Preparing for Flexible Caulk (Backer Rod)

we got some pretty big cracks right here not big enough to put back a rod in but one of the reasons why I do like using tower Tech 2 is it bonds better than any caulking I've ever used spans the Gap bigger cracks of any caulking I've ever used and it tools better than any caulking I've used I really like using tower Tech too yo it's a lifetime warranty caulking and I use it on all my exterior repaints had a lot of Success With It least amount of Pops of any caulking I've ever had also used also when you start to get uh areas like this that the caulking has been pushed out it's best to cut it out and to re-cock it you don't want that bulge sitting there so we've got a big chunk of caulking right here we can cut that out starting to get borderline where you know you'd want some backer rod going in there to fill that that's a big enough Gap that we should step back a rod in there another spot where expansion and contraction is really pushed out a big bead of caulking that's better to cut it out um this one is probably small enough that it doesn't need backer rod um and this is where it's better to use a high quality caulking that bonds really well but if you don't fill that whole crack it will re-crack again especially if you use a really cheap caulking here's a piece of backer rod right here now you know if you did fill this up with Tower Tech and it would actually you'll bond to both sides it would expand really well but if it contracts it's going to push out a big bulge of caulking which is what it looked like before so it's just best to take stuff in some back a rod in there this will give your caulking some backing I just take my knife cut it off of the end stuff that in there now it's not going to take nearly as much caulking either to fill and your crack is going to have a lot more success you know when it comes to expansion and