How to fix cracks in shed pad?

G-Dingo

I have pulled my old shed down with the plan to extend the pad(will use dowels to connect the new pad) and build a bigger shed. The old pad has decent cracks through it, I ran the grinder through the cracks with the plan to use  concrete crack filler now Im not to sure what would be the ideal product to use?

MitchellMc

Welcome to the Bunnings Workshop community @G-Dingo. It's sensational to have you join us, and many thanks for your question about filling cracks.

It really comes down to whether the cracks in the old pad are still active or whether the slab has fully settled and isn’t moving anymore. If the cracks have been there a long time and you’re confident the pad isn’t shifting, then you can go ahead and use a concrete crack filler such as Gripset Betta Concrete Crack Filler, or even a two-part epoxy filler, which will bond the sides of the crack together and give a solid repair. On the other hand, if there’s any chance of ongoing movement in the pad, those rigid fillers are likely to crack again pretty quickly. In that case, you’d be better off with a flexible polyurethane filler such as SikaFlex 11FC, which has a bit of give to it and can move with the concrete rather than breaking apart. So the best option really depends on whether you think the pad has stabilised or if it’s still moving.

Please let me know if you have any questions.

Mitchell