Air Pressure Testing
Checklist of items to be completed prior to our arrival on site.
Checklist
| 1 | A copy of the Architectural drawings in advance of visiting the site. ( Several days in advance to enable us to complete the necessary calculations ). |
| 2 | The Design Air Leakage rate or Air Permeability rate for the dwelling. This information can be found on your SAP Rating documentation as issued by the SAP Assessor. It is important that you advise us of this. If you do not advise us of this figure, then we will assume the maximum allowable figure for Part L1A which is 10m3 / (h.m2 )@50Pa If you advise us incorrectly and as a result, the dwelling fails, you will be charged for the re-test. |
| 3 | We require that 240 V mains Electricity supply is on and live and that an Electrical Socket is situated within 5 metres of our testing equipment set up at normally the front door. ( If not please advise distance to the nearest ). |
| 4 | Ensure that the dwelling building envelope is finished. All doors, windows and claddings must be installed. If any are missing due to damage then they can be temporarily sealed by yourselves. |
| 5 | Have a competent member of staff available on the test day to modify or seal any areas that we identify as requiring extra work. A good supply of mastic / decorators caulk and board material etc would be useful in case areas need to be sealed. |
| 6 | If the door chosen for the test has a larger opening than 1.1m x 2.2m high, you will need to modify the opening to accommodate our standard template, or choose another door if suitable. |
| 7 | Seal all ducts and penetrations where the main services enter the building. IE: Gas, Electric BT, Water, Cable. |
| 8 | Seal all SVP and waste pipe penetrations passing through the external walls and ceilings. Make sure that the tops, sides and ends of all pipe / svp boxings are sealed to prevent air leaking into the boxing and escaping through these penetrations. |
| 9 | Bath panels should also be fully sealed. |
| 10 | Ensure that all windows and external doors are closed fully. |
| 11 | All penetrations through floors and ceilings should be sealed. |
| 12 | Boiler flues at the building preparation point should be sealed with mastic. |
| 13 | In houses constructed from Timber Frame or where dot and dab plasterboard has been fixed to the inside face of blockwork perimeter walls, the gap between the bottom of the plasterboard and floor needs to be sealed at every floor level. Alternately, the gap between the bottom of the skirting board and floor can be sealed with mastic. This prevents air leaking behind the wallboard and passing above the ceiling board into the roof space. |
| 14 | In some dwellings, storage cupboards have been built into the roof space. The doors/hatch openings when closed should seal the room from the roof space. Fit draught excluder strips to top, bottom and both sides of the door frame. |
| 15 | If we arrive on site and are delayed due to the site not being prepared adequately, or items in this checklist not being completed prior to our arrival, we reserve the right to cancel the test. The full test fee will be payable. |
| 16 | If you have any questions about the building preparation or the actual test, please telephone or email our office ( not on the day of the test ) to discuss them. |
General Items
| 1 | Whilst we would prefer to have the building empty apart from ourselves for the duration of the test, people can stay in the building whilst the test is in progress. They may not however enter or leave during the test period once the equipment is set up and readings commenced. Furthermore all windows and external doors are to remain closed during this period. ( Approximately 30 minutes ). |
| 2 | Ideally a Parking space for a vehicle within 10 metres of the test dwelling would be appreciated on the day as equipment is heavy with several items to include in transportation. |
We are here to help you achieve a pass at the first attempt.
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Unit 5 Lemanis House, Stone Street Lympne, Nr Hythe, Kent. CT21 4JN.
Telephone 01303 260656