with and the building is ready for air testing Validity Status Originating organisation Original URN Relevant occupations Suite Key words ASTATT2 Prepare building for air tightness testing - Final NOS December 2014 5

ASTATT3 Carry out air tightness testing for single dwellings and other small buildings Overview This standard is for those who carry out air tightness and/or change rate testing of single dwellings and small buildings up to a gross internal volume of 4000m³ inside the thermal line as defined by EN13829 2001. These buildings are considered to be simple and cannot be tested in volumetric sections less than 4000m³. It covers those activities carried out to conduct an air tightness test of the air permeability of the building/envelope. You are required to carry out a relevant risk assessment of the site and building components before setting up appropriate air testing equipment and connecting all areas of the building to be tested. You must complete and keep accurate records of all measurements and location of equipment to be included in the air test report. You must carry out the air tightness test following the relevant test Standard for simple buildings. All ventilation should be closed/shut down and sealed. You must ensure that all temporary seals remain in place during the test and that all mechanical ventilation and air conditioning systems remain switched off. You are required to note and record any variances from acceptable tolerances in key readings and record them for final reporting. You must calculate and achieve the total airflow required to achieve a pressure differentiation of 50 Pascals. To determine a pass for building regulation compliance the result should be less than the target for the air test as defined in the approved national calculation methodology and with reference to the test strategy. You must complete and keep accurate records of all measurements and location of equipment to be included in the air testing report. ASTATT Carry out air tightness testing for single dwellings and other small buildings Final NOS December 2014 1

ASTATT3 Carry out air tightness testing for single dwellings and other small buildings Performance criteria You must be able to: P1 identify health, safety and specific fire safety requirements when conducting air tightness tests P2 establish the envelope area/volume of the conditioned space to be tested P3 ensure that the calibration of all air testing equipment has not expired and that it is fully operational prior to arriving on site P4 establish the ventilation systems in use and requirements for temporary sealing P5 establish the number and location of internal openings and fans to create equalisation of air pressure P6 determine if a building can be tested as a single structure; if not the building is not simple P7 ensure that all relevant external windows and doors remain closed for the duration of the test P8 check and list temporary seals P9 check and record building details P10 check and record meteorological conditions including barometric pressure and temperatures P11 record pre-test information P12 conduct pre-test checks P13 carry out the testing process following relevant test Standard for single dwellings or other small buildings P14 ensure that all temporary seals remain in place for the duration of the test P15 gather and record test data P16 validate and assess test data against pre-test checks P17 gather and record post test information P18 confirm that hat building conditions have remained stable during the test, that temporary seals have remained in place and that external doors have remained closed P19 ensure that test data are accurately recorded P20 with reference to the test strategy compare the result of the test with the target air permeability as defined in the associated energy calculation at ASTATT3 Carry out air tightness testing for simple buildings Final NOS December 2014 2

ASTATT3 Carry out air tightness testing for single dwellings and other small buildings a test pressure of 50 Pascals to determine a pass or fail P21 remove all temporary seals that the air tester installed, if any, and return the building to its previous state P22 remove or safely dispose of all waste P23 take all equipment supplied for the test away from the site P24 arrange retests where appropriate ASTATT3 Carry out air tightness testing for simple buildings Final NOS December 2014 3

ASTATT3 Carry out air tightness testing for single dwellings and other small buildings Knowledge and understanding You need to know and understand: K1 how to identify health, safety and specific fire safety requirements when conducting air tightness tests K2 how to establish the envelope area/volume of the conditioned space to be tested K3 how to ensure that the calibration of all air testing equipment has not expired and that it is fully operational prior to arriving on site K4 how to establish the ventilation systems in use and requirements for temporary sealing K5 how to establish the number and location of internal openings and fans to create equalisation of air pressure K6 how to determine if a building can be tested as a single structure K7 the relevant and current test standards and regulations to be applied K8 the importance of ensuring that all external windows and doors remain closed and that all temporary seals remain in place for the duration of the test K9 calibration checks prior to arrival on site K10 how to use relevant instrumentation K11 how to measure and record all outside and inside temperatures K12 understand the effects of the various corrections required in the relevant test Standard K13 limiting factors to be taken into account when evaluating results K14 the required measurements and tolerances as defined in the relevant test Standard K15 ways of calculating Equivalent Leakage Areas K16 requirements for the calibration of equipment in accordance with traceable Standards, by UKAS accredited organisations against recognised test procedures K17 calibration periods for different equipment K18 different dwelling types and characteristics which differentiate them K19 how to identify all results outside accepted tolerances and their effect on test results and reporting K20 the relationship between air flow rate measurements and the ASTATT3 Carry out air tightness testing for simple buildings Final NOS December 2014 4

