There are days you should not seal pavers: brand new and uncured, damp or before rain, over efflorescence/dirt/mold, or over a failing old sealer. Why timing and prep decide the result.

White spots after sealing pavers are usually efflorescence salts or trapped moisture. How to tell if it is under or on top of the seal, the acid-free fix, and prevention.

Paver sealer peels when the film loses its bond — from dirt, trapped moisture, incompatible layers, or over-thick application. Causes, the strip-and-reseal fix, and prevention.