Why does the slab need 28 days to cure before concrete polishing?

If anyone tries to polish concrete before the 28-day curing period has elapsed, it’s possible to damage the slab when grinding or to instantly achieve a much fuller exposure than you would like. There are some contractors who only wait a week or two, but we’ve seen areas of concrete that have been ‘ripped up’ by premature grinding. In some cases, it is possible to grind a slab after 21 days instead of 28 days, and we can assess that on a case-by-case basis. However, we normally recommend the full 28 days to ensure proper curing. We are aware that some contractors are willing to grind a slab after 14 days or even sooner, but we view this as extremely risky. Being a company that guarantees the high quality of our work, at Grind and Seal, we don’t like to take any chances with your slab. After all, concrete slabs are the valuable foundation of your new home or premises, and we truly believe you will find that the 28 days is worth the wait.

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