Anonymous wrote:The very high end architect who did the family room additon of our house before we bought it didn't bother to put Tyvek between the drywall and the wood siding. It rotted. We had to replace the whole bank of the house. They sucked!!!
The thing is that architects don't build houses, builders do. So if tyvek was left off your house, it's not the architects fault unless they didn't specify a water barrier in their drawings. And, the tyvek actually goes over the exterior sheathing and undernearth the wood siding not between the drywall and siding. And, if the siding was cedar, there should have been a drainage barrier such as cedar breather installed behind the siding to allow moisture that gets through the siding to drain away. Hopefully your new contractor added that when they rebuilt the wall.