Limitations: Do not apply product to a damp surface or use on bricks. For exterior applications only. Always do a small test to ensure desired look and performance of the sealer. Do not use on retaining walls, vertical walls , polished stone or clay pavers. The solvents in the sealer will attack plastics, asphalt or petroleum based products. The minimum application temperature is 45 degrees F for the previous 20 hours. The maximum surface temperature during application is 90 degree F. In hot weather the product dries quickly so it is recommended that the product be applied in the cooler morning hours. Surface may darken during application depending upon porosity of the surface and amount of sealer applied.