That study carried out particle transport measurements for full-scale timber frame structure similar to a wooden floor. The penetration is highly dependent on pressure difference and not on holes in the surface boards of the structure. The results showed that surface contacts of mineral wool with other building elements may have an important role in penetration.
Penetration of inert particles with a size range from 0.6 to 4 µm and spores of Penicillium and Cladosporium was studied through a full scale timber structure. Pressure difference and air leakage over the structure were varied. Measurements at moderate pr
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