Liquid Roof blistering

[Hawaiipepi]

Has anyone had a problem with their Liquid Roof blistering before the warranty is up? I used 6 gallons of Liquid Roof on my motor home 4 years ago and now am finding all sorts of large and small blisters on the roof. I followed manufacturer directions to the letter and am disappointed with the outcome. Any help with this matter would be greatly appreciated.

[crawford]

I know when I put it on it bubbled and a week or so they were all gone wait and ee.

[gbopp]

I have no experience with Liquid Roof.
A few months ago I coated my roof with Heng's Rubber Roof Coating. So far it has withstood the heat, rain, sun and now weather in the teens.
But, it has not been four years.

Is it the product that is blistering or the actual rubber/EPDM that is lifting?

What did you use to clean the roof before applying the Liquid Roof?