I resealed the coleman a/c on my rv last year however the leak has started again. I think the problem is that the 30year old roof has sagged under the a/c weight . I am considering making a plywood te...
Good Morning J.D. yes ,we still have it .I am going to take the a/c off completely for the winter ( trust me we don,t need it in Colorado during that time ). Then seal the top with a square of ply . I have read a post where the person used some wood between the inside framing and the roof to get rid of the depression and thus stop water pooling. Hemi RT the sag is not that bad and there is no rot.