How to fix gap between concrete and wall: concretemate or general construction grout?

shumm

hi Bunnings team, would really appreciate you’re advise on this.

a) I’m hoping to fix the slab edges on the side of the house myself. It spits out loose mud from underneath when we run the hose for cleaning..so need to have this sorted asap, for the existing concrete and for aesthetics. May I know what the best way to do this would be? Will concretemate be a good option? And any prep that I need to be aware of before packing it in? 

b) can I use concretemate to fill hairline cracks in our new concrete slab? The cracks  show up clearly after wet weather and I’m worried it will eventually ruin the concrete. Hoping to fix the cracks before prime and seal. 

Many thanks 

MitchellMc

I'd say you could do a reasonable job of filling those voids with Concremate @shumm. Try to clean as much debris out of the void as possible before you fill it. Aesthetics-wise, it might be worth creating some formwork down the length of the slab and pouring in a construction grout down behind it to recreate the front face of the slab. That would improve the overall look and give you a uniform finish. It would likely be best to fill those voids first, though.

For the hairline cracks, I'd look to use something similar to Gripset Betta 1L Concrete Crack Filler, as it will be easier to apply.

Please let me know if you have any questions.

Mitchell