Hello All, I am preparing to re-coat my RV roof with EPDM Rubber Roof Coating System. While on the roof today laying down new lap sealant i found a bad part in the roof that looks to be deteriorating. I am wondering what is the best way to repair without having to replace the whole roof. I do feel some rotting but only about 8" around the open area. please see pictures. i just bought this rv used a couple weeks ago and trying to get it back into shape. Thank you in advance!!