Like Robbyk I have extensive blistering on a 2 year old Elkridge DICOR roof. Blisters are mostly about 3/8", with largest about the size of a quarter. The blister is in the membrane itself, and not under it because if you scrape it, you see white rubber underneath. My roof is tan and RV has been left in central Florida the past two summers. It was very hot and humid this past summer and I wonder if this is related. DICOR has the pics but say they have not seen this before and are slow to respond. My local mobile RV guy suggests the rubber is delaminating.
The roof has not been abused. Robbyk, do you know what UV product was used? How old is your roof?
Did you contact DICOR?
Did you get your roof fixed? How? $$$
Can anyone help?
How old are your roofs with similar issue?