ASTATT3 Carry out air tightness testing for single dwellings and other small buildings required range of fan flows K21 the technical requirements of the test Standard in relation to pressure measurement K22 how to ensure stabilisation of induced pressures throughout the building envelope K23 the importance of recording the average of positive and negative values over minimum periods of 30 seconds and the average of all values over 30 second periods K24 positive, negative and average values tolerance which prevent a valid test from being undertaken and how to explain this to the client K25 how to qualify results where static pressures before or after the test are in excess of plus or minus 5 Pascals K26 how to complete all data sheets accurately with the required results to permit the production of a test report K27 how to calculate the total airflow required to achieve a pressure differentiation of 50 Pascals K28 how to establish the test result K29 best and normal values for the type of building being tested K30 procedures for the safe removal of all temporary seals and returning the building to its previous state K31 procedures for the safe removal and disposal of waste materials K32 equipment checks required to ensure that all supplied equipment has been collected from site K33 the importance of following site sign out procedures and/or making appropriate people aware that you have completed the test and are leaving the site K34 methods for identifying air leakage paths such as smoke pens K35 how to handle re-tests ASTATT3 Carry out air tightness testing for simple buildings Final NOS December 2014 5

ASTATT3 Carry out air tightness testing for single dwellings and other small buildings Developed by Version number Date approved Indicative review date Validity Status Originating organisation Original URN Relevant occupations Suite Key words ASTATT3 Carry out air tightness testing for simple buildings Final NOS December 2014 6

ASTATT4 Carry out air tightness testing for non-simple buildings Overview This standard is for those who carry out air tightness and/or air change rate testing of non-simple buildings, which are greater than a gross internal volume of 4000m³ inside the thermal line as defined by EN 13829 2001, and includes buildings that could be tested in smaller volumetric sections. Buildings which are classed as large, and complex, may also be high rise, and/or phased hand over zonal buildings, are treated separately as part of ASTATT10. You are required to develop a testing plan to ensure accurate testing can take place. You must carry out a risk assessment of the building and its components including specific fire safety requirements. You are required to identify the characteristics of the building which make it a non-simple building and develop a testing plan to ensure accurate testing can take place. You must select appropriate test fan types and sizes appropriate to the complexity and surface area of the building and locate them correctly. You must calculate and achieve the total airflow required to achieve a pressure differentiation of 50 Pascals, and compare results with the target figure in the appropriate energy calculation software for the type of building being tested. To determine a pass, the result (in m³.hr -1.m -2 @50pa) must be compared to the target for the air test as defined in the appropriate energy calculation software. You must complete and keep accurate records of all measurements and the location of equipment must be included in the air testing report. Ideally, the whole building should be air tested; should this not be possible then the reasons must be stated and the proposed regime defined that will satisfy the requirements of the relevant approved document. You must ensure that all temporarily seals remain in place during the test and that all mechanical ventilation and air conditioning systems remain switched off and sealed where appropriate. You are required to note and record any variances from acceptable tolerances in key readings, such as static pressure and wind speeds and record them for final reporting. You must also report on any acceptable deviations from accepted norms and standards in the manner described by the standard ASTATT4 Carry out air tightness testing for non-simple buildings- Final NOS December 2014 1

