It all comes down to whether or not the tenant/buyer becomes disgruntled and decides to (1) challenge the transaction with a lawsuit, or (2) resist an eviction based on an executory contract defense.

, that are supposed to resist heat gain more etc. 

I understand RUBS in theory and have been asking my property management team to implement it but have been met with some resistance.

Personally I would expect them to be more water resistant than actually waterproof.

I've seen a lot of mortgage companies say things and then relent when a bit of resistance is offered.

I took the leap and invested because I was eager to invest and the returns were too good to resist.

It is a popular choice for countertops because it is durable, heat-resistant, and scratch-resistant.

Our Government is resisting helping.NYC has a huge Puerto Rican population.

I bought a property recently, and I knew very well that I was probably buying at the peak of the market, but the property was a deal, it fit my needs, it's in a recession-resistant A-class area, and it's producing great returns--and my net worth and cashflow are better with the property than without it, so I don't really care what the short term market dynamics were when I bought it. 

You also need to watch for neighborhoods that are resistant or won't allow Sec 8.