👉 A building fluid, often referred to as a building sealant or fluid-applied sealer, is a specialized material used in construction to fill gaps, cracks, and joints in various building components. These fluids are typically composed of polymers, resins, or silicones that harden upon application, creating a durable, waterproof, and flexible barrier. They are applied using specialized tools like brushes, rollers, or spray guns, ensuring a seamless and consistent finish. Building fluids are crucial for maintaining the integrity of structures by preventing water infiltration, which can lead to mold, rot, and other forms of damage. They are commonly used in exterior applications such as siding, roofing, and window frames, as well as interior uses like sealing gaps around doors and windows. Their versatility and effectiveness make them an essential component in modern building maintenance and renovation practices.