Does anyone know what kind of caulk this is?
Fishbucket Joe Senior User Feb 13, 2020 #3 I don’t know what that is, but I’d use Polyurethane concrete caulk to replace it.
J junquecol Bruce Senior User Feb 13, 2020 #4 If you remove existing caulk, most likely you will find a backer rod behind it.
G gmakra New User George Feb 14, 2020 #5 Probably SikaFlex it's a concrete caulk you can find at any Home Depot.
O Oka Casey Corporate Member Feb 14, 2020 #6 Yup Probably Sika... should be 15LM .... but more likely it is 1A. NP2 by Sonneborne Sonolastic is the real concrete caulking to use. That is what we use on the control joints on bridges, or other equal to this type.
Yup Probably Sika... should be 15LM .... but more likely it is 1A. NP2 by Sonneborne Sonolastic is the real concrete caulking to use. That is what we use on the control joints on bridges, or other equal to this type.