Answer this question - what do to about a problem before and after "professional" repair?
It doesn't matter what "the problem" is.
In this case "the problem" is a leaking EPDM roof. This can be a very expensive repair as it not only involves the roofing surface but the structure underneath.
My report, and photos, identified the problems. It recommended professional evaluation and estimation for repair costs.
It also said that Firestone, the producer of EPDM roofing, has an approved list of contractors trained in EPDM evaluation and repair. And not to trust a contractor that is not so approved.
Instead my clients got a copy of the receipt by a contractor who evaluated and repaired the roof for only $225.
They called me and asked me what I thought about that. I did not know what to think, so I said I would have another look at the repairs.
Here are some before and after photos. Only two. There are more!
Notice the dates on the photos. Nothing was done. These photos both represent problems with EPDM 
that cause leaks.
Puddles all by themselves are a circumstance you should never see on an EPDM roof.
Not sure anything was done to correct what is causing them.
What causes puddles? A sagging under surface.
What causes a sagging under surface? Rotting wood.
What causes the wood to rot? Leaking.
I actually had to look around to see what "repairs" had been done to this roof.
And I finally found them. There are two repairs. Can you see them?
Excellent. So that's all it took! I don't know about you, but I'm not impressed with contractors who either don't know what to do (because they aren't approved for the repair they are asked to do) or do the minimum because they are asked to do that by the seller.
My recommendation: just because the repair addendum asks that a certified professional do a repair, and provide a receipt, does not mean that the problem identified has been fixed. It isn't a bad idea to have the home inspector return to examine things for a second time. In fact, that might be your Best Practice! That sometimes does, however, throw a wrench into the machinery!
Jay Markanich Real Estate Inspections, LLC 
Based in Bristow, serving all of Northern Virginia.
Office (703) 330-6388 Cell (703) 585-7560
Yes, that is indeed sad, and clearly the real issue wasn't addressed. Is that extra caulk? Lovely.
Jay, if repairs are necessary, so is a reinspection! No doubt about it. Enjoy your day!
It's just tar caulk Debbie and not appropriate for EPDM.
That might follow for you and me Wayne, but it is not often done around here.
Jay, I always have my home inspectors come back, there are too many shady contractors not to do that.
These may not have been shady exactly, Sybil, but they did nothing about the problems!
So we don't know who is to blame, but if it's the sellers....all to save a few hundred bucks? When a problem is that severe, they're just going to wind up screwing themselves in the end and spending even more money and not selling their house. Just fix it correctly the first time!
Jay: Some folks still haven't learned that you pay for what you get and there are no bargains to be had by cutting corners. Good blog.
Suzanne - I think I know where the problem lies, but won't say it here.
Thanks S&N. And that is certainly true.
Hi Jay, well, from what you said, your clients still have an opportunity to say the repair was unsatisfactory. Still time to get it right if your clients hold the line.
I don't think they 'fixed' anything. Atleast sweep the water off.
I don't know where it goes from here Tom. But there were many things that were not taken care of, with photos to prove.
Than - I went right after a rain for a reason...
Jay just looking I would not call that a professional repair. It looks like something I would do and trust me when it comes to home repair I'm no professional.
I had emails last night wondering if this contractor is so certified, James. I'm interested in seeing what happens.
Looks like the contractor may have been a one size, fits no one not so handy person.
Unfortunately this sort of thing happens quite often as the sale is being wrapped up. there is a push to get things off the checklist but no one is looking at what is being done Jay. These things need to be re-inspected by a third party.
It is a bona fide roofing company S&D, but not EPDM aware or certified.
And in this case they were Tom! And as of last night, I am persona non grata in the seller's household! Everyone thinks I am bringing up false "problems" unecessarily.