ASTATT4 Carry out air tightness testing for non-simple buildings Performance criteria Identify special requirements for air tightness testing of non-simple buildings You must be able to: P1 P2 P3 P4 P5 P6 determine an appropriate test strategy for testing non-simple buildings as defined in relevant test standards and regulations identify health, safety and specific fire safety requirements when conducting air tightness tests on non-simple buildings establish the ways in which a building is zoned and the implications on air tightness testing procedures including any stack effect or restrictions on free air flow. deploy the appropriate types and numbers of fans in separate components of the building to achieve required air pressure stabilisation establish the area to be tested; entire, extension or other, and calculate the envelope area in accordance with the standards requirements. identify health and safety and specific fire safety requirements when conducting air tightness tests on large buildings Carry out air tightness testing of non-simple buildings P7 calculate the envelope area/volume of the conditioned space to be tested in accordance with the test standard and approved document P8 ensure that the calibration of all air testing equipment has not expired and that it is fully operational prior to arriving on site P9 establish the ventilation systems in use and requirements for temporary sealing P10 establish the number and location of internal openings and fans to create equalisation of air pressure throughout the test area P11 ensure that all relevant external windows and doors remain closed for the duration of the test P12 check and list temporary seals P13 ensure temporary seals are not excessive P14 check and record building details P15 check and record meteorological conditions including barometric pressure and temperatures ASTATT4 Carry out air tightness testing for non-simple buildings Final NOS December 2014 2

ASTATT4 Carry out air tightness testing for non-simple buildings P16 record pre-test information P17 conduct pre-test checks P18 carry out the testing process following relevant test Standard for nonsimple buildings P19 ensure that all temporary seals remain in place and external doors and windows have remained closed for the duration of the test P20 gather and record test data P21 validate and assess test data against pre-test checks P22 gather and record post-test information P23 confirm that all building test preparation conditions have remained stable during the test, P24 ensure that test data are accurately recorded P25 with reference to the test strategy compare the result of the test with the target air permeability as defined in the associated energy calculation at a test pressure of 50 Pascals to determine a pass or fail P26 remove all temporary seals that the air tester installed, if any, and return the building to its previous state P27 remove or safely dispose of all waste P28 take all equipment supplied for the test away from the site P29 arrange retests where appropriate ASTATT4 Carry out air tightness testing for non-simple buildings Final NOS December 2014 3

ASTATT4 Carry out air tightness testing for non-simple buildings Knowledge and understanding Identify special requirements for air tightness testing of non-simple buildings You need to know and understand: K1 the relevant and current test standards and regulations to be applied K2 identify how to test the building as a whole; if not practical how the building could be split up and tested in sections that mount up to the whole K3 the health, safety and specific fire safety requirements to be complied with when compartmentalising buildings for air tightness testing K4 how to minimise air pressure loss through restrictions in the building and their potential effect on the result K5 how to calculate envelope areas for extensions and sample test areas K6 the impact of differences in area footprint/cross-sectional area of different parts/floors of buildings and how they are measured and factored into the testing procedure K7 the appropriate types and numbers of fans to achieve required air pressure stabilisation from separate locations in the building K8 how to identify a representative sample of the building envelope area to conduct a pre air tightness testing K9 methods of constructing temporary screen to isolate test zones to ensure that they act as effective air barriers during testing K10 how to ensure that the calibration of all air testing equipment has not expired and that it is fully operational prior to arriving on site K11 how to use relevant instrumentation K12 how to measure and record all outside and inside temperatures K13 understand the effects of the various corrections required in the relevant test Standard K14 limiting factors to be taken into account when evaluating results K15 the required measurements and tolerances as defined in the relevant test Standard K16 ways of calculating Equivalent Leakage Areas K17 requirements for the calibration of equipment and calibration periods in accordance with traceable Standards, by UKAS accredited organisations and against recognised test procedures K18 how to identify all results outside accepted tolerances and their effect ASTATT4 Carry out air tightness testing for non-simple buildings Final NOS December 2014 4

