crack between flagstone and tile

Mrwo1

New member
Jun 2, 2018
2
Frisco, TX
First time posting all my other questions have been answered by looking through the posts thanks very much. But this problem I couldn't find a direct answer for maybe i was using the wrong terminology. This is a crack between the flagstone and the tile it doesn't go all the way around so hopefully I can stop it before it does. None of the flagstone or tiles seem to be loose so is there some caulk I can use to fill the crack and what kind and any tips to make it easier? Pretty good at repairing stuff or i'm to stupid to realize I shouldn't be doing some things.Thanks for any help.1080961561418139593.png
 

pooldv

Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
Aug 10, 2012
25,401
FL panhandle
Welcome to TFP!

I don't know why PBs in Texas mortar that joint. Use a polyurethane caulk in the joint.