Egress windows are expensive and if below grade you need window wells, there are precast concrete versions as well as large metal versions maybe even vinyl or PVC versions. 

Another tenant put a metal beer cap down the disposal and caused a leak. 

Stick some to the inside of an economy car's outer door sheet metal skin and it'll sound like a mercedes door 'thud' when closed.

But h said he would replace roof with a metal one. 

. $70 for a 4 foot piece of metal?

This tenant recently sold her brand new home and is now living in my 1,000 sq ft home built in 1950 and she bombards me daily with complaints about things being old and gross (literally), even asking us to replace all of the electrical outlets and build regular closet doors (ours are floor to ceiling metal doors).

*Check the functioning of the refrigerator and vacuum the coils and clean the drip pan; also wipe clean the back of the refrigerator. 

If they have enough copper, aluminum, and other resaleable metal their "melt value" may be higher than their cost--kind of like buying scrap gold LOL! 

To install them, you do drill right through the asphalt shingles, but any reputable installer also installs high quality metal flashing over every penetration to prevent leaking.

I am fairly certain that the metal poles are all set in cement under the dirt, I pulled one of out and it was braced in with cement so I am guessing that the rest are as well.