ASTATT4 Carry out air tightness testing for non-simple buildings on test results and reporting K19 the relationship between air flow rate measurements and the required range of fan flows K20 the technical requirements of the test Standard in relation to pressure measurement K21 how to ensure stabilisation of induced pressures throughout the building envelope K22 the importance of recording the average of positive and negative values over minimum periods of 30 seconds and the average of all values over 30 second periods K23 positive, negative and average values tolerance which prevent a valid test from being undertaken and how to explain this to the client K24 how to qualify results where static pressures before or after the test are in excess of plus or minus 5 Pascals K25 how to complete all data sheets accurately with the required results to permit the production of a test report K26 how to calculate the total airflow required to achieve a pressure differentiation of 50 Pascals with reference to the air tightness target incorporated into the energy calculation for the building K27 how to establish the test result K28 best and normal values for the type of building being tested K29 procedures for the safe removal of all temporary seals and returning the building to its previous state K30 procedures for the safe removal and disposal of waste materials K31 equipment checks required to ensure that all supplied equipment has been collected from site K32 the importance of following site sign out procedures and/or making appropriate people aware that you have completed the test and are leaving the site K33 methods for identifying air leakage paths such as smoke pens K34 how to handle re-tests ASTATT4 Carry out air tightness testing for non-simple buildings Final NOS December 2014 5

ASTATT4 Carry out air tightness testing for non-simple buildings Developed by Version number Date approved Indicative review date Validity Status Originating organisation Original URN Relevant occupations Suite Key words ASTATT4 Carry out air tightness testing for non-simple buildings Final NOS December 2014 6

ASTATT5 Prepare and issue the air tightness test report Overview This standard is for those who produce and issue air tightness reports on the air permeability of buildings of any size or complexity. It covers those activities involved in preparing and issuing the air tightness test report. You must prepare a report which identifies the building tested, the envelope area and the calculations used to arrive at values, as well as the methodology and equipment used. You must produce reports in accordance with company procedures, the relevant standards and the requirements of the registration scheme. ASTATT5 Prepare and issue the air tightness test report Final NOS December 2014 1

ASTATT5 Prepare and issue the air tightness test report Performance criteria You must be able to: P1 interpret and evaluate test data results checking for accuracy of entries and correct number P2 apply any correction to data using standard equations and correction methodologies P3 ensure the test result is expressed in accordance with the test standard requirements P4 identify any deviations from the relevant standards within the report P5 check air tightness against target value P6 ensure report correctly identifies tester, the customer, the building and its address and has a unique test reference P7 make reference to the quality procedure used and any complaints procedure in operation P8 provide details of the building in relation to: P8.1 location P8.2 date of construction P8.3 type of heating, ventilation and air conditioning and any other information specified in the relevant Standard P8.4 parts of the building envelope that were tested P8.5 building envelope area/volume P8.6 purpose of the test P9 provide detailed results for: P9.1 average zero flow pressures including positive and negative pre and post test values P9.2 the table of building pressures and fan flow rates P9.3 air leakage graph P9.4 pre and post test inside and outside temperatures P9.5 pre and post test wind speed and exposure if required P9.6 pre and post test barometric pressure P10 identify the test standards used and any deviations from them P11 provide details of all equipment used and its calibration status P12 provide descriptions of the general status of openings in the envelope and which temporary seals were in effect at the time of the testing ASTATT5 Prepare and issue the air tightness test report - Final NOS December 2014 2

ASTATT5 Prepare and issue the air tightness test report P13 identify the test methodology used P14 identify the regulatory framework applicable to the test procedure and report P15 provide details of registration scheme P16 provide additional information on the air permeability for buildings of the same type which were not tested P17 where applicable identify pass or failure of the building P18 cross reference all photographs, drawings and calculations to components of the test report P19 provide any disclaimers regarding the nature, conduct and interpretation of the test report P20 produce a draft result and issue a final report after further checking along with a Certificate as required P21 report when test was abandoned and clarify that results cannot be used for compliance purposes P22 provide recommendations for any remedial action or improvement to the building and any further testing required P23 re-issue reports in the case of identified errors clearly stating the context for re-issue P24 ensure that all data are held securely and inconformity with data protection requirements P25 keep all records of test data, calculations and all other necessary information as an audit trail P26 keep all records for the prescribed period of time ASTATT5 Prepare and issue the air tightness test report - Final NOS December 2014 3

