How to fill gap between Colorbond fence and concrete?

Question

Hello

I want fill gap in between bottom of the fence edge and Concrete surfaces.

please see attached photos for more details.

gap is around 1-1.5 cm wide

Can please someone share ideas how can I fill the gap and what could be the material?

Is gap filler is good to fill gap or something else?

Regards

pranav18780 · Answer

hi Jacob

Thank you very much for your help

I really appreciate it

Kind regards

JacobZ · Answer

Hi @pranav18780,

Welcome to the Bunnings Workshop community, it is fantastic to have you with us.

I'd suggest you start by pushing some Moroday 15mm x 5m White Gap Filler Rod into the gap so that it friction fits between the fence rail and the concrete. You can double it up if needs be. This will simply act as a backing for a silicone sealant, so it needs to be wedged in there quite tight.

Once the filler rod is in place, you can go over it with Sika 600ml Concrete Grey Sikaflex 11FC Purform which is a flexible silicone sealant that can be smoothed over to give a nice clean finish.

Check out How to fill a joint in a concrete slab which shows the application of similar products and How To Silicone a Gap for a general guide on how to install sealants.

Let me know if you have any further questions.

Jacob