Gale Hawkins wrote:
Your roof being black is a NON issue to keeping your RV dry for another 20 years of you keep all the seams sealed with Eternabond, etc.
Keep in mind 99.9% of roof areas covered with EPDM rubber is done with BLACK. White it only a thin finish to help reflect some of the sun's energy. It does not make the roof last longer. EPDM in black or any other color is very UV resistant by design.
Again black is just fine for keeping an RV dry. If you are going to used Liquid Rubber or its twin I strongly suggest you deal all of your seams and openings with Web Seal version of Eternabond so you have them addressed for the next 35 years. It is glass backed and needs to be coated anyway.
Shops around here charge around $100+ per running foot of the RV length if there is NO water damage to address.
Unfortunately, most of this is wrong. The white outer layer is a sacrificial UV coating to protect the black rubber that is NOT UV stable. Leaving the black exposed will, over a shorter time than the white, destroy the rubber. You should as quickly as possible either replace or coat the roof so no black rubber is showing.
The reality is the roof has reached its usable life. Coatings will postpone the inevitable, but sooner or later you will have to replace the roof.