ASTATT5 Prepare and issue the air tightness test report Knowledge and understanding You need to know and understand: K1 the relevant and current test standards and regulations to be applied K2 the reporting requirements for each regulatory framework K3 methodologies for the interpretation and evaluation of test data results Including the checking for accuracy of entries, correct number and intervals of individual measurement and the completion of all required information fields to ensure the test was valid K4 ways of correcting data using standard equations and correction methodologies K5 the correct form of expressing the final test result K6 how to select opinions and interpretations of data and processes during and after testing K7 how to check air permeability against Design Air Permeability K8 the required content fields for the final test report K9 the appropriate test methodologies and quality procedures including any complaints procedure in operation K.10 the correct format for the provision of detailed pre and post test results for: K10.1 average zero flow pressures including positive and negative test values K10.2 inside and outside temperatures K10.3 wind speed and exposure where required K10.4 barometric pressure K10.5 table of building pressures and fan flow rates K10.6 air leakage graph K10.7 air permeability results K11 how to Identify the test standards used and any deviations from them K12 the requirements for reporting on equipment used including fan types and location with serial numbers, calibration certification and calibration expiry dates K13 how to report on the general status of openings in the envelope and which temporary seals were used at the time of testing K14 the registration schemes in operation and their quality assurance role ASTATT5 Prepare and issue the air tightness test report - Final NOS December 2014 4

ASTATT5 Prepare and issue the air tightness test report K1 5 the importance of cross referencing all photographs, drawings and calculations to components of the test report K16 the nature and wording of disclaimers regarding the nature, conduct and interpretation of the test report K17 methods of reporting when test was abandoned with reasons and the need to clarify to clients that results cannot be used for compliance purposes K18 ways of securing and maintaining data for audit and other purposes K19 data protection requirements and Standards Developed by Version number Date approved Indicative review date Validity Status Originating organisation Original URN Relevant occupations Suite Key words ASTATT5 Prepare and issue the air tightness test report - Final NOS December 2014 5

ASTATT6 Calculate the area of building envelopes Overview This standard is for those involved in the calculation of the area of building envelopes in order to permit costing and work planning, the development test specifications and to make accurate calculations of air permeability. Single dwellings and other small, simple building envelopes are defined as being predominantly formed from flat surfaces acting at right-angles to each other, and have a gross internal volume equal to, or less than, 4000m³. Large, nonsimple building envelopes are defined as buildings that incorporate at least one or more elements formed by complex geometry including, but not limited to, curves, multiple angle pitch roof interfaces, tapered (on plan) pitched roof, and exceeds 4000m³ gross internal volume. The volume calculation is the volume inside the thermal line. You are required to obtain accurate dimensions of buildings and discrete building envelopes from drawings and/or through on-site measurements. You must use measurements of the air barrier for all wall, floor and ceiling areas (e.g. the warm face of insulation) taking into account building shape, layout, levels, and cold and warm roof areas. You are also required to identify any special measurement requirements of the building, as they can be technically involved shapes, conservatories and dormers in roofs. You will identify which structures and building features to exclude from the calculation You must check all measurements and apply the correct calculations. The competence of the technician must be appropriate for the calculations of the envelopes to be determined. You must keep all calculations and supporting information such as drawings, photographs sketches and site measurements and observations. ASTATT6 Calculate the area of building envelopes Final NOS December 2014 1

ASTATT6 Calculate the area of building envelopes Performance criteria You must be able to: P1 obtain accurate dimensions of buildings from drawings and any other existing data relevant to the standard(s) being tested to P2 ensure that measurements are based on the correct scale P3 take on-site measurements to confirm or supplement information already available as necessary P4 sketch plans and sections where none have been provided with sufficient dimensions to enable the building envelope to be accurately calculated P5 amend plans and sections provided where they do not correctly represent the built building P6 identify and measure all surfaces that define the air test envelope P7 identify the nature and positioning of insulated areas in order to include or exclude specific areas of the building to be measured including parapets, party walls & walls, conservatories, extensions and cold roof structures P8 ensure that reveals and fireplaces are not taken into account when calculating building area P9 apply checks of measurement such as openings, storey heights and the overall average envelope areas of different types of building envelope P10 input accurate data in correct fields in area calculation software and check accuracy of input values P11 apply estimate checks to ensure software calculated values are realistic and consistent with other available information and estimates of area P12 check final area values against previously obtained building data as a final check on accuracy P13 keep calculations and supporting information including drawings, sketches, photographs, site measurements and observations in order to show how area values were obtained P14 apply appropriate geometry to enable to calculate envelope elements P15 interpret standard conventions used in construction drawings ASTATT6 Calculate the area of building envelopes Final NOS December 2014 2

