Quote:Have a look at the Schrijver System Spam removed, it doesn't involve injecting liquid and it might provide a solution to the terrace situation.
Do not look at this system. It has a bad press and has been rebranded at least once.
Synthaprufe.....liberal coating up to about 4ft...then while still wet throw kiln dried sand (available in sealed bags from the likes of B&Q) to provide a key for replastering. Job done.