Interlocking expansion (popped out)
I live in Ontario, where the summers are hot and the winters are cold.
We just went through a spell of several heavy snowfalls and several times of shovelling through the mess. However, soonafter, we had lots of rainfall that melted most of the snow and now the temperature is hovering around -2 celcius (30 Farenheit).
I have noticed since these down and ups of temperature that about 4 of our interlocked bricks (all together) are stuck out about 2 inches above what they should be. It might be that something has popped these bricks up.
It's not something I need to fix now, but I want to know is this something I should try to fix in the spring when the weather is warmer and perhaps the density of the interlocks have shrunk?
I was considering using a rubber mallot, but didn't want to risk damaging anything right now.
Thanks for your help.