ASTATT6 Calculate the area of building envelopes P16 envelope area calculations must be undertaken to reflect testing methodology employed upon the test area ASTATT6 Calculate the area of building envelopes Final NOS December 2014 3

ASTATT6 Calculate the area of building envelopes Knowledge and understanding You need to know and understand: K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 the relevant and current test Standard and regulations to be applied mathematical and geometric theorems and standard calculation used in relation to building envelope geometry how to interpret building drawings and scales to establish accurate internal measurements for all building envelopes regardless of media how to take on-site measurements to confirm or add to measurement information already available how to identify and measure all surfaces that separate conditioned interiors from unconditioned exteriors how to identify the nature and positioning of insulated areas in order to include or exclude specific areas of the building to be measured in line with the testing methodology building components which can be excluded from area calculations including parapets, canopies, party walls / floors, reveals, fireplaces and insulated conservatories, extensions, walls and ceilings the importance of calculating areas for each level of the building separately how to apply estimate checks on results for openings, storey heights and the overall average envelope areas for different types of building envelope the data input fields used in area calculation software and the units of measurement being used how to input accurate data in correct fields in area calculation software and how to check the accuracy of input values commonly occurring input errors to area calculation software and how to avoid them how to apply estimate checks to ensure software calculated values are realistic and consistent with other available information and estimates of area what checks can be carried out to verify area values against previously obtained building data as a final accuracy check how to identify, capture and store calculations and supporting ASTATT6 Calculate the area of building envelopes Final NOS December 2014 4

ASTATT6 Calculate the area of building envelopes K16 information including drawings, sketches, photographs, site measurements and observations in order to show how area values were obtained for certification and accreditation purposes and in the case of challenges to results understand standard conventions used in construction drawings ASTATT6 Calculate the area of building envelopes Final NOS December 2014 5

ASTATT6 Calculate the area of building envelopes Developed by Version number Date approved Indicative review date Validity Status Originating organisation Original URN Relevant occupations Suite Key words ASTATT6 Calculate the area of building envelopes Final NOS December 2014 6

ASTATT7 Manage all calibrated equipment Overview This standard is for managers, compliance and quality assurance staff and sole traders who ensure the calibration of equipment used in the conduct of air tightness tests to measure the air permeability of buildings of any size or complexity. It covers those activities involved in control of calibration processes to ensure compliance with regulatory requirements and ensure the accuracy of air tightness test results. You are required to maintain inventories of all test equipment in use and ensure that it remains in calibration and is correctly labelled. You are also required to monitor the internal processes for calibration and ensure that calibrated equipment remains available to meet business requirements. ASTATT7 Manage all calibrated equipment Final NOS December 2014 1

ASTATT7 Manage all calibrated equipment Performance criteria You must be able to: P1 prepare and maintain an inventory of all equipment requiring calibration P2 identify which equipment requires calibration by UKAS accredited calibration facility with the relevant schedule P3 ensure the despatch and return of all equipment requiring external calibration within timescales to ensure the continued availability of equipment to meet business demands P4 ensure that all calibration is carried out by competent and approved staff or via external UKAS accredited calibration facility with the relevant schedule P5 maintain accurate records of calibration and a database of all calibrated equipment P6 ensure that all calibration activities are performed in accordance with the requirements of ISO/IEC 17025:2005 and are traceable to national standards P7 equipment must be calibrated after any repair P8 monitor the calibration dates for all equipment and sequence recalibration activities to ensure that all equipment remains in calibration and is available when required P9 identify and withdraw all equipment which is out of calibration P10 ensure all calibration requirements conform to external regulatory and external standards P11 ensure compliance and the continuous availability of calibrated equipment to meet business requirements ASTATT7 Manage all calibrated equipment Final NOS December 2014 2