Can the SD7 Joint-Saver replace subslab grout injection?
Yes, in many cases. Subslab grout injection stabilizes joints by supporting the slab edges from underneath. The SD7 Joint-Saver stabilizes joints by tying the slab edges together across the joint. While both methods have been used with success, only the SD7 Joint-Saver keeps working if slabs curl or the sub-base sinks.
