@Michelle BrightThat "silver coating" is an aluminium pigmented asphalt which is rolled {painted} onto an modified bitumen roof.  

There are several reasons, actually:Article 16 of the National Association of Realtor's Code of Ethics and Standards of Practice prevents us from soliciting business from another realtor.

An ounce of prevention is worth a pound of cure?

You swap them out on a fairly regular basis either as preventative measure when they are nearing the end of their life, or as a restorative measure when they break.  

I want to make sure i follow protocol to prevent any trouble.

Both of those are Tenant responsibilities and can easily be cleaned and prevented. 

Are there a organized groups that seeks to prevent this?

There has to be some sort of huge obstacle preventing people from doing this that I am not seeing.Help educate a newbie Note/Lien learner by pointing out what I am missing.Thanks!

Actually getting it though is a different story.In our jurisdiction, an EM dispute does not prevent you from selling the property to someone and closing, your state may be different.What does your agent say?

Am I legally able to take a conditional nonrefundable deposit from a section 8 tenant to prevent her from renting some place else other then mine during/after her end part of section 8 paperwork processing stage (provided she will get the final approval by section 8 that is; she told me she has been a section 8 tenant for years and she’s just being transfer from one city to another; she verbally agreed that she‘ll rent my place)?