Haunching Stepped Patio Slabs

10 Jan 2017
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United Kingdom
I laid about 150 riven patio slabs last Spring.

Our house is about 2ft off the ground as it was built just after a very big flood in the area, so I had to build a few steps up to the back door. To reduce the number of steps required, I built the section of patio around the back door higher, and progressively reduced the height of the patio twice more as it headed towards the lawn. As a result, there are two 'steps' between the different sections of the patio (around 2" high).

I've tripped twice, and I'm worried my little one will do the same but with worse consequences now he's nearly walking.

Is haunching the two steps with a 1:3 sand/cement mix a good solution? I ask as I'm unsure as to the longevity of concrete laid onto the top of utility slabs. I'm also unsure how to get a clean and crisp line. I've attached a crude MS Paint image to reference the area I'm talking about.


  • slab.png
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I don't know if doing that will make it any less likely for people to trip on it. If anything it's easier to see a step than a ramp.
Due to its small height, the step tends to blend in quite well. A strip of sloped concrete would - I hope - be more visible and eliminate the chances of a foot striking the side of a slab.
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I did think that, but still prefer the idea of haunching. How would you cap the slab?
I was thinking one of those L shaped step edges you see on stairs in commercial buildings, or a similar thing. Perhaps even something as simple as grinding a set of grooves into the surface of the slab (fill them with a different coloured resin?)

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