Driveways & Paving

Moisture/efflorescence beneath sealant on new block paved driveway

Anonymous user 23/02/2024 - 3.34 PM

Hi, we recently had our driveway block paved by a contractor (in the Bromley area) and after a dry weekend it was sealed. That night it rained and by the morning the driveway was full of large white patches and marks - a cloudy mess! Not sure if it is natural efflorescence or moisture trapped beneath sealant, but either way it has ruined the look of the driveway. Have tried applying xylene, which only helped fade the marks a little, and efflorescence cleaner, which did not work, but still very unhappy. Original contractor said it is efflorescence that will fade in time, but I'm not satisfied. When the job was first completed it looked great, so I gave him a good review, but now it looks horrible. Any ideas or help appreciated.