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Hey all,
In a bit pf a pickle here. I amn crazy paving out porch and driveway. Decided to use adhesive to have a better stronger bond given the heavy traffic with out cars bring parked on top but now struggling with grout choice.
I initially thought that the good old mortal grout would be good enough with 3 part sand one part cement but not I am not so sure if that's the right choice.
Two questions I'd like some help with are:
1. On the driveway itself, what would be a better pick: Bigger pieces for bluestone as crazy paved or smaller pieces? WHat would be a strong better choice?
2. WHat grout type would work better on a sloped driveway? Photos attached
Welcome to the Bunnings Workshop community @jaydenjayjay. It's brilliant to have you join us, and many thanks for your question about crazy paving.
For the area you’ve already completed, something like Dunlop Wide Joint Grout would be a suitable choice. It’s specifically designed for the larger gaps that crazy paving naturally has, and will give you the strength and flexibility needed outdoors. A standard sand-and-cement mix can work in garden paths and lighter-use areas, but it tends to crack and break down over time with traffic and weather. A purpose-made wide joint grout is definitely the better long-term option.
Here's a helpful guide: How to lay crazy paving.
As for the driveway itself, I’d be cautious. Crazy paving isn’t something you typically see on driveways, and the reason is that the irregular stone shapes and joints just don’t cope well with the very high, concentrated loads from car tyres. Even when laid on a solid adhesive bed, any small voids or uneven spots can cause pavers to shift or crack once vehicles are regularly driving over them. Generally, you’d want a minimum 50mm thick solid stone paver for driveway use. Anything thinner, like the 20–25mm bluestone commonly used for crazy paving, is very likely to fail quite quickly under vehicle weight.
Because of that, I’d suggest keeping the crazy paving to your porch and pedestrian areas, where it will look fantastic and hold up really well. For the driveway portion, a more reliable option would be to paint the concrete in a colour that complements your paving. That way, you still get a cohesive look without risking cracked and crumbling stone under your car.
Please let me know if you have any questions.
Mitchell
