Does Silicone Sealant Hold Up to the Elements?

Dec 24th 2021

Silicone sealant is a popular choice for home improvement projects due to its ability to withstand the elements. Durable, study, and versatile, silicone sealant can last for several years after application. Thankfully, its user friendly design makes it easy for an everyday DIY project. You don’t have to be a professional to apply silicone sealant to holes and cracks around your home. Overall, silicone sealant’s longevity makes it a great home improvement tool for basic repairs.


You can apply silicone sealant in temperatures as frigid as -20 degrees fahrenheit. Even so, it’s wise to apply the sealant at room temperature, or it may take longer to cure. Generally speaking, it’s best to apply silicone sealant in between temperatures of 39 and 89 degrees fahrenheit. While silicone sealant is very durable, if it's exposed to unusually cold temperature too often, it may expand and crack.


Silicone sealant has a high thermal resistance, making it capable of withstanding very high temperatures. In fact, it can handle temperatures as high as 200 degrees fahrenheit. This is because it was literally designed to handle high temperatures. It doesn’t burn easily and doesn’t release any harmful chemicals if interacting with hot materials. This makes it safe to use for household electrical appliances or around flammable materials.


Generally speaking, most silicone sealants will be able to withstand severe weather conditions as long as it’s maintained regularly. This isn’t to say that you need to repair your caulk every time a storm rolls through, but it’s something to keep in mind. Don’t worry too much about your silicone sealant if you live in cold or hot climates. If you live in an area that’s prone to storms, keep an eye out for damage.


Moisture is the only thing that could potentially affect silicone sealant, but only upon application. Never try to apply caulk when it’s wet, snowy, or foggy. Humidity or precipitation could damage or weaken the seal, but this is rare if it isn't a brand new caulk. Silicone sealant is waterproof, so unless there’s significant water damage, your caulk should be fine.


If it’s well-maintained, a fresh application of silicone sealant can last up to 20 years. While it does wear out eventually, it’s very easy to repair. Its durability, heat resistance, and water repellant nature contributes to its longevity.

If you’re interested in finding out what silicone sealant can do for your home, contact Silicone Depot today!