In some cases a contributing factor can be high pressure in the roof system.
Rubber roof has bubbles.
Usually bubbles are not associated with leaks.
The most common cause of bubbles is the application of rubber to the deck or insulation board too soon before the adhesive is dry enough.
A roof blister is a raised area where there is a loss of adhesion of the roof.
One problem you might come across is bubbles or blistering in your epdm roof.
Vapour from bonding adhesive bonding adhesives are used to attach epdm membranes to upstands and around the roof perimeter.
Definitely keep and eye on it and if it begins to get larger i would take it to the dealer.
This can occur for two main reasons.
If this is the problem the solution is to install pressure relief vents.
This area can fill up with air or water to form a blister which looks like a bubble on your roof.
In the most severe cases the membrane may need to be peeled back and re bonded.
In time the bubbles will decrease as the membrane is partly breathable.
Bubbles in the rubber roof.
Roof bubbling is just what it sounds like spots where the rubber has lifted off the surface of the roof and formed a bubble or blister.
The most common cause of roof bubbling is poor installation of the roof.
These bubbles of trapped air moisture can be caused by a variety of issues which are all avoidable if the roof design is correct and the membrane is correctly installed.
Most epdm and tpo roofs will have some bubbles wrinkles at least every rig i have had did and so do most of my friends rigs.
Whilst bubbles or blisters on a one piece epdm roof can be unsightly they will not cause the rubber membrane to fail.