A structural silicone sealant is a type of sealant used for making structural joints. It is a one-part, neutral-curing silicone sealant that is applied as a continuous, flexible joint sealant. It is designed to provide a strong, waterproof bond between structural materials like aluminum, steel, concrete, masonry, and other structural materials. Structural silicone sealants are highly resistant to UV light and temperature fluctuations, making them ideal for outdoor applications. They are also resistant to weathering, and they form a flexible, waterproof seal that can last for the life of the structure.