Home | Surface Types | Problem Solving | Products | Prices & Ordering How Soon After Grouting Can I Seal? If a solvent based sealer is to be used, the grout needs to be completely dry. Usually 7 days in dry weather is sufficient. A water based sealer is usually ok at the 3 day point of dry weather. Aldon "Same Day Sealer" can be use the same day as grouted or years later. ![]() Grout is considered "cured" in 30 days. This number comes from concrete hardness recommendations of 28 days to achieve 90% of ultimate strength. This cure time does not relate to sealing. |