Many contractors experience problems with the sealant, such as cracking, discoloration, poor drying, and peeling. The truth is, it's not the sealant itself that is bad; it's simply that the wrong type of sealant was chosen based on the weather temperature! Today, I will explain clearly how to use silicone sealant in different climates.
First, for the warm seasons with temperatures ranging from 15 to 35 degrees Celsius, it is the most suitable time for applying the sealant. With suitable temperature and normal humidity, common neutral sealants, anti-mold sealants, and weather-resistant sealants will cure stably, form beautifully, and bond firmly. Most indoor and outdoor projects can be carried out normally, resulting in the best effect.
For hot summers and sunny weather, do not use ordinary sealants randomly! Ordinary sealants are prone to aging, turning yellow, and shrinking and cracking under high temperatures and direct sunlight. For outdoor windows, walls, and sunrooms, you must use weather-resistant silicone sealant, which is resistant to ultraviolet rays and high temperatures. It will not change color easily under direct sunlight and has stable elasticity, able to withstand the temperature differences throughout the year. I recommend the dual-source organic silicone SY-9800 silicone weather-resistant sealant.
During the rainy and humid season, when the air is very humid, ordinary adhesives tend to absorb moisture and turn white, and become sticky after curing. For kitchens, bathrooms and other damp areas, it is recommended to use anti-mold sealant. It can prevent moisture and bacteria, and is less likely to be affected by moisture during construction during the rainy season. I recommend the dual-source organic silicone SY9600 neutral anti-mold sealant. Try to avoid rainy weather outdoors as much as possible. After construction, ensure proper ventilation and drying.
During the cold seasons with temperatures below 5 degrees Celsius, the curing process of the glue will significantly slow down, and there is a high possibility of false drying, stickiness, and poor adhesion. For low-temperature construction, it is recommended to choose low-temperature compatible sealants. It is advisable to carry out the construction during the time when the temperature is high in the middle of the day to ensure the base surface is dry and avoid freezing of the glue at low temperatures and subsequent delamination and cracking. I recommend the dual-source organic silicone SY-9700 universal sealant.
Summary: Remember: General use at normal temperature, weather-resistant for exposure to direct sunlight, mold-proof for damp environments, and avoid low temperatures in winter. Choose the right sealant based on the weather, and the sealant will not crack, turn white, or deteriorate over several years!