Different caulk types are suggested for sealing stucco cracks because each offers distinct benefits.

Acrylic Latex Caulk: Acrylic Latex Caulk works best to repair minor and hairline cracks in stucco finish coats. The caulk works well for application purposes while matching the stucco texture perfectly and allowing for subsequent painting.

Polyurethane Caulk: This caulk type stands out for its exceptional durability, flexibility, and top-notch water-resistant capabilities. It performs best on large cracks and where stucco connects with materials such as windows and doors.

Elastomeric Caulk: This type receives praise for its flexibility and ability to fill larger cracks and voids.

For best results, consider the following factors when choosing a caulk:

– Take into account direct exposure to the sun or weather.

– Evaluate where the crack exists on the finish coat or within joints or corners. This impacts the elasticity needed.

– Consider the size of the crack from hairline to substantial gaps. Make sure to use the appropriate caulk to seal the damaged area.