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I'd like to know a bit more Matt.
Lay the crushed rock (minus an inch or so), hang a string level to the top of the desired top of base course elevation, then lay the base course using mortar spread on the bottom as a leveller?
I can see this being a great technique, but Josh's question about not having a flexible wall mirrored my own thinking. In areas with frost heave is this a workable option? My wife and I laid about 100' of base coursing last weekend and I can see how this would be very quick.
Also, the error factor..... Despite best planning, plans change and mistakes are made re final elevations, and base courses have to be built up or down, or change direction. How nasty is this mortared base course to rip out if it binds to the stones beside them?
Is there any risk of the base course settling further into the mortar as it cures?
I'd be interested in seeing some pics, if at all possible.
Very interesting discussion.
Raj
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