The answer to 'why is my paver yellowing' is that pavers can sometimes develop a yellowish discoloration over time due to a few common causes. This is often a natural weathering process as the pavers are exposed to the elements, but it can also be caused by mineral deposits or other environmental factors.
Some of the most common reasons for paver yellowing include: exposure to sunlight and UV rays, moisture buildup, and chemical reactions with the materials in the pavers or the soil. In some cases, the yellowing may be a sign of efflorescence, which is a white or yellow salt residue that can form on the surface of the pavers.