I was so excited to have a new walkway put in a couple of years ago and regret using Nicolock due to severe efflorescence. Many of my friends used Cambridge and have no issues... I have had contractors come to my house to see if they can salvage my walkway and unfortunately a great deal said that is the reason why they don't use this company. I would like to know if you can send someone over to take a look and help us resolve this issue, the contractor that installed our walkway tried a detergent type of product with no success.
Stating that this is a natural occurrence is one thing, but when the same does not occur with countless of our friends who went with a different paver company makes me believe it is the paver and not so much the environment.