b'We do a lot of historical restoration; with Rapid Set Mortar Mix Plus (MMP), I canmake a patch in hours that looks 90 years old. After we used MMP to repair balconies at one building in a condo complex, we got the contract for the other buildings. Those patches are in the same shape they were in when weleft years ago, so I dont doubtthe products durability. TONY PERNASCo-Owner, Bear Flag Construction Services/ Bear Flag Waterproofingctscement.com 33'