Hung Walls ?

goducks10 wrote:
So if there's Luan backing on a hung wall system, what's to keep the Luan from separating from the fiberglass should there be a leak? The fiberglass exterior is glued to the Luan, so the only adhesion is where the Luan meets the stud. I don't see it as delam proof. Still trying to figure out why hung walls are superior.

IMO they are not. If anything to me they are not as good. Fiberglass insulation will settle over time especially bouncing down the road. Lam walls also are much stronger for the weight. I am in industrial and commercial construction and we use Lam panels a lot on our projects (at customers request) and they are very strong and last very well compared to other processes. In the RV industry the biggest problem I see with their methods is that they use a backer (Luan)that is not resistant to water intrusion. The panels don't necessarily de-lam. The Luan gets wet and separates which causes the blister look. This can and will also happen with a hung wall using Luan as a backer. The problem with hung walls is that the Fiberglass insulation will also wick the water that gets in and make other problems.;)