ALEX PLUS® Acrylic Latex Caulk Plus Silicone is a professional quality caulking product formulated to last. It is an all-purpose adhesive caulk ideal for a wide variety of applications for interior and exterior use. ALEX PLUS® contains silicone, which allows for excellent adhesion and flexibility to resist expansion and contraction without cracking. It provides a waterproof seal and prevents air and moisture from passing through cracks and joints thereby improving energy efficiency. Cured caulk is mildew resistant. ALEX PLUS® is paintable with latex and oil-based paints. It is easy to use, easy to tool, low in odor, cleans up easily with soap and water and has a low VOC content. 


  • Highly flexible and durable for a waterproof seal.
  • Excellent adhesion.
  • Cured caulk is mold and mildew resistant.
  • Easy to apply and tool.
  • Paintable.
  • Easy water clean-up. 
  • Indoor/outdoor use.
  • Exceeds ASTM Specification C834.