Those paint strippers will eat right through organic vapor catridges in a respirator, and they really don't work all that well anyway without multiple, repeated applications.After the heat gun, you might want to try the Citristrip product on trouble spots.

New roof and a company is coming in to install a radon mitigation system so the basement is getting a vapor barrier installed all before I even close on the house. other than that we are looking at about a 50k rehab, ARV is at 90k. 

I don't have experience with tenants vaping but I do know that the vapor smell dissipates in seconds once it is in the air.

I too wondered it if had to do with her being new and not knowing what she's doing but that's the risk I took since she has only been a realtor for about 2 months now.

The plastic is called a Vapor Barrier. 

My inspector was in the crawlspace and noted no vapor barrier or insulation under the house. 

@Mark S.How long can this be sustained ( her being late every month ) youcant run business like this worried if you’ll get paid or not .

Unfortunately her being my sister I also know that in august/beginning of september she went on 2 vacations out of state, the state fair, a concert and the county fair...so she is NOT struggling financially she is just putting rent as her LAST priority!

You can buy great looking laminate at $1-2sqft at Lowes, plus underlayment (definitely install underlayment/vapor barrier, it helps with the water problem and also helps the floor absorb minor leveling imperfections).   

Yes, I was thinking of this too as tonight my husband and I agreed that the property we‘ve been trying to get a renovatIon loan isn’t going to work out, and after having her be our long distance realtor (and setting up appraisal inspection and contractor bid appts with the seller’s agent and their tenants) I feel she’s lost interest working with ALL investors despIte the fact that Ive been giving her referrals.