Caulking slab perimeter

[Westbank]

I have a ¼” crack all around my garage concrete slab and I have ants and other small insects getting in through this crack. I was wondering what is the best concrete caulk for this ? Sika ?

 

[gregtwojeeps]

Yep, SikaFlex or Basf NP1...limestone in color

 

[Westbank]

Yep, SikaFlex or Basf NP1...limestone in color

Thanks. Based on their site, I would need the Sikaflex Concrete Fix. Is that the one you recommend ?

 

[deter]

i prefer to use the self leveling sika. It flows into the crack to help fill it up better

 

[matt_i]

I'd consider putting in some backer rod first if truly 1/4". Otherwise one can eat up a lot of caulk depending on how much the gun is injecting.

 

[gregtwojeeps]

Good points on the backer and the self leveling as Sonolastic / Basf makes it too in 12 and 20 oz caulk tubes. If the slab has sawed control joints or trowel joints, you have to be sure they will not allow the self leveling compound to ooze out on the perimeters.

 

[Westbank]

Thanks guys ! I will try to figure out how deep is the crack and will see if a backer rod is necessary.

 

[DCarr2]

I dunno, I used latex painters caulk along the edges of my floor at $1 a tube (my cost) at sherwin williams, hard to beat lol