https://www.dekut.com/Food-and-Recipes/sound-insulation-testing-2/ Leema Technologies provide air tightness/ leakage testing and certification for domestic houses and buildings. Approved by the British Institute of Non-Destructive Testing and Building Control to carry out formal air leakage and permeability testing to the required standards. Tue, 11 Jul 2017 09:28:53 UTC en