I have always worked in blue collar type jobs welding, fabricating, engine building, etc. but have never done anything extensive as far as contracting outside of helping my dad remodel kitchen/bathroom as a kid and helping him with various plumbing jobs. 

The company I evaluated in orlando claimed to be able to build "ecco homes" using pre-fabricated pieces with solar panels.

Watch the 22 second video below to hear it from his own mouth.Completely fabricated lies.

I use less boxes because my installer charges by the box and my fabricator charges by the box as well.

Additionally, LEED for Homes includes a credit specifically for off-site fabrication – MR 1.5.

Mildew is tough to get out of fabric.  

It sounds to me like she is fabricating reasons to break the lease.Hopefully you will be able to resolve whatever issue is actually bothering her about the building and she will turn into a great long term tenant.

Old houses generally have close to nothing for insulation)Wall paper is generally removed with a combination of water and fabric softener and a lot of hand labor.

Don't worry about those who may try to fabricate their application to meet your criteria, rarely does this happen if the tenants know you really will verify all the information and do thorough back ground checks.For me, there are other aspects that carry greater weight than a person's credit score or credit history.  

A transformer blew near their fabrication shop, so they lost a week of work and couldn’t catch up.