Was her Dad the one actually paying the rent for her? 

That was her idea I swear.”

The question: What are the best ways to water proof the house especially against major damage from water heater, fridge, dish washer, washing machine, plumbing leaks?

The house had a washer/dryer when we bought it, our other rental didn't so they had to provide their own.

I own A 4 plex.. 2bed/ 2 bath washer and dryer no hoa about 7 mins west of Summerlin paid 370k bac kin feb 2019 ( that was considered high compared to the rest of the areas I was looking in ) Put about 15k into it. it appraised for 430k this month collect about $3250/ month in rents. there is still opportunity and good things going on in this market, just might be harder to find. inventory for mfh now is very tight and expensive.

I just bought 2 family in Bayonne NJ and want to buy one coin operated washer & dryer for tenants.

There is no washer/ dryer and the fridge doesn't have water to it.

As well as a little laundry room in the basement that will have coin operated washer & dryers for the tenants to use. 

The screws have rubber washers to seal to the metal and keep water out.

One of my buildings, a 30 unit, has a three washers and three dryers.