It seems to set quite hard, hopefully it will last! My previous cheaper grout failed pretty quickly and turned into sand, hence the reason I went for this product which was twice the price of my original. Its easy to mix and use but you dont have long before it starts to set, obviously the warmer the weather the quicker it sets. Realistically 30-40 minutes of working time. As my patio is Indian sandstone it is difficult to grout quickly, I have taken to splitting the tubs into two and only mixing half of the sand and resin at a time.

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