Do not apply when temperatures are low (<5°C) et l’humidité ambiante élevée (>70%), when it is raining or when there is a risk of frost. application must be carried out at temperatures between 5°C and 30°C. Where substrates of different natures meet, and in areas of tension, reinforce the mortar with fiberglass mesh or metal mesh treated with anti-alkali. Apply by brush or machine. Wait 1 to 3 hours before troweling.