Some might also suggest auto body filler - it gets exposed outdoors to the elements and remains hard. 

@Lake Lutes - Matt Blackburn is a great human and incredibly hard working agent!

Thanks for being an awesome group of humans and I look forward to hear from you and potentially teaming up in the future!

Such beautiful golden advice your a beautiful human!!

If you need an extra body to help with renovation, I have tools and live in the area.

I have about 15 years involvment with low-moderate income housing in my area, board of directors of our Habitat For Humanity affiliate and started non-profit housing organizations for different needs.

Human nature has not changed in the past 20, 25 years, in Missouri, like many states, we didn't have LLCs in the mid 90s, before that investors held properties individually in their names and simply got insurance.

If you've been tracking the PA governing body lately, it seems like there are signs of traction to get things up and running.

Tile works in kitchens and bathrooms.Kitchen cabinets, we usually try to salvage cabinets and countertops, but if we cant, then we usually try to look at surplus stores and especially if you have a habitat for humanity restore, or consignment shop, we try to get solid wood cabinets from there for as cheap as possible.Builder grade everything usually, depending on the class of your rental.

Your business model is feeding off human trash.In some cases the slumlords have created the situation by never investing in their properties.