Too much copper is toxic to plants because it prevents photosynthesis.https://homeguides.sfgate.com/copper-control-algae-97682.htmlThat said you should get the roof inspected.You may get lucky, the roof may be in great shape other than the algae on it ( note there are shingle solvents designed to wash off roofs: don’t bleach ( bleach is ineffective against mold) or power wash.)Once cleaned, install the copper as a preventative measure.Other wise I agree with many of the comments, you might have to bite the bullet on the roof, a roof is a big deal to perspective buyers.

While having a good credit score might keep more doors open for you when it comes to financing deals in real estate investing, it certainly is not enough to prevent you from investing altogether.

@Geoffrey Schnake It's always 5 o clock somewhere is getting a lot earlier in the day for me as well.It is nice to hear everyone's positive perspectives which is breath of fresh air.

One's credit profile doesn't simply disappear into thin air because there are no debts showing on their credit report.

If NJ law prevents it, then you're sort of stuck.

You cant tell the 1 yr old to stop crawling on the floor cause its too loud or prevent that family from living on a second floor.

I didn't imaginet hat the AC had been retrofitted by blowing air without ducts through wall cavities.

I'm shocked that they aired this episode. 

You have refrigeration, Air Conditioning, a smart phone, the internet, Air Jordans, two computers, take vacations, go to college, 37 flavors of ice cream, have 365 channels of TV (I didn't say they were worth watching ;-) health insurance, life insurance, fire insurance, auto insurance, home owner's insurance, SDIRA, 401(k), plastic surgery, viagra, fast food and can call the shots of just about anything you want to do or be.I grew up in a 790 sq ft house with 4 brothers, a cousin & aunt and my folks. 

You could also consider a STR near Lackland Air Force Base, which hosts Air Force Basic Training graduations every Friday.