APPENDIX TO 109848AT REPORT ON BLOCKWORK AIR PERMEABILITY FOR
PRISTINE ELITE AIRTIGHT COATING 21.03.11
Where we have stated the permeability is too low to detect we can qualify this comment with the
following statement:
Where the air permeability is less than 0.36m3/h/m2, no exact value can be obtained due to the resolution of the
instrument. This represents very low levels of air leakage and an Air Permeability no greater than 0.36m3/h/m2.
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