Here is a good site. You get what you pay for IMO when it come to receptacles.
Drillspot
Sorry I only link the Bryant stuff but search around to find Hubbell and others
Is that vapor barrier on correctly?
From what I have done and can find you are suppose to roll the top up and put it over the window not fold it around the rough frame.
Am I way off base or are things different in your part of the country?
Isn't that what he is doing here basic homework?
Nothing on the internet is considered fact.
I would be remiss if I said I was an expert. But in the past homes had way more air flow between the outside to the inside. This was do to not sealing with an air barrier. In the last 15-20 years...
Well the vapor barrier should be on the warm side of the insulation so that mean unless you put the paper to the inside it will be in direct contact with the paper.
Mold is not a for sure kind of thing. The OP is looking for a cheap and easy way to get is garage set up. Friction fit is...
First I would never use paper backed insulation. Mold will grow on the paper if you ever get moisture. Friction fit is just as easy to install. Vapor barrier is a must anywhere you insulate. You can use osb instead of drywall too. That will save because you don't need to tape and mud it.
I don't think he just lets him role and drill holes by himself.
Kids and power tools are a good mix with full supervision. Better they learn the right way rather then from there friends.