GUIDELINE

Air Permeability Pressure Testing

Part D Materials and Workmanship

Part F Ventilation

Acceptable Construction Details

Acceptable Construction Details Introduction Thermal Bridging and Airtightness

Insulation in Cavity

• Diagram H ACD - 30 Ope split Lintels Ste... • Diagram H ACD - 12 Concrete Intermediate... • Diagram H ACD - 39 Concrete Forward cill... • Diagram H ACD - 38 Concrete backward cil... • Diagram H ACD - 19 Eaves Unventilated At... • Diagram H ACD - 40 Eaves Wall head close... • Diagram H ACD - 29 Flat roof parapet - I... • Diagram H ACD - 9 Insulation below groun... • Diagram H ACD - 33 Prestressed Concrete ... • Diagram H ACD - 22 Eaves Insulation betw... • Diagram H ACD - 15 Timber separating flo... • Diagram H ACD - 17 Masonry Partition Wal... • Diagram H ACD - 18 Stud partition wall -... • Diagram H ACD - 7 Insulation above groun... • Diagram H ACD - 21 Eaves Insulation betw... • Diagram H ACD - 14 Timber Intermediate f... • Diagram H ACD - 27 Gable Insulation betw... • Diagram H ACD - 26 Gable Insulation betw... • Diagram H ACD - 11 Timber suspended grou... • Diagram H ACD - 23 Eaves Insulation betw... • Diagram H ACD - 32 Ope Perforated Steel ... • Diagram H ACD - 20 Eaves Ventilated Atti... • Diagram H ACD - 34 Ope Jamb with closer ... • Diagram H ACD - 29 Flat roof Eaves - Ins... • Diagram H ACD - 8 Insulation above grou... • Diagram H ACD - 13 Concrete Intermediate... • Diagram H ACD - 28 Gable Insulation betw... • Diagram H ACD - 35 Ope Jamb with proprie... • Diagram H ACD - 36 Corner Inverted Corne... • Diagram H ACD - 16 Masonry solid and cav... • Diagram H ACD - 25 Eaves Insulation betw... • Diagram H ACD - 10 Insulation below grou... • Diagram H ACD - 37 Galvanised Top steel ...

Irish Water Requirements for Dwellings

Typical Inspection Reports

No 2. Inspection Foundations Radon Sump Barrier and Blinding No 26 Inspection of Windows on Rainwater System No 11. Inspection of Block work, Brickwork and feature stone band No 2. Inspection Foundations Radon Sump Barrier and Blinding No 12. Inspection of Block work, gable and party walls. No 28. Inspection of timber stairs installation No 3. Inspection Radon Barrier Blinding and Insulation No 22 Inspection Steel Beams and Intumescent paint No 4. Inspection of Radon Barrier and DPC No 25 Inspection of Windows on Front Elevations, DPM and Control Joint No 5. Inspection Radon Barrier Rising Walls Block and Brickwork No 17. Inspection of Stud wall construction No 8. Inspection of Blockwork and elements No 14 Inspection of Structural Beams No 23 Inspection of windows and doors being installed No 21 Inspection of Electrical first fix No 19. Inspection of Roof Construction and breathable membrane No 27 Inspection of Windows on Velux Rooflights No 10. Inspection of Joisting , bridging, Block work, Brickwork and Lintel supports No 16. Inspection of Stud wall construction. No 7. Inspection of Rising walls, Damp proof Course and Blockwork. No 18. Inspection of Roof Construction. No 7. Inspection of Chasing Block work, Brickwork and feature stone band No 6. Inspection Rising Walls Block and Brickwork No 8. Inspection of Radon Barrier and Damp proof Course. No 30 Inspection of timber stairs handrail installation No 15. Inspection of Stud wall and floor joist construction No 29. Inspection of timber stairs and handrail during construction stages No 3. Inspection Radon Barrier Blinding and Insulation No 31. Inspection of Timber stairs handrail. No 32. Inspection of Roof Access Hatch No 24 Inspection of Windows on Front and Rear Elevations No 20. Inspection of chasing in block party walls for electrical first fix No 13. Inspection Brickwork and Firestopping No 9. Inspection of Brick and Block work from 1st to 2nd floor

Air Permeability Pressure Testing

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Air Permeability Pressure Testing, also known as Airtightness Testing or Air Leakage Testing, is undertaken to measure the air leakage of a dwelling. All testing should be conducted by qualified personnel and the test should be certified by a third-party organization. Clause 1.5.4.3 of TGD L Dwellings 2011 requires outlines that at least one type of every dwelling is required to have a test undertaken. In large developments, one dwelling of the first four types of units should be tested.

The total number of tests required is dependent on the number of units and the number of failed tests carried out prior. Where a number of apartment blocks are constructed on the same site, each block should betreated as a separate development irrespective of the number of blocks on site. In the case of small developments with 3 dwellings or fewer, specific pressure testing of dwellings is not be necessary if, in the previous 12-month period, the builder could provide the test results from the same type of dwelling constructed elsewhere and has met the necessary requirements to pass the Air Pressure Test.

However, if the assumed air change rate in the calculation of the Energy Performance Coefficient (EPC) and Carbon Performance Coefficient (CPC) using the DEAP methodology is less than the reasonable upper limit for air permeability of 7 m^3^/(hr.m^2^), a pressure test to verify this assumed value should be carried out. Single unit developments are included in the same rules as small developments.

Air permeability Pressure Testing is carried out by attaching and sealing a variable speed blower fan to the front door of the dwelling. The ventilation in the dwelling must be positioned in the closed location but must not be sealed over its installed shut position. The fan will pressurize the building by either extracting or inserting air into the dwelling. The airflow through the fan is measured at a range of pressures and the data analyzed by a software program that calculates the air flow rate in m^3^/(h.m^2^) of building envelope area at 50 Pa. The average quantity of air being supplied to or drawn from the building to maintain pressure levels will be approximately equal to the air quantity escaping from the building through unintentional air paths and therefore reflects the air leakage rate.

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