- About Us
- Case Studies
- Contact Us
Payment is invoiced on the day of the test. Full payment to be made prior to release of the test certificate and report.
Agree the plots to be tested with the Building Control Inspector. They will apply the guidance given in Part L as to what constitutes the various dwelling types on a given development. They will thus agree the sample sizes for testing for each house type, dependent on whether or not Accredited Constructions Details have been adopted.
We will require the Design Air Leakage Rate for the building. If you do not advise of a figure we will assume the maximum allowable figure for Part L1 of 10 m3/hour/m2.
We need to be sent copies of the floor plans and sectional drawings to scale indicating room heights (ideally by email) of the plots to be tested, so as to be able to check volume and envelope calculations. A site plan is also useful to enable us to give guidance on orientation and the testing regime that Building Control will probably require.
Ensure that the completed building envelope is finished. All doors, windows, and cladding must be installed, or if items such as glazing are missing due to a broken pane, they should be sealed up to prevent air leakage. Care must be taken not to create 'deviations' from the air testing methodology. If you are in doubt please email or call to discuss any possible deviations otherwise these can attract a failure from the outset.
Upon arrival to site, our Engineers will need full access and control of the plots to be tested. It is preferable that other trades vacate the plots for the short duration of the test. We require 2No. 240v Electric sockets within 25 metres of EACH of our testing equipment set up. If the door chosen for the test has a large opening greater than 1.100m x 2.100m high you will need to modify the opening to suit our standard template. (Please call us for advice should this be required.)
Please have a competent member of your staff available on the test day to modify and/or seal any further 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. Again care must be taken not to create 'deviations' from the testing methodology.
Testing cannot take place in high winds or if significant temperature differences persist from inside to outside the building, particularly for high buildings. Thus the building should not be heated, particularly in winter months.
Ensure that the completed building envelope is finished. All doors, windows, and cladding must be installed, or if items such as glazing are missing they should be sealed up to prevent air leakage. Please note that temporarily sealing items with tape should be limited to those items detailed in item 1.
We take the pressure – so you pass! Don’t leave it to late – plan for the air test now!