I have a tear in the roof between my right airhorn and the front transition strip. Looks like the PO used Dicor or something similar to patch it. After removing the patch I see that it was stapled to try to keep it together and then the Dicor/sealant applied over the staples & crack. Best I can tell it has been working to seal out water, but has now failed and I am now getting a leak(s). I need to reseal the entire roof, but I'm most concerned with this area at the moment. I can't seem to determine how much "give" I'm supposed to have when pressing down to determine if I have any weak spots at the area. I have tried to research the forum for direction and solutions. I feel confident to repair myself, I'm just not sure if I should tear out the area to see how much damage there is underneath? It's not super soft but it does feel like there is some delamination there. Any advice is welcome and appreciated!
The cap joint will leak as well.
To repair that section , remove the sealant and gel coat with a grinder , lift the glass up and peak under. Some gorilla glue can be used to re attach the glass and follow up with some clothe/ epoxy .
Address the cap by removing the strip and use if structural glue and maybe rivets to hold it all together . Sealant under the cap strip. And in the screw holes.
I would grind it out and re glass it using cold cure epoxy. With epoxy use glass cloth.
When cured grind and sand it smooth and then I would gel coat it.
I have determined that for me the easiest way to attack this problem is to make roof replacement panels on the ground with a purpose built table. I used polyester resin and glass cloth for repairing my skylight. I know that eventually I'll need to replace more of my roof and I intend to pre-manufacture 2' (or so) wide repair panels. I had good results with a portable circular saw set to 1/64" less than the thickness of the roof to cut away the damaged area, using a box cutter to cut away the remaining veneer.
U225 Roof Repair (https://www.foreforums.com/index.php?topic=42011.msg420015#msg420015)
Art