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I am looking to repait small cracks in the concrete before i plan to repaint backyard concrete.Can you please suggest concrete repair product and application method.
Next i am going to repaint the concrete i have seen few videos on bunnings site but they have it on unpainted surface mine is already painted i am planning to give it a good wash and then repaint on that would that work. existing paint does not have any sealer or anything.
Hi @DexterOz,
I've contacted one of our concrete paint suppliers, and the old paint will need to be removed before re-coating. As the paint has degraded to the extent of the concrete coming through, it all needs to be removed with an angle grinder and diamond disk. The issue is that the concrete needs an acid etch which will turn the paint gummy. Your re-coat needs to be done before the concrete becomes exposed.
Once the paint has been removed, I'd recommend you start by cleaning up all the cracks from any debris that might be trapped in them. Once the cracks are clean, apply Timbermate 500g Concremate Expanding Cement as per the directions on the packaging.
Please let me know if you need further help or had questions.
Mitchell
You can fill the crack as it is now with no issues. Removing the old paint is regarding repainting the whole area.
The advice I have received is that all the paint needs to be removed in order to repaint. This is done by grinding the paint off, back to concrete, for the whole concrete area. The paint supplier I have spoken to believes that your paint is too worn to be coated over. It's up to you if you wish to follow this advice. Personally, given the amount of work it would be to grind all the paint off, I would clean it thoroughly and paint over it. Even if the new paint doesn't bond well, you can always remove it all later.
Mitchell
