Hello Greg
I've had this done for a couple years now and its been great!. The white color does not show from the sides of the coach. The color was painted on the edge, its something they will do. I think it was a $250 up charge. There are a couple advantages to covering the dome. First it protects it from UV rays and stops the deterioration it causes. Then there is the additional structural integrity it brings. The dome can take a branch strike, even if it cracks it wont leak. Then there is my favorite, it blocks out the light, keeps out the heat and makes it easy to take a nap. I went back and had them coat my Houghton A/C covers as well. Have you ever seen those RV's missing the A/C cover? Well it usually starts from the UV rays breaking down the plastic then maybe taking a strike from a branch or just falling apart from plastic breaking down. Once UV rays get the plastic to breakdown its life expectancy is gone. The Houghton A/C's were so new to the market I figured it would be difficult getting a replacement cover so I had them coated, cost a $150 for both.
I used the FlexArmor franchise out of Sarasota Fl. Man were they top notch, 2 A&P mechanics own the place. The attention to detail was great. They remove everything off the roof. Clean the roof, clean off all the sealant, tape it off and spray. So the Houghton A/C's mount way nicer then the Dometic's. There is a mounting collar that gets bolted down and then the A/C sits on top of it. That mounting collar is sealed to the roof and is raised a couple inches. They leave the collar in place and spray the coating around and up the sides. Its sealed and nothing is getting in. Did the same with the Maxxair Vents.
Sarasota city brought all the city buses to have the roofs coated, they were these new hybrid's. the roofs were leaking so bad, so they contracted them to apply the coating problem solved no leaks. I see they are using it now on some high rise buildings. I have ran into a number of people who have it done. I saw a Country Coach with it done. That's an older Class "A" and it looked good. Owner said they always had a leak they couldn't find and after coating it no issues. PC's are not know for roof leaks generally speaking. I did it because I didn't want any roof leaks and I liked the idea I didn't have to caulk anything on the roof ever....
Very Respectfully
Lance