[malon]

was wondering how ep henry coventry curbstone is installed when set in mortar...it will be edging for an island bed. i've installed this material before, just not in mortar with mortared joints. is there a need for a 4" modified base? what will stop frost from heaving the install?(i'm located outside of philly) how much mortar is it typically set in? any tricks or quirks i should know about?

[Matt Kulp]

If you want to have a mortar joint that is going to withstand the heave, then you need to pour a slab to set the curbstone on it. Personally, I would pour a 4" concrete border and set the curbstone in the concrete. Then you can come back and point later. The only time that I use just mortar on curbstone is if I am just trying to hold it in place long enough for the paving and/or back fill to be installed behind and in front of it. Make sure to reinforce the concrete with some rebar.