see, for example, what this guy did.What I learned after 1 year of house hackinglive there for a few years and save up all the money you can. 

Proper bookkeeping now will save you so many headaches during tax season and as you expand your portfolio.Best of luck as you grow your real estate business!

and get any missing info sent to you in writing. 

Do you just do a typical loan/mortgage with a bank and use money in your savings account to put a down payment.Just trying to figure out what is the best method to put a down payment.

Let me know if you need info.

But your info is helpful, I'll check that out! 

It is automated so saves a lot of time.

Unfortunately, she frequently turns it off to save on electricity, which exacerbates the issue.i have also sent her extra radiator heat so can just plug in , but she refuse to use because she has to pay high electric bill.She complained about the unit's insulation and requested that we install an additional baseboard heater( whats the use if she doesn't turn on the heat) .

If your roofer didn’t provide info on this, I’d ask them or check GAF’s website.

The easiest and straight forward option would be, as you said, to sell the current residence, payoff the HELOC (or most of it) and then get back to saving with your jobs and the rental cashflow.