How are seam sealers generally applied?

Seam sealers are generally applied using brushes or caulk guns. This method allows for precision and control when applying the sealer in joints and seams where two surfaces meet. A caulk gun, in particular, provides the ability to dispense the sealant evenly and fill gaps effectively, ensuring a strong bond and proper sealing against moisture and contaminants. Brushes can also be used to apply seam sealers in areas that require a more detailed approach or smaller application points.

The other methods mentioned would not be practical for this type of application. Airbrushes, while useful for fine detail work in painting, would not provide the appropriate consistency and control needed for seam sealing. Spraying directly from a can might lead to overspray and uneven application, which is not desirable for the precise filling of seams. Trowels are typically used for more rigid materials and surfaces, making them unsuitable for the flexible and targeted application required by seam sealers.