With underlayment, people state what seems obvious -- that a thicker product will do a better job of deadening noise and perhaps of blocking moisture penetration through a concrete slab. 

If one of them dies, you can literally have a used appliance guy get you a gently used machine for less than a repair. 

I am assuming this needs to be relocated outside the unit and also I need to add moisture barrier to the foundation/floor etc.It's my understanding that a regular designer cannot help with this and I will have to engage a specialist to help with this.

That said, I focus on a very different market segment (mostly 800k to 1.5 mm on the residential side) so that dictates how I approach things.Water issues are the number one cause of litigation in my line of work so I am very focused on water/moisture management. 

Is this a normal thing with moisture trapped under the laminate padding?

Definitely tread gently/lightly and strategically for all the wise considerations here2.)

They can look for recent damage and do moisture tests.  

In addition to new vents we are also considering installing cedar planks on all three bathroom ceilings because it’s mold resistant and (hopefully) handles moisture better than paint.Does anyone have experience with this?

“If we were just suffering deflating demand,” it said, “the market would be cooling off pretty gently.

A whole property humidifier requires maintenance, is prone to repairs and increases risk of mold through higher levels of moisture.