Leaderboard

I just packed the hole. No mesh. My repair was in the crotch of a y as the exhaust splits to 2 mufflers. Just checked out of curiosity and it is still holding strong. Couldn't hurt to create a "wrap" of the edges of the hole where some material is on the inside and some on the outside and then fill in the middle. Or tuck a tiny piece of copper mesh on the inside slathered with the sealant. Attach and use a piece of dental floss or thin string to pull the patch up against the inner wall and then slather on a coat on the exterior surface. The area I worked on wasn't conducive to cleaning so I just relied on the silicone to do its best.