"The problem is that the water we've always had is hanging around in a new generation of building materials that can't tolerate water as well as yesterday's building materials could. Today's building materials are also more palatable to mold because they're more refined."
"The Mold Explosion, Why Now", Joseph Lstiburek, PhD, P.Eng, Building Science Corp
Building materials and current design have made newly constructed buildings more susceptible to mold than ever. From young timber and refined wood products to air-tight building designs that reduce drying capacity, new construction today yields optimal conditions for mold growth when water is introduced.