You might think your house only becomes watertight when the siding, brick or stone is completely installed. Actually, sidings of any kind, including masonry and stucco, are not as watertight as you might imagine. They are not the last line of defense against water.

I refer to siding, brick, stone, stucco, and other sidings as the “weatherproofing” of the house. These materials keep the bulk of the wind and water out, but even perfectly installed siding material will still let in small, but significant, amounts of moisture. There is no effective way to stop this and it does not indicate the house is poorly built. (more…)