The roof wood has grown a heavenly cow, and the roof has been suspended, how can it be cured?

The house is nicely built.

The key to your problem is that the roof must not leak, as long as it does not leak, there will be no damp problem. It is best to use plastic gusset for the ceiling, which is not afraid of moisture. I also have people here to make two-layer ceilings, the first layer is a plastic gusset, the second layer is a gypsum board ceiling, although it is more troublesome, but it is still effective for moisture-proof, and there is also a role in heat insulation. >>>More