How to mitigate efflorescence on concrete outdoor armchairs?

Efflorescence, the white powdery residue that forms on concrete surfaces, is a common issue for outdoor armchairs. It occurs when water-soluble salts migrate to the surface and crystallize. To mitigate efflorescence, start by ensuring proper sealing of the concrete with a high-quality penetrating sealer. Regularly clean the armchairs with a mild acid solution, such as vinegar or a commercial efflorescence remover, to dissolve the salts. Avoid using harsh chemicals that can damage the concrete. Additionally, minimize water exposure by covering the armchairs during rain or using waterproof covers. For long-term prevention, choose low-alkali concrete mixes and ensure proper drainage around the furniture to reduce moisture absorption. With consistent care, your concrete outdoor armchairs can remain efflorescence-free and aesthetically pleasing.